Java XML Attribute from Element getValueAttribute(final Node aNode)

Description

Retrieves the value of the value attribute of the supplied Node.

License

Apache License

Parameter

Parameter	Description
aNode	A DOM Node.

Return

the value of the value attribute of the supplied Node/Element.

Declaration

public static String getValueAttribute(final Node aNode) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

public class Main {
    private static final String VALUE_ATTRIBUTE = "value";

    /**//ww  w.j  a  va  2  s.com
     * Retrieves the value of the {@code value} attribute of the supplied Node.
     *
     * @param aNode A DOM Node.
     * @return the value of the {@code value} attribute of the supplied Node/Element.
     */
    public static String getValueAttribute(final Node aNode) {
        return getNamedAttribute(aNode, VALUE_ATTRIBUTE);
    }

    private static String getNamedAttribute(final Node aNode, final String attributeName) {

        // Fail fast
        if (aNode == null) {
            return null;
        }

        final NamedNodeMap attributes = aNode.getAttributes();
        if (attributes != null) {

            final Node nameNode = attributes.getNamedItem(attributeName);
            if (nameNode != null) {
                return nameNode.getNodeValue().trim();
            }
        }

        // Not found.
        return null;
    }
}

Related

1. getTagAttributeRecursive(String sTag, String sAtt, Element eElement)
2. getTagAttributes(Element element)
3. getThisClassTypeAttr(Element methodNode)
4. getTrimedAttribute(Element elem, String attr_name)
5. getValue(final Element elem, final String attrName)
6. getValueAttributeUri(Element parent, String defaultBaseUri)
7. getValueForAttribute(String attributeName, Node parentNode)
8. getXMLAttribute(Element element, String attrName)
9. getXMLAttributeValue(Element node, String attributeName)