gemfire-core/src/test/java/com/gemstone/gemfire/cache/query/functional/IndexUsageWithAliasAsProjAtrbtJUnitTest.java

/*=========================================================================
 * Copyright (c) 2010-2014 Pivotal Software, Inc. All Rights Reserved.
 * This product is protected by U.S. and international copyright
 * and intellectual property laws. Pivotal products are covered by
 * one or more patents listed at http://www.pivotal.io/patents.
 *=========================================================================
 */
/*
 * IndexUsageWithAliasAsProjAtrbtJUnitTest.java
 *
 * Created on May 4, 2005, 11:10 AM
 *@author vikramj
 */
package com.gemstone.gemfire.cache.query.functional;

import static org.junit.Assert.fail;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Set;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.cache.query.CacheUtils;
import com.gemstone.gemfire.cache.query.Index;
import com.gemstone.gemfire.cache.query.IndexType;
import com.gemstone.gemfire.cache.query.Query;
import com.gemstone.gemfire.cache.query.QueryService;
import com.gemstone.gemfire.cache.query.SelectResults;
import com.gemstone.gemfire.cache.query.data.Portfolio;
import com.gemstone.gemfire.cache.query.internal.QueryObserverAdapter;
import com.gemstone.gemfire.cache.query.internal.QueryObserverHolder;
import com.gemstone.gemfire.cache.query.types.ObjectType;
import com.gemstone.gemfire.test.junit.categories.IntegrationTest;

@Category(IntegrationTest.class)
public class IndexUsageWithAliasAsProjAtrbtJUnitTest{
  ObjectType resType1=null;
  ObjectType resType2= null;


  int resSize1=0;
  int resSize2=0;

  Iterator itert1=null;
  Iterator itert2=null;

  Set set1=null;
  Set set2=null;

  String s1;
  String s2;


  @Before
  public void setUp() throws java.lang.Exception {
    CacheUtils.startCache();
  }

  @After
  public void tearDown() throws java.lang.Exception {
    CacheUtils.closeCache();
  }

  @Test
  public void testComparisonBetnWithAndWithoutIndexCreation() throws Exception {
    //TASK IUM 7
    Region region = CacheUtils.createRegion("portfolios", Portfolio.class);
    for(int i=0;i<4;i++){
      region.put(""+i, new Portfolio(i));
    }
    QueryService qs;
    qs = CacheUtils.getQueryService();
    String queries[] = {
        // IUM 7
        "Select distinct security from /portfolios, secIds security where length > 1",
        // IUM 8         
        "Select distinct security from /portfolios , secIds security where length > 2 AND (intern <> 'SUN' OR intern <> 'DELL' )",
        // IUM 9 
        "Select distinct  security from /portfolios  pos , secIds security where length > 2 and pos.ID > 0"         

    };
    SelectResults r[][] = new SelectResults[queries.length][2];

    for (int i = 0; i < queries.length; i++) {
      Query q = null;
      try {
        q = CacheUtils.getQueryService().newQuery(queries[i]);
        QueryObserverImpl observer = new QueryObserverImpl();
        QueryObserverHolder.setInstance(observer);
        r[i][0] =(SelectResults) q.execute();
        if(!observer.isIndexesUsed){
          CacheUtils.log("NO INDEX USED");
        }else {
          fail("If index were not there how did they get used ???? ");
        }              

      } catch (Exception e) {
        e.printStackTrace();
        fail(q.getQueryString());
      }
    }

    //  Create an Index on status and execute the same query again.

    qs = CacheUtils.getQueryService();
    qs.createIndex("lengthIndex", IndexType.FUNCTIONAL,"length","/portfolios,secIds, positions.values");
    for (int i = 0; i < queries.length; i++) {
      Query q = null;
      try {
        q = CacheUtils.getQueryService().newQuery(queries[i]);
        QueryObserverImpl observer2 = new QueryObserverImpl();
        QueryObserverHolder.setInstance(observer2);
        r[i][1] = (SelectResults)q.execute();

        if(observer2.isIndexesUsed){
          CacheUtils.log("YES INDEX IS USED!");
        }
        else {
          fail("Index should have been used!!! ");
        }              

      } catch (Exception e) {
        e.printStackTrace();
        fail(q.getQueryString());
      }
    }
    CacheUtils.compareResultsOfWithAndWithoutIndex(r,this);        

  }
  @Test
  public void testQueryResultComposition() throws Exception{
    Region region = CacheUtils.createRegion("pos", Portfolio.class);
    for(int i=0;i<4;i++){
      region.put(""+i, new Portfolio(i));
    }
    CacheUtils.getQueryService();
    String queries[] = {
        //"select distinct * from /pos, positions where value != null",
        //"select distinct intern from /pos,names where length >= 3",
        "select distinct nm from /pos prt,names nm where ID>0",
        "select distinct prt from /pos prt, names where names[3]='ddd'"
    };
    try{
      for(int i=0;i<queries.length;i++){
        Query q = CacheUtils.getQueryService().newQuery(queries[i]);
        q.execute();
        //   CacheUtils.log(Utils.printResult(result));

      }
    }catch (Exception e){
      e.printStackTrace();
      fail();
    }
  }

  class QueryObserverImpl extends QueryObserverAdapter{
    boolean isIndexesUsed = false;
    ArrayList indexesUsed = new ArrayList();

    public void beforeIndexLookup(Index index, int oper, Object key) {
      indexesUsed.add(index.getName());
    }

    public void afterIndexLookup(Collection results) {
      if(results != null){
        isIndexesUsed = true;
      }
    }
  }
}