/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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 org.kie.server.services.drools;
import org.drools.core.command.runtime.BatchExecutionCommandImpl;
import org.kie.api.command.BatchExecutionCommand;
import org.kie.api.runtime.CommandExecutor;
import org.kie.api.runtime.ExecutionResults;
import org.kie.server.services.api.KieContainerInstance;
import org.kie.server.services.api.KieServerRegistry;
import org.kie.server.services.impl.KieContainerInstanceImpl;
/**
* Direct rules execution service that allow use of typed objects instead of string only
*/
public class RulesExecutionService {
private KieServerRegistry context;
public RulesExecutionService(KieServerRegistry context) {
this.context = context;
}
public ExecutionResults call(KieContainerInstance kci, BatchExecutionCommand executionCommand) {
BatchExecutionCommandImpl command = (BatchExecutionCommandImpl) executionCommand;
if (kci != null && kci.getKieContainer() != null) {
// find the session
CommandExecutor ks = null;
if( command.getLookup() != null ) {
ks = context.getKieSessionLookupManager().lookup(command.getLookup(), kci, context);
} else {
// if no session ID is defined, then the default is a stateful session
ks = ((KieContainerInstanceImpl)kci).getKieContainer().getKieSession();
}
if (ks != null) {
ExecutionResults results = ks.execute(command);
return results;
} else {
throw new IllegalStateException("Session '" + command.getLookup() + "' not found on container '" + kci.getContainerId() + "'.");
}
}
throw new IllegalStateException("Unable to execute command " + command);
}
}