Package org.teiid.translator.loopback

Class LoopbackExecution

java.lang.Object

org.teiid.translator.loopback.LoopbackExecution

All Implemented Interfaces:

Execution, ProcedureExecution, ResultSetExecution, UpdateExecution

public class LoopbackExecution
extends Object
implements UpdateExecution, ProcedureExecution

Represents the execution of a command.

Field Summary

Fields

Modifier and Type	Field	Description
static Long	DAY_SECONDS

Constructor Summary

Constructors

Constructor	Description
LoopbackExecution(Command command, LoopbackExecutionFactory config, ExecutionContext context)

Method Summary

Modifier and Type	Method	Description
void	cancel()	Cancels the execution abnormally.
void	close()	Terminates the execution normally.
static String	constructIncrementedString(int characterValuesSize)	Creates string "ABCD...ZABC..." of length characterValueSize
void	execute()	Execute the associated command.
List<?>	getOutputParameterValues()	Get the output parameter values.
int[]	getUpdateCounts()	Returns the update counts for the execution.
static String	incrementString(String string, BigInteger number)	Increments the string by appending unique number in sequence.
List<?>	next()	Retrieves the next row of the resultset.

Methods inherited from class java.lang.Object

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

Field Detail

DAY_SECONDS

public static final Long DAY_SECONDS

Constructor Detail

LoopbackExecution

public LoopbackExecution(Command command,
                         LoopbackExecutionFactory config,
                         ExecutionContext context)

Method Detail

constructIncrementedString

public static String constructIncrementedString(int characterValuesSize)

Creates string "ABCD...ZABC..." of length characterValueSize

Parameters:

characterValuesSize -

Returns:

next

public List<?> next()
             throws TranslatorException,
                    DataNotAvailableException

Description copied from interface: ResultSetExecution

Retrieves the next row of the resultset.

Specified by:

next in interface ResultSetExecution

Returns:

the next row or null indicating that there are no more results

Throws:

TranslatorException

DataNotAvailableException

execute

public void execute()
             throws TranslatorException

Description copied from interface: Execution

Execute the associated command. Results will be retrieved through a specific sub-interface call.

Specified by:

execute in interface Execution

Throws:

TranslatorException

getUpdateCounts

public int[] getUpdateCounts()
                      throws DataNotAvailableException,
                             TranslatorException

Description copied from interface: UpdateExecution

Returns the update counts for the execution.
A single positive integer value is expected for non bulk/batch commands.
bulk/batch should return an integer for each value/command. 0 or greater for successful update count, -2 for no info, -3 failure

Specified by:

getUpdateCounts in interface UpdateExecution

Returns:

the update counts corresponding to the command executed

Throws:

DataNotAvailableException

TranslatorException

getOutputParameterValues

public List<?> getOutputParameterValues()
                                 throws TranslatorException

Description copied from interface: ProcedureExecution

Get the output parameter values. Results should place the return parameter first if it is present, then the IN/OUT and OUT parameters should follow in the order they appeared in the command.

Specified by:

getOutputParameterValues in interface ProcedureExecution

Throws:

TranslatorException - If an error occurs while retrieving the output value

close

public void close()

Description copied from interface: Execution

Terminates the execution normally.

Specified by:

close in interface Execution

cancel

public void cancel()
            throws TranslatorException

Description copied from interface: Execution

Cancels the execution abnormally. This will happen via a different thread from the one performing the execution, so should be expected to happen in a multi-threaded scenario.

Specified by:

cancel in interface Execution

Throws:

TranslatorException

incrementString

public static String incrementString(String string,
                                     BigInteger number)

Increments the string by appending unique number in sequence. Preserves string length.

Parameters:

number - Number in the sequence of strings (which row)

Returns: