Class BulkWriter (3.20.0)

public final class BulkWriter implements AutoCloseable

A Firestore BulkWriter that can be used to perform a large number of writes in parallel.

Inheritance

Object > BulkWriter

Implements

AutoCloseable

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Fields

MAX_BATCH_SIZE

public static final int MAX_BATCH_SIZE

The maximum number of writes that can be in a single batch.

Field Value
Type	Description
`int`

MAX_RETRY_ATTEMPTS

public static final int MAX_RETRY_ATTEMPTS

The maximum number of retries that will be attempted with backoff before stopping all retry attempts.

Field Value
Type	Description
`int`

RETRY_MAX_BATCH_SIZE

public static final int RETRY_MAX_BATCH_SIZE

The maximum number of writes that can be in a batch containing retries.

Field Value
Type	Description
`int`

Methods

addWriteErrorListener(BulkWriter.WriteErrorCallback onError)

public void addWriteErrorListener(BulkWriter.WriteErrorCallback onError)

Attaches an error handler listener that is run every time a BulkWriter operation fails.

BulkWriter has a default error handler that retries UNAVAILABLE and ABORTED errors up to a maximum of 10 failed attempts. When an error handler is specified, the default error handler will be overwritten.

For example, see the sample code:


 BulkWriter bulkWriter = firestore.bulkWriter();
 bulkWriter.addWriteErrorListener(
       (BulkWriterException error) -> {
         if (error.getStatus() == Status.UNAVAILABLE
           && error.getFailedAttempts() < max_retry_attempts)="" {="" return="" true;="" }="" else="" {="" system.out.println("failed="" write="" at="" document:="" "="" +="" error.getdocumentreference());="" return="" false;="" }="" }="" );="">

Parameter
Name	Description
`onError`	`BulkWriter.WriteErrorCallback` A callback to be called every time a BulkWriter operation fails. Returning `true` will retry the operation. Returning `false` will stop the retry loop.

addWriteErrorListener(Executor executor, BulkWriter.WriteErrorCallback onError)

public void addWriteErrorListener(Executor executor, BulkWriter.WriteErrorCallback onError)

Attaches an error handler listener that is run every time a BulkWriter operation fails.

The executor cannot be changed once writes have been enqueued onto the BulkWriter.

For example, see the sample code:


 BulkWriter bulkWriter = firestore.bulkWriter();
 bulkWriter.addWriteErrorListener(
       (BulkWriterException error) -> {
         if (error.getStatus() == Status.UNAVAILABLE
           && error.getFailedAttempts() < max_retry_attempts)="" {="" return="" true;="" }="" else="" {="" system.out.println("failed="" write="" at="" document:="" "="" +="" error.getdocumentreference());="" return="" false;="" }="" }="" );="">

Parameters
Name	Description
`executor`	`Executor` The executor to run the provided callback on.
`onError`	`BulkWriter.WriteErrorCallback` A callback to be called every time a BulkWriter operation fails. Returning `true` will retry the operation. Returning `false` will stop the retry loop.

addWriteResultListener(BulkWriter.WriteResultCallback writeResultCallback)

public void addWriteResultListener(BulkWriter.WriteResultCallback writeResultCallback)

Attaches a listener that is run every time a BulkWriter operation successfully completes. The listener will be run before close() completes.

For example, see the sample code: BulkWriter bulkWriter = firestore.bulkWriter(); bulkWriter.addWriteResultListener( (DocumentReference documentReference, WriteResult result) -> { System.out.println( "Successfully executed write on document: "


documentReference
" at: "
result.getUpdateTime());
}
);

Parameter
Name	Description
`writeResultCallback`	`BulkWriter.WriteResultCallback` A callback to be called every time a BulkWriter operation successfully completes.

addWriteResultListener(Executor executor, BulkWriter.WriteResultCallback writeResultCallback)

public void addWriteResultListener(Executor executor, BulkWriter.WriteResultCallback writeResultCallback)

Attaches a listener that is run every time a BulkWriter operation successfully completes.

The executor cannot be changed once writes have been enqueued onto the BulkWriter.

For example, see the sample code:


 BulkWriter bulkWriter = firestore.bulkWriter();
 bulkWriter.addWriteResultListener(
       (DocumentReference documentReference, WriteResult result) -> {
           System.out.println(
               "Successfully executed write on document: "
                   + documentReference
                   + " at: "
                   + result.getUpdateTime());
         }
       );

Parameters
Name	Description
`executor`	`Executor` The executor to run the provided callback on.
`writeResultCallback`	`BulkWriter.WriteResultCallback` A callback to be called every time a BulkWriter operation successfully completes.

close()

public void close()

Commits all enqueued writes and marks the BulkWriter instance as closed.

After calling close(), calling any method will return an error. Any retries scheduled with addWriteErrorListener() will be run before close() completes.

This method completes when there are no more pending writes. Calling this method will send all requests.

Exceptions
Type	Description
`InterruptedException`
`ExecutionException`

create(DocumentReference documentReference, Object pojo)

public ApiFuture<WriteResult> create(DocumentReference documentReference, Object pojo)

Create a document with the provided data. This single operation will fail if a document exists at its location.

Parameters
Name	Description
`documentReference`	`DocumentReference` A reference to the document to be created.
`pojo`	`Object` The POJO that will be used to populate the document contents.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing the result of the write. Contains a BulkWriterException if the write fails.

create(DocumentReference documentReference, Map<String,Object> fields)

public ApiFuture<WriteResult> create(DocumentReference documentReference, Map<String,Object> fields)

Create a document with the provided data. This single operation will fail if a document exists at its location.

Parameters
Name	Description
`documentReference`	`DocumentReference` A reference to the document to be created.
`fields`	`Map<String,Object>` A map of the fields and values for the document.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing the result of the write. Contains a BulkWriterException if the write fails.

delete(DocumentReference documentReference)

public ApiFuture<WriteResult> delete(DocumentReference documentReference)

Delete a document from the database.

Parameter
Name	Description
`documentReference`	`DocumentReference` The DocumentReference to delete.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing a sentinel value (Timestamp(0)) for the delete operation. Contains a BulkWriterException if the delete fails.

delete(DocumentReference documentReference, Precondition precondition)

public ApiFuture<WriteResult> delete(DocumentReference documentReference, Precondition precondition)

Delete a document from the database.

Parameters
Name	Description
`documentReference`	`DocumentReference` The DocumentReference to delete.
`precondition`	`Precondition` Precondition to enforce for this delete.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing a sentinel value (Timestamp(0)) for the delete operation. Contains a BulkWriterException if the delete fails.

flush()

public ApiFuture<Void> flush()

Commits all writes that have been enqueued up to this point in parallel.

Returns an ApiFuture that completes when all currently queued operations have been committed. The ApiFuture will never return an error since the results for each individual operation are conveyed via their individual ApiFutures.

The ApiFuture completes immediately if there are no pending writes. Otherwise, the ApiFuture waits for all previously issued writes, but it does not wait for writes that were added after the method is called. If you want to wait for additional writes, call flush() again.

Returns
Type	Description
`ApiFuture<Void>`	An ApiFuture that completes when all enqueued writes up to this point have been committed.

set(DocumentReference documentReference, Object pojo)

public ApiFuture<WriteResult> set(DocumentReference documentReference, Object pojo)

Write to the document referred to by the provided DocumentReference. If the document does not exist yet, it will be created.

Parameters
Name	Description
`documentReference`	`DocumentReference` A reference to the document to be set.
`pojo`	`Object` The POJO that will be used to populate the document contents.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing the result of the write. Contains a BulkWriterException if the write fails.

set(DocumentReference documentReference, Object pojo, SetOptions options)

public ApiFuture<WriteResult> set(DocumentReference documentReference, Object pojo, SetOptions options)

Write to the document referred to by the provided DocumentReference. If the document does not exist yet, it will be created. If you pass a SetOptions, the provided data can be merged into an existing document.

Parameters
Name	Description
`documentReference`	`DocumentReference` A reference to the document to be set.
`pojo`	`Object` The POJO that will be used to populate the document contents.
`options`	`SetOptions` An object to configure the set behavior.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing the result of the write. Contains a BulkWriterException if the write fails.

set(DocumentReference documentReference, Map<String,Object> fields)

public ApiFuture<WriteResult> set(DocumentReference documentReference, Map<String,Object> fields)

Write to the document referred to by the provided DocumentReference. If the document does not exist yet, it will be created.

Parameters
Name	Description
`documentReference`	`DocumentReference` A reference to the document to be set.
`fields`	`Map<String,Object>` A map of the fields and values for the document.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing the result of the write. Contains a BulkWriterException if the write fails.

set(DocumentReference documentReference, Map<String,Object> fields, SetOptions options)

public ApiFuture<WriteResult> set(DocumentReference documentReference, Map<String,Object> fields, SetOptions options)

Parameters
Name	Description
`documentReference`	`DocumentReference` A reference to the document to be set.
`fields`	`Map<String,Object>` A map of the fields and values for the document.
`options`	`SetOptions` An object to configure the set behavior.

Returns
Type	Description
`ApiFuture<WriteResult>`	An ApiFuture containing the result of the write. Contains a BulkWriterException if the write fails.