/**
* Executes an external visual.
*
* @param visual The visual to be executed
* @param context The token context
* @param entrySocket Entry socket of the visual
* @return null
*/
public String executeVisual(VisualItem visual, TokenContext context, NodeSocket entrySocket)
throws Exception {
// TODO Fix 4 Save visual name to session context
// Log that we're delegating to the driver.
LogUtil.debug(
getClass(), "Setting current visual for external ui adapter to $0.", visual.getQualifier());
// Returning null will cause the process to stop
return null;
}
/**
* @see org.openbp.server.context.serializer.ContextObjectSerializer#writeContextObject(Object
* object, ObjectOutputStream out, TokenContext context, String key)
*/
public void writeContextObject(
Object object, ObjectOutputStream out, TokenContext context, String key) throws IOException {
if (!(object instanceof Serializable)) {
String msg =
LogUtil.error(
getClass(),
"Process variable value $0 cannot be persisted because it does not implement the java.io.Serializable interface (value class: $1).",
key,
object.getClass().getName());
throw new IOException(msg);
}
out.writeObject(object);
}
public void execute(JobExecutionContext context) throws JobExecutionException {
Object tokenId = "?";
try {
ProcessFacade processFacade = processServer.getProcessFacade();
// TODO Fix 3 This should be JobDataMap dataMap = context.getJobDataMap();
JobDataMap dataMap = context.getJobDetail().getJobDataMap();
boolean disabled = dataMap.getBoolean(KEY_DISABLED);
if (disabled) return;
TokenContext tc = null;
tokenId = dataMap.get(KEY_TOKEN_ID);
if (tokenId == null) {
// No token given, create new one
tc = processFacade.createToken();
processFacade.prepareTokenForScheduler(tc);
tokenId = tc.getId();
} else {
// Use existing token
tc = processFacade.getTokenById(tokenId);
if (tc == null) {
String msg =
LogUtil.error(
getClass(),
"Cannot find the scheduled token context (id $0) for job $1.",
tokenId,
context.getJobDetail().getGroup() + "." + context.getJobDetail().getName());
JobExecutionException ex = new JobExecutionException(msg);
ex.setUnscheduleAllTriggers(true);
throw ex;
}
}
String positionRef = dataMap.getString(KEY_POSITION_REF);
String executionMode = dataMap.getString(KEY_EXECUTION_MODE);
String startMode = dataMap.getString(KEY_START_MODE);
Map inputParamValues = null;
for (Iterator it = dataMap.entrySet().iterator(); it.hasNext(); ) {
Map.Entry entry = (Map.Entry) it.next();
String key = (String) entry.getKey();
if (key.startsWith(KEY_PARAM_PREFIX)) {
if (inputParamValues == null) {
inputParamValues = new HashMap();
}
key = key.substring(KEY_PARAM_PREFIX.length());
inputParamValues.put(key, entry.getValue());
} else if (key.startsWith(KEY_RUNTIME_ATRIBUTE_PREFIX)) {
key = key.substring(KEY_RUNTIME_ATRIBUTE_PREFIX.length());
tc.setRuntimeAttribute(key, entry.getValue());
}
}
Engine engine = processServer.getEngine();
if (ProcessJobDescriptor.START_MODE_RESUME.equals(startMode)) {
// Resume an existing token
if (engine.hasActiveObservers(SchedulerEngineEvent.RESUME_JOB, tc)) {
ProcessJobDescriptor desc =
((QuartzProcessScheduler) processServer.getProcessScheduler())
.createJobDescriptor(context.getJobDetail());
engine.fireEngineEvent(
new SchedulerEngineEvent(SchedulerEngineEvent.RESUME_JOB, tc, desc, engine));
}
processFacade.resumeToken(tc, positionRef, inputParamValues);
} else {
// Start a new token
if (engine.hasActiveObservers(SchedulerEngineEvent.START_JOB, tc)) {
ProcessJobDescriptor desc =
((QuartzProcessScheduler) processServer.getProcessScheduler())
.createJobDescriptor(context.getJobDetail());
engine.fireEngineEvent(
new SchedulerEngineEvent(SchedulerEngineEvent.START_JOB, tc, desc, engine));
}
processFacade.startToken(tc, positionRef, inputParamValues);
}
// Process the token immediately if desired, otherwise let the execution thread pool do this.
if (ProcessJobDescriptor.EXECUTION_MODE_SYNCHRONOUS.equals(executionMode)) {
// We do not need to set the lifecycle to LifecycleState.SELECTED, it will be set to
// LifecycleState.RUNNING by the executeContext method
tc = processFacade.getTokenById(tokenId);
if (tc == null) {
String msg =
LogUtil.error(
getClass(),
"Cannot find the scheduled token context (id $0) for job $1.",
tokenId,
context.getJobDetail().getGroup() + context.getJobDetail().getName());
JobExecutionException ex = new JobExecutionException(msg);
ex.setUnscheduleAllTriggers(true);
throw ex;
}
engine.executeContext(tc);
processFacade.commitTokenContextTransaction();
}
} catch (Exception e) {
JobExecutionException jex = null;
if (e instanceof JobExecutionException) {
jex = (JobExecutionException) e;
} else {
String msg =
LogUtil.error(
getClass(),
"Error occured while processing scheduled token context (id $0) for job $1.",
tokenId,
context.getJobDetail().getGroup() + context.getJobDetail().getName(),
e);
jex = new JobExecutionException(msg, e, true);
}
jex.setUnscheduleAllTriggers(true);
// TODO This will lead to an endless loop
// throw jex;
}
}