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ProcessMain-simple.java.template
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ProcessMain-simple.java.template
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/*
* Copyright 2017 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.
* 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 com.sample;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.kie.api.KieBase;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.manager.RuntimeEnvironmentBuilder;
import org.kie.api.runtime.manager.RuntimeManager;
import org.kie.api.runtime.manager.RuntimeManagerFactory;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import org.kie.internal.runtime.StatefulKnowledgeSession;
import org.kie.internal.runtime.conf.AuditMode;
import org.kie.internal.runtime.conf.DeploymentDescriptor;
import org.kie.internal.runtime.manager.context.EmptyContext;
import org.kie.internal.runtime.manager.deploy.DeploymentDescriptorManager;
import org.kie.test.util.db.PersistenceUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This is a sample file to launch a process.
*/
public class ProcessMain {
private static final Logger logger = LoggerFactory.getLogger(ProcessMain.class);
private static final boolean usePersistence = true;
public static final void main(String[] args) throws Exception {
// load up the knowledge base
KieBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = newStatefulKnowledgeSession(kbase);
// start a new process instance
ksession.startProcess("com.sample.bpmn.hello");
logger.info("Process started ...");
}
private static KieBase readKnowledgeBase() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newClassPathResource("com/sample/sample.bpmn"), ResourceType.BPMN2);
return kbuilder.newKieBase();
}
public static StatefulKnowledgeSession newStatefulKnowledgeSession(KieBase kbase) {
RuntimeEnvironmentBuilder builder = null;
if ( usePersistence ) {
Properties properties = new Properties();
properties.put("driverClassName", "org.h2.Driver");
properties.put("className", "org.h2.jdbcx.JdbcDataSource");
properties.put("user", "sa");
properties.put("password", "");
properties.put("url", "jdbc:h2:tcp://localhost/~/jbpm-db");
properties.put("datasourceName", "jdbc/jbpm-ds");
PersistenceUtil.setupPoolingDataSource(properties);
Map<String, String> map = new HashMap<String, String>();
map.put("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa");
builder = RuntimeEnvironmentBuilder.Factory.get()
.newDefaultBuilder()
.entityManagerFactory(emf);
} else {
builder = RuntimeEnvironmentBuilder.Factory.get()
.newDefaultInMemoryBuilder();
DeploymentDescriptor descriptor =
new DeploymentDescriptorManager().getDefaultDescriptor().getBuilder().auditMode(AuditMode.NONE).get();
builder.addEnvironmentEntry("KieDeploymentDescriptor", descriptor);
}
builder.knowledgeBase(kbase);
RuntimeManager manager = RuntimeManagerFactory.Factory.get().newSingletonRuntimeManager(builder.get());
return (StatefulKnowledgeSession) manager.getRuntimeEngine(EmptyContext.get()).getKieSession();
}
}