Package org.apache.axiom.om.impl.dom

Source Code of org.apache.axiom.om.impl.dom.NamedNodeHelper

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.axiom.om.impl.dom;

import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.om.impl.common.OMNamespaceImpl;
import org.w3c.dom.DOMException;

public final class NamedNodeHelper {
    private NamedNodeHelper() {}

    public static void setPrefix(NamedNode node, String prefix) throws DOMException {
        if (prefix == null) {
            prefix = "";
        }
        OMNamespace ns = node.getNamespace();
        if (ns == null) {
            if (prefix.length() > 0) {
                String msg = DOMMessageFormatter.formatMessage(
                        DOMMessageFormatter.DOM_DOMAIN,
                        DOMException.NAMESPACE_ERR,
                        null);
                throw new DOMException(DOMException.NAMESPACE_ERR, msg);
            } else {
                // No need to set a new OMNamespace in this case
            }
        } else {
            node.internalSetNamespace(new OMNamespaceImpl(ns.getNamespaceURI(), prefix == null ? "" : prefix));
        }
    }
}
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