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 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 Details

    • HashvalueAlgorithm

      public HashvalueAlgorithm()

  • 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 String getValue(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 String toString()
      Override Object.toString().
      Overrides:
      toString in class Object
      Returns:
      information about this comparator