/*
* 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.
*
*/
/* $Id: BooleanVariableCondition.java 473861 2006-11-12 03:51:14Z gregor $ */
package org.apache.lenya.workflow.impl;
import org.apache.lenya.workflow.Version;
import org.apache.lenya.workflow.Workflow;
import org.apache.lenya.workflow.WorkflowException;
import org.apache.lenya.workflow.Workflowable;
/**
* Implementation of a boolean variable condition.
*/
public class BooleanVariableCondition extends AbstractCondition {
private String variableName;
private boolean value;
/**
* Returns the variable value to check.
* @return A boolean value.
*/
protected boolean getValue() {
return this.value;
}
/**
* Returns the variable name to check.
* @return A string.
*/
protected String getVariableName() {
return this.variableName;
}
/**
* @see org.apache.lenya.workflow.Condition#setExpression(java.lang.String)
*/
public void setExpression(String expression) throws WorkflowException {
super.setExpression(expression);
String[] sides = expression.split("=");
if (sides.length != 2) {
throw new WorkflowException("The expression '" + expression
+ "' must be of the form 'name = [true|false]'");
}
this.variableName = sides[0].trim();
this.value = Boolean.valueOf(sides[1].trim()).booleanValue();
if (getLogger().isDebugEnabled()) {
getLogger().debug("Expression: [" + sides[1].trim() + "]");
getLogger().debug("Setting value: [" + this.value + "]");
}
}
/**
* @see org.apache.lenya.workflow.Condition#isComplied(org.apache.lenya.workflow.Workflow,
* org.apache.lenya.workflow.Workflowable)
*/
public boolean isComplied(Workflow workflow, Workflowable workflowable)
throws WorkflowException {
Version latestVersion = workflowable.getLatestVersion();
boolean value = false;
if (latestVersion == null) {
value = workflow.getInitialValue(getVariableName());
} else {
value = latestVersion.getValue(getVariableName());
}
if (getLogger().isDebugEnabled()) {
getLogger().debug("Checking boolean variable condition");
getLogger().debug(" Condition value: [" + getValue() + "]");
getLogger().debug(" Variable value: [" + value + "]");
}
return value == getValue();
}
}