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Posted to woden-dev@ws.apache.org by jk...@apache.org on 2005/09/28 14:49:43 UTC
svn commit: r292168 - in
/incubator/woden/java/src/org/apache/woden/internal/util/dom:
DOM2Writer.java XPathUtils.java
Author: jkaputin
Date: Wed Sep 28 05:49:36 2005
New Revision: 292168
URL: http://svn.apache.org/viewcvs?rev=292168&view=rev
Log:
Utility classes from WSDL4J.
Added:
incubator/woden/java/src/org/apache/woden/internal/util/dom/DOM2Writer.java
incubator/woden/java/src/org/apache/woden/internal/util/dom/XPathUtils.java
Added: incubator/woden/java/src/org/apache/woden/internal/util/dom/DOM2Writer.java
URL: http://svn.apache.org/viewcvs/incubator/woden/java/src/org/apache/woden/internal/util/dom/DOM2Writer.java?rev=292168&view=auto
==============================================================================
--- incubator/woden/java/src/org/apache/woden/internal/util/dom/DOM2Writer.java (added)
+++ incubator/woden/java/src/org/apache/woden/internal/util/dom/DOM2Writer.java Wed Sep 28 05:49:36 2005
@@ -0,0 +1,426 @@
+/*
+ * (c) Copyright IBM Corp 2001, 2005
+ */
+
+package org.apache.woden.internal.util.dom;
+
+import java.io.*;
+import java.util.*;
+import org.w3c.dom.*;
+import com.ibm.wsdl.*;
+import com.ibm.wsdl.util.*;
+
+/**
+ * This class is a utility to serialize a DOM node as XML. This class
+ * uses the <code>DOM Level 2</code> APIs.
+ * The main difference between this class and DOMWriter is that this class
+ * generates and prints out namespace declarations.
+ *
+ * @author Matthew J. Duftler (duftler@us.ibm.com)
+ * @author Joseph Kesselman
+ */
+public class DOM2Writer
+{
+ /**
+ * The namespaceURI represented by the prefix <code>xmlns</code>.
+ */
+ private static String NS_URI_XMLNS = "http://www.w3.org/2000/xmlns/";
+
+ /**
+ * The namespaceURI represented by the prefix <code>xml</code>.
+ */
+ private static String NS_URI_XML = "http://www.w3.org/XML/1998/namespace";
+
+ private static Map xmlEncodingMap = new HashMap();
+
+ static
+ {
+ xmlEncodingMap.put(null, Constants.XML_DECL_DEFAULT);
+ xmlEncodingMap.put(System.getProperty("file.encoding"),
+ Constants.XML_DECL_DEFAULT);
+ xmlEncodingMap.put("UTF8", "UTF-8");
+ xmlEncodingMap.put("UTF-16", "UTF-16");
+ xmlEncodingMap.put("UnicodeBig", "UTF-16");
+ xmlEncodingMap.put("UnicodeLittle", "UTF-16");
+ xmlEncodingMap.put("ASCII", "US-ASCII");
+ xmlEncodingMap.put("ISO8859_1", "ISO-8859-1");
+ xmlEncodingMap.put("ISO8859_2", "ISO-8859-2");
+ xmlEncodingMap.put("ISO8859_3", "ISO-8859-3");
+ xmlEncodingMap.put("ISO8859_4", "ISO-8859-4");
+ xmlEncodingMap.put("ISO8859_5", "ISO-8859-5");
+ xmlEncodingMap.put("ISO8859_6", "ISO-8859-6");
+ xmlEncodingMap.put("ISO8859_7", "ISO-8859-7");
+ xmlEncodingMap.put("ISO8859_8", "ISO-8859-8");
+ xmlEncodingMap.put("ISO8859_9", "ISO-8859-9");
+ xmlEncodingMap.put("ISO8859_13", "ISO-8859-13");
+ xmlEncodingMap.put("ISO8859_15_FDIS", "ISO-8859-15");
+ xmlEncodingMap.put("GBK", "GBK");
+ xmlEncodingMap.put("Big5", "Big5");
+ }
+
+ /**
+ * Return a string containing this node serialized as XML.
+ */
+ public static String nodeToString(Node node)
+ {
+ StringWriter sw = new StringWriter();
+
+ serializeAsXML(node, sw);
+
+ return sw.toString();
+ }
+
+
+ /**
+ * Print an XML declaration before serializing the element.
+ */
+ public static void serializeElementAsDocument(Element el, Writer writer)
+ {
+ PrintWriter pw = new PrintWriter(writer);
+ String javaEncoding = (writer instanceof OutputStreamWriter)
+ ? ((OutputStreamWriter) writer).getEncoding()
+ : null;
+
+ String xmlEncoding = java2XMLEncoding(javaEncoding);
+
+ if (xmlEncoding != null)
+ {
+ pw.println(Constants.XML_DECL_START +
+ xmlEncoding +
+ Constants.XML_DECL_END);
+ }
+ else
+ {
+ pw.println("<?xml version=\"1.0\"?>");
+ }
+
+ serializeAsXML(el, writer);
+ }
+
+ /**
+ * Serialize this node into the writer as XML.
+ */
+ public static void serializeAsXML(Node node, Writer writer)
+ {
+ ObjectRegistry namespaceStack = new ObjectRegistry();
+
+ namespaceStack.register("xml", NS_URI_XML);
+
+ PrintWriter pw = new PrintWriter(writer);
+ String javaEncoding = (writer instanceof OutputStreamWriter)
+ ? ((OutputStreamWriter) writer).getEncoding()
+ : null;
+
+ print(node, namespaceStack, pw, java2XMLEncoding(javaEncoding));
+ }
+
+ private static void print(Node node, ObjectRegistry namespaceStack,
+ PrintWriter out, String xmlEncoding)
+ {
+ if (node == null)
+ {
+ return;
+ }
+
+ boolean hasChildren = false;
+ int type = node.getNodeType();
+
+ switch (type)
+ {
+ case Node.DOCUMENT_NODE :
+ {
+ if (xmlEncoding != null)
+ {
+ out.println(Constants.XML_DECL_START +
+ xmlEncoding +
+ Constants.XML_DECL_END);
+ }
+ else
+ {
+ out.println("<?xml version=\"1.0\"?>");
+ }
+
+ NodeList children = node.getChildNodes();
+
+ if (children != null)
+ {
+ int numChildren = children.getLength();
+
+ for (int i = 0; i < numChildren; i++)
+ {
+ print(children.item(i), namespaceStack, out, xmlEncoding);
+ }
+ }
+ break;
+ }
+
+ case Node.ELEMENT_NODE :
+ {
+ namespaceStack = new ObjectRegistry(namespaceStack);
+
+ out.print('<' + node.getNodeName());
+
+ String elPrefix = node.getPrefix();
+ String elNamespaceURI = node.getNamespaceURI();
+
+ if (elPrefix != null && elNamespaceURI != null)
+ {
+ boolean prefixIsDeclared = false;
+
+ try
+ {
+ String namespaceURI = (String)namespaceStack.lookup(elPrefix);
+
+ if (elNamespaceURI.equals(namespaceURI))
+ {
+ prefixIsDeclared = true;
+ }
+ }
+ catch (IllegalArgumentException e)
+ {
+ // ignore this and carry on
+ }
+
+ if (!prefixIsDeclared)
+ {
+ printNamespaceDecl(node, namespaceStack, out);
+ }
+ }
+
+ NamedNodeMap attrs = node.getAttributes();
+ int len = (attrs != null) ? attrs.getLength() : 0;
+
+ for (int i = 0; i < len; i++)
+ {
+ Attr attr = (Attr)attrs.item(i);
+
+ out.print(' ' + attr.getNodeName() +"=\"" +
+ normalize(attr.getValue()) + '\"');
+
+ String attrPrefix = attr.getPrefix();
+ String attrNamespaceURI = attr.getNamespaceURI();
+
+ if (attrPrefix != null && attrNamespaceURI != null)
+ {
+ boolean prefixIsDeclared = false;
+
+ try
+ {
+ String namespaceURI = (String)namespaceStack.lookup(attrPrefix);
+
+ if (attrNamespaceURI.equals(namespaceURI))
+ {
+ prefixIsDeclared = true;
+ }
+ }
+ catch (IllegalArgumentException e)
+ {
+ // ignore this and carry on
+ }
+
+ if (!prefixIsDeclared)
+ {
+ printNamespaceDecl(attr, namespaceStack, out);
+ }
+ }
+ }
+
+ NodeList children = node.getChildNodes();
+
+ if (children != null)
+ {
+ int numChildren = children.getLength();
+
+ hasChildren = (numChildren > 0);
+
+ if (hasChildren)
+ {
+ out.print('>');
+ }
+
+ for (int i = 0; i < numChildren; i++)
+ {
+ print(children.item(i), namespaceStack, out, xmlEncoding);
+ }
+ }
+ else
+ {
+ hasChildren = false;
+ }
+
+ if (!hasChildren)
+ {
+ out.print("/>");
+ }
+ break;
+ }
+
+ case Node.ENTITY_REFERENCE_NODE :
+ {
+ out.print('&');
+ out.print(node.getNodeName());
+ out.print(';');
+ break;
+ }
+
+ case Node.CDATA_SECTION_NODE :
+ {
+ out.print("<![CDATA[");
+ out.print(node.getNodeValue());
+ out.print("]]>");
+ break;
+ }
+
+ case Node.TEXT_NODE :
+ {
+ out.print(normalize(node.getNodeValue()));
+ break;
+ }
+
+ case Node.COMMENT_NODE :
+ {
+ out.print("<!--");
+ out.print(node.getNodeValue());
+ out.print("-->");
+ break;
+ }
+
+ case Node.PROCESSING_INSTRUCTION_NODE :
+ {
+ out.print("<?");
+ out.print(node.getNodeName());
+
+ String data = node.getNodeValue();
+
+ if (data != null && data.length() > 0)
+ {
+ out.print(' ');
+ out.print(data);
+ }
+
+ out.println("?>");
+ break;
+ }
+ }
+
+ if (type == Node.ELEMENT_NODE && hasChildren == true)
+ {
+ out.print("</");
+ out.print(node.getNodeName());
+ out.print('>');
+ hasChildren = false;
+ }
+ }
+
+ public static String java2XMLEncoding(String javaEnc)
+ {
+ return (String)xmlEncodingMap.get(javaEnc);
+ }
+
+
+ private static void printNamespaceDecl(Node node,
+ ObjectRegistry namespaceStack,
+ PrintWriter out)
+ {
+ switch (node.getNodeType())
+ {
+ case Node.ATTRIBUTE_NODE :
+ {
+ printNamespaceDecl(((Attr)node).getOwnerElement(), node,
+ namespaceStack, out);
+ break;
+ }
+
+ case Node.ELEMENT_NODE :
+ {
+ printNamespaceDecl((Element)node, node, namespaceStack, out);
+ break;
+ }
+ }
+ }
+
+ private static void printNamespaceDecl(Element owner, Node node,
+ ObjectRegistry namespaceStack,
+ PrintWriter out)
+ {
+ String namespaceURI = node.getNamespaceURI();
+ String prefix = node.getPrefix();
+
+ if (!(namespaceURI.equals(NS_URI_XMLNS) && prefix.equals("xmlns")))
+ {
+ if (DOMUtils.getAttributeNS(owner, NS_URI_XMLNS, prefix) == null)
+ {
+ out.print(" xmlns:" + prefix + "=\"" + namespaceURI + '\"');
+ }
+ }
+ else
+ {
+ prefix = node.getLocalName();
+ namespaceURI = node.getNodeValue();
+ }
+
+ namespaceStack.register(prefix, namespaceURI);
+ }
+
+ private static String normalize(String s)
+ {
+ StringBuffer str = new StringBuffer();
+ int len = (s != null) ? s.length() : 0;
+
+ for (int i = 0; i < len; i++)
+ {
+ char ch = s.charAt(i);
+
+ switch (ch)
+ {
+ case '<' :
+ {
+ str.append("<");
+ break;
+ }
+ case '>' :
+ {
+ str.append(">");
+ break;
+ }
+ case '&' :
+ {
+ str.append("&");
+ break;
+ }
+ case '"' :
+ {
+ str.append(""");
+ break;
+ }
+ case '\n' :
+ {
+ if (i > 0)
+ {
+ char lastChar = str.charAt(str.length() - 1);
+
+ if (lastChar != '\r')
+ {
+ str.append(StringUtils.lineSeparator);
+ }
+ else
+ {
+ str.append('\n');
+ }
+ }
+ else
+ {
+ str.append(StringUtils.lineSeparator);
+ }
+ break;
+ }
+ default :
+ {
+ str.append(ch);
+ }
+ }
+ }
+
+ return (str.toString());
+ }
+}
\ No newline at end of file
Added: incubator/woden/java/src/org/apache/woden/internal/util/dom/XPathUtils.java
URL: http://svn.apache.org/viewcvs/incubator/woden/java/src/org/apache/woden/internal/util/dom/XPathUtils.java?rev=292168&view=auto
==============================================================================
--- incubator/woden/java/src/org/apache/woden/internal/util/dom/XPathUtils.java (added)
+++ incubator/woden/java/src/org/apache/woden/internal/util/dom/XPathUtils.java Wed Sep 28 05:49:36 2005
@@ -0,0 +1,197 @@
+/*
+ * (c) Copyright IBM Corp 2001, 2005
+ */
+
+package org.apache.woden.internal.util.dom;
+
+import java.util.Vector;
+import org.w3c.dom.*;
+
+/**
+ * A <code>XPathUtils</code> ...
+ *
+ * @author Matthew J. Duftler (duftler@us.ibm.com)
+ * @author Sanjiva Weerawarana (sanjiva@watson.ibm.com)
+ */
+public class XPathUtils
+{
+ private static Node getPreviousTypedNode(Node node, short nodeType)
+ {
+ node = node.getPreviousSibling();
+
+ while (node != null && node.getNodeType() != nodeType)
+ {
+ node = node.getPreviousSibling();
+ }
+
+ return node;
+ }
+
+ private static Node getNextTypedNode(Node node, short nodeType)
+ {
+ node = node.getNextSibling();
+
+ while (node != null && node.getNodeType() != nodeType)
+ {
+ node = node.getNextSibling();
+ }
+
+ return node;
+ }
+
+ private static String getValue(Node node, short nodeType)
+ {
+ switch (nodeType)
+ {
+ case Node.ELEMENT_NODE :
+ return ((Element)node).getTagName();
+
+ case Node.TEXT_NODE :
+ return ((Text)node).getData();
+
+ case Node.PROCESSING_INSTRUCTION_NODE :
+ return ((ProcessingInstruction)node).getData();
+
+ default :
+ return "";
+ }
+ }
+
+ private static short getNodeType(Node node)
+ {
+ return (node != null ? node.getNodeType() : -1);
+ }
+
+ private static String getXPathFromVector(Vector path)
+ {
+ StringBuffer strBuf = new StringBuffer();
+ int length = path.size();
+
+ for (int i = 0; i < length; i++)
+ {
+ Node tempNode = (Node)path.elementAt(i);
+ short nodeType = getNodeType(tempNode);
+ String targetValue = getValue(tempNode, nodeType);
+ int position = 1;
+
+ tempNode = getPreviousTypedNode(tempNode, nodeType);
+
+ while (tempNode != null)
+ {
+ if (nodeType == Node.ELEMENT_NODE)
+ {
+ if (getValue(tempNode, nodeType).equals(targetValue))
+ {
+ position++;
+ }
+ }
+ else
+ {
+ position++;
+ }
+
+ tempNode = getPreviousTypedNode(tempNode, nodeType);
+ }
+
+ boolean hasMatchingSiblings = (position > 1);
+
+ if (!hasMatchingSiblings)
+ {
+ tempNode = (Node)path.elementAt(i);
+ tempNode = getNextTypedNode(tempNode, nodeType);
+
+ while (!hasMatchingSiblings && tempNode != null)
+ {
+ if (nodeType == Node.ELEMENT_NODE)
+ {
+ if (getValue(tempNode, nodeType).equals(targetValue))
+ {
+ hasMatchingSiblings = true;
+ }
+ else
+ {
+ tempNode = getNextTypedNode(tempNode, nodeType);
+ }
+ }
+ else
+ {
+ hasMatchingSiblings = true;
+ }
+ }
+ }
+
+ String step;
+
+ switch (nodeType)
+ {
+ case Node.TEXT_NODE :
+ step = "text()";
+ break;
+ case Node.PROCESSING_INSTRUCTION_NODE :
+ step = "processing-instruction()";
+ break;
+ default :
+ step = targetValue;
+ break;
+ }
+
+ if (step != null && step.length() > 0)
+ {
+ strBuf.append('/' + step);
+ }
+
+ if (hasMatchingSiblings)
+ {
+ strBuf.append("[" + position + "]");
+ }
+ }
+
+ return strBuf.toString();
+ }
+
+ private static Vector getVectorPathFromNode(Node node)
+ {
+ Vector path = new Vector();
+
+ while (node != null)
+ {
+ path.insertElementAt(node, 0);
+ node = node.getParentNode();
+ }
+
+ return path;
+ }
+
+ /**
+ * Generates an XPath expression that will return only the given node as its
+ * result. This method only works for element, text, document and PI nodes.
+ *
+ * @param node the node to generate an XPath expression for. This node must
+ * be an element node, a text node, a document node, or a processing
+ * instruction node.
+ * @return an XPath expression that will return only the given node as its
+ * result.
+ * @exception IllegalArgumentException if the given node is not an element,
+ * text, document or PI node.
+ */
+ public static String getXPathExprFromNode(Node node)
+ throws IllegalArgumentException
+ {
+ short nodeType = getNodeType(node);
+
+ switch (nodeType)
+ {
+ case Node.ELEMENT_NODE :
+ case Node.TEXT_NODE :
+ case Node.PROCESSING_INSTRUCTION_NODE :
+ return getXPathFromVector(getVectorPathFromNode(node));
+
+ case Node.DOCUMENT_NODE :
+ return "/";
+
+ default :
+ throw new IllegalArgumentException("Only works for element, text, " +
+ "document, and PI nodes.");
+ }
+ }
+}
\ No newline at end of file
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