Package org.apache.tools.ant.types.selectors.modifiedselector

Class HashvalueAlgorithm

java.lang.Object
org.apache.tools.ant.types.selectors.modifiedselector.HashvalueAlgorithm
All Implemented Interfaces:
Algorithm
public class HashvalueAlgorithm
extends java.lang.Object
implements Algorithm
Computes a 'hashvalue' for the content of file using String.hashValue(). Use of this algorithm doesn't require any additional nested <param>s and doesn't support any.
Since:
Ant 1.6
Version:
2003-09-13

  • Constructor Summary

    Constructors 
    Constructor Description
    HashvalueAlgorithm()  

  • Method Summary

    Modifier and Type Method Description
    java.lang.String getValue​(java.io.File file)
    Computes a 'hashvalue' for a file content.
    boolean isValid()
    This algorithm doesn't need any configuration.
    java.lang.String toString()
    Override Object.toString().

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Constructor Details

  • Method Details

    • isValid

      public boolean isValid()
      This algorithm doesn't need any configuration. Therefore it's always valid.
      Specified by:
      isValid in interface Algorithm
      Returns:
      always true

    • getValue

      public java.lang.String getValue​(java.io.File file)
      Computes a 'hashvalue' for a file content. It reads the content of a file, convert that to String and use the String.hashCode() method.
      Specified by:
      getValue in interface Algorithm
      Parameters:
      file - The file for which the value should be computed
      Returns:
      the hashvalue or null if the file couldn't be read

    • toString

      public java.lang.String toString()
      Override Object.toString().
      Overrides:
      toString in class java.lang.Object
      Returns:
      information about this comparator