org.neo4j.server.rest.transactional

Class TransactionHandle

java.lang.Object

org.neo4j.server.rest.transactional.TransactionHandle

All Implemented Interfaces:

TransactionTerminationHandle

public class TransactionHandle
extends Object
implements TransactionTerminationHandle

Encapsulates executing statements in a transaction, committing the transaction, or rolling it back. Constructing a TransactionHandle does not immediately ask the kernel to create a KernelTransaction; instead a KernelTransaction is only created when the first statements need to be executed. At the end of each statement-executing method, the KernelTransaction is either suspended (ready to be resumed by a later operation), or committed, or rolled back. If you acquire instances of this class from TransactionHandleRegistry, it will prevent concurrent access to the same instance. Therefore the implementation assumes that a single instance will only be accessed from a single thread. All of the public methods on this class are "single-shot"; once you have called one method, the handle returns itself to the registry. If you want to use it again, you'll need to acquire it back from the registry to ensure exclusive use.

Constructor Summary

Constructors

Constructor and Description
TransactionHandle(TransitionalPeriodTransactionMessContainer txManagerFacade, org.neo4j.kernel.impl.query.QueryExecutionEngine engine, TransactionRegistry registry, TransactionUriScheme uriScheme, org.neo4j.logging.LogProvider logProvider, QuerySessionProvider sessionFactory)

Method Summary

Methods

Modifier and Type	Method and Description
void	commit(StatementDeserializer statements, ExecutionResultSerializer output, boolean pristine, javax.servlet.http.HttpServletRequest request)
void	execute(StatementDeserializer statements, ExecutionResultSerializer output, javax.servlet.http.HttpServletRequest request)
void	forceRollback()
void	rollback(ExecutionResultSerializer output)
boolean	terminate()
URI	uri()

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionHandle

public TransactionHandle(TransitionalPeriodTransactionMessContainer txManagerFacade,
                 org.neo4j.kernel.impl.query.QueryExecutionEngine engine,
                 TransactionRegistry registry,
                 TransactionUriScheme uriScheme,
                 org.neo4j.logging.LogProvider logProvider,
                 QuerySessionProvider sessionFactory)

Method Detail

uri

public URI uri()

execute

public void execute(StatementDeserializer statements,
           ExecutionResultSerializer output,
           javax.servlet.http.HttpServletRequest request)

terminate

public boolean terminate()

Specified by:

terminate in interface TransactionTerminationHandle

commit

public void commit(StatementDeserializer statements,
          ExecutionResultSerializer output,
          boolean pristine,
          javax.servlet.http.HttpServletRequest request)

rollback

public void rollback(ExecutionResultSerializer output)

forceRollback

public void forceRollback()
                   throws org.neo4j.kernel.api.exceptions.TransactionFailureException

Throws:

org.neo4j.kernel.api.exceptions.TransactionFailureException