TestEnumDistinct.java example

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/*
 ***************************************************************************************
 *  Copyright (C) 2006 EsperTech, Inc. All rights reserved.                            *
 *  http://www.espertech.com/esper                                                     *
 *  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.regression.enummethod;

import com.espertech.esper.client.*;
import com.espertech.esper.client.scopetest.SupportUpdateListener;
import com.espertech.esper.metrics.instrumentation.InstrumentationHelper;
import com.espertech.esper.supportregression.bean.SupportBean_ST0_Container;
import com.espertech.esper.supportregression.bean.SupportCollection;
import com.espertech.esper.supportregression.bean.lambda.LambdaAssertionUtil;
import com.espertech.esper.supportregression.client.SupportConfigFactory;
import junit.framework.TestCase;

import java.util.Collection;

public class TestEnumDistinct extends TestCase {

    private EPServiceProvider epService;
    private SupportUpdateListener listener;

    public void setUp() {

        Configuration config = SupportConfigFactory.getConfiguration();
        config.addEventType("Bean", SupportBean_ST0_Container.class);
        config.addEventType("SupportCollection", SupportCollection.class);
        epService = EPServiceProviderManager.getDefaultProvider(config);
        epService.initialize();
        listener = new SupportUpdateListener();
        if (InstrumentationHelper.ENABLED) { InstrumentationHelper.startTest(epService, this.getClass(), getName());}
    }

    protected void tearDown() throws Exception {
        if (InstrumentationHelper.ENABLED) { InstrumentationHelper.endTest();}
        listener = null;
    }

    public void testDistinctEvents() {

        String[] fields = "val0".split(",");
        String eplFragment = "select " +
                "contained.distinctOf(x => p00) as val0 " +
                " from Bean";
        EPStatement stmtFragment = epService.getEPAdministrator().createEPL(eplFragment);
        stmtFragment.addListener(listener);
        LambdaAssertionUtil.assertTypes(stmtFragment.getEventType(), fields, new Class[]{Collection.class});

        epService.getEPRuntime().sendEvent(SupportBean_ST0_Container.make2Value("E1,1", "E2,2", "E3,1"));
        LambdaAssertionUtil.assertST0Id(listener, "val0", "E1,E2");
        listener.reset();

        epService.getEPRuntime().sendEvent(SupportBean_ST0_Container.make2Value("E3,1", "E2,2", "E4,1", "E1,2"));
        LambdaAssertionUtil.assertST0Id(listener, "val0", "E3,E2");
        listener.reset();

        epService.getEPRuntime().sendEvent(SupportBean_ST0_Container.make2Value(null));
        for (String field : fields) {
            LambdaAssertionUtil.assertST0Id(listener, field, null);
        }
        listener.reset();

        epService.getEPRuntime().sendEvent(SupportBean_ST0_Container.make2Value());
        for (String field : fields) {
            LambdaAssertionUtil.assertST0Id(listener, field, "");
        }
        listener.reset();
    }

    public void testDistinctScalar() {

        epService.getEPAdministrator().getConfiguration().addPlugInSingleRowFunction("extractNum", TestEnumMinMax.MyService.class.getName(), "extractNum");

        String[] fields = "val0,val1".split(",");
        String eplFragment = "select " +
                "strvals.distinctOf() as val0, " +
                "strvals.distinctOf(v => extractNum(v)) as val1 " +
                "from SupportCollection";
        EPStatement stmtFragment = epService.getEPAdministrator().createEPL(eplFragment);
        stmtFragment.addListener(listener);
        LambdaAssertionUtil.assertTypes(stmtFragment.getEventType(), fields, new Class[]{Collection.class, Collection.class});

        epService.getEPRuntime().sendEvent(SupportCollection.makeString("E2,E1,E2,E2"));
        LambdaAssertionUtil.assertValuesArrayScalar(listener, "val0", "E2", "E1");
        LambdaAssertionUtil.assertValuesArrayScalar(listener, "val1", "E2", "E1");
        listener.reset();

        LambdaAssertionUtil.assertSingleAndEmptySupportColl(epService, listener, fields);
        stmtFragment.destroy();
    }
}