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KieFileSystemExample.java
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KieFileSystemExample.java
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.drools.example.api.kiefilesystem;
import org.kie.api.KieServices;
import org.kie.api.builder.KieBuilder;
import org.kie.api.builder.KieFileSystem;
import org.kie.api.builder.KieRepository;
import org.kie.api.builder.Message.Level;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;
import java.io.PrintStream;
public class KieFileSystemExample {
public void go(PrintStream out) {
KieServices ks = KieServices.Factory.get();
KieRepository kr = ks.getRepository();
KieFileSystem kfs = ks.newKieFileSystem();
kfs.write("src/main/resources/org/kie/example5/HAL5.drl", getRule());
KieBuilder kb = ks.newKieBuilder(kfs);
kb.buildAll(); // kieModule is automatically deployed to KieRepository if successfully built.
if (kb.getResults().hasMessages(Level.ERROR)) {
throw new RuntimeException("Build Errors:\n" + kb.getResults().toString());
}
KieContainer kContainer = ks.newKieContainer(kr.getDefaultReleaseId());
KieSession kSession = kContainer.newKieSession();
kSession.setGlobal("out", out);
kSession.insert(new Message("Dave", "Hello, HAL. Do you read me, HAL?"));
kSession.fireAllRules();
}
public static void main(String[] args) {
new KieFileSystemExample().go(System.out);
}
private static String getRule() {
String s = "" +
"package org.drools.example.api.kiefilesystem \n\n" +
"import org.drools.example.api.kiefilesystem.Message \n\n" +
"global java.io.PrintStream out \n\n" +
"rule \"rule 1\" when \n" +
" m : Message( ) \n" +
"then \n" +
" out.println( m.getName() + \": \" + m.getText() ); \n" +
"end \n" +
"rule \"rule 2\" when \n" +
" Message( text == \"Hello, HAL. Do you read me, HAL?\" ) \n" +
"then \n" +
" insert( new Message(\"HAL\", \"Dave. I read you.\" ) ); \n" +
"end";
return s;
}
}