/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/**
*
* @author $Author: mullan $
*/
public class CachedXPathFuncHereAPI {
/**
* XPathContext, and thus DTMManager and DTMs, persists through multiple
* calls to this object.
*/
/** Field _dtmManager */
static {
}
/**
* Method getFuncHereContext
* @return the context for this object
*
*/
return this._funcHereContext;
}
/**
* Constructor CachedXPathFuncHereAPI
*
*/
private CachedXPathFuncHereAPI() {}
/**
* Constructor CachedXPathFuncHereAPI
*
* @param existingXPathContext
*/
this._context=existingXPathContext;
}
/**
* Constructor CachedXPathFuncHereAPI
*
* @param previouslyUsed
*/
}
/**
* Use an XPath string to select a single node. XPath namespace
* prefixes are resolved from the context node, which may not
* be what you want (see the next method).
*
* @param contextNode The node to start searching from.
* @param xpathnode A Node containing a valid XPath string.
* @return The first node found that matches the XPath, or null.
*
* @throws TransformerException
*/
throws TransformerException {
}
/**
* Use an XPath string to select a single node.
* XPath namespace prefixes are resolved from the namespaceNode.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
* @return The first node found that matches the XPath, or null.
*
* @throws TransformerException
*/
throws TransformerException {
// Have the XObject return its result as a NodeSetDTM.
// Return the first node, or null
}
/**
* Use an XPath string to select a nodelist.
* XPath namespace prefixes are resolved from the contextNode.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @return A NodeIterator, should never be null.
*
* @throws TransformerException
*/
throws TransformerException {
}
/**
* Use an XPath string to select a nodelist.
* XPath namespace prefixes are resolved from the namespaceNode.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
* @return A NodeIterator, should never be null.
*
* @throws TransformerException
* @deprecated
*/
throws TransformerException {
// Execute the XPath, and have it return the result
// Have the XObject return its result as a NodeSetDTM.
}
/**
* Use an XPath string to select a nodelist.
* XPath namespace prefixes are resolved from the contextNode.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @return A NodeIterator, should never be null.
*
* @throws TransformerException
* @deprecated
*/
throws TransformerException {
}
/**
* Use an XPath string to select a nodelist.
* XPath namespace prefixes are resolved from the namespaceNode.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param str
* @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
* @return A NodeIterator, should never be null.
*
* @throws TransformerException
*/
throws TransformerException {
// Execute the XPath, and have it return the result
// Return a NodeList.
}
/**
* Evaluate XPath string to an XObject. Using this method,
* XPath namespace prefixes will be resolved from the namespaceNode.
* @param contextNode The node to start searching from.
* @param xpathnode
* @return An XObject, which can be used to obtain a string, number, nodelist, etc, should never be null.
* @see com.sun.org.apache.xpath.internal.objects.XObject
* @see com.sun.org.apache.xpath.internal.objects.XNull
* @see com.sun.org.apache.xpath.internal.objects.XBoolean
* @see com.sun.org.apache.xpath.internal.objects.XNumber
* @see com.sun.org.apache.xpath.internal.objects.XString
* @see com.sun.org.apache.xpath.internal.objects.XRTreeFrag
*
* @throws TransformerException
* @deprecated
*/
throws TransformerException {
}
/**
* Evaluate XPath string to an XObject.
* XPath namespace prefixes are resolved from the namespaceNode.
* The implementation of this is a little slow, since it creates
* a number of objects each time it is called. This could be optimized
* to keep the same objects around, but then thread-safety issues would arise.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param str
* @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
* @return An XObject, which can be used to obtain a string, number, nodelist, etc, should never be null.
* @see com.sun.org.apache.xpath.internal.objects.XObject
* @see com.sun.org.apache.xpath.internal.objects.XNull
* @see com.sun.org.apache.xpath.internal.objects.XBoolean
* @see com.sun.org.apache.xpath.internal.objects.XNumber
* @see com.sun.org.apache.xpath.internal.objects.XString
* @see com.sun.org.apache.xpath.internal.objects.XRTreeFrag
*
* @throws TransformerException
*/
throws TransformerException {
// Create the XPath object.
//String str = CachedXPathFuncHereAPI.getStrFromNode(xpathnode);
// Since we don't have a XML Parser involved here, install some default support
// for things like namespaces, etc.
// (Changed from: XPathContext xpathSupport = new XPathContext();
// because XPathContext is weak in a number of areas... perhaps
// XPathContext should be done away with.)
if (this._funcHereContext == null) {
this._dtmManager);
}
// Create an object to resolve namespace prefixes.
// XPath namespaces are resolved from the input context node's document element
// if it is a root node, or else the current context node (for lack of a better
// resolution space, given the simplicity of this sample code).
== Node.DOCUMENT_NODE)
? ((Document) namespaceNode)
: namespaceNode);
// only check if string points to different object (for performance)
}
}
// Execute the XPath, and have it return the result
// return xpath.execute(xpathSupport, contextNode, prefixResolver);
}
/**
* Evaluate XPath string to an XObject.
* XPath namespace prefixes are resolved from the namespaceNode.
* The implementation of this is a little slow, since it creates
* a number of objects each time it is called. This could be optimized
* to keep the same objects around, but then thread-safety issues would arise.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param str
* @param prefixResolver Will be called if the parser encounters namespace
* prefixes, to resolve the prefixes to URLs.
* @return An XObject, which can be used to obtain a string, number, nodelist, etc, should never be null.
* @see com.sun.org.apache.xpath.internal.objects.XObject
* @see com.sun.org.apache.xpath.internal.objects.XNull
* @see com.sun.org.apache.xpath.internal.objects.XBoolean
* @see com.sun.org.apache.xpath.internal.objects.XNumber
* @see com.sun.org.apache.xpath.internal.objects.XString
* @see com.sun.org.apache.xpath.internal.objects.XRTreeFrag
*
* @throws TransformerException
*/
throws TransformerException {
// Since we don't have a XML Parser involved here, install some default support
// for things like namespaces, etc.
// (Changed from: XPathContext xpathSupport = new XPathContext();
// because XPathContext is weak in a number of areas... perhaps
// XPathContext should be done away with.)
// Create the XPath object.
//String str = CachedXPathFuncHereAPI.getStrFromNode(xpathnode);
// only check if string points to different object (for performance)
}
try {
} catch (TransformerException ex) {
//Try to see if it is a problem with the classloader.
if (th instanceof ClassNotFoundException) {
}
}
throw ex;
}
}
// Execute the XPath, and have it return the result
if (this._funcHereContext == null) {
this._dtmManager);
}
}
ErrorListener.class, FunctionTable.class};
Object[] objects = new Object[]{str, null, prefixResolver, new Integer(XPath.SELECT), null, _funcTable};
try {
} catch (Throwable t) {
}
}
return xpath;
}
/**
* Method getStrFromNode
*
* @param xpathnode
* @return the string for the node.
*/
// we iterate over all siblings of the context node because eventually,
// the text is "polluted" with pi's or comments
currentSibling != null;
}
}
}
return null;
}
private static void fixupFunctionTable() {
boolean installed = false;
/**
* Try to register our here() implementation as internal function.
*/
try {
installed = true;
}
} catch (Throwable t) {
log.log(java.util.logging.Level.FINE, "Error installing function using the static installFunction method", t);
}
if(!installed) {
try {
_funcTable = new FunctionTable();
installed = true;
} catch (Throwable t) {
log.log(java.util.logging.Level.FINE, "Error installing function using the static installFunction method", t);
}
}
if (installed) {
+ " for XPath function 'here()' function in internal table");
} else {
+ " for XPath function 'here()' function in internal table");
}
}
}
}