de.schwarzrot.data.transaction
Class TOCount<E extends Entity>

java.lang.Object
  de.schwarzrot.data.transaction.support.AbstractTransactionalOperation<E>
      de.schwarzrot.data.transaction.support.AbstractConditionTransactionalOperation<E>
          de.schwarzrot.data.transaction.TOCount<E>

Type Parameters:

E - entity of involved instance

All Implemented Interfaces:

TransactionalOperation<E>

public class TOCount<E extends Entity>
extends AbstractConditionTransactionalOperation<E>

describes an operation, bound in a transaction, that is used to count all persistent instances of given Entity. The optional condition can be used to filter the instances, that should get counted.

Author:

Reinhard Mantey

Nested Class Summary

Nested classes/interfaces inherited from interface de.schwarzrot.data.transaction.TransactionalOperation

TransactionalOperation.DataDirection

Constructor Summary

TOCount(Class<E> entityType)
creates a counting operation for a transaction.

TOCount(Class<E> entityType, ConditionElement arg)
creates a counting operation for a transaction.

TOCount(Class<E> entityType, List<ConditionElement> args)
creates a counting operation for a transaction.

Method Summary

long	getResult()
void	setResult(long result)

Methods inherited from class de.schwarzrot.data.transaction.support.AbstractConditionTransactionalOperation

addCondition, clearCondition, getConditionArgs, setConditionArgs

Methods inherited from class de.schwarzrot.data.transaction.support.AbstractTransactionalOperation

getDataDirection, getEntityType, getOperationProperty, getResource, getTransaction, setEntityType, setOperationProperty, setResource, setTransaction

Methods inherited from class java.lang.Object

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

Constructor Detail

TOCount

public TOCount(Class<E> entityType)

creates a counting operation for a transaction. Using this constructor, all persistent instances of the given entityType will be counted.

Parameters:

entityType - the type of the instances to be counted

TOCount

public TOCount(Class<E> entityType,
               ConditionElement arg)

creates a counting operation for a transaction. Using this constructor, all persistent instances of the given entityType will be counted, that match given condition. This is constructor is for convenience, when condition is just a single element.

Parameters:

entityType - the type of the instances to be counted

arg - condition, the persistend instances must match

TOCount

public TOCount(Class<E> entityType,
               List<ConditionElement> args)

creates a counting operation for a transaction. Using this constructor, all persistent instances of the given entityType will be counted, that match given condition.

Parameters:

entityType - the type of the instances to be counted

args - condition, the persistent instances must match

Method Detail

getResult

public final long getResult()

setResult

public final void setResult(long result)