package org.drools.process.audit;
import java.io.InputStreamReader;
import java.io.Reader;
import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.StatefulSession;
import org.drools.compiler.PackageBuilder;
import org.drools.process.instance.impl.demo.UIWorkItemHandler;
import org.drools.rule.Package;
public class ProcessInstanceExecutor {
public static final void main(String[] args) {
try {
//load the process
RuleBase ruleBase = createKnowledgeBase();
// create a new session
StatefulSession session = ruleBase.newStatefulSession();
new WorkingMemoryDbLogger(session);
UIWorkItemHandler uiHandler = new UIWorkItemHandler();
session.getWorkItemManager().registerWorkItemHandler("Human Task", uiHandler);
uiHandler.setVisible(true);
new ProcessInstanceExecutorFrame(session).setVisible(true);
} catch (Throwable t) {
t.printStackTrace();
}
}
/**
* Creates the knowledge base by loading the process definition.
*/
private static RuleBase createKnowledgeBase() throws Exception {
// create a builder
PackageBuilder builder = new PackageBuilder();
// load the process
Reader source = new InputStreamReader(
ProcessInstanceExecutor.class.getResourceAsStream("/ruleflow.rf"));
builder.addProcessFromXml(source);
source = new InputStreamReader(
ProcessInstanceExecutor.class.getResourceAsStream("/ruleflow2.rf"));
builder.addProcessFromXml(source);
// create the knowledge base
Package pkg = builder.getPackage();
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(pkg);
return ruleBase;
}
}