content: /*
   *                         Vortex OpenSplice
   *
   *   This software and documentation are Copyright 2006 to TO_YEAR ADLINK
   *   Technology Limited, its affiliated companies and licensors. All rights
   *   reserved.
   *
   *   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.
   *
   */
  
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.Random;
  
  import org.omg.dds.core.InstanceHandle;
  import org.omg.dds.core.ServiceEnvironment;
  import org.omg.dds.core.policy.DestinationOrder;
  import org.omg.dds.core.policy.Durability;
  import org.omg.dds.core.policy.Partition;
  import org.omg.dds.core.policy.PolicyFactory;
  import org.omg.dds.core.policy.Reliability;
  import org.omg.dds.core.policy.WriterDataLifecycle;
  import org.omg.dds.core.status.Status;
  import org.omg.dds.domain.DomainParticipant;
  import org.omg.dds.domain.DomainParticipantFactory;
  import org.omg.dds.pub.DataWriter;
  import org.omg.dds.pub.DataWriterQos;
  import org.omg.dds.pub.Publisher;
  import org.omg.dds.pub.PublisherQos;
  import org.omg.dds.topic.Topic;
  import org.omg.dds.topic.TopicQos;
  
  import StockMarket.Stock;
  
  public class QueryConditionDataPublisher {
  
  	public static void main(String[] args) {
  	   try {
      	    String partitionName = "QueryCondition example";
      	    System.setProperty(
                      ServiceEnvironment.IMPLEMENTATION_CLASS_NAME_PROPERTY,
                      "org.opensplice.dds.core.OsplServiceEnvironment");
              ServiceEnvironment env = ServiceEnvironment
                      .createInstance(QueryConditionDataPublisher.class.getClassLoader());
  
              DomainParticipantFactory dpf = DomainParticipantFactory.getInstance(env);
  
              // create Domain Participant
              DomainParticipant participant = dpf.createParticipant();
  
              // create Topic with reliable, transient and ownership qos
              PolicyFactory policyFactory = env.getSPI().getPolicyFactory();
              Reliability reliable = policyFactory.Reliability().withReliable();
              Durability durability = policyFactory.Durability().withTransient();
              DestinationOrder des = policyFactory.DestinationOrder().withSourceTimestamp();
              TopicQos topicQos = participant.getDefaultTopicQos().withPolicies(reliable,durability,des);
              Collection<Class<? extends Status>> status = new HashSet<Class<? extends Status>>();
              Topic<Stock> topic = participant.createTopic("StockTrackerExclusive", Stock.class,topicQos, null, status);
  
              // create Publisher with partition qos
              Partition partition = policyFactory.Partition().withName(partitionName);
              PublisherQos pubQos = participant.getDefaultPublisherQos().withPolicy(partition);
              Publisher pub = participant.createPublisher(pubQos);
  
              // create DataWriter with autDisposeUnregisteredInstances qos
              WriterDataLifecycle wdlq = policyFactory.WriterDataLifecycle().withAutDisposeUnregisteredInstances(false);
              DataWriterQos dwQos = pub.copyFromTopicQos(pub.getDefaultDataWriterQos().withPolicies(wdlq),topic.getQos());
              DataWriter<Stock> writer = pub.createDataWriter(topic,dwQos);
  
      		Stock msft = new Stock();
      		msft.ticker = "MSFT";
      		msft.price = 19.95f;
  
      		Stock ge = new Stock();
      		ge.ticker = "GE";
      		ge.price = 10.00f;
  
      		// register the two stock instances
      		InstanceHandle msftHandle = writer.registerInstance(msft);
      		InstanceHandle geHandle = writer.registerInstance(ge);
  
      		// update data every second
      		for (int x = 0; x < 20; x++) {
      		        System.out.format("GE : %.1f MSFT : %.1f\n", ge.price, msft.price);
      			msft.price = msft.price + (new Random()).nextFloat();
      			writer.write(msft, msftHandle);
  
      			ge.price = ge.price + (new Random()).nextFloat();
      			writer.write(ge, geHandle);
  
      			try {
      				Thread.sleep(1000);
      			} catch (InterruptedException e) {
      				e.printStackTrace();
      			}
      		}
  
      		msft.price = -1.0f; // signal to terminate
      		ge.price = -1.0f; // signal to terminate
  
      		writer.write(msft, msftHandle);
      		writer.write(ge, geHandle);
      		try {
      			Thread.sleep(1000);
      		} catch (InterruptedException e) {
      			e.printStackTrace();
      		}
      	        System.out.println("Market Closed.");
  
      		// clean up
              writer.dispose(msftHandle,msft);
              writer.dispose(geHandle,ge);
              writer.unregisterInstance(msftHandle,msft);
              writer.unregisterInstance(geHandle,ge);
              participant.close();
      	} catch(Exception e) {
              System.out.println("Error occured: " + e.getMessage());
              e.printStackTrace();
          }
  
  	}
  }
  