- /*
- * 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
- *
- * 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.QName;
- import org.apache.commons.jxpath.ri.EvalContext;
-
- /**
- * An element of the compile tree holding a variable reference.
- *
- * @author Dmitri Plotnikov
- * @version $Revision: 1.9 $ $Date: 2004/02/29 14:17:38 $
- */
- public class VariableReference extends Expression {
-
- private QName varName;
-
- public VariableReference(QName varName) {
- this.varName = varName;
- }
-
- public QName getVariableName() {
- return varName;
- }
-
- public String toString() {
- return "$" + varName;
- }
-
- public boolean isContextDependent() {
- return false;
- }
-
- public boolean computeContextDependent() {
- return false;
- }
-
- public Object compute(EvalContext context) {
- return computeValue(context);
- }
-
- /**
- * Returns the value of the variable.
- */
- public Object computeValue(EvalContext context) {
- return context.getRootContext().getVariableContext(varName);
- }
- }