/*
* This file is part of the DiffX library.
*
* For licensing information please see the file license.txt included in the release.
* A copy of this licence can also be found at
* http://www.opensource.org/licenses/artistic-license-2.0.php
*/
package com.topologi.diffx.algorithm;
import java.io.IOException;
import com.topologi.diffx.format.DiffXFormatter;
import com.topologi.diffx.sequence.EventSequence;
/**
* Performs the diff comparison of sequences of events.
*
* @author Christophe Lauret
* @version 15 December 2004
*/
public interface DiffXAlgorithm {
/**
* Returns the length of the longest common subsequence.
*
* @return the length of the longest common subsequence.
*/
int length();
/**
* Performs the comparison and writes the results using the specified Diff-X formatter.
*
* @param formatter The formatter that will handle the output.
*
* @throws IOException If thrown by the formatter.
*/
void process(DiffXFormatter formatter) throws IOException;
/**
* Returns the first sequence used for the diff-x comparison.
*
* @return the first sequence used for the diff-x comparison.
*/
EventSequence getFirstSequence();
/**
* Returns the second sequence used for the diff-x comparison.
*
* @return the second sequence used for the diff-x comparison.
*/
EventSequence getSecondSequence();
}