/*
* Copyright 2010-2011 the original author or authors.
*
* 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 com.starflow.wf.engine.service.impl;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.springframework.transaction.TransactionStatus;
import org.springframework.util.Assert;
import org.springframework.util.ResourceUtils;
import com.starflow.wf.core.key.Keys;
import com.starflow.wf.core.util.PrimaryKeyUtil;
import com.starflow.wf.engine.ProcessEngine;
import com.starflow.wf.engine.ProcessEngineException;
import com.starflow.wf.engine.StarFlowState;
import com.starflow.wf.engine.model.ProcessDefine;
import com.starflow.wf.engine.model.elements.ActivityElement;
import com.starflow.wf.engine.model.elements.OperationElement;
import com.starflow.wf.engine.model.elements.TransitionElement;
import com.starflow.wf.engine.repository.IProcessDefineRepository;
import com.starflow.wf.engine.service.IProcessDefineService;
import com.starflow.wf.engine.transaction.TransactionCallback;
import com.starflow.wf.engine.transaction.TransactionCallbackWithoutResult;
import com.starflow.wf.engine.transaction.TransactionTemplate;
import com.starflow.wf.engine.xml.Dom4jProcDefParser;
/**
*
* @author libinsong1204@gmail.com
* @version 1.0
*/
public class ProcessDefineService implements IProcessDefineService {
private IProcessDefineRepository procDefRep;
private TransactionTemplate transactionTemplate;
public ProcessDefineService(ProcessEngine processEngine) {
Assert.notNull(processEngine);
this.procDefRep = processEngine.getApplicationContext().getBean(IProcessDefineRepository.class);
this.transactionTemplate = processEngine.getTransactionTemplate();
}
public void deployProcessXML(final String processDefContent) {
transactionTemplate.execute(new TransactionCallbackWithoutResult() {
@Override
public void doInTransactionWithoutResult(TransactionStatus status) {
ProcessDefine processDefine = new ProcessDefine();
long id = PrimaryKeyUtil.getPrimaryKey(Keys.PROCESSDEFID);
processDefine.setProcessDefId(id);
processDefine.setProcessDefContent(processDefContent);
Dom4jProcDefParser.parserProcessInfo(processDefine);
processDefine.setCreateTime(new Date());
processDefine.setCurrentState(StarFlowState.PROCESS_DEF_PUBLISH);
procDefRep.inertProcessDefine(processDefine);
}
});
}
public void deployProcessFile(String resourceLocation) {
try {
File file = ResourceUtils.getFile(resourceLocation);
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file) {
@Override
public int read() throws IOException {
// TODO Auto-generated method stub
return 0;
}
}, "UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
deployProcessXML(sb.toString());
} catch (FileNotFoundException e1) {
throw new ProcessEngineException("流程文件没有查找到", e1);
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
}
public void deleteProcessDefine(final long processDefId) {
transactionTemplate.execute(new TransactionCallbackWithoutResult() {
@Override
public void doInTransactionWithoutResult(TransactionStatus status) {
procDefRep.deleteProcessDefine(processDefId);
}
});
}
public void publishProcessDefine(final String processDefName, final long processDefId) {
transactionTemplate.execute(new TransactionCallbackWithoutResult() {
@Override
public void doInTransactionWithoutResult(TransactionStatus status) {
procDefRep.updateProcessDefineUnPublishStatus(processDefName);
procDefRep.updateProcessDefinePublishStatus(processDefId);
}
});
}
public Map<String, String> getProcessProperties(final Long processDefId) {
return transactionTemplate.execute(new TransactionCallback<Map<String, String>>() {
@Override
public Map<String, String> doInTransaction(TransactionStatus status) {
ProcessDefine processDefine = procDefRep.findProcessDefine(processDefId);
return processDefine.getProcessObject().getProperties();
}
});
}
public Map<String, String> getActivityProperties(final Long processDefId, final String activityDefId) {
return transactionTemplate.execute(new TransactionCallback<Map<String, String>>() {
@Override
public Map<String, String> doInTransaction(TransactionStatus status) {
ProcessDefine processDefine = procDefRep.findProcessDefine(processDefId);
ActivityElement activityXml = processDefine.getProcessObject().getActivitys().get(activityDefId);
return activityXml.getProperties();
}
});
}
public List<OperationElement> getActivityOperations(final Long processDefId, final String activityDefId) {
return transactionTemplate.execute(new TransactionCallback<List<OperationElement>>() {
@Override
public List<OperationElement> doInTransaction(TransactionStatus status) {
ProcessDefine processDefine = procDefRep.findProcessDefine(processDefId);
ActivityElement activityXml = processDefine.getProcessObject().getActivitys().get(activityDefId);
return activityXml.getOperations();
}
});
}
public String getActivityAction(final Long processDefId, final String activityDefId) {
return transactionTemplate.execute(new TransactionCallback<String>() {
@Override
public String doInTransaction(TransactionStatus status) {
ProcessDefine processDefine = procDefRep.findProcessDefine(processDefId);
ActivityElement activityXml = processDefine.getProcessObject().getActivitys().get(activityDefId);
return activityXml.getAction();
}
});
}
public List<ActivityElement> findBeforeActivities(final Long processDefId, final String activityDefId) {
return transactionTemplate.execute(new TransactionCallback<List<ActivityElement>>() {
@Override
public List<ActivityElement> doInTransaction(TransactionStatus status) {
ProcessDefine processDefine = procDefRep.findProcessDefine(processDefId);
ActivityElement activityXml = processDefine.getProcessObject().getActivitys().get(activityDefId);
List<TransitionElement> beforeTrans = activityXml.getBeforeTrans();
List<ActivityElement> list = new ArrayList<ActivityElement>();
for(TransitionElement transitionXml : beforeTrans) {
list.add(processDefine.getProcessObject().getActivitys().get(transitionXml.getFrom()));
}
return list;
}
});
}
public List<ActivityElement> findAfterActivities(final Long processDefId, final String activityDefId) {
return transactionTemplate.execute(new TransactionCallback<List<ActivityElement>>() {
@Override
public List<ActivityElement> doInTransaction(TransactionStatus status) {
ProcessDefine processDefine = procDefRep.findProcessDefine(processDefId);
ActivityElement activityXml = processDefine.getProcessObject().getActivitys().get(activityDefId);
List<TransitionElement> afterTrans = activityXml.getAfterTrans();
List<ActivityElement> list = new ArrayList<ActivityElement>();
for(TransitionElement transitionXml : afterTrans) {
list.add(processDefine.getProcessObject().getActivitys().get(transitionXml.getTo()));
}
return list;
}
});
}
}