/* 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.activiti.engine.impl.el;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.delegate.VariableScope;
/**
* Expression that always returns the same value when <code>getValue</code> is
* called. Setting of the value is not supported.
*
* @author Frederik Heremans
*/
public class FixedValue implements Expression {
private Object value;
public FixedValue(Object value) {
this.value = value;
}
public Object getValue(VariableScope variableScope) {
return value;
}
public void setValue(Object value, VariableScope variableScope) {
throw new ActivitiException("Cannot change fixed value");
}
public String getExpressionText() {
return value.toString();
}
}