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 DDS.ANY_INSTANCE_STATE;
  import DDS.ANY_SAMPLE_STATE;
  import DDS.ANY_VIEW_STATE;
  import DDS.DataReader;
  import DDS.LENGTH_UNLIMITED;
  import DDS.SampleInfoSeqHolder;
  import StockMarket.StockDataReader;
  import StockMarket.StockDataReaderHelper;
  import StockMarket.StockSeqHolder;
  import StockMarket.StockTypeSupport;
  
  public class ContentFilteredTopicDataSubscriber {
  
  	public static void main(String[] args) {
  		String stkToSubscribe = null;
  		if (args.length > 0) {
  			stkToSubscribe = args[0];
  		}
  
  		DDSEntityManager mgr = new DDSEntityManager();
  		String partitionName = "ContentFilteredTopic example";
  
  		// create Domain Participant
  		mgr.createParticipant(partitionName);
  
  		// create Type
  		StockTypeSupport msgTS = new StockTypeSupport();
  		mgr.registerType(msgTS);
  
  		// create Topic
  		mgr.createTopic("StockTrackerExclusive");
  
  		// create Subscriber
  		mgr.createSubscriber();
  		String expr[] = new String[0];
  		if (stkToSubscribe == null)
  			// Subscribe to all stocks
  			mgr.createReader(false);
  		else {
  			// create Content Filtered Topic
  			String sqlExpr = "ticker = '" + stkToSubscribe + "'";
  			mgr.createContentFilteredTopic("MyStockTopic", sqlExpr, expr);
  
  			// create Filtered DataReader
  			mgr.createReader(true);
  		}
  
  		// Read Events
  
  		DataReader dreader = mgr.getReader();
  		StockDataReader stockReader = StockDataReaderHelper.narrow(dreader);
  
  		StockSeqHolder msgSeq = new StockSeqHolder();
  		SampleInfoSeqHolder infoSeq = new SampleInfoSeqHolder();
  		boolean terminate = false;
  		int count = 0;
  		System.out.println("Ready");
  		while (!terminate && count < 1500) { // We dont want the example to run indefinitely
  			stockReader.take(msgSeq, infoSeq, LENGTH_UNLIMITED.value,
  					ANY_SAMPLE_STATE.value, ANY_VIEW_STATE.value,
  					ANY_INSTANCE_STATE.value);
  			for (int i = 0; i < msgSeq.value.length; i++) {
  				if (msgSeq.value[i].price == -1.0f) {
  					terminate = true;
  					break;
  				}
  				System.out.println(msgSeq.value[i].ticker + ": "
  						+ msgSeq.value[i].price);
  			}
  			try
  			{
  				Thread.sleep(200);
  			}
  			catch(InterruptedException ie)
  			{
  				// nothing to do
  			}
  			++count;
  		}
  		stockReader.return_loan(msgSeq, infoSeq);
  		System.out.println("Market Closed");
  		// clean up
  		mgr.getSubscriber().delete_datareader(stockReader);
  		mgr.deleteSubscriber();
  		mgr.deleteFilteredTopic();
  		mgr.deleteTopic();
  		mgr.deleteParticipant();
  
  	}
  }
  