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 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * 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

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package com.sun.org.apache.xerces.internal.util;

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, Sun Microsystems, inc.

 * @author Santiago.PericasGeertsen@sun.com

 *

 */

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.

     */

        if (namespaceURI == null) {

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

        }

        else {

                ((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;

    }

}