io.atlasmap.expression.internal.VariableExpression Maven / Gradle / Ivy
/**
* 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 io.atlasmap.expression.internal;
import io.atlasmap.expression.Expression;
import io.atlasmap.expression.ExpressionContext;
import io.atlasmap.expression.ExpressionException;
/**
* Represents a property expression
*
* @version $Revision: 1.5 $
*/
public class VariableExpression implements Expression {
private final String name;
public VariableExpression(String name) {
this.name = name;
}
public Object evaluate(ExpressionContext expressionContext) throws ExpressionException {
return expressionContext.getVariable(name);
}
public String getName() {
return name;
}
/**
* @see java.lang.Object#toString()
*/
public String toString() {
return "${" + name + "}";
}
/**
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
return name.hashCode();
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object o) {
if (o == null || !this.getClass().equals(o.getClass())) {
return false;
}
return name.equals(((VariableExpression) o).name);
}
}