PipelineResult class

A PipelineResult contains data read from a Firestore Pipeline. The data can be extracted with the PipelineResult.data() or PipelineResult.get() methods.

If the PipelineResult represents a non-document result, ref will return a undefined value.

Signature:

export declare class PipelineResult<AppModelType = DocumentData> 

Properties

Methods

PipelineResult.createTime

The time the document was created. Undefined if this result is not a document.

Signature:

get createTime(): Timestamp | undefined;

PipelineResult.id

The ID of the document for which this PipelineResult contains data, if it is a document; otherwise undefined.

Signature:

get id(): string | undefined;

PipelineResult.ref

The reference of the document, if it is a document; otherwise undefined.

Signature:

get ref(): DocumentReference | undefined;

PipelineResult.updateTime

The time the document was last updated (at the time the snapshot was generated). Undefined if this result is not a document.

Signature:

get updateTime(): Timestamp | undefined;

PipelineResult.data()

Retrieves all fields in the result as an object.

Signature:

data(): AppModelType;

Returns:

AppModelType

An object containing all fields in the document or 'undefined' if the document doesn't exist.

Example

let p = firestore.pipeline().collection('col');

p.execute().then(results => {
  let data = results[0].data();
  console.log(`Retrieved data: ${JSON.stringify(data)}`);
});

PipelineResult.get()

Retrieves the field specified by field.

Signature:

get(fieldPath: string | FieldPath | Field): any;

Parameters

Returns:

any

The data at the specified field location or undefined if no such field exists.

Example

let p = firestore.pipeline().collection('col');

p.execute().then(results => {
  let field = results[0].get('a.b');
  console.log(`Retrieved field value: ${field}`);
});