org.apache.tools.ant.types.selectors.modifiedselector
Interface Algorithm
- ChecksumAlgorithm, DigestAlgorithm, HashvalueAlgorithm
public interface Algorithm
The Algorithm defines how a value for a file is computed.
It must be sure that multiple calls for the same file results in the
same value.
The implementing class should implement a useful toString() method.
String | getValue(File file) - Get the value for a file.
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boolean | isValid() - Checks its prerequisites.
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getValue
public String getValue(File file)
Get the value for a file.
file
- File object for which the value should be evaluated.
isValid
public boolean isValid()
Checks its prerequisites.
- true if all is ok, otherwise false.