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खास जानकारी मार्गदर्शिका संदर्भ नमूने Libraries

REST Resource: projects.databases.indexes

Resource: Index

An index definition.

JSON representation 
{
  "name": string,
  "collectionId": string,
  "fields": [
    {
      object(IndexField)
    }
  ],
  "state": enum(State)
}
Fields
name

string

The resource name of the index. Output only.

collectionId

string

The collection ID to which this index applies. Required.

fields[]

object(IndexField)

The fields to index.

state

enum(State)

The state of the index. Output only.

IndexField

A field of an index.

JSON representation 
{
  "fieldPath": string,
  "mode": enum(Mode)
}
Fields
fieldPath

string

The path of the field. Must match the field path specification described by [google.firestore.v1beta1.Document.fields][fields]. Special field path __name__ may be used by itself or at the end of a path. __type__ may be used only at the end of path.

mode

enum(Mode)

The field's mode.

Mode

The mode determines how a field is indexed.

Enums
MODE_UNSPECIFIED The mode is unspecified.
ASCENDING The field's values are indexed so as to support sequencing in ascending order and also query by <, >, <=, >=, and =.
DESCENDING The field's values are indexed so as to support sequencing in descending order and also query by <, >, <=, >=, and =.
ARRAY_CONTAINS The field's array values are indexed so as to support membership using ARRAY_CONTAINS queries.

State

The state of an index. During index creation, an index will be in the CREATING state. If the index is created successfully, it will transition to the READY state. If the index is not able to be created, it will transition to the ERROR state.

Enums
STATE_UNSPECIFIED The state is unspecified.
CREATING The index is being created. There is an active long-running operation for the index. The index is updated when writing a document. Some index data may exist.
READY The index is ready to be used. The index is updated when writing a document. The index is fully populated from all stored documents it applies to.
ERROR The index was being created, but something went wrong. There is no active long-running operation for the index, and the most recently finished long-running operation failed. The index is not updated when writing a document. Some index data may exist.

Methods

create

 Creates the specified index.

delete

 Deletes an index.

get

 Gets an index.

list

 Lists the indexes that match the specified filters.