package org.ovirt.engine.core.utils.ovf.xml;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.ovirt.engine.core.uutils.xml.SecureDocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
public class XmlDocument {
private String outerXml;
public XmlNode[] childNodes;
private Document doc;
public XmlDocument() {
}
public XmlDocument(String xml) throws Exception {
loadXml(xml);
}
private void loadXml(String ovfstring) throws Exception {
// load doc
DocumentBuilderFactory fact = SecureDocumentBuilderFactory.newDocumentBuilderFactory();
fact.setNamespaceAware(true);
DocumentBuilder builder = fact.newDocumentBuilder();
doc = builder.parse(new InputSource(new StringReader(ovfstring)));
// initialize all the child nodes
NodeList list = doc.getElementsByTagName("*");
childNodes = new XmlNode[list.getLength()];
for (int i = 0; i < list.getLength(); i++) {
childNodes[i] = new XmlNode(list.item(i));
}
outerXml = ovfstring;
}
public XmlNode selectSingleNode(String string) {
try {
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
Object o = xPath.evaluate(string, doc, XPathConstants.NODE);
return new XmlNode((Node) o);
} catch (XPathExpressionException e) {
throw new RuntimeException("Failed to evaluate xpath: " + string, e);
}
}
public XmlNode selectSingleNode(String string, XmlNamespaceManager _xmlns) {
try {
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
xPath.setNamespaceContext(_xmlns);
Object o = xPath.evaluate(string, doc, XPathConstants.NODE);
return new XmlNode((Node) o);
} catch (XPathExpressionException e) {
throw new RuntimeException("Failed to evaluate xpath: " + string, e);
}
}
public XmlNodeList selectNodes(String string) {
try {
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
Object o = xPath.evaluate(string, doc, XPathConstants.NODESET);
return new XmlNodeList((NodeList) o);
} catch (XPathExpressionException e) {
throw new RuntimeException("Failed to evaluate xpath: " + string, e);
}
}
public XmlNodeList selectNodes(String string, XmlNamespaceManager _xmlns) {
try {
XPathFactory factory = XPathFactory.newInstance();
XPath xPath = factory.newXPath();
xPath.setNamespaceContext(_xmlns);
Object o = xPath.evaluate(string, doc, XPathConstants.NODESET);
return new XmlNodeList((NodeList) o);
} catch (XPathExpressionException e) {
throw new RuntimeException("Failed to evaluate xpath: " + string, e);
}
}
public String getOuterXml() {
return outerXml;
}
}