Database

An object representing a single ArangoDB database. All arangojs collections, cursors, analyzers and so on are linked to a Database object.

Hierarchy

Database

Index

Constructors

constructor

Accessors

Methods

Constructors

constructor

new Database(config?: Config): Database
new Database(url: string | string[], name?: string): Database

Creates a new Database instance with its own connection pool.

See also Database.database.
example
```
const db = new Database({
  url: "http://localhost:8529",
  databaseName: "my_database",
  auth: { username: "admin", password: "hunter2" },
});
```
Parameters
- Optional config: Config
  
  An object with configuration options.
Returns Database
Creates a new Database instance with its own connection pool.

See also Database.database.
example
```
const db = new Database("http://localhost:8529", "my_database");
db.useBasicAuth("admin", "hunter2");
```
Parameters
- url: string | string[]
  
  Base URL of the ArangoDB server or list of server URLs. Equivalent to the url option in Config.
- Optional name: string
Returns Database

Accessors

isArangoDatabase

get isArangoDatabase(): true

internal

Indicates that this object represents an ArangoDB database.

Returns true

name

get name(): string

Name of the ArangoDB database this instance represents.

Returns string

queueTime

get queueTime(): QueueTimeMetrics

Methods for accessing the server-reported queue times of the mostly recently received responses.

Returns QueueTimeMetrics

Methods

acquireHostList

acquireHostList(): Promise<void>

Updates the URL list by requesting a list of all coordinators in the cluster and adding any endpoints not initially specified in the Config.

For long-running processes communicating with an ArangoDB cluster it is recommended to run this method periodically (e.g. once per hour) to make sure new coordinators are picked up correctly and can be used for fail-over or load balancing.
example
```
const db = new Database();
const interval = setInterval(
  () => db.acquireHostList(),
  5 * 60 * 1000 // every 5 minutes
);

// later
clearInterval(interval);
db.close();
```
Returns Promise<void>

analyzer

analyzer(analyzerName: string): Analyzer

Returns an Analyzer instance representing the Analyzer with the given analyzerName.
example
```
const db = new Database();
const analyzer = db.analyzer("some-analyzer");
const info = await analyzer.get();
```
Parameters
- analyzerName: string
Returns Analyzer

analyzers

analyzers(): Promise<Analyzer[]>

Fetches all Analyzers visible in the database and returns an array of Analyzer instances for those Analyzers.

See also Database.listAnalyzers.
example
```
const db = new Database();
const analyzers = await db.analyzers();
// analyzers is an array of Analyzer instances
```
Returns Promise<Analyzer[]>

beginTransaction

beginTransaction(collections: TransactionCollections, options?: TransactionOptions): Promise<Transaction>
beginTransaction(collections: (string | ArangoCollection)[], options?: TransactionOptions): Promise<Transaction>
beginTransaction(collection: string | ArangoCollection, options?: TransactionOptions): Promise<Transaction>

Begins a new streaming transaction for the given collections, then returns a Transaction instance for the transaction.

Collections can be specified as collection names (strings) or objects implementing the ArangoCollection interface: Collection, GraphVertexCollection, GraphEdgeCollection as well as (in TypeScript) DocumentCollection and EdgeCollection.
example
```
const vertices = db.collection("vertices");
const edges = db.collection("edges");
const trx = await db.beginTransaction({
  read: ["vertices"],
  write: [edges] // collection instances can be passed directly
});
const start = await trx.step(() => vertices.document("a"));
const end = await trx.step(() => vertices.document("b"));
await trx.step(() => edges.save({ _from: start._id, _to: end._id }));
await trx.commit();
```
Parameters
- collections: TransactionCollections
  
  Collections involved in the transaction.
- Optional options: TransactionOptions
  
  Options for the transaction.
Returns Promise<Transaction>
Begins a new streaming transaction for the given collections, then returns a Transaction instance for the transaction.

Collections can be specified as collection names (strings) or objects implementing the ArangoCollection interface: Collection, GraphVertexCollection, GraphEdgeCollection as well as (in TypeScript) DocumentCollection and EdgeCollection.
example
```
const vertices = db.collection("vertices");
const edges = db.collection("edges");
const trx = await db.beginTransaction([
  "vertices",
  edges // collection instances can be passed directly
]);
const start = await trx.step(() => vertices.document("a"));
const end = await trx.step(() => vertices.document("b"));
await trx.step(() => edges.save({ _from: start._id, _to: end._id }));
await trx.commit();
```
Parameters
- collections: (string | ArangoCollection)[]
  
  Collections that can be read from and written to during the transaction.
- Optional options: TransactionOptions
  
  Options for the transaction.
Returns Promise<Transaction>
Begins a new streaming transaction for the given collections, then returns a Transaction instance for the transaction.

The Collection can be specified as a collection name (string) or an object implementing the ArangoCollection interface: Collection, GraphVertexCollection, GraphEdgeCollection as well as (in TypeScript) DocumentCollection and EdgeCollection.
example
```
const vertices = db.collection("vertices");
const start = vertices.document("a");
const end = vertices.document("b");
const edges = db.collection("edges");
const trx = await db.beginTransaction(
  edges // collection instances can be passed directly
);
await trx.step(() => edges.save({ _from: start._id, _to: end._id }));
await trx.commit();
```
Parameters
- collection: string | ArangoCollection
- Optional options: TransactionOptions
  
  Options for the transaction.
Returns Promise<Transaction>

clearSlowQueries

clearSlowQueries(): Promise<void>

Clears the list of recent slow queries.

See also Database.listSlowQueries.
example
```
const db = new Database();
await db.clearSlowQueries();
// Slow query list is now cleared
```
Returns Promise<void>

clearUserAccessLevel

clearUserAccessLevel(username: string, __namedParameters: UserAccessLevelOptions): Promise<Record<string, AccessLevel> & ArangoResponseMetadata>

Clears the given ArangoDB user's access level for the database, or the given collection in the given database.

example

const db = new Database();
await db.clearUserAccessLevel("steve");
// The access level of the user "steve" has been cleared for the current
// database.

example

const db = new Database();
await db.clearUserAccessLevel("steve", { database: "staging" });
// The access level of the user "steve" has been cleared for the "staging"
// database.

example

const db = new Database();
await db.clearUserAccessLevel("steve", { collection: "pokemons" });
// The access level of the user "steve" has been cleared for the
// "pokemons" collection in the current database.

example

const db = new Database();
await db.clearUserAccessLevel("steve", {
  database: "staging",
  collection: "pokemons"
});
// The access level of the user "steve" has been cleared for the
// "pokemons" collection in the "staging" database.

example

const db = new Database();
const staging = db.database("staging");
await db.clearUserAccessLevel("steve", { database: staging });
// The access level of the user "steve" has been cleared for the "staging"
// database.

example

const db = new Database();
const staging = db.database("staging");
await db.clearUserAccessLevel("steve", {
  collection: staging.collection("pokemons")
});
// The access level of the user "steve" has been cleared for the
// "pokemons" collection in database "staging".

Parameters

username: string

Name of the ArangoDB user to clear the access level for.
__namedParameters: UserAccessLevelOptions

Returns Promise<Record<string, AccessLevel> & ArangoResponseMetadata>

close

close(): void

Closes all active connections of this database instance.

Can be used to clean up idling connections during longer periods of inactivity.

Note: This method currently has no effect in the browser version of arangojs.

example

const db = new Database();
const sessions = db.collection("sessions");
// Clean up expired sessions once per hour
setInterval(async () => {
  await db.query(aql`
    FOR session IN ${sessions}
    FILTER session.expires < DATE_NOW()
    REMOVE session IN ${sessions}
  `);
  // Making sure to close the connections because they're no longer used
  db.close();
}, 1000 * 60 * 60);

Returns void

collection

collection<T>(collectionName: string): DocumentCollection<T> & EdgeCollection<T>

Returns a Collection instance for the given collection name.

In TypeScript the collection implements both the DocumentCollection and EdgeCollection interfaces and can be cast to either type to enforce a stricter API.

example

const db = new Database();
const collection = db.collection("potatoes");

example

interface Person {
  name: string;
}
const db = new Database();
const persons = db.collection<Person>("persons");

example

interface Person {
  name: string;
}
interface Friend {
  startDate: number;
  endDate?: number;
}
const db = new Database();
const documents = db.collection("persons") as DocumentCollection<Person>;
const edges = db.collection("friends") as EdgeCollection<Friend>;

Type parameters

T: Record<string, any> = any

Type to use for document data. Defaults to any.

Parameters

collectionName: string

Name of the edge collection.

Returns DocumentCollection<T> & EdgeCollection<T>

collections

collections(excludeSystem?: boolean): Promise<(DocumentCollection<any> & EdgeCollection<any>)[]>

Fetches all collections from the database and returns an array of Collection instances.

In TypeScript these instances implement both the DocumentCollection and EdgeCollection interfaces and can be cast to either type to enforce a stricter API.

See also Database.listCollections.
example
```
const db = new Database();
const collections = await db.collections();
// collections is an array of DocumentCollection
// and EdgeCollection instances
// not including system collections
```
example
```
const db = new Database();
const collections = await db.collections(false);
// collections is an array of DocumentCollection
// and EdgeCollection instances
// including system collections
```
Parameters
- excludeSystem: boolean = true
  
  Whether system collections should be excluded.
Returns Promise<(DocumentCollection<any> & EdgeCollection<any>)[]>

commitLocalServiceState

commitLocalServiceState(replace?: boolean): Promise<void>

Writes all locally available services to the database and updates any service bundles missing in the database.
example
```
await db.commitLocalServiceState();
// all services available on the coordinator have been written to the db
```
example
```
await db.commitLocalServiceState(true);
// all service conflicts have been resolved in favor of this coordinator
```
Parameters
- replace: boolean = false
  
  If set to true, outdated services will also be committed. This can be used to solve some consistency problems when service bundles are missing in the database or were deleted manually.
Returns Promise<void>

createAnalyzer

createAnalyzer(analyzerName: string, options: CreateAnalyzerOptions): Promise<Analyzer>

Creates a new Analyzer with the given analyzerName and options, then returns an Analyzer instance for the new Analyzer.
example
```
const db = new Database();
const analyzer = await db.createAnalyzer("potatoes", { type: "identity" });
// the identity Analyzer "potatoes" now exists
```
Parameters
- analyzerName: string
  
  Name of the Analyzer.
- options: CreateAnalyzerOptions
  
  An object defining the properties of the Analyzer.
Returns Promise<Analyzer>

createCollection

createCollection<T>(collectionName: string, options?: CreateCollectionOptions & { type?: DOCUMENT_COLLECTION }): Promise<DocumentCollection<T>>
createCollection<T>(collectionName: string, options: CreateCollectionOptions & { type: EDGE_COLLECTION }): Promise<EdgeCollection<T>>

Creates a new collection with the given collectionName and options, then returns a DocumentCollection instance for the new collection.
example
```
const db = new Database();
const documents = db.createCollection("persons");
```
example
```
interface Person {
  name: string;
}
const db = new Database();
const documents = db.createCollection<Person>("persons");
```
Type parameters
- T: Record<string, any> = any
  
  Type to use for document data. Defaults to any.
Parameters
- collectionName: string
  
  Name of the new collection.
- Optional options: CreateCollectionOptions & { type?: DOCUMENT_COLLECTION }
  
  Options for creating the collection.
Returns Promise<DocumentCollection<T>>
Creates a new edge collection with the given collectionName and options, then returns an EdgeCollection instance for the new edge collection.
example
```
const db = new Database();
const edges = db.createCollection("friends", {
  type: CollectionType.EDGE_COLLECTION
});
```
example
```
interface Friend {
  startDate: number;
  endDate?: number;
}
const db = new Database();
const edges = db.createCollection<Friend>("friends", {
  type: CollectionType.EDGE_COLLECTION
});
```
Type parameters
- T: Record<string, any> = any
  
  Type to use for edge document data. Defaults to any.
Parameters
- collectionName: string
  
  Name of the new collection.
- options: CreateCollectionOptions & { type: EDGE_COLLECTION }
  
  Options for creating the collection.
Returns Promise<EdgeCollection<T>>

createDatabase

createDatabase(databaseName: string, options?: CreateDatabaseOptions): Promise<Database>
createDatabase(databaseName: string, users: CreateDatabaseUser[]): Promise<Database>

Creates a new database with the given databaseName with the given options and returns a Database instance for that database.
example
```
const db = new Database();
const info = await db.createDatabase("mydb", {
  users: [{ username: "root" }]
});
// the database has been created
db.useDatabase("mydb");
db.useBasicAuth("root", "");
```
Parameters
- databaseName: string
  
  Name of the database to create.
- Optional options: CreateDatabaseOptions
  
  Options for creating the database.
Returns Promise<Database>
Creates a new database with the given databaseName with the given users and returns a Database instance for that database.
example
```
const db = new Database();
const info = await db.createDatabase("mydb", [{ username: "root" }]);
// the database has been created
db.useDatabase("mydb");
db.useBasicAuth("root", "");
```
Parameters
- databaseName: string
  
  Name of the database to create.
- users: CreateDatabaseUser[]
  
  Database users to create with the database.
Returns Promise<Database>

createEdgeCollection

createEdgeCollection<T>(collectionName: string, options?: CreateCollectionOptions): Promise<EdgeCollection<T>>

Creates a new edge collection with the given collectionName and options, then returns an EdgeCollection instance for the new edge collection.

This is a convenience method for calling Database.createCollection with options.type set to EDGE_COLLECTION.
example
```
const db = new Database();
const edges = db.createEdgeCollection("friends");
```
example
```
interface Friend {
  startDate: number;
  endDate?: number;
}
const db = new Database();
const edges = db.createEdgeCollection<Friend>("friends");
```
Type parameters
- T: Record<string, any> = any
  
  Type to use for edge document data. Defaults to any.
Parameters
- collectionName: string
  
  Name of the new collection.
- Optional options: CreateCollectionOptions
  
  Options for creating the collection.
Returns Promise<EdgeCollection<T>>

createFunction

createFunction(name: string, code: string, isDeterministic?: boolean): Promise<ArangoResponseMetadata & { isNewlyCreated: boolean }>

Creates an AQL user function with the given name and code if it does not already exist or replaces it if a function with the same name already existed.
example
```
const db = new Database();
await db.createFunction(
  "ACME::ACCOUNTING::CALCULATE_VAT",
  "(price) => price * 0.19"
);
// Use the new function in an AQL query with template handler:
const cursor = await db.query(aql`
  FOR product IN products
  RETURN MERGE(
    { vat: ACME::ACCOUNTING::CALCULATE_VAT(product.price) },
    product
  )
`);
// cursor is a cursor for the query result
```
Parameters
- name: string
  
  A valid AQL function name. The function name must consist of at least two alphanumeric identifiers separated with double colons.
- code: string
  
  A string evaluating to a JavaScript function (not a JavaScript function object).
- isDeterministic: boolean = false
  
  If set to true, the function is expected to always return the same result for equivalent inputs. This option currently has no effect but may allow for optimizations in the future.
Returns Promise<ArangoResponseMetadata & { isNewlyCreated: boolean }>

createGraph

createGraph(graphName: string, edgeDefinitions: EdgeDefinitionOptions[], options?: GraphCreateOptions): Promise<Graph>

Creates a graph with the given graphName and edgeDefinitions, then returns a Graph instance for the new graph.

Parameters
- graphName: string
  
  Name of the graph to be created.
- edgeDefinitions: EdgeDefinitionOptions[]
  
  An array of edge definitions.
- Optional options: GraphCreateOptions
  
  An object defining the properties of the graph.
Returns Promise<Graph>

createUser

createUser(username: string, passwd: string): Promise<ArangoUser & ArangoResponseMetadata>
createUser(username: string, options: UserOptions): Promise<ArangoUser & ArangoResponseMetadata>

Creates a new ArangoDB user with the given password.
example
```
const db = new Database();
const user = await db.createUser("steve", "hunter2");
// The user "steve" has been created
```
Parameters
- username: string
  
  Name of the ArangoDB user to create.
- passwd: string
  
  Password of the new ArangoDB user.
Returns Promise<ArangoUser & ArangoResponseMetadata>
Creates a new ArangoDB user with the given options.
example
```
const db = new Database();
const user = await db.createUser("steve", { passwd: "hunter2" });
// The user "steve" has been created
```
Parameters
- username: string
  
  Name of the ArangoDB user to create.
- options: UserOptions
  
  Additional options for creating the ArangoDB user.
Returns Promise<ArangoUser & ArangoResponseMetadata>

createView

createView(viewName: string, options?: ArangoSearchViewPropertiesOptions): Promise<ArangoSearchView>

Creates a new ArangoSearch View with the given viewName and options and returns an ArangoSearchView instance for the created View.
example
```
const db = new Database();
const view = await db.createView("potatoes");
// the ArangoSearch View "potatoes" now exists
```
Parameters
- viewName: string
  
  Name of the ArangoSearch View.
- Optional options: ArangoSearchViewPropertiesOptions
  
  An object defining the properties of the View.
Returns Promise<ArangoSearchView>

database(databaseName: string): Database

Creates a new Database instance for the given databaseName that shares this database's connection pool.

See also Database.constructor.
example
```
const systemDb = new Database();
const myDb = system.database("my_database");
```
Parameters
- databaseName: string
  
  Name of the database.
Returns Database

databases

databases(): Promise<Database[]>

Fetches all databases from the server and returns an array of Database instances for those databases.

See also Database.listDatabases and Database.userDatabases.
example
```
const db = new Database();
const names = await db.databases();
// databases is an array of databases
```
Returns Promise<Database[]>

downloadService

downloadService(mount: string): Promise<Buffer | Blob>

Retrieves a zip bundle containing the service files.

Returns a Buffer in node.js or Blob in the browser.
example
```
const db = new Database();
const serviceBundle = await db.downloadService("/my-foxx");
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
Returns Promise<Buffer | Blob>

dropDatabase

dropDatabase(databaseName: string): Promise<boolean>

Deletes the database with the given databaseName from the server.
example
```
const db = new Database();
await db.dropDatabase("mydb");
// database "mydb" no longer exists
```
Parameters
- databaseName: string
  
  Name of the database to delete.
Returns Promise<boolean>

dropFunction

dropFunction(name: string, group?: boolean): Promise<ArangoResponseMetadata & { deletedCount: number }>

Deletes the AQL user function with the given name from the database.
example
```
const db = new Database();
await db.dropFunction("ACME::ACCOUNTING::CALCULATE_VAT");
// the function no longer exists
```
Parameters
- name: string
  
  The name of the user function to drop.
- group: boolean = false
  
  If set to true, all functions with a name starting with name will be deleted, otherwise only the function with the exact name will be deleted.
Returns Promise<ArangoResponseMetadata & { deletedCount: number }>

executeTransaction

executeTransaction(collections: TransactionCollections & { allowImplicit?: boolean }, action: string, options?: TransactionOptions & { params?: any }): Promise<any>
executeTransaction(collections: (string | ArangoCollection)[], action: string, options?: TransactionOptions & { params?: any }): Promise<any>
executeTransaction(collection: string | ArangoCollection, action: string, options?: TransactionOptions & { params?: any }): Promise<any>

Performs a server-side JavaScript transaction and returns its return value.

Collections can be specified as collection names (strings) or objects implementing the ArangoCollection interface: Collection, GraphVertexCollection, GraphEdgeCollection as well as (in TypeScript) DocumentCollection and EdgeCollection.

Note: The action function will be evaluated and executed on the server inside ArangoDB's embedded JavaScript environment and can not access any values other than those passed via the params option.

See the official ArangoDB documentation for the JavaScript @arangodb module for information about accessing the database from within ArangoDB's server-side JavaScript environment.
example
```
const db = new Database();

const action = `
  function(params) {
    // This code will be executed inside ArangoDB!
    const { query } = require("@arangodb");
    return query\`
        FOR user IN _users
        FILTER user.age > ${params.age}
        RETURN u.user
      \`.toArray();
  }
`);

const result = await db.executeTransaction({
  read: ["_users"]
}, action, {
  params: { age: 12 }
});
// result contains the return value of the action
```
Parameters
- collections: TransactionCollections & { allowImplicit?: boolean }
  
  Collections involved in the transaction.
- action: string
  
  A string evaluating to a JavaScript function to be executed on the server.
- Optional options: TransactionOptions & { params?: any }
  
  Options for the transaction. If options.allowImplicit is specified, it will be used if collections.allowImplicit was not specified.
Returns Promise<any>
Performs a server-side transaction and returns its return value.

Collections can be specified as collection names (strings) or objects implementing the ArangoCollection interface: Collection, GraphVertexCollection, GraphEdgeCollection as well as (in TypeScript) DocumentCollection and EdgeCollection.

Note: The action function will be evaluated and executed on the server inside ArangoDB's embedded JavaScript environment and can not access any values other than those passed via the params option. See the official ArangoDB documentation for the JavaScript @arangodb module for information about accessing the database from within ArangoDB's server-side JavaScript environment.
example
```
const db = new Database();

const action = `
  function(params) {
    // This code will be executed inside ArangoDB!
    const { query } = require("@arangodb");
    return query\`
        FOR user IN _users
        FILTER user.age > ${params.age}
        RETURN u.user
      \`.toArray();
  }
`);

const result = await db.executeTransaction(["_users"], action, {
  params: { age: 12 }
});
// result contains the return value of the action
```
Parameters
- collections: (string | ArangoCollection)[]
  
  Collections that can be read from and written to during the transaction.
- action: string
  
  A string evaluating to a JavaScript function to be executed on the server.
- Optional options: TransactionOptions & { params?: any }
  
  Options for the transaction.
Returns Promise<any>
Performs a server-side transaction and returns its return value.

The Collection can be specified as a collection name (string) or an object implementing the ArangoCollection interface: Collection, GraphVertexCollection, GraphEdgeCollection as well as (in TypeScript) DocumentCollection and EdgeCollection.

Note: The action function will be evaluated and executed on the server inside ArangoDB's embedded JavaScript environment and can not access any values other than those passed via the params option. See the official ArangoDB documentation for the JavaScript @arangodb module for information about accessing the database from within ArangoDB's server-side JavaScript environment.
example
```
const db = new Database();

const action = `
  function(params) {
    // This code will be executed inside ArangoDB!
    const { query } = require("@arangodb");
    return query\`
        FOR user IN _users
        FILTER user.age > ${params.age}
        RETURN u.user
      \`.toArray();
  }
`);

const result = await db.executeTransaction("_users", action, {
  params: { age: 12 }
});
// result contains the return value of the action
```
Parameters
- collection: string | ArangoCollection
  
  A collection that can be read from and written to during the transaction.
- action: string
  
  A string evaluating to a JavaScript function to be executed on the server.
- Optional options: TransactionOptions & { params?: any }
  
  Options for the transaction.
Returns Promise<any>

exists

exists(): Promise<boolean>

Checks whether the database exists.

example

const db = new Database();
const result = await db.exists();
// result indicates whether the database exists

Returns Promise<boolean>

explain

explain(query: AqlQuery, options?: ExplainOptions & { allPlans?: false }): Promise<ArangoResponseMetadata & SingleExplainResult>
explain(query: AqlQuery, options?: ExplainOptions & { allPlans: true }): Promise<ArangoResponseMetadata & MultiExplainResult>
explain(query: string | AqlLiteral, bindVars?: Dict<any>, options?: ExplainOptions & { allPlans?: false }): Promise<ArangoResponseMetadata & SingleExplainResult>
explain(query: string | AqlLiteral, bindVars?: Dict<any>, options?: ExplainOptions & { allPlans: true }): Promise<ArangoResponseMetadata & MultiExplainResult>

Explains a database query using the given query.

See the aql template string handler for information about how to create a query string without manually defining bind parameters nor having to worry about escaping variables.
example
```
const db = new Database();
const collection = db.collection("some-collection");
const explanation = await db.explain(aql`
  FOR doc IN ${collection}
  FILTER doc.flavor == "strawberry"
  RETURN doc._key
`);
```
Parameters
- query: AqlQuery
  
  An object containing an AQL query string and bind parameters, e.g. the object returned from an aql template string.
- Optional options: ExplainOptions & { allPlans?: false }
  
  Options for explaining the query.
Returns Promise<ArangoResponseMetadata & SingleExplainResult>
Explains a database query using the given query.

See the aql template string handler for information about how to create a query string without manually defining bind parameters nor having to worry about escaping variables.
example
```
const db = new Database();
const collection = db.collection("some-collection");
const explanation = await db.explain(
  aql`
    FOR doc IN ${collection}
    FILTER doc.flavor == "strawberry"
    RETURN doc._key
  `,
  { allPlans: true }
);
```
Parameters
- query: AqlQuery
  
  An object containing an AQL query string and bind parameters, e.g. the object returned from an aql template string.
- Optional options: ExplainOptions & { allPlans: true }
  
  Options for explaining the query.
Returns Promise<ArangoResponseMetadata & MultiExplainResult>
Explains a database query using the given query and bindVars.

See the aql template string handler for a safer and easier alternative to passing strings directly.
example
```
const db = new Database();
const collection = db.collection("some-collection");
const explanation = await db.explain(
  `
    FOR doc IN @@collection
    FILTER doc.flavor == "strawberry"
    RETURN doc._key
  `,
  { "@collection": collection.name }
);
```
Parameters
- query: string | AqlLiteral
  
  An AQL query string.
- Optional bindVars: Dict<any>
  
  An object defining bind parameters for the query.
- Optional options: ExplainOptions & { allPlans?: false }
  
  Options for explaining the query.
Returns Promise<ArangoResponseMetadata & SingleExplainResult>
Explains a database query using the given query and bindVars.

See the aql template string handler for a safer and easier alternative to passing strings directly.
example
```
const db = new Database();
const collection = db.collection("some-collection");
const explanation = await db.explain(
  `
    FOR doc IN @@collection
    FILTER doc.flavor == "strawberry"
    RETURN doc._key
  `,
  { "@collection": collection.name },
  { allPlans: true }
);
```
Parameters
- query: string | AqlLiteral
  
  An AQL query string.
- Optional bindVars: Dict<any>
  
  An object defining bind parameters for the query.
- Optional options: ExplainOptions & { allPlans: true }
  
  Options for explaining the query.
Returns Promise<ArangoResponseMetadata & MultiExplainResult>

get

get(): Promise<DatabaseInfo>

Fetches the database description for the active database from the server.
example
```
const db = new Database();
const info = await db.get();
// the database exists
```
Returns Promise<DatabaseInfo>

getService

getService(mount: string): Promise<ServiceInfo>

Retrieves information about a mounted service.
example
```
const db = new Database();
const info = await db.getService("/my-service");
// info contains detailed information about the service
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
Returns Promise<ServiceInfo>

getServiceConfiguration

getServiceConfiguration(mount: string, minimal?: false): Promise<Dict<ServiceConfiguration>>
getServiceConfiguration(mount: string, minimal: true): Promise<Dict<any>>

Retrieves information about the service's configuration options and their current values.

See also Database.replaceServiceConfiguration and Database.updateServiceConfiguration.
example
```
const db = new Database();
const config = await db.getServiceConfiguration("/my-service");
for (const [key, option] of Object.entries(config)) {
  console.log(`${option.title} (${key}): ${option.current}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- Optional minimal: false
  
  If set to true, the result will only include each configuration option's current value. Otherwise it will include the full definition for each option.
Returns Promise<Dict<ServiceConfiguration>>
Retrieves information about the service's configuration options and their current values.

See also Database.replaceServiceConfiguration and Database.updateServiceConfiguration.
example
```
const db = new Database();
const config = await db.getServiceConfiguration("/my-service", true);
for (const [key, value] of Object.entries(config)) {
  console.log(`${key}: ${value}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- minimal: true
  
  If set to true, the result will only include each configuration option's current value. Otherwise it will include the full definition for each option.
Returns Promise<Dict<any>>

getServiceDependencies

getServiceDependencies(mount: string, minimal?: false): Promise<Dict<SingleServiceDependency | MultiServiceDependency>>
getServiceDependencies(mount: string, minimal: true): Promise<Dict<undefined | string | string[]>>

Retrieves information about the service's dependencies and their current mount points.

See also Database.replaceServiceDependencies and Database.updateServiceDependencies.
example
```
const db = new Database();
const deps = await db.getServiceDependencies("/my-service");
for (const [key, dep] of Object.entries(deps)) {
  console.log(`${dep.title} (${key}): ${dep.current}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- Optional minimal: false
  
  If set to true, the result will only include each dependency's current mount point. Otherwise it will include the full definition for each dependency.
Returns Promise<Dict<SingleServiceDependency | MultiServiceDependency>>
Retrieves information about the service's dependencies and their current mount points.

See also Database.replaceServiceDependencies and Database.updateServiceDependencies.
example
```
const db = new Database();
const deps = await db.getServiceDependencies("/my-service", true);
for (const [key, value] of Object.entries(deps)) {
  console.log(`${key}: ${value}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- minimal: true
  
  If set to true, the result will only include each dependency's current mount point. Otherwise it will include the full definition for each dependency.
Returns Promise<Dict<undefined | string | string[]>>

getServiceDocumentation

getServiceDocumentation(mount: string): Promise<SwaggerJson>

Retrieves an Open API compatible Swagger API description object for the service installed at the given mount point.
example
```
const db = new Database();
const spec = await db.getServiceDocumentation("/my-service");
// spec is a Swagger API description of the service
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
Returns Promise<SwaggerJson>

getServiceReadme

getServiceReadme(mount: string): Promise<undefined | string>

Retrieves the text content of the service's README or README.md file.

Returns undefined if no such file could be found.
example
```
const db = new Database();
const readme = await db.getServiceReadme("/my-service");
if (readme !== undefined) console.log(readme);
else console.warn(`No README found.`)
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
Returns Promise<undefined | string>

getUser

getUser(username: string): Promise<ArangoUser & ArangoResponseMetadata>

Fetches the user data of a single ArangoDB user.
example
```
const db = new Database();
const user = await db.getUser("steve");
// user is the user object for the user named "steve"
```
Parameters
- username: string
  
  Name of the ArangoDB user to fetch.
Returns Promise<ArangoUser & ArangoResponseMetadata>

getUserAccessLevel

getUserAccessLevel(username: string, __namedParameters: UserAccessLevelOptions): Promise<AccessLevel>

Fetches the given ArangoDB user's access level for the database, or the given collection in the given database.

example

const db = new Database();
const accessLevel = await db.getUserAccessLevel("steve");
// The access level of the user "steve" has been fetched for the current
// database.

example

const db = new Database();
const accessLevel = await db.getUserAccessLevel("steve", {
  database: "staging"
});
// The access level of the user "steve" has been fetched for the "staging"
// database.

example

const db = new Database();
const accessLevel = await db.getUserAccessLevel("steve", {
  collection: "pokemons"
});
// The access level of the user "steve" has been fetched for the
// "pokemons" collection in the current database.

example

const db = new Database();
const accessLevel = await db.getUserAccessLevel("steve", {
  database: "staging",
  collection: "pokemons"
});
// The access level of the user "steve" has been fetched for the
// "pokemons" collection in the "staging" database.

example

const db = new Database();
const staging = db.database("staging");
const accessLevel = await db.getUserAccessLevel("steve", {
  database: staging
});
// The access level of the user "steve" has been fetched for the "staging"
// database.

example

const db = new Database();
const staging = db.database("staging");
const accessLevel = await db.getUserAccessLevel("steve", {
  collection: staging.collection("pokemons")
});
// The access level of the user "steve" has been fetched for the
// "pokemons" collection in database "staging".

Parameters

username: string

Name of the ArangoDB user to fetch the access level for.
__namedParameters: UserAccessLevelOptions

Returns Promise<AccessLevel>

getUserDatabases

getUserDatabases(username: string, full?: false): Promise<Record<string, AccessLevel>>
getUserDatabases(username: string, full: true): Promise<Record<string, { collections: Record<string, "undefined" | "none" | "rw" | "ro">; permission: AccessLevel }>>

Fetches an object mapping names of databases to the access level of the given ArangoDB user for those databases.
example
```
const db = new Database();
const accessLevels = await db.getUserDatabases("steve");
for (const [databaseName, accessLevel] of Object.entries(accessLevels)) {
  console.log(`${databaseName}: ${accessLevel}`);
}
```
Parameters
- username: string
  
  Name of the ArangoDB user to fetch the access levels for.
- Optional full: false
  
  Whether access levels for collections should be included.
Returns Promise<Record<string, AccessLevel>>
Fetches an object mapping names of databases to the access level of the given ArangoDB user for those databases and the collections within each database.
example
```
const db = new Database();
const accessLevels = await db.getUserDatabases("steve", true);
for (const [databaseName, obj] of Object.entries(accessLevels)) {
  console.log(`${databaseName}: ${obj.permission}`);
  for (const [collectionName, accessLevel] of Object.entries(obj.collections)) {
    console.log(`${databaseName}/${collectionName}: ${accessLevel}`);
  }
}
```
Parameters
- username: string
  
  Name of the ArangoDB user to fetch the access levels for.
- full: true
  
  Whether access levels for collections should be included.
Returns Promise<Record<string, { collections: Record<string, "undefined" | "none" | "rw" | "ro">; permission: AccessLevel }>>

graph

graph(graphName: string): Graph

Returns a Graph instance representing the graph with the given graphName.
example
```
const db = new Database();
const graph = db.graph("some-graph");
```
Parameters
- graphName: string
  
  Name of the graph.
Returns Graph

graphs

graphs(): Promise<Graph[]>

Fetches all graphs from the database and returns an array of Graph instances for those graphs.

See also Database.listGraphs.
example
```
const db = new Database();
const graphs = await db.graphs();
// graphs is an array of Graph instances
```
Returns Promise<Graph[]>

installService

installService(mount: string, source: string | Buffer | Blob | Readable, options?: InstallServiceOptions): Promise<ServiceInfo>

Installs a new service.

example

const db = new Database();
// Using a node.js file stream as source
const source = fs.createReadStream("./my-foxx-service.zip");
const info = await db.installService("/hello", source);

example

const db = new Database();
// Using a node.js Buffer as source
const source = fs.readFileSync("./my-foxx-service.zip");
const info = await db.installService("/hello", source);

example

const db = new Database();
// Using a File (Blob) from a browser file input
const element = document.getElementById("my-file-input");
const source = element.files[0];
const info = await db.installService("/hello", source);

Parameters

mount: string

The service's mount point, relative to the database.
source: string | Buffer | Blob | Readable

The service bundle to install.
options: InstallServiceOptions = {}

Options for installing the service.

Returns Promise<ServiceInfo>

killQuery

killQuery(queryId: string): Promise<void>

Kills a running query with the given queryId.

Parameters

queryId: string

The ID of a currently running query.

Returns Promise<void>

listAnalyzers

listAnalyzers(): Promise<AnalyzerDescription[]>

Fetches all Analyzers visible in the database and returns an array of Analyzer descriptions.

See also Database.analyzers.
example
```
const db = new Database();
const analyzers = await db.listAnalyzers();
// analyzers is an array of Analyzer descriptions
```
Returns Promise<AnalyzerDescription[]>

listCollections

listCollections(excludeSystem?: boolean): Promise<CollectionMetadata[]>

Fetches all collections from the database and returns an array of collection descriptions.

Parameters

excludeSystem: boolean = true

Whether system collections should be excluded.

Returns Promise<CollectionMetadata[]>

listDatabases

listDatabases(): Promise<string[]>

Fetches all databases from the server and returns an array of their names.

See also Database.databases and Database.listUserDatabases.
example
```
const db = new Database();
const names = await db.listDatabases();
// databases is an array of database names
```
Returns Promise<string[]>

listFunctions

listFunctions(): Promise<AqlUserFunction[]>

Fetches a list of all AQL user functions registered with the database.

example

const db = new Database();
const functions = await db.listFunctions();
const names = functions.map(fn => fn.name);

Returns Promise<AqlUserFunction[]>

listGraphs

listGraphs(): Promise<GraphInfo[]>

Fetches all graphs from the database and returns an array of graph descriptions.

See also Database.graphs.
example
```
const db = new Database();
const graphs = await db.listGraphs();
// graphs is an array of graph descriptions
```
Returns Promise<GraphInfo[]>

listRunningQueries

listRunningQueries(): Promise<QueryInfo[]>

Fetches a list of information for all currently running queries.

See also Database.listSlowQueries and Database.killQuery.
example
```
const db = new Database();
const queries = await db.listRunningQueries();
```
Returns Promise<QueryInfo[]>

listServiceScripts

listServiceScripts(mount: string): Promise<Dict<string>>

Retrieves a list of scripts defined in the service manifest's "scripts" section mapped to their human readable representations.
example
```
const db = new Database();
const scripts = await db.listServiceScripts("/my-service");
for (const [name, title] of Object.entries(scripts)) {
  console.log(`${name}: ${title}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
Returns Promise<Dict<string>>

listServices

listServices(excludeSystem?: boolean): Promise<ServiceSummary[]>

Fetches a list of all installed service.

example

const db = new Database();
const services = await db.listServices();

example

const db = new Database();
const services = await db.listServices(false); // all services

Parameters

excludeSystem: boolean = true

Whether system services should be excluded.

Returns Promise<ServiceSummary[]>

listSlowQueries

listSlowQueries(): Promise<QueryInfo[]>

Fetches a list of information for all recent slow queries.

See also Database.listRunningQueries and Database.clearSlowQueries.
example
```
const db = new Database();
const queries = await db.listSlowQueries();
// Only works if slow query tracking is enabled
```
Returns Promise<QueryInfo[]>

listTransactions

listTransactions(): Promise<TransactionDetails[]>

Fetches all active transactions from the database and returns an array of transaction descriptions.

See also Database.transactions.
example
```
const db = new Database();
const transactions = await db.listTransactions();
// transactions is an array of transaction descriptions
```
Returns Promise<TransactionDetails[]>

listUserDatabases

listUserDatabases(): Promise<string[]>

Fetches all databases accessible to the active user from the server and returns an array of their names.

See also Database.userDatabases and Database.listDatabases.
example
```
const db = new Database();
const names = await db.listUserDatabases();
// databases is an array of database names
```
Returns Promise<string[]>

listUsers

listUsers(): Promise<ArangoUser[]>

Fetches all ArangoDB users visible to the authenticated user and returns an array of user objects.
example
```
const db = new Database();
const users = await db.listUsers();
// users is an array of user objects
```
Returns Promise<ArangoUser[]>

listViews

listViews(): Promise<ViewDescription[]>

Fetches all Views from the database and returns an array of View descriptions.

See also Database.views.
example
```
const db = new Database();

const views = await db.listViews();
// views is an array of View descriptions
```
Returns Promise<ViewDescription[]>

login

Validates the given database credentials and exchanges them for an authentication token, then uses the authentication token for future requests and returns it.
example
```
const db = new Database();
db.useDatabase("test");
await db.login("admin", "hunter2");
// The database instance now uses the database "test"
// with an authentication token for the "admin" user.
```
Parameters
- username: string = "root"
  
  The username to authenticate with.
- password: string = ""
  
  The password to authenticate with.
Returns Promise<string>

parse

parse(query: string | AqlQuery | AqlLiteral): Promise<ParseResult>

Parses the given query and returns the result.

See the aql template string handler for information about how to create a query string without manually defining bind parameters nor having to worry about escaping variables.
example
```
const db = new Database();
const collection = db.collection("some-collection");
const ast = await db.parse(aql`
  FOR doc IN ${collection}
  FILTER doc.flavor == "strawberry"
  RETURN doc._key
`);
```
Parameters
- query: string | AqlQuery | AqlLiteral
  
  An AQL query string or an object containing an AQL query string and bind parameters, e.g. the object returned from an aql template string.
Returns Promise<ParseResult>

query

query(query: AqlQuery, options?: QueryOptions): Promise<ArrayCursor<any>>
query(query: string | AqlLiteral, bindVars?: Dict<any>, options?: QueryOptions): Promise<ArrayCursor<any>>

Performs a database query using the given query, then returns a new ArrayCursor instance for the result set.

See the aql template string handler for information about how to create a query string without manually defining bind parameters nor having to worry about escaping variables.

example

const db = new Database();
const active = true;

// Using an aql template string
const cursor = await db.query(aql`
  FOR u IN _users
  FILTER u.authData.active == ${active}
  RETURN u.user
`);
// cursor is a cursor for the query result

example

const db = new Database();
const active = true;

// Using an object with a regular multi-line string
const cursor = await db.query({
  query: `
    FOR u IN _users
    FILTER u.authData.active == @active
    RETURN u.user
  `,
  bindVars: { active: active }
});

Parameters

query: AqlQuery

An object containing an AQL query string and bind parameters, e.g. the object returned from an aql template string.
Optional options: QueryOptions

Options for the query execution.

Returns Promise<ArrayCursor<any>>

Performs a database query using the given query and bindVars, then returns a new ArrayCursor instance for the result set.

See the aql template string handler for a safer and easier alternative to passing strings directly.

example

const db = new Database();
const active = true;

const cursor = await db.query(
  // A normal multi-line string
  `
    FOR u IN _users
    FILTER u.authData.active == @active
    RETURN u.user
  `,
  { active: active }
);

example

const db = new Database();
const active = true;

const cursor = await db.query(
  // An AQL literal created from a normal multi-line string
  aql.literal(`
    FOR u IN _users
    FILTER u.authData.active == @active
    RETURN u.user
  `),
  { active: active }
);

Parameters

query: string | AqlLiteral

An AQL query string.
Optional bindVars: Dict<any>

An object defining bind parameters for the query.
Optional options: QueryOptions

Options for the query execution.

Returns Promise<ArrayCursor<any>>

queryTracking

queryTracking(): Promise<QueryTracking>
queryTracking(options: QueryTrackingOptions): Promise<QueryTracking>

Fetches the query tracking properties.

example

const db = new Database();
const tracking = await db.queryTracking();
console.log(tracking.enabled);

Returns Promise<QueryTracking>

Modifies the query tracking properties.

example

const db = new Database();
// track up to 5 slow queries exceeding 5 seconds execution time
await db.setQueryTracking({
  enabled: true,
  trackSlowQueries: true,
  maxSlowQueries: 5,
  slowQueryThreshold: 5
});

Parameters

options: QueryTrackingOptions

Options for query tracking.

Returns Promise<QueryTracking>

removeUser

removeUser(username: string): Promise<ArangoResponseMetadata>

Removes the ArangoDB user with the given username from the server.
example
```
const db = new Database();
await db.removeUser("steve");
// The user "steve" has been removed
```
Parameters
- username: string
  
  Name of the ArangoDB user to remove.
Returns Promise<ArangoResponseMetadata>

renameCollection

renameCollection(collectionName: string, newName: string): Promise<ArangoResponseMetadata & CollectionMetadata>

Renames the collection collectionName to newName.

Additionally removes any stored Collection instance for collectionName from the Database instance's internal cache.

Note: Renaming collections may not be supported when ArangoDB is running in a cluster configuration.

Parameters
- collectionName: string
  
  Current name of the collection.
- newName: string
  
  The new name of the collection.
Returns Promise<ArangoResponseMetadata & CollectionMetadata>

renameView

renameView(viewName: string, newName: string): Promise<ArangoResponseMetadata & ViewDescription>

Renames the view viewName to newName.

Additionally removes any stored View instance for viewName from the Database instance's internal cache.

Note: Renaming views may not be supported when ArangoDB is running in a cluster configuration.

Parameters
- viewName: string
  
  Current name of the view.
- newName: string
  
  The new name of the view.
Returns Promise<ArangoResponseMetadata & ViewDescription>

replaceService

replaceService(mount: string, source: string | Buffer | Blob | Readable, options?: ReplaceServiceOptions): Promise<ServiceInfo>

Replaces an existing service with a new service by completely removing the old service and installing a new service at the same mount point.

example

const db = new Database();
// Using a node.js file stream as source
const source = fs.createReadStream("./my-foxx-service.zip");
const info = await db.replaceService("/hello", source);

example

const db = new Database();
// Using a node.js Buffer as source
const source = fs.readFileSync("./my-foxx-service.zip");
const info = await db.replaceService("/hello", source);

example

const db = new Database();
// Using a File (Blob) from a browser file input
const element = document.getElementById("my-file-input");
const source = element.files[0];
const info = await db.replaceService("/hello", source);

Parameters

mount: string

The service's mount point, relative to the database.
source: string | Buffer | Blob | Readable

The service bundle to install.
options: ReplaceServiceOptions = {}

Options for replacing the service.

Returns Promise<ServiceInfo>

replaceServiceConfiguration

replaceServiceConfiguration(mount: string, cfg: Dict<any>, minimal?: false): Promise<Dict<ServiceConfiguration & { warning?: string }>>
replaceServiceConfiguration(mount: string, cfg: Dict<any>, minimal: true): Promise<{ values: Dict<any>; warnings: Dict<undefined | string> }>

Replaces the configuration of the given service, discarding any existing values for options not specified.

See also Database.updateServiceConfiguration and Database.getServiceConfiguration.
example
```
const db = new Database();
const config = { currency: "USD", locale: "en-US" };
const info = await db.replaceServiceConfiguration("/my-service", config);
for (const [key, option] of Object.entries(info)) {
  console.log(`${option.title} (${key}): ${option.value}`);
  if (option.warning) console.warn(`Warning: ${option.warning}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- cfg: Dict<any>
  
  An object mapping configuration option names to values.
- Optional minimal: false
  
  If set to true, the result will only include each configuration option's current value and warning (if any). Otherwise it will include the full definition for each option.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full configuration definitions.
Returns Promise<Dict<ServiceConfiguration & { warning?: string }>>
Replaces the configuration of the given service, discarding any existing values for options not specified.

See also Database.updateServiceConfiguration and Database.getServiceConfiguration.
example
```
const db = new Database();
const config = { currency: "USD", locale: "en-US" };
const info = await db.replaceServiceConfiguration("/my-service", config);
for (const [key, value] of Object.entries(info.values)) {
  console.log(`${key}: ${value}`);
  if (info.warnings[key]) console.warn(`Warning: ${info.warnings[key]}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- cfg: Dict<any>
  
  An object mapping configuration option names to values.
- minimal: true
  
  If set to true, the result will only include each configuration option's current value and warning (if any). Otherwise it will include the full definition for each option.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full configuration definitions.
Returns Promise<{ values: Dict<any>; warnings: Dict<undefined | string> }>

replaceServiceDependencies

replaceServiceDependencies(mount: string, deps: Dict<string>, minimal?: false): Promise<Dict<(SingleServiceDependency & { warning?: string }) | (MultiServiceDependency & { warning?: string })>>
replaceServiceDependencies(mount: string, deps: Dict<string>, minimal: true): Promise<{ values: Dict<string>; warnings: Dict<undefined | string> }>

Replaces the dependencies of the given service, discarding any existing mount points for dependencies not specified.

See also Database.updateServiceDependencies and Database.getServiceDependencies.
example
```
const db = new Database();
const deps = { mailer: "/mailer-api", auth: "/remote-auth" };
const info = await db.replaceServiceDependencies("/my-service", deps);
for (const [key, dep] of Object.entries(info)) {
  console.log(`${dep.title} (${key}): ${dep.current}`);
  if (dep.warning) console.warn(`Warning: ${dep.warning}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- deps: Dict<string>
- Optional minimal: false
  
  If set to true, the result will only include each dependency's current mount point. Otherwise it will include the full definition for each dependency.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full dependency definitions.
Returns Promise<Dict<(SingleServiceDependency & { warning?: string }) | (MultiServiceDependency & { warning?: string })>>
Replaces the dependencies of the given service, discarding any existing mount points for dependencies not specified.

See also Database.updateServiceDependencies and Database.getServiceDependencies.
example
```
const db = new Database();
const deps = { mailer: "/mailer-api", auth: "/remote-auth" };
const info = await db.replaceServiceDependencies(
  "/my-service",
  deps,
  true
);
for (const [key, value] of Object.entries(info)) {
  console.log(`${key}: ${value}`);
  if (info.warnings[key]) console.warn(`Warning: ${info.warnings[key]}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- deps: Dict<string>
- minimal: true
  
  If set to true, the result will only include each dependency's current mount point. Otherwise it will include the full definition for each dependency.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full dependency definitions.
Returns Promise<{ values: Dict<string>; warnings: Dict<undefined | string> }>

replaceUser

replaceUser(username: string, options: UserOptions): Promise<ArangoUser & ArangoResponseMetadata>

Replaces the ArangoDB user's option with the new options.
example
```
const db = new Database();
const user = await db.replaceUser("steve", { passwd: "", active: false });
// The user "steve" has been set to inactive with an empty password
```
Parameters
- username: string
  
  Name of the ArangoDB user to modify.
- options: UserOptions
  
  New options to replace the user's existing options.
Returns Promise<ArangoUser & ArangoResponseMetadata>

request

request<T>(options: RequestOptions & { absolutePath?: boolean }, transform?: (res: ArangojsResponse) => T): Promise<T>

internal

Performs an arbitrary HTTP request against the database.

If absolutePath is set to true, the database path will not be automatically prepended to the basePath.

Type parameters
- T = ArangojsResponse
  
  Return type to use. Defaults to the response object type.
Parameters
- options: RequestOptions & { absolutePath?: boolean }
  
  Options for this request.
- Optional transform: (res: ArangojsResponse) => T
  
  An optional function to transform the low-level response object to a more useful return value.
  - - (res: ArangojsResponse): T
    - Parameters
      - res: ArangojsResponse
      Returns T
Returns Promise<T>

route

route(path?: string, headers?: Dict<string>): Route

Returns a new Route instance for the given path (relative to the database) that can be used to perform arbitrary HTTP requests.
example
```
const db = new Database();
const myFoxxService = db.route("my-foxx-service");
const response = await myFoxxService.post("users", {
  username: "admin",
  password: "hunter2"
});
// response.body is the result of
// POST /_db/_system/my-foxx-service/users
// with JSON request body '{"username": "admin", "password": "hunter2"}'
```
Parameters
- Optional path: string
  
  The database-relative URL of the route. Defaults to the database API root.
- Optional headers: Dict<string>
  
  Default headers that should be sent with each request to the route.
Returns Route

runServiceScript

runServiceScript(mount: string, name: string, params?: any): Promise<any>

Executes a service script and retrieves its result exposed as module.exports (if any).
example
```
const db = new Database();
const result = await db.runServiceScript(
  "/my-service",
  "create-user",
  {
    username: "service_admin",
    password: "hunter2"
  }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- name: string
  
  Name of the service script to execute as defined in the service manifest.
- Optional params: any
  
  Arbitrary value that will be exposed to the script as argv[0] in the service context (e.g. module.context.argv[0]). Must be serializable to JSON.
Returns Promise<any>

runServiceTests

runServiceTests(mount: string, options?: { filter?: string; idiomatic?: false; reporter?: "default" }): Promise<ServiceTestDefaultReport>
runServiceTests(mount: string, options: { filter?: string; idiomatic?: false; reporter: "suite" }): Promise<ServiceTestSuiteReport>
runServiceTests(mount: string, options: { filter?: string; idiomatic?: false; reporter: "stream" }): Promise<ServiceTestStreamReport>
runServiceTests(mount: string, options: { filter?: string; idiomatic?: false; reporter: "tap" }): Promise<ServiceTestTapReport>
runServiceTests(mount: string, options: { filter?: string; idiomatic?: false; reporter: "xunit" }): Promise<ServiceTestXunitReport>
runServiceTests(mount: string, options: { filter?: string; idiomatic: true; reporter: "stream" }): Promise<string>
runServiceTests(mount: string, options: { filter?: string; idiomatic: true; reporter: "tap" }): Promise<string>
runServiceTests(mount: string, options: { filter?: string; idiomatic: true; reporter: "xunit" }): Promise<string>

Runs the tests of a given service and returns the results using the "default" reporter.
example
```
const db = new Database();
const testReport = await db.runServiceTests("/my-foxx");
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- Optional options: { filter?: string; idiomatic?: false; reporter?: "default" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - Optional idiomatic?: false
    
    Whether the reporter should use "idiomatic" mode. Has no effect when using the "default" or "suite" reporters.
  - Optional reporter?: "default"
Returns Promise<ServiceTestDefaultReport>
Runs the tests of a given service and returns the results using the "suite" reporter, which groups the test result by test suite.
example
```
const db = new Database();
const suiteReport = await db.runServiceTests(
  "/my-foxx",
  { reporter: "suite" }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic?: false; reporter: "suite" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - Optional idiomatic?: false
    
    Whether the reporter should use "idiomatic" mode. Has no effect when using the "default" or "suite" reporters.
  - reporter: "suite"
Returns Promise<ServiceTestSuiteReport>
Runs the tests of a given service and returns the results using the "stream" reporter, which represents the results as a sequence of tuples representing events.
example
```
const db = new Database();
const streamEvents = await db.runServiceTests(
  "/my-foxx",
  { reporter: "stream" }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic?: false; reporter: "stream" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - Optional idiomatic?: false
    
    Whether the reporter should use "idiomatic" mode. If set to true, the results will be returned as a formatted string.
  - reporter: "stream"
Returns Promise<ServiceTestStreamReport>
Runs the tests of a given service and returns the results using the "tap" reporter, which represents the results as an array of strings using the "tap" format.
example
```
const db = new Database();
const tapLines = await db.runServiceTests(
  "/my-foxx",
  { reporter: "tap" }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic?: false; reporter: "tap" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - Optional idiomatic?: false
    
    Whether the reporter should use "idiomatic" mode. If set to true, the results will be returned as a formatted string.
  - reporter: "tap"
Returns Promise<ServiceTestTapReport>
Runs the tests of a given service and returns the results using the "xunit" reporter, which represents the results as an XML document using the JSONML exchange format.
example
```
const db = new Database();
const jsonML = await db.runServiceTests(
  "/my-foxx",
  { reporter: "xunit" }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic?: false; reporter: "xunit" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - Optional idiomatic?: false
    
    Whether the reporter should use "idiomatic" mode. If set to true, the results will be returned as a formatted string.
  - reporter: "xunit"
Returns Promise<ServiceTestXunitReport>
Runs the tests of a given service and returns the results as a string using the "stream" reporter in "idiomatic" mode, which represents the results as a line-delimited JSON stream of tuples representing events.
example
```
const db = new Database();
const streamReport = await db.runServiceTests(
  "/my-foxx",
  { reporter: "stream", idiomatic: true }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic: true; reporter: "stream" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - idiomatic: true
    
    Whether the reporter should use "idiomatic" mode. If set to false, the results will be returned as an array of tuples instead of a string.
  - reporter: "stream"
Returns Promise<string>
Runs the tests of a given service and returns the results as a string using the "tap" reporter in "idiomatic" mode, which represents the results using the "tap" format.
example
```
const db = new Database();
const tapReport = await db.runServiceTests(
  "/my-foxx",
  { reporter: "tap", idiomatic: true }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic: true; reporter: "tap" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - idiomatic: true
    
    Whether the reporter should use "idiomatic" mode. If set to false, the results will be returned as an array of strings instead of a single string.
  - reporter: "tap"
Returns Promise<string>
Runs the tests of a given service and returns the results as a string using the "xunit" reporter in "idiomatic" mode, which represents the results as an XML document.
example
```
const db = new Database();
const xml = await db.runServiceTests(
  "/my-foxx",
  { reporter: "xunit", idiomatic: true }
);
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- options: { filter?: string; idiomatic: true; reporter: "xunit" }
  
  Options for running the tests.
  - Optional filter?: string
    
    If set, only tests with full names including this exact string will be executed.
  - idiomatic: true
    
    Whether the reporter should use "idiomatic" mode. If set to false, the results will be returned using the JSONML exchange format instead of a string.
  - reporter: "xunit"
Returns Promise<string>

setResponseQueueTimeSamples

setResponseQueueTimeSamples(responseQueueTimeSamples: number): void

Sets the limit for the number of values of the most recently received server-reported queue times that can be accessed using Database.queueTime.

Parameters
- responseQueueTimeSamples: number
  
  Number of values to maintain.
Returns void

setServiceDevelopmentMode

setServiceDevelopmentMode(mount: string, enabled?: boolean): Promise<ServiceInfo>

Enables or disables development mode for the given service.
example
```
const db = new Database();
await db.setServiceDevelopmentMode("/my-service", true);
// the service is now in development mode
await db.setServiceDevelopmentMode("/my-service", false);
// the service is now in production mode
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- enabled: boolean = true
  
  Whether development mode should be enabled or disabled.
Returns Promise<ServiceInfo>

setUserAccessLevel

setUserAccessLevel(username: string, __namedParameters: UserAccessLevelOptions & { grant: AccessLevel }): Promise<Record<string, AccessLevel> & ArangoResponseMetadata>

Sets the given ArangoDB user's access level for the database, or the given collection in the given database.

example

const db = new Database();
await db.setUserAccessLevel("steve", { grant: "rw" });
// The user "steve" now has read-write access to the current database.

example

const db = new Database();
await db.setUserAccessLevel("steve", {
  database: "staging",
  grant: "rw"
});
// The user "steve" now has read-write access to the "staging" database.

example

const db = new Database();
await db.setUserAccessLevel("steve", {
  collection: "pokemons",
  grant: "rw"
});
// The user "steve" now has read-write access to the "pokemons" collection
// in the current database.

example

const db = new Database();
await db.setUserAccessLevel("steve", {
  database: "staging",
  collection: "pokemons",
  grant: "rw"
});
// The user "steve" now has read-write access to the "pokemons" collection
// in the "staging" database.

example

const db = new Database();
const staging = db.database("staging");
await db.setUserAccessLevel("steve", {
  database: staging,
  grant: "rw"
});
// The user "steve" now has read-write access to the "staging" database.

example

const db = new Database();
const staging = db.database("staging");
await db.setUserAccessLevel("steve", {
  collection: staging.collection("pokemons"),
  grant: "rw"
});
// The user "steve" now has read-write access to the "pokemons" collection
// in database "staging".

Parameters

username: string

Name of the ArangoDB user to set the access level for.
__namedParameters: UserAccessLevelOptions & { grant: AccessLevel }

Returns Promise<Record<string, AccessLevel> & ArangoResponseMetadata>

transaction

transaction(transactionId: string): Transaction

Returns a Transaction instance for an existing streaming transaction with the given id.

See also Database.beginTransaction.
example
```
const trx1 = await db.beginTransaction(collections);
const id = trx1.id;
// later
const trx2 = db.transaction(id);
await trx2.commit();
```
Parameters
- transactionId: string
Returns Transaction

transactions

transactions(): Promise<Transaction[]>

Fetches all active transactions from the database and returns an array of Transaction instances for those transactions.

See also Database.listTransactions.
example
```
const db = new Database();
const transactions = await db.transactions();
// transactions is an array of transactions
```
Returns Promise<Transaction[]>

uninstallService

uninstallService(mount: string, options?: UninstallServiceOptions): Promise<void>

Completely removes a service from the database.
example
```
const db = new Database();
await db.uninstallService("/my-foxx");
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- Optional options: UninstallServiceOptions
  
  Options for uninstalling the service.
Returns Promise<void>

updateServiceConfiguration

updateServiceConfiguration(mount: string, cfg: Dict<any>, minimal?: false): Promise<Dict<ServiceConfiguration & { warning?: string }>>
updateServiceConfiguration(mount: string, cfg: Dict<any>, minimal: true): Promise<{ values: Dict<any>; warnings: Dict<undefined | string> }>

Updates the configuration of the given service while maintaining any existing values for options not specified.

See also Database.replaceServiceConfiguration and Database.getServiceConfiguration.
example
```
const db = new Database();
const config = { currency: "USD", locale: "en-US" };
const info = await db.updateServiceConfiguration("/my-service", config);
for (const [key, option] of Object.entries(info)) {
  console.log(`${option.title} (${key}): ${option.value}`);
  if (option.warning) console.warn(`Warning: ${option.warning}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- cfg: Dict<any>
  
  An object mapping configuration option names to values.
- Optional minimal: false
  
  If set to true, the result will only include each configuration option's current value and warning (if any). Otherwise it will include the full definition for each option.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full configuration definitions.
Returns Promise<Dict<ServiceConfiguration & { warning?: string }>>
Updates the configuration of the given service while maintaining any existing values for options not specified.

See also Database.replaceServiceConfiguration and Database.getServiceConfiguration.
example
```
const db = new Database();
const config = { currency: "USD", locale: "en-US" };
const info = await db.updateServiceConfiguration("/my-service", config);
for (const [key, value] of Object.entries(info.values)) {
  console.log(`${key}: ${value}`);
  if (info.warnings[key]) console.warn(`Warning: ${info.warnings[key]}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- cfg: Dict<any>
  
  An object mapping configuration option names to values.
- minimal: true
  
  If set to true, the result will only include each configuration option's current value and warning (if any). Otherwise it will include the full definition for each option.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full configuration definitions.
Returns Promise<{ values: Dict<any>; warnings: Dict<undefined | string> }>

updateServiceDependencies

updateServiceDependencies(mount: string, deps: Dict<string>, minimal?: false): Promise<Dict<(SingleServiceDependency & { warning?: string }) | (MultiServiceDependency & { warning?: string })>>
updateServiceDependencies(mount: string, deps: Dict<string>, minimal: true): Promise<{ values: Dict<string>; warnings: Dict<undefined | string> }>

Updates the dependencies of the given service while maintaining any existing mount points for dependencies not specified.

See also Database.replaceServiceDependencies and Database.getServiceDependencies.
example
```
const db = new Database();
const deps = { mailer: "/mailer-api", auth: "/remote-auth" };
const info = await db.updateServiceDependencies("/my-service", deps);
for (const [key, dep] of Object.entries(info)) {
  console.log(`${dep.title} (${key}): ${dep.current}`);
  if (dep.warning) console.warn(`Warning: ${dep.warning}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- deps: Dict<string>
- Optional minimal: false
  
  If set to true, the result will only include each dependency's current mount point. Otherwise it will include the full definition for each dependency.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full dependency definitions.
Returns Promise<Dict<(SingleServiceDependency & { warning?: string }) | (MultiServiceDependency & { warning?: string })>>
Updates the dependencies of the given service while maintaining any existing mount points for dependencies not specified.

See also Database.replaceServiceDependencies and Database.getServiceDependencies.
example
```
const db = new Database();
const deps = { mailer: "/mailer-api", auth: "/remote-auth" };
const info = await db.updateServiceDependencies(
  "/my-service",
  deps,
  true
);
for (const [key, value] of Object.entries(info)) {
  console.log(`${key}: ${value}`);
  if (info.warnings[key]) console.warn(`Warning: ${info.warnings[key]}`);
}
```
Parameters
- mount: string
  
  The service's mount point, relative to the database.
- deps: Dict<string>
- minimal: true
  
  If set to true, the result will only include each dependency's current mount point. Otherwise it will include the full definition for each dependency.
  
  Note: When using ArangoDB 3.2.8 or older, setting the minimal option to true avoids triggering a second request to fetch the full dependency definitions.
Returns Promise<{ values: Dict<string>; warnings: Dict<undefined | string> }>

updateUser

updateUser(username: string, passwd: string): Promise<ArangoUser & ArangoResponseMetadata>
updateUser(username: string, options: Partial<UserOptions>): Promise<ArangoUser & ArangoResponseMetadata>

Sets the password of a given ArangoDB user to the new value.
example
```
const db = new Database();
const user = await db.updateUser("steve", "hunter2");
// The user "steve" has received a new password
```
Parameters
- username: string
  
  Name of the ArangoDB user to change the password for.
- passwd: string
  
  New password for the ArangoDB user.
Returns Promise<ArangoUser & ArangoResponseMetadata>
Updates the ArangoDB user with the new options.
example
```
const db = new Database();
const user = await db.updateUser("steve", { active: false });
// The user "steve" has been set to inactive
```
Parameters
- username: string
  
  Name of the ArangoDB user to modify.
- options: Partial<UserOptions>
  
  Options of the ArangoDB user to modify.
Returns Promise<ArangoUser & ArangoResponseMetadata>

upgradeService

upgradeService(mount: string, source: string | Buffer | Blob | Readable, options?: UpgradeServiceOptions): Promise<ServiceInfo>

Replaces an existing service with a new service while retaining the old service's configuration and dependencies.

example

const db = new Database();
// Using a node.js file stream as source
const source = fs.createReadStream("./my-foxx-service.zip");
const info = await db.upgradeService("/hello", source);

example

const db = new Database();
// Using a node.js Buffer as source
const source = fs.readFileSync("./my-foxx-service.zip");
const info = await db.upgradeService("/hello", source);

example

const db = new Database();
// Using a File (Blob) from a browser file input
const element = document.getElementById("my-file-input");
const source = element.files[0];
const info = await db.upgradeService("/hello", source);

Parameters

mount: string

The service's mount point, relative to the database.
source: string | Buffer | Blob | Readable

The service bundle to install.
options: UpgradeServiceOptions = {}

Options for upgrading the service.

Returns Promise<ServiceInfo>

useBasicAuth

useBasicAuth(username?: string, password?: string): Database

Updates the Database instance's authorization header to use Basic authentication with the given username and password, then returns itself.
example
```
const db = new Database();
db.useDatabase("test");
db.useBasicAuth("admin", "hunter2");
// The database instance now uses the database "test"
// with the username "admin" and password "hunter2".
```
Parameters
- username: string = "root"
  
  The username to authenticate with.
- password: string = ""
  
  The password to authenticate with.
Returns Database

useBearerAuth

useBearerAuth(token: string): Database

Updates the Database instance's authorization header to use Bearer authentication with the given authentication token, then returns itself.
example
```
const db = new Database();
db.useBearerAuth("keyboardcat");
// The database instance now uses Bearer authentication.
```
Parameters
- token: string
  
  The token to authenticate with.
Returns Database

useDatabase

useDatabase(databaseName: string): Database

Updates the Database instance and its connection string to use the given databaseName, then returns itself.

Note: This also affects all collections, cursors and other arangojs objects originating from this database object, which may cause unexpected results.
deprecated

Use Database.database instead.

example
```
const systemDb = new Database();
// systemDb.useDatabase("my_database"); // deprecated
const myDb = systemDb.database("my_database");
```
Parameters
- databaseName: string
  
  Name of the database to use.
Returns Database

userDatabases

userDatabases(): Promise<Database[]>

Fetches all databases accessible to the active user from the server and returns an array of Database instances for those databases.

See also Database.listUserDatabases and Database.databases.
example
```
const db = new Database();
const names = await db.userDatabases();
// databases is an array of databases
```
Returns Promise<Database[]>

version

version(details?: boolean): Promise<VersionInfo>

Fetches version information from the ArangoDB server.

example

const db = new Database();
const version = await db.version();
// the version object contains the ArangoDB version information.
// license: "community" or "enterprise"
// version: ArangoDB version number
// server: description of the server

Parameters

Optional details: boolean

If set to true, additional information about the ArangoDB server will be available as the details property.

Returns Promise<VersionInfo>

view

view(viewName: string): ArangoSearchView

Returns an ArangoSearchView instance for the given viewName.
example
```
const db = new Database();
const view = db.view("potatoes");
```
Parameters
- viewName: string
  
  Name of the ArangoSearch View.
Returns ArangoSearchView

views

views(): Promise<ArangoSearchView[]>

Fetches all Views from the database and returns an array of ArangoSearchView instances for the Views.

See also Database.listViews.
example
```
const db = new Database();
const views = await db.views();
// views is an array of ArangoSearch View instances
```
Returns Promise<ArangoSearchView[]>

waitForPropagation

waitForPropagation(request: RequestOptions, timeout?: number): Promise<void>

Performs a request against every known coordinator and returns when the request has succeeded against every coordinator or the timeout is reached.

Note: This method is primarily intended to make database setup easier in cluster scenarios and requires all coordinators to be known to arangojs before the method is invoked. The method is not useful in single-server or leader-follower replication scenarios.
example
```
const db = new Database({ loadBalancingStrategy: "ROUND_ROBIN" });
await db.acquireHostList();
const analyzer = db.analyzer("my-analyzer");
await analyzer.create();
await db.waitForPropagation(
  { path: `/_api/analyzer/${encodeURIComponent(analyzer.name)}` },
  30000
);
// Analyzer has been propagated to all coordinators and can safely be used
```
Parameters
- request: RequestOptions
  
  Request to perform against each known coordinator.
- Optional timeout: number
  
  Maximum number of milliseconds to wait for propagation.
Returns Promise<void>

Hierarchy

Index

Constructors

Accessors

Methods

Constructors

constructor

Parameters

Optional config: Config

Returns Database

Parameters

url: string | string[]

Optional name: string

Returns Database

Accessors

isArangoDatabase

Returns true

name

Returns string

queueTime

Returns QueueTimeMetrics

Methods

acquireHostList

Returns Promise<void>

analyzer

Parameters

analyzerName: string

Returns Analyzer

analyzers

Returns Promise<Analyzer[]>

beginTransaction

Parameters

collections: TransactionCollections

Optional options: TransactionOptions

Returns Promise<Transaction>

Parameters

collections: (string | ArangoCollection)[]

Optional options: TransactionOptions

Returns Promise<Transaction>

Parameters

collection: string | ArangoCollection

Optional options: TransactionOptions

Returns Promise<Transaction>

clearSlowQueries

Returns Promise<void>

clearUserAccessLevel

Parameters

username: string

__namedParameters: UserAccessLevelOptions

Returns Promise<Record<string, AccessLevel> & ArangoResponseMetadata>

close

Returns void

collection

Type parameters

T: Record<string, any> = any

Parameters

collectionName: string

Returns DocumentCollection<T> & EdgeCollection<T>

collections

Parameters

excludeSystem: boolean = true

Returns Promise<(DocumentCollection<any> & EdgeCollection<any>)[]>

commitLocalServiceState

Parameters

replace: boolean = false

Returns Promise<void>

createAnalyzer

Parameters

analyzerName: string

options: CreateAnalyzerOptions

Returns Promise<Analyzer>

createCollection

Type parameters

T: Record<string, any> = any

Parameters

collectionName: string

Optional options: CreateCollectionOptions & { type?: DOCUMENT_COLLECTION }

Returns Promise<DocumentCollection<T>>

Type parameters

T: Record<string, any> = any