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 * Copyright (c) 2005, 2017, 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.org.apache.xerces.internal.util;

import java.util.Iterator;

import java.util.List;

import javax.xml.namespace.NamespaceContext;

/**

 * Writing a wrapper to re-use most of the namespace functionality

 * already provided by NamespaceSupport, which implements NamespaceContext

 * from XNI. It would be good if we can change the XNI NamespaceContext

 * interface to implement the JAXP NamespaceContext interface.

 *

 * Note that NamespaceSupport assumes the use of symbols. Since this class

 * can be exposed to the application, we must intern all Strings before

 * calling NamespaceSupport methods.

 *

 * @author  Neeraj Bajaj

 * @author Santiago PericasGeertsen

 *

 */

public class NamespaceContextWrapper implements NamespaceContext {

    private com.sun.org.apache.xerces.internal.xni.NamespaceContext fNamespaceContext;

    public NamespaceContextWrapper(NamespaceSupport namespaceContext) {

        fNamespaceContext = namespaceContext ;

    }

    public String getNamespaceURI(String prefix) {

        if (prefix == null) {

            throw new IllegalArgumentException("Prefix can't be null");

        }

        return fNamespaceContext.getURI(prefix.intern());

    }

    public String getPrefix(String namespaceURI) {

        if (namespaceURI == null) {

            throw new IllegalArgumentException("URI can't be null.");

        }

        return fNamespaceContext.getPrefix(namespaceURI.intern());

    }

    /**

     * TODO: Namespace doesn't give information giving multiple prefixes for

     * the same namespaceURI.

     */

    public Iterator<String> getPrefixes(String namespaceURI) {

        if (namespaceURI == null) {

            throw new IllegalArgumentException("URI can't be null.");

        }

        else {

           List<String> vector =

                ((NamespaceSupport) fNamespaceContext).getPrefixes(namespaceURI.intern());

            return vector.iterator();

        }

    }

    /**

     * This method supports all functions in the NamespaceContext utility class

     */

    public com.sun.org.apache.xerces.internal.xni.NamespaceContext getNamespaceContext() {

        return fNamespaceContext;

    }

}