jaxws/src/share/classes/com/sun/tools/internal/xjc/util/ForkEntityResolver.java

/*
 * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package com.sun.tools.internal.xjc.util;

import java.io.IOException;

import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * {@link EntityResolver} that delegates to two {@link EntityResolver}s.
 *
 * @author Kohsuke Kawaguchi
 */
public class ForkEntityResolver implements EntityResolver {
    private final EntityResolver lhs;
    private final EntityResolver rhs;

    public ForkEntityResolver(EntityResolver lhs, EntityResolver rhs) {
        this.lhs = lhs;
        this.rhs = rhs;
    }

    public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
        InputSource is = lhs.resolveEntity(publicId, systemId);
        if(is!=null)
            return is;
        return rhs.resolveEntity(publicId,systemId);
    }
}