package org.eclipse.jst.jsf.common.internal.finder.acceptor;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

import org.eclipse.jst.jsf.common.internal.finder.VisitorMatcher.MatchingAcceptor;

/**
 * An acceptor that gets the jar entries from a jar file.
 * 
 * @author cbateman
 *
 */
public class JarEntryMatchingAcceptor extends
        MatchingAcceptor<JarFile, JarEntry>
{

    @Override
    protected Collection<? extends JarEntry> getInputChildren(JarFile inputType)
    {
        final List<JarEntry>  children = new ArrayList<JarEntry>();
        Enumeration<JarEntry> entries = inputType.entries();
        while (entries.hasMoreElements())
        {
            children.add(entries.nextElement());
        }
        return children;
    }

    @Override
    protected Collection<? extends JarEntry> getVisitableChildren(
            JarEntry visitType)
    {
        return Collections.EMPTY_LIST;
    }

}