software.amazon.qldb

Class TransactionExecutor

java.lang.Object

software.amazon.qldb.TransactionExecutor

All Implemented Interfaces:

Executable

public class TransactionExecutor
extends Object
implements Executable

Transaction object used within lambda executions to provide a reduced view that allows only the operations that are valid within the context of an active managed transaction.

Constructor Summary

Constructors

Constructor and Description
TransactionExecutor(Transaction transaction) Constructor.

Method Summary

Modifier and Type	Method and Description
void	abort() Abort the transaction and roll back any changes.
Result	execute(String statement) Execute the statement against QLDB and retrieve the result.
Result	execute(String statement, com.amazon.ion.IonValue... parameters) Execute the statement using the specified parameters against QLDB and retrieve the result.
Result	execute(String statement, List<com.amazon.ion.IonValue> parameters) Execute the statement using the specified parameters against QLDB and retrieve the result.
String	getTransactionId() Get the ID of the current transaction.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionExecutor

public TransactionExecutor(Transaction transaction)

Constructor.

Parameters:

transaction - The transaction object the TransactionExecutor wraps.

Method Detail

abort

public void abort()

Abort the transaction and roll back any changes.

execute

public Result execute(String statement)

Execute the statement against QLDB and retrieve the result.

Specified by:

execute in interface Executable

Parameters:

statement - The PartiQL statement to be executed against QLDB.

Returns:

The result of executing the statement.

Throws:

com.amazonaws.AmazonClientException - if there is an error executing against QLDB.

execute

public Result execute(String statement,
                      List<com.amazon.ion.IonValue> parameters)

Execute the statement using the specified parameters against QLDB and retrieve the result.

Specified by:

execute in interface Executable

Parameters:

statement - The PartiQL statement to be executed against QLDB.

parameters - The parameters to be used with the PartiQL statement, for each ? placeholder in the statement.

Returns:

The result of executing the statement.

Throws:

com.amazonaws.AmazonClientException - if there is an error executing against QLDB.

execute

public Result execute(String statement,
                      com.amazon.ion.IonValue... parameters)

Execute the statement using the specified parameters against QLDB and retrieve the result.

Specified by:

execute in interface Executable

Parameters:

statement - The PartiQL statement to be executed against QLDB.

parameters - The parameters to be used with the PartiQL statement, for each ? placeholder in the statement.

Returns:

The result of executing the statement.

Throws:

com.amazonaws.AmazonClientException - if there is an error executing against QLDB.

getTransactionId

public String getTransactionId()

Get the ID of the current transaction.

Returns:

The ID of the current transaction.