Java XML Attribute Get getAttributeValueEmptyNull(Element e, String attributeName)

Description

This function is much like getAttribute, but returns null, not "", for a nonexistent attribute.

License

Apache License

Parameter

Parameter	Description
e	a parameter
attributeName	a parameter

Declaration

public static String getAttributeValueEmptyNull(Element e, String attributeName) 

Method Source Code

//package com.java2s;
/**// w w  w.j  ava2s .  co m
 * 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.
 */

import org.w3c.dom.Attr;

import org.w3c.dom.Element;

public class Main {
    /**
     * This function is much like getAttribute, but returns null, not "", for a nonexistent attribute.
     * 
     * @param e
     * @param attributeName
     */
    public static String getAttributeValueEmptyNull(Element e, String attributeName) {
        Attr node = e.getAttributeNode(attributeName);
        if (node == null) {
            return null;
        }
        return node.getValue();
    }
}

Related

1. getAttributeValueBoolean(Node node, String attrName)
2. getAttributeValueByName(NamedNodeMap nnm, String name)
3. getAttributeValueByName(NamedNodeMap nnm, String name)
4. getAttributeValueByName(Node node, String name)
5. getAttributeValueByName(Node node, String name)
6. getAttributeValueIgnoreCase(Element element, String attributeName)
7. getAttributeValueNS(@Nonnull final Element aElement, @Nullable final String sNamespaceURI, @Nonnull final String sAttrName, @Nullable final String sDefault)
8. getAttributeValueNS(Element element, String namespace, String attrName)
9. getAttributeValueOrNull(NamedNodeMap attributes, String attributeName)