Get the target namespace corresponding to a prefix. - Java XML

Java examples for XML:Namespace

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Description

Get the target namespace corresponding to a prefix.

Demo Code

/*//from  w w  w.  ja  v a2 s.c  om
 *  Copyright 2006-2015 WebPKI.org (http://webpki.org).
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
//package com.java2s;

import org.w3c.dom.Node;
import org.w3c.dom.Element;

public class Main {
    /**
     * Get the target namespace corresponding to a prefix.
     * @param e Element
     * @param prefix Prefix
     * @return Namespace URI
     */
    public static String getNamespace(Element e, String prefix) {
        String nsURI = null;
        Node n;

        while ((nsURI = e.getAttribute(prefix != null ? "xmlns:" + prefix
                : "xmlns")) == null
                && (n = e.getParentNode()) != null
                && n instanceof Element) {
            e = (Element) n;
        }

        return nsURI;
    }
}

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