/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
package org.apache.commons.jxpath.ri.compiler;
import org.apache.commons.jxpath.ri.EvalContext;
import org.apache.commons.jxpath.ri.axes.InitialContext;
/**
* @author Dmitri Plotnikov
* @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
*/
public class LocationPath extends Path {
private boolean absolute;
/**
* Create a new LocationPath.
* @param absolute whether this is an absolute path
* @param steps to evaluate
*/
public LocationPath(boolean absolute, Step[] steps) {
super(steps);
this.absolute = absolute;
}
/**
* Learn whether this LocationPath is absolute.
* @return boolean
*/
public boolean isAbsolute() {
return absolute;
}
public boolean computeContextDependent() {
return !absolute || super.computeContextDependent();
}
public String toString() {
StringBuffer buffer = new StringBuffer();
Step[] steps = getSteps();
if (steps != null) {
for (int i = 0; i < steps.length; i++) {
if (i > 0 || absolute) {
buffer.append('/');
}
buffer.append(steps[i]);
}
}
return buffer.toString();
}
public Object compute(EvalContext context) {
// Create a chain of contexts
EvalContext rootContext;
if (isAbsolute()) {
rootContext = context.getRootContext().getAbsoluteRootContext();
}
else {
rootContext = new InitialContext(context);
}
return evalSteps(rootContext);
}
public Object computeValue(EvalContext context) {
// Create a chain of contexts
EvalContext rootContext;
if (isAbsolute()) {
rootContext = context.getRootContext().getAbsoluteRootContext();
}
else {
rootContext = new InitialContext(context);
}
return getSingleNodePointerForSteps(rootContext);
}
}