ResourceComparator (Apache Ant API)
Date: 2008-06-27

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## 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.

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