/*
* 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.
* 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.examples.android;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import ch.qos.logback.classic.android.BasicLogcatConfigurator;
import org.drools.examples.android.roboguice.serialized.R;
import org.drools.examples.helloworld.Message;
import org.kie.api.KieBase;
import org.kie.api.cdi.KBase;
import org.kie.api.definition.KiePackage;
import org.kie.api.definition.rule.Rule;
import org.kie.api.event.rule.DebugAgendaEventListener;
import org.kie.api.event.rule.DebugRuleRuntimeEventListener;
import org.kie.api.runtime.Channel;
import org.kie.api.runtime.StatelessKieSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import roboguice.activity.RoboActivity;
import roboguice.inject.ContentView;
import roboguice.inject.InjectView;
import java.util.ArrayList;
import java.util.List;
/**
* Example showing injecting a preserialized knowledge base with drools-core dependency and roboguice.
*/
@ContentView(R.layout.main)
public class DroolsActivity extends RoboActivity {
private static final Logger logger = LoggerFactory.getLogger(DroolsActivity.class);
@InjectView(R.id.fireRules)
private Button fireRulesButton;
@InjectView(R.id.log)
private TextView logView;
private String log = "";
private Handler handler = new Handler() {
@Override
public void handleMessage(android.os.Message msg) {
super.handleMessage(msg);
logView.setText(log);
}
};
//load serialized KnowledgePackages
@KBase("HelloKB")
private KieBase kBase;
@Override
public void onCreate(Bundle savedInstanceState) {
BasicLogcatConfigurator.configureDefaultContext();
super.onCreate(savedInstanceState);
for(KiePackage pkg : kBase.getKiePackages()) {
logger.debug("Loaded rule package: " + pkg.toString());
for (Rule rule : pkg.getRules()) {
logger.debug("Rule: " + rule.getName());
}
}
fireRulesButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new FireRulesTask().execute();
}
});
}
private class FireRulesTask extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
logger.debug("Processing rules");
DroolsActivity.this.setProgressBarIndeterminateVisibility(true);
}
@Override
protected Void doInBackground(Void... params) {
try {
logger.debug("Firing rules");
final Message message = new Message();
message.setMessage("Hello World");
message.setStatus(Message.HELLO);
final StatelessKieSession ksession = kBase.newStatelessKieSession();
ksession.addEventListener(new DebugAgendaEventListener());
ksession.addEventListener(new DebugRuleRuntimeEventListener());
ksession.registerChannel("log", new Channel() {
@Override
public void send(Object object) {
log += object.toString() + "\n";
handler.obtainMessage().sendToTarget();
}
});
ksession.execute(message);
}catch(Exception e) {
logger.error("Drools exception", e);
}
return null;
}
@Override
protected void onPostExecute(Void result) {
DroolsActivity.this.setProgressBarIndeterminateVisibility(false);
}
}
}