public gov.nih.nci.cagrid.dcqlresult.DCQLQueryResultsCollection execute(
gov.nih.nci.cagrid.dcql.DCQLQuery query)
throws RemoteException, gov.nih.nci.cagrid.fqp.stubs.types.FederatedQueryProcessingFault {
FederatedQueryEngine engine = new FederatedQueryEngine();
DCQLQueryResultsCollection results = null;
try {
results = engine.execute(query);
} catch (FederatedQueryProcessingException e) {
LOG.error("Problem executing query: " + e.getMessage());
FederatedQueryProcessingFault fault = new FederatedQueryProcessingFault();
fault.setFaultString("Problem executing query: " + e.getMessage());
FaultHelper helper = new FaultHelper(fault);
helper.addFaultCause(e);
throw helper.getFault();
}
return results;
}
private gov.nih.nci.cagrid.fqp.results.stubs.types.FederatedQueryResultsReference createEPR(
ResourceKey key) throws RemoteException {
MessageContext ctx = MessageContext.getCurrentContext();
String transportURL = (String) ctx.getProperty(org.apache.axis.MessageContext.TRANS_URL);
transportURL = transportURL.substring(0, transportURL.lastIndexOf('/') + 1);
// TODO: fix this somehow (pull from property or constant)
transportURL += "FederatedQueryResults";
try {
EndpointReferenceType epr = AddressingUtils.createEndpointReference(transportURL, key);
return new FederatedQueryResultsReference(epr);
} catch (Exception e) {
LOG.error("Problem returning reference to result:" + e.getMessage(), e);
InternalErrorFault fault = new InternalErrorFault();
fault.setFaultString("Problem returning reference to result:" + e.getMessage());
FaultHelper helper = new FaultHelper(fault);
helper.addFaultCause(e);
throw helper.getFault();
}
}
public gov.nih.nci.cagrid.fqp.results.stubs.types.FederatedQueryResultsReference
executeAsynchronously(gov.nih.nci.cagrid.dcql.DCQLQuery query) throws RemoteException {
// create a result resource
FQPResultResourceHome resultHome = null;
try {
resultHome = (FQPResultResourceHome) getFederatedQueryResultsResourceHome();
} catch (Exception e) {
LOG.error("Problem locating result home: " + e.getMessage(), e);
InternalErrorFault fault = new InternalErrorFault();
fault.setFaultString("Problem locating result home:" + e.getMessage());
FaultHelper helper = new FaultHelper(fault);
helper.addFaultCause(e);
throw helper.getFault();
}
FQPResultResource fqpResultResource = null;
ResourceKey key = null;
try {
key = resultHome.createFQPResultResource();
fqpResultResource = (FQPResultResource) resultHome.find(key);
} catch (Exception e) {
LOG.error("Problem creating and accessing resource:" + e.getMessage(), e);
InternalErrorFault fault = new InternalErrorFault();
fault.setFaultString("Problem creating and accessing resource:" + e.getMessage());
FaultHelper helper = new FaultHelper(fault);
helper.addFaultCause(e);
throw helper.getFault();
}
// configure security on the resource so only the creator of the
// resource (whoever is executing this) can operate on it
try {
// may be null if no current caller
fqpResultResource.setSecurityDescriptor(
SecurityUtils.createResultsResourceSecurityDescriptor());
} catch (Exception e) {
LOG.error("Problem configuring security on resource:" + e.getMessage(), e);
InternalErrorFault fault = new InternalErrorFault();
fault.setFaultString("Problem configuring security on resource:" + e.getMessage());
FaultHelper helper = new FaultHelper(fault);
helper.addFaultCause(e);
throw helper.getFault();
}
LOG.info("Resource created for, and owned by: " + SecurityManager.getManager().getCaller());
// set initial status
fqpResultResource.setStatusMessage("Queued for processing");
// set to terminate after lease expires
Calendar termTime = Calendar.getInstance();
termTime.add(Calendar.MINUTE, getLeaseDurationInMinutes());
fqpResultResource.setTerminationTime(termTime);
// create a worker thread to execute query
Work work = new QueryExecutionWork(fqpResultResource, query);
// add worker to pool
try {
getWorkManager().schedule(work);
} catch (Exception e) {
LOG.error("Problem scheduling processing:" + e.getMessage(), e);
InternalErrorFault fault = new InternalErrorFault();
fault.setFaultString("Problem scheduling processing:" + e.getMessage());
FaultHelper helper = new FaultHelper(fault);
helper.addFaultCause(e);
throw helper.getFault();
}
// return handle to resource
return createEPR(key);
}
