Class Reverse

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.apache.tools.ant.types.DataType

org.apache.tools.ant.types.resources.comparators.ResourceComparator

org.apache.tools.ant.types.resources.comparators.Reverse

All Implemented Interfaces:

Cloneable, Comparator<Resource>

public class Reverse
extends ResourceComparator

Reverses another ResourceComparator. If no nested ResourceComparator is supplied, the compared Resources' natural order will be reversed.

Since:

Ant 1.7

Field Summary

Fields inherited from class DataType

checked, ref

Modifier and Type	Field	Description
protected boolean	checked	Deprecated. since 1.7.
protected Reference	ref	Deprecated. since 1.7.

Fields inherited from class ProjectComponent

description, location, project

Modifier and Type	Field	Description
protected String	description	Deprecated. since 1.6.x.
protected Location	location	Deprecated. since 1.6.x.
protected Project	project	Deprecated. since 1.6.x.

Constructor Summary

Constructors

Constructor	Description
Reverse()	Default constructor.
Reverse(ResourceComparator c)	Construct a new Reverse, supplying the ResourceComparator to be reversed.

Method Summary

Modifier and Type	Method	Description
void	add(ResourceComparator c)	Add the ResourceComparator to reverse.
protected void	dieOnCircularReference(Stack<Object> stk, Project p)	Check to see whether any DataType we hold references to is included in the Stack (which holds all DataType instances that directly or indirectly reference this instance, including this instance itself).
protected int	resourceCompare(Resource foo, Resource bar)	Compare two Resources.

Methods inherited from class ResourceComparator

compare, equals, hashCode

Modifier and Type	Method	Description
final int	compare(Resource foo, Resource bar)	Compare two objects.
boolean	equals(Object o)	Test for equality with this ResourceComparator.
int	hashCode()	Hashcode based on the rules for equality.

Methods inherited from class DataType

checkAttributesAllowed, checkChildrenAllowed, circularReference, clone, dieOnCircularReference, dieOnCircularReference, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, pushAndInvokeCircularReferenceCheck, setChecked, setRefid, tooManyAttributes, toString

Modifier and Type	Method	Description
protected void	checkAttributesAllowed()	check that it is ok to set attributes, i.e that no reference is defined
protected void	checkChildrenAllowed()	check that it is ok to add children, i.e that no reference is defined
protected BuildException	circularReference()	Creates an exception that indicates the user has generated a loop of data types referencing each other.
Object	clone()
protected void	dieOnCircularReference()	Convenience method.
protected void	dieOnCircularReference(Project p)	Convenience method.
protected <T> T	getCheckedRef()	Deprecated. use getCheckedRef(Class)
protected <T> T	getCheckedRef(Class<T> requiredClass)	Performs the check for circular references and returns the referenced object.
protected <T> T	getCheckedRef(Class<T> requiredClass, String dataTypeName)	Performs the check for circular references and returns the referenced object.
protected <T> T	getCheckedRef(Class<T> requiredClass, String dataTypeName, Project project)	Performs the check for circular references and returns the referenced object.
protected <T> T	getCheckedRef(Project p)	Deprecated. use getCheckedRef(Class)
protected String	getDataTypeName()	Gets as descriptive as possible a name used for this datatype instance.
Reference	getRefid()	get the reference set on this object
static void	invokeCircularReferenceCheck(DataType dt, Stack<Object> stk, Project p)	Allow DataTypes outside org.apache.tools.ant.types to indirectly call dieOnCircularReference on nested DataTypes.
protected boolean	isChecked()	The flag that is used to indicate that circular references have been checked.
boolean	isReference()	Has the refid attribute of this element been set?
protected BuildException	noChildrenAllowed()	Creates an exception that indicates that this XML element must not have child elements if the refid attribute is set.
static void	pushAndInvokeCircularReferenceCheck(DataType dt, Stack<Object> stk, Project p)	Allow DataTypes outside org.apache.tools.ant.types to indirectly call dieOnCircularReference on nested DataTypes.
protected void	setChecked(boolean checked)	Set the flag that is used to indicate that circular references have been checked.
void	setRefid(Reference ref)	Set the value of the refid attribute.
protected BuildException	tooManyAttributes()	Creates an exception that indicates that refid has to be the only attribute if it is set.
String	toString()	Basic DataType toString().

Methods inherited from class ProjectComponent

getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject

Modifier and Type	Method	Description
String	getDescription()	Returns the description of the current action.
Location	getLocation()	Returns the file/location where this task was defined.
Project	getProject()	Returns the project to which this component belongs.
void	log(String msg)	Logs a message with the default (INFO) priority.
void	log(String msg, int msgLevel)	Logs a message with the given priority.
void	setDescription(String desc)	Sets a description of the current action.
void	setLocation(Location location)	Sets the file/location where this task was defined.
void	setProject(Project project)	Sets the project object of this component.

Methods inherited from class Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Comparator

max, min, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

Reverse

public Reverse()

Default constructor.

Reverse

public Reverse(ResourceComparator c)

Construct a new Reverse, supplying the ResourceComparator to be reversed.

Parameters:

c - the ResourceComparator to reverse.

Method Details

add

public void add(ResourceComparator c)

Add the ResourceComparator to reverse.

Parameters:

c - the ResourceComparator to add.

resourceCompare

protected int resourceCompare(Resource foo,
 Resource bar)

Compare two Resources.

Specified by:

resourceCompare in class ResourceComparator

Parameters:

foo - the first Resource.

bar - the second Resource.

Returns:

a negative integer, zero, or a positive integer as the first argument is greater than, equal to, or less than the second.

dieOnCircularReference

protected void dieOnCircularReference(Stack<Object> stk,
 Project p)
                               throws BuildException

Description copied from class: DataType

Check to see whether any DataType we hold references to is included in the Stack (which holds all DataType instances that directly or indirectly reference this instance, including this instance itself).

If one is included, throw a BuildException created by circularReference.

This implementation is appropriate only for a DataType that cannot hold other DataTypes as children.

The general contract of this method is that it shouldn't do anything if DataType.checked is true and set it to true on exit.

Overrides:

dieOnCircularReference in class DataType

Parameters:

stk - the stack of references to check.

p - the project to use to dereference the references.

Throws:

BuildException - on error.