UniqFilter (Apache Ant API)
Description: declaration: package: org.apache.tools.ant.filters, class: UniqFilter

Package org.apache.tools.ant.filters

# Class UniqFilter

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.filters.TokenFilter.ChainableReaderFilter
org.apache.tools.ant.filters.UniqFilter

All Implemented Interfaces:
  `Cloneable`, `ChainableReader`, `TokenFilter.Filter`

public class UniqFilter extends TokenFilter.ChainableReaderFilter
Like the Unix uniq(1) command, only returns tokens that are different from their ancestor token.

This filter is probably most useful if used together with a sortfilter.

Since:
  Ant 1.8.0

- ## Field Summary

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

  `description, location, project`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `UniqFilter()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `String`
  `filter(String string)`
  filter and/of modify a string

  ### Methods inherited from class org.apache.tools.ant.filters.TokenFilter.ChainableReaderFilter

  `chain, setByLine`

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

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

  ### Methods inherited from class java.lang.Object

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

- ## Constructor Details

  - ### UniqFilter

    public UniqFilter()

- ## Method Details

  - ### filter

    public String filter(String string)
    Description copied from interface: `TokenFilter.Filter`
    filter and/of modify a string
    Parameters:
      `string` - the string to filter
    Returns:
      the modified string or null if the string did not pass the filter