Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ws.api.util;
import static org.jboss.ws.api.Messages.MESSAGES;
import static org.jboss.ws.api.Log.LOGGER;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Basic DOM2 utilities
*
* @author Alessio Soldano
* @author Thomas Diesler
*
*/
public abstract class DOMUtils
{
/** Get the qname of the given node.
*/
public static QName getElementQName(Element el)
{
String qualifiedName = el.getNodeName();
return resolveQName(el, qualifiedName);
}
/** Transform the given qualified name into a QName
*/
public static QName resolveQName(Element el, String qualifiedName)
{
QName qname;
String prefix = "";
String namespaceURI = "";
String localPart = qualifiedName;
int colIndex = qualifiedName.indexOf(":");
if (colIndex > 0)
{
prefix = qualifiedName.substring(0, colIndex);
localPart = qualifiedName.substring(colIndex + 1);
if ("xmlns".equals(prefix))
{
namespaceURI = "URI:XML_PREDEFINED_NAMESPACE";
}
else
{
Element nsElement = el;
while (namespaceURI.equals("") && nsElement != null)
{
namespaceURI = nsElement.getAttribute("xmlns:" + prefix);
if (namespaceURI.equals(""))
nsElement = getParentElement(nsElement);
}
}
if (namespaceURI.equals("") && el.getNamespaceURI() != null)
{
namespaceURI = el.getNamespaceURI();
}
if (namespaceURI.equals(""))
throw MESSAGES.cannotFindNamespaceURI(qualifiedName);
}
else
{
Element nsElement = el;
while (namespaceURI.equals("") && nsElement != null)
{
namespaceURI = nsElement.getAttribute("xmlns");
if (namespaceURI.equals(""))
nsElement = getParentElement(nsElement);
}
}
qname = new QName(namespaceURI, localPart, prefix);
return qname;
}
/** Get the value from the given attribute
*
* @return null if the attribute value is empty or the attribute is not present
*/
public static String getAttributeValue(Element el, String attrName)
{
return getAttributeValue(el, new QName(attrName));
}
/** Get the value from the given attribute
*
* @return null if the attribute value is empty or the attribute is not present
*/
public static String getAttributeValue(Element el, QName attrName)
{
String attr = null;
if ("".equals(attrName.getNamespaceURI()))
attr = el.getAttribute(attrName.getLocalPart());
else
attr = el.getAttributeNS(attrName.getNamespaceURI(), attrName.getLocalPart());
if ("".equals(attr))
attr = null;
return attr;
}
/** Get the qname value from the given attribute
*/
public static QName getAttributeValueAsQName(Element el, String attrName)
{
return getAttributeValueAsQName(el, new QName(attrName));
}
/** Get the qname value from the given attribute
*/
public static QName getAttributeValueAsQName(Element el, QName attrName)
{
QName qname = null;
String qualifiedName = getAttributeValue(el, attrName);
if (qualifiedName != null)
{
qname = resolveQName(el, qualifiedName);
}
return qname;
}
/** Get the boolean value from the given attribute
*/
public static boolean getAttributeValueAsBoolean(Element el, String attrName)
{
return getAttributeValueAsBoolean(el, new QName(attrName));
}
/** Get the boolean value from the given attribute
*/
public static boolean getAttributeValueAsBoolean(Element el, QName attrName)
{
String attrVal = getAttributeValue(el, attrName);
boolean ret = "true".equalsIgnoreCase(attrVal) || "1".equalsIgnoreCase(attrVal);
return ret;
}
/** Get the integer value from the given attribute
*/
public static Integer getAttributeValueAsInteger(Element el, String attrName)
{
return getAttributeValueAsInteger(el, new QName(attrName));
}
/** Get the integer value from the given attribute
*/
public static Integer getAttributeValueAsInteger(Element el, QName attrName)
{
String attrVal = getAttributeValue(el, attrName);
return (attrVal != null ? new Integer(attrVal) : null);
}
/** Get the attributes as Map
*/
public static Map getAttributes(Element el)
{
Map attmap = new HashMap();
NamedNodeMap attribs = el.getAttributes();
int len = attribs.getLength();
for (int i = 0; i < len; i++)
{
Attr attr = (Attr) attribs.item(i);
String name = attr.getName();
QName qname = resolveQName(el, name);
String value = attr.getNodeValue();
attmap.put(qname, value);
}
return attmap;
}
/** Copy attributes between elements
*/
public static void copyAttributes(Element destElement, Element srcElement)
{
NamedNodeMap attribs = srcElement.getAttributes();
int len = attribs.getLength();
for (int i = 0; i < len; i++)
{
Attr attr = (Attr) attribs.item(i);
String uri = attr.getNamespaceURI();
String qname = attr.getName();
String value = attr.getNodeValue();
// Prevent DOMException: NAMESPACE_ERR: An attempt is made to create or
// change an object in a way which is incorrect with regard to namespaces.
if (uri == null && qname.startsWith("xmlns"))
{
if (LOGGER.isTraceEnabled())
LOGGER.ignoringAttribute(uri, qname, value);
}
else
{
destElement.setAttributeNS(uri, qname, value);
}
}
}
/** True if the node has text child elements only
*/
public static boolean hasTextChildNodesOnly(Node node)
{
NodeList nodeList = node.getChildNodes();
int len = nodeList.getLength();
if (len == 0)
return false;
for (int i = 0; i < len; i++)
{
Node acksToChildNode = nodeList.item(i);
if (acksToChildNode.getNodeType() != Node.TEXT_NODE)
return false;
}
return true;
}
/** True if the node has child elements
*/
public static boolean hasChildElements(Node node)
{
NodeList nlist = node.getChildNodes();
int len = nlist.getLength();
for (int i = 0; i < len; i++)
{
Node child = nlist.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE)
return true;
}
return false;
}
/** Gets child elements
*/
public static Iterator getChildElements(Node node)
{
List list = new LinkedList();
NodeList nlist = node.getChildNodes();
int len = nlist.getLength();
for (int i = 0; i < len; i++)
{
Node child = nlist.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE)
list.add((Element) child);
}
return list.iterator();
}
/** Get the concatenated text content, or null.
*/
public static String getTextContent(Node node)
{
boolean hasTextContent = false;
StringBuilder buffer = new StringBuilder();
NodeList nlist = node.getChildNodes();
int len = nlist.getLength();
for (int i = 0; i < len; i++)
{
Node child = nlist.item(i);
if (child.getNodeType() == Node.TEXT_NODE)
{
buffer.append(child.getNodeValue());
hasTextContent = true;
}
}
return (hasTextContent ? buffer.toString() : null);
}
/** Gets the first child element
*/
public static Element getFirstChildElement(Node node)
{
return getFirstChildElement(node, false);
}
/** Gets the first child element
*/
public static Element getFirstChildElement(Node node, boolean recursive)
{
return getFirstChildElementIntern(node, null, recursive);
}
/** Gets the first child element for a given local name without namespace
*/
public static Element getFirstChildElement(Node node, String nodeName)
{
return getFirstChildElement(node, nodeName, false);
}
/** Gets the first child element for a given local name without namespace
*/
public static Element getFirstChildElement(Node node, String nodeName, boolean recursive)
{
return getFirstChildElementIntern(node, new QName(nodeName), recursive);
}
/** Gets the first child element for a given qname
*/
public static Element getFirstChildElement(Node node, QName nodeName)
{
return getFirstChildElement(node, nodeName, false);
}
/** Gets the first child element for a given qname
*/
public static Element getFirstChildElement(Node node, QName nodeName, boolean recursive)
{
return getFirstChildElementIntern(node, nodeName, recursive);
}
private static Element getFirstChildElementIntern(Node node, QName nodeName, boolean recursive)
{
Element childElement = null;
Iterator it = getChildElementsIntern(node, nodeName, recursive);
if (it.hasNext())
{
childElement = (Element) it.next();
}
return childElement;
}
/** Gets the child elements for a given local name without namespace
*/
public static Iterator getChildElements(Node node, String nodeName)
{
return getChildElements(node, nodeName, false);
}
/** Gets the child elements for a given local name without namespace
*/
public static Iterator getChildElements(Node node, String nodeName, boolean recursive)
{
return getChildElementsIntern(node, new QName(nodeName), recursive);
}
/** Gets the child element for a given qname
*/
public static Iterator getChildElements(Node node, QName nodeName)
{
return getChildElements(node, nodeName, false);
}
/** Gets the child element for a given qname
*/
public static Iterator getChildElements(Node node, QName nodeName, boolean recursive)
{
return getChildElementsIntern(node, nodeName, recursive);
}
public static List getChildElementsAsList(Node node, String nodeName)
{
return getChildElementsAsList(node, nodeName, false);
}
public static List getChildElementsAsList(Node node, String nodeName, boolean recursive)
{
return getChildElementsAsListIntern(node, new QName(nodeName), recursive);
}
public static List getChildElementsAsList(Node node, QName nodeName)
{
return getChildElementsAsList(node, nodeName, false);
}
public static List getChildElementsAsList(Node node, QName nodeName, boolean recursive)
{
return getChildElementsAsListIntern(node, nodeName, recursive);
}
private static List getChildElementsAsListIntern(Node node, QName nodeName, boolean recursive)
{
List list = new LinkedList();
NodeList nlist = node.getChildNodes();
int len = nlist.getLength();
for (int i = 0; i < len; i++)
{
Node child = nlist.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE)
{
search(list, (Element) child, nodeName, recursive);
}
}
return list;
}
private static void search(List list, Element baseElement, QName nodeName, boolean recursive)
{
if (nodeName == null)
{
list.add(baseElement);
}
else
{
QName qname;
if (nodeName.getNamespaceURI().length() > 0)
{
qname = new QName(baseElement.getNamespaceURI(), baseElement.getLocalName());
}
else
{
qname = new QName(baseElement.getLocalName());
}
if (qname.equals(nodeName))
{
list.add(baseElement);
}
}
if (recursive)
{
NodeList nlist = baseElement.getChildNodes();
int len = nlist.getLength();
for (int i = 0; i < len; i++)
{
Node child = nlist.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE)
{
search(list, (Element) child, nodeName, recursive);
}
}
}
}
private static Iterator getChildElementsIntern(Node node, QName nodeName, boolean recursive)
{
return getChildElementsAsListIntern(node, nodeName, recursive).iterator();
}
/** Gets parent element or null if there is none
*/
public static Element getParentElement(Node node)
{
Node parent = node.getParentNode();
return (parent instanceof Element ? (Element) parent : null);
}
public static Element sourceToElement(Source source, DocumentBuilder builder) throws IOException
{
Element retElement = null;
if (source instanceof StreamSource)
{
StreamSource streamSource = (StreamSource) source;
InputStream ins = streamSource.getInputStream();
if (ins != null)
{
retElement = DOMUtils.parse(ins, builder);
}
Reader reader = streamSource.getReader();
if (reader != null)
{
retElement = DOMUtils.parse(new InputSource(reader), builder);
}
}
else if (source instanceof DOMSource)
{
DOMSource domSource = (DOMSource) source;
Node node = domSource.getNode();
if (node instanceof Element)
{
retElement = (Element) node;
}
else if (node instanceof Document)
{
retElement = ((Document) node).getDocumentElement();
}
}
else if (source instanceof SAXSource)
{
// The fact that JAXBSource derives from SAXSource is an implementation detail.
// Thus in general applications are strongly discouraged from accessing methods defined on SAXSource.
// The XMLReader object obtained by the getXMLReader method shall be used only for parsing the InputSource object returned by the getInputSource method.
final boolean hasInputSource = ((SAXSource) source).getInputSource() != null;
final boolean hasXMLReader = ((SAXSource) source).getXMLReader() != null;
if (hasInputSource || hasXMLReader)
{
try
{
TransformerFactory tf = TransformerFactory.newInstance();
ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.transform(source, new StreamResult(baos));
retElement = DOMUtils.parse(new ByteArrayInputStream(baos.toByteArray()), builder);
}
catch (TransformerException ex)
{
throw new IOException(ex);
}
}
}
else
{
throw MESSAGES.sourceTypeNotImplemented(source.getClass());
}
return retElement;
}
/** Parse the given XML string and return the root Element
*/
public static Element parse(String xmlString, DocumentBuilder builder) throws IOException
{
try
{
return parse(new ByteArrayInputStream(xmlString.getBytes("UTF-8")), builder);
}
catch (IOException e)
{
LOGGER.cannotParse(xmlString);
throw e;
}
}
/** Parse the given XML stream and return the root Element
*/
public static Element parse(InputStream xmlStream, DocumentBuilder builder) throws IOException
{
try
{
Document doc;
synchronized (builder) //synchronize to prevent concurrent parsing on the same DocumentBuilder
{
doc = builder.parse(xmlStream);
}
return doc.getDocumentElement();
}
catch (SAXException se)
{
throw new IOException(se.toString());
}
finally
{
xmlStream.close();
}
}
/** Parse the given input source and return the root Element
*/
public static Element parse(InputSource source, DocumentBuilder builder) throws IOException
{
try
{
Document doc;
synchronized (builder) //synchronize to prevent concurrent parsing on the same DocumentBuilder
{
doc = builder.parse(source);
}
return doc.getDocumentElement();
}
catch (SAXException se)
{
throw new IOException(se.toString());
}
finally
{
InputStream is = source.getByteStream();
if (is != null)
{
is.close();
}
Reader r = source.getCharacterStream();
if (r != null)
{
r.close();
}
}
}
/** Create an Element for a given name, prefix and uri
*/
public static Element createElement(String localPart, String prefix, String uri, Document doc)
{
if (prefix == null || prefix.length() == 0)
{
if (LOGGER.isTraceEnabled())
LOGGER.creatingElement(uri, prefix);
return doc.createElementNS(uri, localPart);
}
else
{
if (LOGGER.isTraceEnabled())
LOGGER.creatingElement(uri, prefix, localPart);
return doc.createElementNS(uri, prefix + ":" + localPart);
}
}
}
