/* 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 org.activiti.engine.impl.rules;
import java.util.Map;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.persistence.deploy.Deployer;
import org.activiti.engine.impl.persistence.deploy.DeploymentManager;
import org.activiti.engine.impl.persistence.entity.DeploymentEntity;
import org.activiti.engine.impl.persistence.entity.ResourceEntity;
import org.drools.KnowledgeBase;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.io.Resource;
import org.drools.io.ResourceFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Tom Baeyens
*/
public class RulesDeployer implements Deployer {
private static Logger log = LoggerFactory.getLogger(RulesDeployer.class);
public void deploy(DeploymentEntity deployment, Map<String, Object> deploymentSettings) {
KnowledgeBuilder knowledgeBuilder = null;
DeploymentManager deploymentManager = Context
.getProcessEngineConfiguration()
.getDeploymentManager();
Map<String, ResourceEntity> resources = deployment.getResources();
for (String resourceName : resources.keySet()) {
log.info("Processing resource {}", resourceName);
if (resourceName.endsWith(".drl")) { // is only parsing .drls sufficient? what about other rule dsl's? (@see ResourceType)
if (knowledgeBuilder==null) {
knowledgeBuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
}
ResourceEntity resourceEntity = resources.get(resourceName);
byte[] resourceBytes = resourceEntity.getBytes();
Resource droolsResource = ResourceFactory.newByteArrayResource(resourceBytes);
knowledgeBuilder.add(droolsResource, ResourceType.DRL);
}
}
if (knowledgeBuilder!=null) {
KnowledgeBase knowledgeBase = knowledgeBuilder.newKnowledgeBase();
deploymentManager.getKnowledgeBaseCache().add(deployment.getId(), knowledgeBase);
}
}
}