gov.nih.nci.cagrid.fqp.processor
Class FederatedQueryEngine

java.lang.Object
  gov.nih.nci.cagrid.fqp.processor.FederatedQueryEngine

public class FederatedQueryEngine
extends java.lang.Object

Author:

Srini Akkala, Scott Oster

Field Summary

protected org.globus.gsi.GlobusCredential	cred
protected static org.apache.commons.logging.Log	LOG

Constructor Summary

FederatedQueryEngine()

FederatedQueryEngine(org.globus.gsi.GlobusCredential cred)

Method Summary

DCQLQueryResultsCollection	execute(DCQLQuery dcqlQuery) Call Federated Query Processor, and send the generated CQLQuery to each targeted service, placing each results into a single DCQLQueryResults object.
CQLQueryResults	executeAndAggregateResults(DCQLQuery dcqlQuery) Call Federated Query Processor, and send the generated CQLQuery to each targeted service, aggregating the results into a single CQLQueryResults object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

protected static org.apache.commons.logging.Log LOG

cred

protected org.globus.gsi.GlobusCredential cred

Constructor Detail

FederatedQueryEngine

public FederatedQueryEngine()

FederatedQueryEngine

public FederatedQueryEngine(org.globus.gsi.GlobusCredential cred)

Method Detail

execute

public DCQLQueryResultsCollection execute(DCQLQuery dcqlQuery)
                                   throws FederatedQueryProcessingException

Call Federated Query Processor, and send the generated CQLQuery to each targeted service, placing each results into a single DCQLQueryResults object.

Parameters:

dcqlQuery -

Returns:

The results of executing the DCQL query

Throws:

FederatedQueryProcessingException

executeAndAggregateResults

public CQLQueryResults executeAndAggregateResults(DCQLQuery dcqlQuery)
                                           throws FederatedQueryProcessingException

Call Federated Query Processor, and send the generated CQLQuery to each targeted service, aggregating the results into a single CQLQueryResults object.

Parameters:

dcqlQuery -

Returns:

Aggregated results of the DCQL query

Throws:

FederatedQueryProcessingException