Package org.springframework.data.neo4j.core.transaction

Class ReactiveNeo4jTransactionManager

java.lang.Object

org.springframework.transaction.reactive.AbstractReactiveTransactionManager

org.springframework.data.neo4j.core.transaction.ReactiveNeo4jTransactionManager

All Implemented Interfaces:

Serializable, Aware, ApplicationContextAware, ConfigurableTransactionManager, ReactiveTransactionManager, TransactionManager

@API(status=STABLE,
     since="6.0")
public final class ReactiveNeo4jTransactionManager
extends AbstractReactiveTransactionManager
implements ApplicationContextAware

Neo4j specific implementation of an AbstractReactiveTransactionManager.

Since:

6.0

Author:

Gerrit Meier, Michael J. Simons

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ReactiveNeo4jTransactionManager.Builder	A builder for ReactiveNeo4jTransactionManager.

Nested classes/interfaces inherited from class org.springframework.transaction.reactive.AbstractReactiveTransactionManager

AbstractReactiveTransactionManager.SuspendedResourcesHolder

Field Summary

Fields inherited from class org.springframework.transaction.reactive.AbstractReactiveTransactionManager

logger

Constructor Summary

Constructors

Constructor	Description
ReactiveNeo4jTransactionManager(org.neo4j.driver.Driver driver)	This will create a transaction manager for the default database.
ReactiveNeo4jTransactionManager(org.neo4j.driver.Driver driver, ReactiveDatabaseSelectionProvider databaseSelectionProvider)	This will create a transaction manager targeting whatever the database selection provider determines.
ReactiveNeo4jTransactionManager(org.neo4j.driver.Driver driver, ReactiveDatabaseSelectionProvider databaseSelectionProvider, Neo4jBookmarkManager bookmarkManager)	This constructor can be used to configure the bookmark manager being used.

Method Summary

Modifier and Type	Method	Description
protected Mono<Void>	doBegin(TransactionSynchronizationManager transactionSynchronizationManager, Object transaction, TransactionDefinition transactionDefinition)
protected Mono<Void>	doCleanupAfterCompletion(TransactionSynchronizationManager transactionSynchronizationManager, Object transaction)
protected Mono<Void>	doCommit(TransactionSynchronizationManager transactionSynchronizationManager, GenericReactiveTransaction genericReactiveTransaction)
protected Object	doGetTransaction(TransactionSynchronizationManager transactionSynchronizationManager)
protected Mono<Void>	doResume(TransactionSynchronizationManager synchronizationManager, @Nullable Object transaction, Object suspendedResources)
protected Mono<Void>	doRollback(TransactionSynchronizationManager transactionSynchronizationManager, GenericReactiveTransaction genericReactiveTransaction)
protected Mono<Void>	doSetRollbackOnly(TransactionSynchronizationManager synchronizationManager, GenericReactiveTransaction genericReactiveTransaction)
protected Mono<Object>	doSuspend(TransactionSynchronizationManager synchronizationManager, Object transaction)
protected boolean	isExistingTransaction(Object transaction)
static Mono<org.neo4j.driver.reactivestreams.ReactiveTransaction>	retrieveReactiveTransaction(org.neo4j.driver.Driver driver, DatabaseSelection targetDatabase, UserSelection asUser)	Retrieves a new transaction.
void	setApplicationContext(ApplicationContext applicationContext)
static ReactiveNeo4jTransactionManager.Builder	with(org.neo4j.driver.Driver driver)	Start building a new transaction manager for the given driver instance.

Methods inherited from class org.springframework.transaction.reactive.AbstractReactiveTransactionManager

commit, getReactiveTransaction, getTransactionExecutionListeners, prepareForCommit, registerAfterCompletionWithExistingTransaction, rollback, setTransactionExecutionListeners

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.transaction.ConfigurableTransactionManager

addListener

Constructor Details

ReactiveNeo4jTransactionManager

public ReactiveNeo4jTransactionManager(org.neo4j.driver.Driver driver)

This will create a transaction manager for the default database.

Parameters:

driver - a driver instance

ReactiveNeo4jTransactionManager

public ReactiveNeo4jTransactionManager(org.neo4j.driver.Driver driver,
 ReactiveDatabaseSelectionProvider databaseSelectionProvider)

This will create a transaction manager targeting whatever the database selection provider determines.

Parameters:

driver - a driver instance

databaseSelectionProvider - the database selection provider to determine the database in which the transactions should happen

ReactiveNeo4jTransactionManager

public ReactiveNeo4jTransactionManager(org.neo4j.driver.Driver driver,
 ReactiveDatabaseSelectionProvider databaseSelectionProvider,
 Neo4jBookmarkManager bookmarkManager)

This constructor can be used to configure the bookmark manager being used. It is useful when you need to seed the bookmark manager or if you want to capture new bookmarks.

Parameters:

driver - a driver instance

databaseSelectionProvider - the database selection provider to determine the database in which the transactions should happen

bookmarkManager - a bookmark manager

Method Details

with

@API(status=STABLE,
     since="6.2")
public static ReactiveNeo4jTransactionManager.Builder with(org.neo4j.driver.Driver driver)

Start building a new transaction manager for the given driver instance.

Parameters:

driver - a fixed driver instance.

Returns:

a builder for a transaction manager

retrieveReactiveTransaction

public static Mono<org.neo4j.driver.reactivestreams.ReactiveTransaction> retrieveReactiveTransaction(org.neo4j.driver.Driver driver,
 DatabaseSelection targetDatabase,
 UserSelection asUser)

Retrieves a new transaction.

Parameters:

driver - the driver that has been used as a synchronization object.

targetDatabase - the target database

asUser - the target user

Returns:

an optional managed transaction or null if the method hasn't been called inside an ongoing Spring transaction

setApplicationContext

public void setApplicationContext(ApplicationContext applicationContext)
                           throws BeansException

Specified by:

setApplicationContext in interface ApplicationContextAware

Throws:

BeansException

doGetTransaction

protected Object doGetTransaction(TransactionSynchronizationManager transactionSynchronizationManager)
                           throws TransactionException

Specified by:

doGetTransaction in class AbstractReactiveTransactionManager

Throws:

TransactionException

isExistingTransaction

protected boolean isExistingTransaction(Object transaction)
                                 throws TransactionException

Overrides:

isExistingTransaction in class AbstractReactiveTransactionManager

Throws:

TransactionException

doBegin

protected Mono<Void> doBegin(TransactionSynchronizationManager transactionSynchronizationManager,
 Object transaction,
 TransactionDefinition transactionDefinition)
                      throws TransactionException

Specified by:

doBegin in class AbstractReactiveTransactionManager

Throws:

TransactionException

doCleanupAfterCompletion

protected Mono<Void> doCleanupAfterCompletion(TransactionSynchronizationManager transactionSynchronizationManager,
 Object transaction)

Overrides:

doCleanupAfterCompletion in class AbstractReactiveTransactionManager

doCommit

protected Mono<Void> doCommit(TransactionSynchronizationManager transactionSynchronizationManager,
 GenericReactiveTransaction genericReactiveTransaction)
                       throws TransactionException

Specified by:

doCommit in class AbstractReactiveTransactionManager

Throws:

TransactionException

doRollback

protected Mono<Void> doRollback(TransactionSynchronizationManager transactionSynchronizationManager,
 GenericReactiveTransaction genericReactiveTransaction)
                         throws TransactionException

Specified by:

doRollback in class AbstractReactiveTransactionManager

Throws:

TransactionException

doSuspend

protected Mono<Object> doSuspend(TransactionSynchronizationManager synchronizationManager,
 Object transaction)
                          throws TransactionException

Overrides:

doSuspend in class AbstractReactiveTransactionManager

Throws:

TransactionException

doResume

protected Mono<Void> doResume(TransactionSynchronizationManager synchronizationManager,
 @Nullable Object transaction,
 Object suspendedResources)
                       throws TransactionException

Overrides:

doResume in class AbstractReactiveTransactionManager

Throws:

TransactionException

doSetRollbackOnly

protected Mono<Void> doSetRollbackOnly(TransactionSynchronizationManager synchronizationManager,
 GenericReactiveTransaction genericReactiveTransaction)
                                throws TransactionException

Overrides:

doSetRollbackOnly in class AbstractReactiveTransactionManager

Throws:

TransactionException