cz.wicketstuff.boss.flow.processor.basic.AbstractFlowStateProcessor Maven / Gradle / Ivy

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Workflow control and configuration java framework
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/*
 * 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 cz.wicketstuff.boss.flow.processor.basic;

import java.io.Serializable;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import cz.wicketstuff.boss.flow.FlowException;
import cz.wicketstuff.boss.flow.model.IFlowCarter;
import cz.wicketstuff.boss.flow.model.IFlowConditionState;
import cz.wicketstuff.boss.flow.model.IFlowJoinState;
import cz.wicketstuff.boss.flow.model.IFlowRealState;
import cz.wicketstuff.boss.flow.model.IFlowState;
import cz.wicketstuff.boss.flow.model.IFlowSwitchState;
import cz.wicketstuff.boss.flow.model.IFlowViewState;
import cz.wicketstuff.boss.flow.model.IFlowVirtualState;
import cz.wicketstuff.boss.flow.processor.IFlowProcessor;
import cz.wicketstuff.boss.flow.processor.IFlowStateComplexProcessor;

public abstract class AbstractFlowStateProcessor implements IFlowStateComplexProcessor, Serializable {

	private static final long serialVersionUID = 1L;
	
	private final static Logger log = LoggerFactory.getLogger(AbstractFlowStateProcessor.class);
	
	private IFlowProcessor flowProcessor;
	
	public AbstractFlowStateProcessor() {
		this(null);
	}
	
	public AbstractFlowStateProcessor(IFlowProcessor flowProcessor) {
		this.flowProcessor = flowProcessor;
	}

	@Override
	public void processState(IFlowCarter flow) throws FlowException {
		IFlowState state = flow.getCurrentState();
		if(log.isDebugEnabled()) {
			log.debug("Processing state: " + state.getStateName());			
		}
		if(state instanceof IFlowRealState) {
			processRealState(flow, (IFlowRealState) state);
		} else if (state instanceof IFlowVirtualState) {
			processVirtualState(flow, (IFlowVirtualState) state);
		} else {
			processUknownState(flow);
		}
	}

	@Override
	public void processRealState(IFlowCarter flow, IFlowRealState currentState) throws FlowException {
		IFlowState state = flow.getCurrentState();
		if(log.isTraceEnabled()) {
			log.trace("Processing real state: " + state.getStateName());			
		}
		if(state instanceof IFlowViewState) {
			processViewState(flow, (IFlowViewState) state);
		} else {
			processUknownState(flow);
		}
	}

	@Override
	public void processVirtualState(IFlowCarter flow, IFlowVirtualState currentState) throws FlowException {
		IFlowState state = flow.getCurrentState();
		if(log.isTraceEnabled()) {
			log.trace("Processing virtual state: " + state.getStateName());			
		}
		if(state instanceof IFlowConditionState) {
			if(log.isTraceEnabled()) {
				log.trace("Processing condition state: " + state.getStateName());			
			}
			processConditionState(flow, (IFlowConditionState) state);
		} else if(state instanceof IFlowSwitchState) {
			if(log.isTraceEnabled()) {
				log.trace("Processing switch state: " + state.getStateName());			
			}
			processSwitchState(flow, (IFlowSwitchState) state);
		} else if (state instanceof IFlowJoinState) {
			if(log.isTraceEnabled()) {
				log.trace("Processing join state: " + state.getStateName());			
			}
			processJoinState(flow, (IFlowJoinState) state);
		} else {
			if(log.isTraceEnabled()) {
				log.trace("Processing unknown state: " + state.getStateName());			
			}
			processUknownState(flow);
		}
	}

	public IFlowProcessor getFlowProcessor() {
		return flowProcessor;
	}

	public void setFlowProcessor(IFlowProcessor flowProcessor) {
		this.flowProcessor = flowProcessor;
	}

	@Override
	protected void finalize() throws Throwable {
		flowProcessor = null;
		super.finalize();
	}

}