Mega Code Archive
Gets the first child element of a node
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/*
* XAdES4j - A Java library for generation and verification of XAdES signatures.
* Copyright (C) 2010 Luis Goncalves.
*
* XAdES4j is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or any later version.
*
* XAdES4j is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with XAdES4j. If not, see <http://www.gnu.org/licenses/>.
*/
//package xades4j.utils;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* Utility methods for DOM nodes.
*
* @author Luís
*/
public class DOMHelper {
/**
* Gets the first child element of a node.
* @param node the node to get the child from
* @return the first element child of {@code node} or {@code null} if none
* @throws NullPointerException if {@code node} is {@code null}
*/
public static Element getFirstChildElement(Node node)
{
node = node.getFirstChild();
while (node != null && node.getNodeType() != Node.ELEMENT_NODE)
{
node = node.getNextSibling();
}
return (Element)node;
}
}
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