au.com.prunge.jgenfile.impl
Class ConstantCanGetParentOperation

java.lang.Object
  |
  +--au.com.prunge.jgenfile.impl.AbstractOperation
        |
        +--au.com.prunge.jgenfile.impl.AbstractItemOperation
              |
              +--au.com.prunge.jgenfile.impl.ConstantCanGetParentOperation

All Implemented Interfaces:

CanGetParentOperation, ConstantOperation, ItemOperation, Operation

public class ConstantCanGetParentOperation

extends AbstractItemOperation

implements CanGetParentOperation, ConstantOperation

A CanGetParent operation that always returns a constant value of either true or false.

Version:

1.0

Author:

Peter Runge

Constructor Summary

ConstantCanGetParentOperation(au.com.prunge.jgenfile.Item item, boolean canGetParent)
Constructs a ConstantCanGetParentOperation.

Method Summary

boolean	canGetParent() Returns whether the parent of the item can be acquired.
void	runImpl() The actual run() implementation goes in this method.

Methods inherited from class au.com.prunge.jgenfile.impl.AbstractItemOperation

getItem

Methods inherited from class au.com.prunge.jgenfile.impl.AbstractOperation

abort, addOperationHints, checkRun, getLastRunException, getOperationHint, getOperationHints, hasRun, run, setLastRunException, setOperationHint, setOperationHints

Methods inherited from class java.lang.Object

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

Methods inherited from interface au.com.prunge.jgenfile.ItemOperation

getItem

Methods inherited from interface au.com.prunge.jgenfile.Operation

abort, addOperationHints, getLastRunException, getOperationHint, getOperationHints, hasRun, run, setOperationHint, setOperationHints

Constructor Detail

ConstantCanGetParentOperation

public ConstantCanGetParentOperation(au.com.prunge.jgenfile.Item item,
                                     boolean canGetParent)

Constructs a ConstantCanGetParentOperation.

Parameters:

item - the item the operation is for.

canGetParent - the constant result of this operation.

Method Detail

canGetParent

public boolean canGetParent()
                     throws OperationNotFinishedException,
                            JGenFileException

Description copied from interface: CanGetParentOperation

Returns whether the parent of the item can be acquired.

Specified by:

canGetParent in interface CanGetParentOperation

Returns:

a constant value of either true or false.

Throws:

JGenFileException - if another error occurs.

OperationNotFinishedException - if this method was called and the run() method has not finished or has not been called.

See Also:

CanGetParentOperation.canGetParent()

runImpl

public void runImpl()
             throws JGenFileException

Description copied from class: AbstractOperation

The actual run() implementation goes in this method. Setting the last run exception and setting hasRun to true is not required by this method as it is handled by the run() method in this class.

If this method completes successfully (i.e. without throwing an exception), the last run exception is set to null indicating no exception occurred and subsequent calls to hasRun() will return true.

If this method throws an exception, the last run exception is filled in and hasRun() subsequent calls to hasRun() will return false.

Specified by:

runImpl in class AbstractOperation

Throws:

JGenFileException - if an error occurs.

See Also:

au.com.prunge.jgenfile.AbstractOperation#runImpl()