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

java.lang.Object
  org.apache.tools.ant.ProjectComponent
      org.apache.tools.ant.types.DataType
          org.apache.tools.ant.types.resources.comparators.ResourceComparator

All Implemented Interfaces:

java.lang.Cloneable, java.util.Comparator

Direct Known Subclasses:

Content, Date, DelegatedResourceComparator, Exists, FileSystem, Name, Reverse, Size, Type

public abstract class ResourceComparator
extends DataType
implements java.util.Comparator

Abstract Resource Comparator.

Since:

Ant 1.7

Field Summary

Fields inherited from class org.apache.tools.ant.types.DataType

checked, ref

Fields inherited from class org.apache.tools.ant.ProjectComponent

description, location, project

Constructor Summary

ResourceComparator()

Method Summary

int	compare(java.lang.Object foo, java.lang.Object bar) Compare two objects.
boolean	equals(java.lang.Object o) Test for equality with this ResourceComparator.
int	hashCode() Hashcode based on the rules for equality.
protected abstract int	resourceCompare(Resource foo, Resource bar) Compare two Resources.

Methods inherited from class org.apache.tools.ant.types.DataType

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

Methods inherited from class org.apache.tools.ant.ProjectComponent

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceComparator

public ResourceComparator()

Method Detail

compare

public final int compare(java.lang.Object foo,
                         java.lang.Object bar)

Compare two objects.

Specified by:

compare in interface java.util.Comparator

Parameters:

foo - the first Object.

bar - the second Object.

Returns:

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

Throws:

java.lang.ClassCastException - if either argument is null.

equals

public boolean equals(java.lang.Object o)

Test for equality with this ResourceComparator.

Specified by:

equals in interface java.util.Comparator

Overrides:

equals in class java.lang.Object

Parameters:

o - the Object to compare against.

Returns:

true if the specified Object equals this one.

hashCode

public int hashCode()

Hashcode based on the rules for equality.

Overrides:

hashCode in class java.lang.Object

Returns:

a hashcode.

resourceCompare

protected abstract int resourceCompare(Resource foo,
                                       Resource bar)

Compare two Resources.

Parameters:

foo - the first Resource.

bar - the second Resource.

Returns:

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