/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

package com.sun.xml.internal.rngom.dt;

import org.relaxng.datatype.DatatypeLibrary;
import org.relaxng.datatype.DatatypeLibraryFactory;

/**
 *
 *
 * @author
 *      Kohsuke Kawaguchi (kk@kohsuke.org)
 */
public class CascadingDatatypeLibraryFactory implements DatatypeLibraryFactory {
    private final DatatypeLibraryFactory factory1;
    private final DatatypeLibraryFactory factory2;

    public CascadingDatatypeLibraryFactory( DatatypeLibraryFactory factory1, DatatypeLibraryFactory factory2) {
        this.factory1 = factory1;
        this.factory2 = factory2;
    }

    public DatatypeLibrary createDatatypeLibrary(String namespaceURI) {
        DatatypeLibrary lib = factory1.createDatatypeLibrary(namespaceURI);
        if(lib==null)
            lib = factory2.createDatatypeLibrary(namespaceURI);
        return lib;
    }

}