Package org.springframework.data.gemfire.transaction.event

Class ComposableTransactionWriter

java.lang.Object

org.springframework.data.gemfire.transaction.event.ComposableTransactionWriter

All Implemented Interfaces:

CacheCallback, Declarable, TransactionWriter

public class ComposableTransactionWriter
extends Object
implements TransactionWriter

An implementation of Apache Geode's TransactionWriter interface that uses the Composite Software Design Pattern to compose multiple TransactionWriter objects into a single instance.

Since:

2.3.0

Author:

John Blum

See Also:

• TransactionWriter

Method Summary

Modifier and Type	Method	Description
void	beforeCommit(TransactionEvent event)
void	close()
static TransactionWriter	compose(TransactionWriter transactionWriterOne, TransactionWriter transactionWriterTwo)	Factory method used to construct and compose 2 TransactionWriter objects into a composite instance of TransactionWriter functioning as a single instance.
protected TransactionWriter	getTransactionWriterOne()	Returns a reference to the first TransactionWriter in the composition.
protected TransactionWriter	getTransactionWriterTwo()	Returns a reference to the second TransactionWriter in the composition.
void	init(Properties properties)
void	initialize(Cache cache, Properties properties)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

compose

@Nullable
public static TransactionWriter compose(@Nullable
 TransactionWriter transactionWriterOne,
 @Nullable
 TransactionWriter transactionWriterTwo)

Factory method used to construct and compose 2 TransactionWriter objects into a composite instance of TransactionWriter functioning as a single instance.

Parameters:

transactionWriterOne - first TransactionWriter in the composition.

transactionWriterTwo - second TransactionWriter in the composition.

Returns:

the first TransactionWriter if the second TransactionWriter is null, or return the second TransactionWriter if the first TransactionWriter is null, or return the composition of both TransactionWriter one and TransactionWriter two.

See Also:

• TransactionWriter

getTransactionWriterOne

protected TransactionWriter getTransactionWriterOne()

Returns a reference to the first TransactionWriter in the composition.

Returns:

a reference to the first TransactionWriter in the composition.

See Also:

• TransactionWriter

getTransactionWriterTwo

protected TransactionWriter getTransactionWriterTwo()

Returns a reference to the second TransactionWriter in the composition.

Returns:

a reference to the second TransactionWriter in the composition.

See Also:

• TransactionWriter

beforeCommit

public void beforeCommit(TransactionEvent event)
                  throws TransactionWriterException

Specified by:

beforeCommit in interface TransactionWriter

Throws:

TransactionWriterException

close

public void close()

Specified by:

close in interface CacheCallback

init

public void init(Properties properties)

Specified by:

init in interface Declarable

initialize

public void initialize(Cache cache,
 Properties properties)

Specified by:

initialize in interface Declarable