/*
* Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
*
* This software is open source.
* See the bottom of this file for the licence.
*/
package org.dom4j.xpath;
import java.util.
ArrayList;
import org.dom4j.
InvalidXPathException;
import org.dom4j.
Node;
import org.dom4j.
XPathException;
import org.jaxen.
Context;
import org.jaxen.
ContextSupport;
import org.jaxen.
JaxenException;
import org.jaxen.
SimpleNamespaceContext;
import org.jaxen.
SimpleVariableContext;
import org.jaxen.
VariableContext;
import org.jaxen.
XPathFunctionContext;
import org.jaxen.dom4j.
DocumentNavigator;
import org.jaxen.pattern.
Pattern;
import org.jaxen.pattern.
PatternParser;
import org.jaxen.saxpath.
SAXPathException;
/**
* <p>
* <code>XPathPattern</code> is an implementation of Pattern which uses an
* XPath xpath.
* </p>
*
* @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
* @version $Revision: 1.18.2.1 $
*/
public class
XPathPattern implements org.dom4j.rule.
Pattern {
private
String text;
private
Pattern pattern;
private
Context context;
public
XPathPattern(
Pattern pattern) {
this.
pattern =
pattern;
this.
text =
pattern.
getText();
this.
context = new
Context(
getContextSupport());
}
public
XPathPattern(
String text) {
this.
text =
text;
this.
context = new
Context(
getContextSupport());
try {
this.
pattern =
PatternParser.
parse(
text);
} catch (
SAXPathException e) {
throw new
InvalidXPathException(
text,
e.
getMessage());
} catch (
Throwable t) {
throw new
InvalidXPathException(
text,
t);
}
}
public boolean
matches(
Node node) {
try {
ArrayList list = new
ArrayList(1);
list.
add(
node);
context.
setNodeSet(
list);
return
pattern.
matches(
node,
context);
} catch (
JaxenException e) {
handleJaxenException(
e);
return false;
}
}
public
String getText() {
return
text;
}
public double
getPriority() {
return
pattern.
getPriority();
}
public org.dom4j.rule.
Pattern[]
getUnionPatterns() {
Pattern[]
patterns =
pattern.
getUnionPatterns();
if (
patterns != null) {
int
size =
patterns.length;
XPathPattern[]
answer = new
XPathPattern[
size];
for (int
i = 0;
i <
size;
i++) {
answer[
i] = new
XPathPattern(
patterns[
i]);
}
return
answer;
}
return null;
}
public short
getMatchType() {
return
pattern.
getMatchType();
}
public
String getMatchesNodeName() {
return
pattern.
getMatchesNodeName();
}
public void
setVariableContext(
VariableContext variableContext) {
context.
getContextSupport().
setVariableContext(
variableContext);
}
public
String toString() {
return "[XPathPattern: text: " +
text + " Pattern: " +
pattern + "]";
}
protected
ContextSupport getContextSupport() {
return new
ContextSupport(new
SimpleNamespaceContext(),
XPathFunctionContext.
getInstance(),
new
SimpleVariableContext(),
DocumentNavigator.
getInstance());
}
protected void
handleJaxenException(
JaxenException exception)
throws
XPathException {
throw new
XPathException(
text,
exception);
}
}
/*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "DOM4J" must not be used to endorse or promote products derived
* from this Software without prior written permission of MetaStuff, Ltd. For
* written permission, please contact dom4j-info@metastuff.com.
*
* 4. Products derived from this Software may not be called "DOM4J" nor may
* "DOM4J" appear in their names without prior written permission of MetaStuff,
* Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
*
* 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
*
* THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
*/