Class StartBatchTransactionAction (6.74.1)

public final class StartBatchTransactionAction extends GeneratedMessageV3 implements StartBatchTransactionActionOrBuilder

Starts a batch read-only transaction in executor. Successful outcomes of this action will contain batch_txn_id--the identificator that can be used to start the same transaction in other Executors to parallelize partition processing.

Example of a batch read flow:

Start batch transaction with a timestamp (StartBatchTransactionAction)
Generate database partitions for a read or query (GenerateDbPartitionsForReadAction/GenerateDbPartitionsForQueryAction)
Call ExecutePartitionAction for some or all partitions, process rows
Clean up the transaction (CloseBatchTransactionAction).

More sophisticated example, with parallel processing:
Start batch transaction with a timestamp (StartBatchTransactionAction), note the returned BatchTransactionId
Generate database partitions for a read or query (GenerateDbPartitionsForReadAction/GenerateDbPartitionsForQueryAction)
Distribute the partitions over a pool of workers, along with the transaction ID.

In each worker: 4-1. StartBatchTransactionAction with the given transaction ID 4-2. ExecutePartitionAction for each partition it got, process read results 4-3. Close (not cleanup) the transaction (CloseBatchTransactionAction).

When all workers are done:
Cleanup the transaction (CloseBatchTransactionAction). This can be done either by the last worker to finish the job, or by the main Executor that initialized this transaction in the first place. It is also possible to clean it up with a brand new Executor -- just execute StartBatchTransactionAction with the ID, then clean it up right away.

Cleaning up is optional, but recommended.

Protobuf type google.spanner.executor.v1.StartBatchTransactionAction

Inheritance

Object > AbstractMessageLite<MessageType,BuilderType> > AbstractMessage > GeneratedMessageV3 > StartBatchTransactionAction

Implements

StartBatchTransactionActionOrBuilder

Inherited Members

AbstractMessage.equals(Object)

AbstractMessage.findInitializationErrors()

AbstractMessage.getInitializationErrorString()

AbstractMessage.hashBoolean(boolean)

AbstractMessage.hashCode()

AbstractMessage.hashEnum(Internal.EnumLite)

AbstractMessage.hashEnumList(List<? extends Internal.EnumLite>)

AbstractMessage.hashFields(int,Map<Descriptors.FieldDescriptor,Object>)

AbstractMessage.hashLong(long)

AbstractMessage.toString()

AbstractMessageLite.<T>addAll(Iterable<T>,Collection<? super T>)

AbstractMessageLite.<T>addAll(Iterable<T>,List<? super T>)

AbstractMessageLite.checkByteStringIsUtf8(ByteString)

AbstractMessageLite.toByteArray()

AbstractMessageLite.toByteString()

AbstractMessageLite.writeDelimitedTo(OutputStream)

AbstractMessageLite.writeTo(OutputStream)

com.google.protobuf.GeneratedMessageV3.<ListT>makeMutableCopy(ListT)

com.google.protobuf.GeneratedMessageV3.<ListT>makeMutableCopy(ListT,int)

GeneratedMessageV3.<M>parseDelimitedWithIOException(Parser<M>,InputStream)

GeneratedMessageV3.<M>parseDelimitedWithIOException(Parser<M>,InputStream,ExtensionRegistryLite)

GeneratedMessageV3.<M>parseWithIOException(Parser<M>,CodedInputStream)

GeneratedMessageV3.<M>parseWithIOException(Parser<M>,CodedInputStream,ExtensionRegistryLite)

GeneratedMessageV3.<M>parseWithIOException(Parser<M>,InputStream)

GeneratedMessageV3.<M>parseWithIOException(Parser<M>,InputStream,ExtensionRegistryLite)

com.google.protobuf.GeneratedMessageV3.<T>emptyList(java.lang.Class<T>)

GeneratedMessageV3.<V>serializeBooleanMapTo(CodedOutputStream,MapField<Boolean,V>,MapEntry<Boolean,V>,int)

GeneratedMessageV3.<V>serializeIntegerMapTo(CodedOutputStream,MapField<Integer,V>,MapEntry<Integer,V>,int)

GeneratedMessageV3.<V>serializeLongMapTo(CodedOutputStream,MapField<Long,V>,MapEntry<Long,V>,int)

GeneratedMessageV3.<V>serializeStringMapTo(CodedOutputStream,MapField<String,V>,MapEntry<String,V>,int)

GeneratedMessageV3.canUseUnsafe()

GeneratedMessageV3.computeStringSize(int,Object)

GeneratedMessageV3.computeStringSizeNoTag(Object)

GeneratedMessageV3.emptyBooleanList()

GeneratedMessageV3.emptyDoubleList()

GeneratedMessageV3.emptyFloatList()

GeneratedMessageV3.emptyIntList()

GeneratedMessageV3.emptyLongList()

GeneratedMessageV3.getAllFields()

GeneratedMessageV3.getDescriptorForType()

GeneratedMessageV3.getField(Descriptors.FieldDescriptor)

GeneratedMessageV3.getOneofFieldDescriptor(Descriptors.OneofDescriptor)

GeneratedMessageV3.getParserForType()

GeneratedMessageV3.getRepeatedField(Descriptors.FieldDescriptor,int)

GeneratedMessageV3.getRepeatedFieldCount(Descriptors.FieldDescriptor)

GeneratedMessageV3.getSerializedSize()

GeneratedMessageV3.getUnknownFields()

GeneratedMessageV3.hasField(Descriptors.FieldDescriptor)

GeneratedMessageV3.hasOneof(Descriptors.OneofDescriptor)

GeneratedMessageV3.internalGetFieldAccessorTable()

GeneratedMessageV3.internalGetMapField(int)

com.google.protobuf.GeneratedMessageV3.internalGetMapFieldReflection(int)

GeneratedMessageV3.isInitialized()

GeneratedMessageV3.isStringEmpty(Object)

GeneratedMessageV3.makeExtensionsImmutable()

GeneratedMessageV3.mergeFromAndMakeImmutableInternal(CodedInputStream,ExtensionRegistryLite)

GeneratedMessageV3.mutableCopy(Internal.BooleanList)

GeneratedMessageV3.mutableCopy(Internal.DoubleList)

GeneratedMessageV3.mutableCopy(Internal.FloatList)

GeneratedMessageV3.mutableCopy(Internal.IntList)

GeneratedMessageV3.mutableCopy(Internal.LongList)

GeneratedMessageV3.newBooleanList()

GeneratedMessageV3.newBuilderForType(AbstractMessage.BuilderParent)

GeneratedMessageV3.newBuilderForType(GeneratedMessageV3.BuilderParent)

GeneratedMessageV3.newDoubleList()

GeneratedMessageV3.newFloatList()

GeneratedMessageV3.newInstance(GeneratedMessageV3.UnusedPrivateParameter)

GeneratedMessageV3.newIntList()

GeneratedMessageV3.newLongList()

GeneratedMessageV3.parseUnknownField(CodedInputStream,UnknownFieldSet.Builder,ExtensionRegistryLite,int)

GeneratedMessageV3.parseUnknownFieldProto3(CodedInputStream,UnknownFieldSet.Builder,ExtensionRegistryLite,int)

GeneratedMessageV3.writeReplace()

GeneratedMessageV3.writeString(CodedOutputStream,int,Object)

GeneratedMessageV3.writeStringNoTag(CodedOutputStream,Object)

GeneratedMessageV3.writeTo(CodedOutputStream)

Object.clone()

Object.finalize()

Object.getClass()

Object.notify()

Object.notifyAll()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Fields

BATCH_TXN_TIME_FIELD_NUMBER

public static final int BATCH_TXN_TIME_FIELD_NUMBER

Field Value
Type	Description
`int`

CLOUD_DATABASE_ROLE_FIELD_NUMBER

public static final int CLOUD_DATABASE_ROLE_FIELD_NUMBER

Field Value
Type	Description
`int`

TID_FIELD_NUMBER

public static final int TID_FIELD_NUMBER

Field Value
Type	Description
`int`

Static Methods

getDefaultInstance()

public static StartBatchTransactionAction getDefaultInstance()

Returns
Type	Description
`StartBatchTransactionAction`

getDescriptor()

public static final Descriptors.Descriptor getDescriptor()

Returns
Type	Description
`Descriptor`

newBuilder()

public static StartBatchTransactionAction.Builder newBuilder()

Returns
Type	Description
`StartBatchTransactionAction.Builder`

newBuilder(StartBatchTransactionAction prototype)

public static StartBatchTransactionAction.Builder newBuilder(StartBatchTransactionAction prototype)

Parameter
Name	Description
`prototype`	`StartBatchTransactionAction`

Returns
Type	Description
`StartBatchTransactionAction.Builder`

parseDelimitedFrom(InputStream input)

public static StartBatchTransactionAction parseDelimitedFrom(InputStream input)

Parameter
Name	Description
`input`	`InputStream`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`IOException`

parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

public static StartBatchTransactionAction parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
`input`	`InputStream`
`extensionRegistry`	`ExtensionRegistryLite`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`IOException`

parseFrom(byte[] data)

public static StartBatchTransactionAction parseFrom(byte[] data)

Parameter
Name	Description
`data`	`byte[]`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`InvalidProtocolBufferException`

parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)

public static StartBatchTransactionAction parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
`data`	`byte[]`
`extensionRegistry`	`ExtensionRegistryLite`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`InvalidProtocolBufferException`

parseFrom(ByteString data)

public static StartBatchTransactionAction parseFrom(ByteString data)

Parameter
Name	Description
`data`	`ByteString`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`InvalidProtocolBufferException`

parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

public static StartBatchTransactionAction parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
`data`	`ByteString`
`extensionRegistry`	`ExtensionRegistryLite`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`InvalidProtocolBufferException`

parseFrom(CodedInputStream input)

public static StartBatchTransactionAction parseFrom(CodedInputStream input)

Parameter
Name	Description
`input`	`CodedInputStream`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`IOException`

parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

public static StartBatchTransactionAction parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
`input`	`CodedInputStream`
`extensionRegistry`	`ExtensionRegistryLite`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`IOException`

parseFrom(InputStream input)

public static StartBatchTransactionAction parseFrom(InputStream input)

Parameter
Name	Description
`input`	`InputStream`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`IOException`

parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

public static StartBatchTransactionAction parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
`input`	`InputStream`
`extensionRegistry`	`ExtensionRegistryLite`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`IOException`

parseFrom(ByteBuffer data)

public static StartBatchTransactionAction parseFrom(ByteBuffer data)

Parameter
Name	Description
`data`	`ByteBuffer`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`InvalidProtocolBufferException`

parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

public static StartBatchTransactionAction parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
`data`	`ByteBuffer`
`extensionRegistry`	`ExtensionRegistryLite`

Returns
Type	Description
`StartBatchTransactionAction`

Exceptions
Type	Description
`InvalidProtocolBufferException`

parser()

public static Parser<StartBatchTransactionAction> parser()

Returns
Type	Description
`Parser<StartBatchTransactionAction>`

Methods

equals(Object obj)

public boolean equals(Object obj)

Parameter
Name	Description
`obj`	`Object`

Returns
Type	Description
`boolean`

Overrides

AbstractMessage.equals(Object other)

getBatchTxnTime()

public Timestamp getBatchTxnTime()

The exact timestamp to start the batch transaction.

.google.protobuf.Timestamp batch_txn_time = 1;

Returns
Type	Description
`Timestamp`	The batchTxnTime.

getBatchTxnTimeOrBuilder()

public TimestampOrBuilder getBatchTxnTimeOrBuilder()

The exact timestamp to start the batch transaction.

.google.protobuf.Timestamp batch_txn_time = 1;

Returns
Type	Description
`TimestampOrBuilder`

getCloudDatabaseRole()

public String getCloudDatabaseRole()

Database role to assume while performing this action. Setting the database_role will enforce additional role-based access checks on this action.

string cloud_database_role = 3;

Returns
Type	Description
`String`	The cloudDatabaseRole.

getCloudDatabaseRoleBytes()

public ByteString getCloudDatabaseRoleBytes()

Database role to assume while performing this action. Setting the database_role will enforce additional role-based access checks on this action.

string cloud_database_role = 3;

Returns
Type	Description
`ByteString`	The bytes for cloudDatabaseRole.

getDefaultInstanceForType()

public StartBatchTransactionAction getDefaultInstanceForType()

Returns
Type	Description
`StartBatchTransactionAction`

getParamCase()

public StartBatchTransactionAction.ParamCase getParamCase()

Returns
Type	Description
`StartBatchTransactionAction.ParamCase`

getParserForType()

public Parser<StartBatchTransactionAction> getParserForType()

Returns
Type	Description
`Parser<StartBatchTransactionAction>`

Overrides

GeneratedMessageV3.getParserForType()

getSerializedSize()

public int getSerializedSize()

Returns
Type	Description
`int`

Overrides

GeneratedMessageV3.getSerializedSize()

getTid()

public ByteString getTid()

ID of a batch read-only transaction. It can be used to start the same batch transaction on multiple executors and parallelize partition processing.

bytes tid = 2;

Returns
Type	Description
`ByteString`	The tid.

hasBatchTxnTime()

public boolean hasBatchTxnTime()

The exact timestamp to start the batch transaction.

.google.protobuf.Timestamp batch_txn_time = 1;

Returns
Type	Description
`boolean`	Whether the batchTxnTime field is set.

hasTid()

public boolean hasTid()

ID of a batch read-only transaction. It can be used to start the same batch transaction on multiple executors and parallelize partition processing.

bytes tid = 2;

Returns
Type	Description
`boolean`	Whether the tid field is set.

hashCode()

public int hashCode()

Returns
Type	Description
`int`

Overrides

AbstractMessage.hashCode()

internalGetFieldAccessorTable()

protected GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()

Returns
Type	Description
`FieldAccessorTable`

Overrides

GeneratedMessageV3.internalGetFieldAccessorTable()

isInitialized()

public final boolean isInitialized()

Returns
Type	Description
`boolean`

Overrides

GeneratedMessageV3.isInitialized()

newBuilderForType()

public StartBatchTransactionAction.Builder newBuilderForType()

Returns
Type	Description
`StartBatchTransactionAction.Builder`

newBuilderForType(GeneratedMessageV3.BuilderParent parent)

protected StartBatchTransactionAction.Builder newBuilderForType(GeneratedMessageV3.BuilderParent parent)

Parameter
Name	Description
`parent`	`BuilderParent`

Returns
Type	Description
`StartBatchTransactionAction.Builder`

Overrides

GeneratedMessageV3.newBuilderForType(GeneratedMessageV3.BuilderParent parent)

newInstance(GeneratedMessageV3.UnusedPrivateParameter unused)

protected Object newInstance(GeneratedMessageV3.UnusedPrivateParameter unused)

Parameter
Name	Description
`unused`	`UnusedPrivateParameter`

Returns
Type	Description
`Object`

Overrides

GeneratedMessageV3.newInstance(GeneratedMessageV3.UnusedPrivateParameter unused)

toBuilder()

public StartBatchTransactionAction.Builder toBuilder()

Returns
Type	Description
`StartBatchTransactionAction.Builder`

writeTo(CodedOutputStream output)

public void writeTo(CodedOutputStream output)

Parameter
Name	Description
`output`	`CodedOutputStream`

Overrides

GeneratedMessageV3.writeTo(CodedOutputStream output)

Exceptions
Type	Description
`IOException`