73 lines
1.6 KiB
Java
73 lines
1.6 KiB
Java
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package net.sourceforge.tuned;
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import java.util.ArrayList;
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import java.util.List;
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import javax.xml.xpath.XPathConstants;
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import javax.xml.xpath.XPathExpression;
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import javax.xml.xpath.XPathExpressionException;
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import javax.xml.xpath.XPathFactory;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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public class XPathUtil {
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public static Node selectNode(String xpath, Object node) {
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try {
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return (Node) getXPath(xpath).evaluate(node, XPathConstants.NODE);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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public static Node selectFirstNode(String xpath, Object node) {
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try {
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NodeList nodeList = (NodeList) getXPath(xpath).evaluate(node, XPathConstants.NODESET);
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if (nodeList.getLength() <= 0)
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return null;
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return nodeList.item(0);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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public static List<Node> selectNodes(String xpath, Object node) {
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try {
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NodeList nodeList = (NodeList) getXPath(xpath).evaluate(node, XPathConstants.NODESET);
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ArrayList<Node> nodes = new ArrayList<Node>(nodeList.getLength());
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for (int i = 0; i < nodeList.getLength(); i++) {
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nodes.add(nodeList.item(i));
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}
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return nodes;
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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public static String selectString(String xpath, Object node) {
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try {
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return ((String) getXPath(xpath).evaluate(node, XPathConstants.STRING)).trim();
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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private static XPathExpression getXPath(String xpath) throws XPathExpressionException {
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return XPathFactory.newInstance().newXPath().compile(xpath);
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}
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}
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