DelegatedResourceComparator (Apache Ant API)
Date: 2012-02-26

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## org.apache.tools.ant.types.resources.comparators
Class DelegatedResourceComparator

    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.DelegatedResourceComparator

All Implemented Interfaces:
  java.lang.Cloneable, java.util.Comparator

    public class DelegatedResourceComparator

extends ResourceComparator

Delegates to other ResourceComparators or, if none specified, uses Resources' natural ordering.

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
`DelegatedResourceComparator()`

Method Summary
`void` | `add(ResourceComparator c)` Add a delegate ResourceComparator.
`protected void` | `dieOnCircularReference(java.util.Stack stk, Project p)` Overrides the version from DataType to recurse on nested ResourceSelector s.
`boolean` | `equals(java.lang.Object o)` Equality method based on the vector of resources, or if a reference, the referredto object.
`int` | `hashCode()` Hashcode based on the rules for equality.
`protected int` | `resourceCompare(Resource foo, Resource bar)` Compare two Resources.

Methods inherited from class org.apache.tools.ant.types.resources.comparators.ResourceComparator
`compare`

Methods inherited from class org.apache.tools.ant.types.DataType
`checkAttributesAllowed, checkChildrenAllowed, circularReference, clone, dieOnCircularReference, dieOnCircularReference, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, pushAndInvokeCircularReferenceCheck, 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

### DelegatedResourceComparator

    public DelegatedResourceComparator()

Method Detail

### add

    public void add(ResourceComparator c)

  Add a delegate ResourceComparator.

  Parameters:
    `c` - the next delegate ResourceComparator.

### equals

    public boolean equals(java.lang.Object o)

  Equality method based on the vector of resources, or if a reference, the referredto object.

  Specified by:
    `equals` in interface `java.util.Comparator`
  Overrides:
    `equals` in class `ResourceComparator`
  Parameters:
    `o` - the object to check against.
  Returns:
    true if there is equality.

### hashCode

    public int hashCode()

  Hashcode based on the rules for equality.

  Overrides:
    `hashCode` in class `ResourceComparator`
  Returns:
    a hashcode.

### 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 less than, equal to, or greater than the second.

### dieOnCircularReference

    protected void dieOnCircularReference(java.util.Stack stk,
                                          Project p)
                                   throws BuildException

  Overrides the version from DataType to recurse on nested ResourceSelector s.

  Overrides:
    `dieOnCircularReference` in class `DataType`
  Parameters:
    `stk` - the Stack of references.
    `p` - the Project to resolve against.
  Throws:
    `BuildException` - on error.

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