/*
* 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: ConditionFactory.java 473861 2006-11-12 03:51:14Z gregor $ */
package org.apache.lenya.workflow.impl;
import org.apache.avalon.framework.container.ContainerUtil;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.logger.Logger;
import org.apache.lenya.workflow.Condition;
import org.apache.lenya.workflow.WorkflowException;
/**
* Factory to build conditions.
*/
public final class ConditionFactory extends AbstractLogEnabled {
/**
* Ctor.
* @param logger The logger to use.
*/
public ConditionFactory(Logger logger) {
ContainerUtil.enableLogging(this, logger);
}
/**
* Creates a condition.
* @param className The condition class name.
* @param expression The condition expression.
* @return A condition.
* @throws WorkflowException when creating the condition failed.
*/
protected Condition createCondition(String className, String expression)
throws WorkflowException {
Condition condition;
try {
Class clazz = Class.forName(className);
condition = (Condition) clazz.newInstance();
ContainerUtil.enableLogging(condition, getLogger());
condition.setExpression(expression);
} catch (ClassNotFoundException e) {
throw new WorkflowException(e);
} catch (InstantiationException e) {
throw new WorkflowException(e);
} catch (IllegalAccessException e) {
throw new WorkflowException(e);
}
return condition;
}
}