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package org.eclipse.jst.jsf.common.internal.finder;
import java.util.Collections;
import java.util.List;
/**
* A finder that finds it's OUTPUT in INPUT by using a matching strategy.
* @author cbateman
* @param <INPUT>
* @param <OUTPUT>
* @param <IDTYPE>
*
*/
public abstract class AbstractMatcher<INPUT, OUTPUT, IDTYPE> extends AbstractFinder<INPUT, OUTPUT, IDTYPE>
{
private final List<? extends IMatcher> _matchers;
/**
* An interface that defines a match.
*
*/
public interface IMatcher
{
/**
* @param matchThis
* @return true if T matches the expected critieria
*/
boolean matches(Object matchThis);
}
/**
* A matcher that matches always.
* @author cbateman
*
*/
public static final class AlwaysMatcher implements IMatcher
{
public boolean matches(Object matchThis)
{
return true;
}
}
/**
* @param id
* @param displayName
* @param noResultValue
* @param matchers
*/
public AbstractMatcher(final IDTYPE id, final String displayName, final OUTPUT noResultValue, final List<? extends IMatcher> matchers)
{
super(id, displayName, noResultValue);
_matchers = matchers;
}
@Override
public abstract OUTPUT perform(INPUT input) throws Exception;
/**
* @return the matchers
*/
protected final List<IMatcher> getMatchers()
{
return Collections.unmodifiableList(_matchers);
}
}
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