Java tutorial
/* * ************************************************************************************* * Copyright (C) 2008 EsperTech, Inc. All rights reserved. * * http://esper.codehaus.org * * http://www.espertech.com * * ---------------------------------------------------------------------------------- * * The software in this package is published under the terms of the GPL license * * a copy of which has been included with this distribution in the license.txt file. * * ************************************************************************************* */ package com.espertech.esper.multithread; import com.espertech.esper.client.EPServiceProvider; import com.espertech.esper.support.bean.SupportMarketDataBean; import com.espertech.esper.support.bean.SupportBean_A; import java.util.concurrent.Callable; import java.util.List; import java.util.ArrayList; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class StmtNamedWindowDeleteCallable implements Callable { private final EPServiceProvider engine; private final int numRepeats; private final String threadKey; public StmtNamedWindowDeleteCallable(String threadKey, EPServiceProvider engine, int numRepeats) { this.engine = engine; this.numRepeats = numRepeats; this.threadKey = threadKey; } public Object call() throws Exception { List<String> eventKeys = new ArrayList<String>(numRepeats); try { for (int loop = 0; loop < numRepeats; loop++) { // Insert event into named window String theEvent = "E" + threadKey + "_" + loop; eventKeys.add(theEvent); sendMarketBean(theEvent, 0); // delete same event sendSupportBean_A(theEvent); } } catch (Exception ex) { log.fatal("Error in thread " + Thread.currentThread().getId(), ex); return null; } return eventKeys; } private SupportBean_A sendSupportBean_A(String id) { SupportBean_A bean = new SupportBean_A(id); engine.getEPRuntime().sendEvent(bean); return bean; } private void sendMarketBean(String symbol, long volume) { SupportMarketDataBean bean = new SupportMarketDataBean(symbol, 0, volume, ""); engine.getEPRuntime().sendEvent(bean); } private static final Log log = LogFactory.getLog(StmtNamedWindowDeleteCallable.class); }