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1 package org.hibernate.test.stats;
3
4 import junit.framework.Test;
5 import junit.framework.TestSuite;
6 import org.hibernate.FetchMode;
7 import org.hibernate.Session;
8 import org.hibernate.SessionFactory;
9 import org.hibernate.Transaction;
10 import org.hibernate.mapping.Collection;
11 import org.hibernate.stat.Statistics;
12 import org.hibernate.test.TestCase;
13
14 import java.util.HashSet  ;
15
16
21 public class StatsTest extends TestCase {
22 public void testCollectionFetchVsLoad() throws Exception {
23 Session s = openSession();
24 Transaction tx = s.beginTransaction();
25 Statistics stats = getSessions().getStatistics();
26 stats.clear();
27 boolean isStats = stats.isStatisticsEnabled();
28 stats.setStatisticsEnabled(true);
29 Continent europe = fillDb(s);
30 tx.commit();
31 s.clear();
32 tx = s.beginTransaction();
33 assertEquals(0, stats.getCollectionLoadCount() );
34 assertEquals(0, stats.getCollectionFetchCount() );
35 Continent europe2 = (Continent) s.get( Continent.class, europe.getId() );
36 assertEquals("Lazy true: no collection should be loaded", 0, stats.getCollectionLoadCount() );
37 assertEquals( 0, stats.getCollectionFetchCount() );
38 europe2.getCountries().size();
39 assertEquals( 1, stats.getCollectionLoadCount() );
40 assertEquals("Explicit fetch of the collection state", 1, stats.getCollectionFetchCount() );
41 tx.commit();
42 s.close();
43
44 s = openSession();
45 tx = s.beginTransaction();
46 stats.clear();
47 europe = fillDb(s);
48 tx.commit();
49 s.clear();
50 tx = s.beginTransaction();
51 assertEquals( 0, stats.getCollectionLoadCount() );
52 assertEquals( 0, stats.getCollectionFetchCount() );
53 europe2 = (Continent) s.createQuery(
54 "from " + Continent.class.getName() + " a join fetch a.countries where a.id = " + europe.getId()
55 ).uniqueResult();
56 assertEquals( 1, stats.getCollectionLoadCount() );
57 assertEquals( "collection should be loaded in the same query as its parent", 0, stats.getCollectionFetchCount() );
58 tx.commit();
59 s.close();
60
61 Collection coll = getCfg().getCollectionMapping(Continent.class.getName() + ".countries");
62 coll.setFetchMode(FetchMode.JOIN);
63 coll.setLazy(false);
64 SessionFactory sf = getCfg().buildSessionFactory();
65 stats = sf.getStatistics();
66 stats.clear();
67 stats.setStatisticsEnabled(true);
68 s = sf.openSession();
69 tx = s.beginTransaction();
70 europe = fillDb(s);
71 tx.commit();
72 s.clear();
73 tx = s.beginTransaction();
74 assertEquals( 0, stats.getCollectionLoadCount() );
75 assertEquals( 0, stats.getCollectionFetchCount() );
76 europe2 = (Continent) s.get( Continent.class, europe.getId() );
77 assertEquals( 1, stats.getCollectionLoadCount() );
78 assertEquals( "Should do direct load, not indirect second load when lazy false and JOIN", 0, stats.getCollectionFetchCount() );
79 tx.commit();
80 s.close();
81 sf.close();
82
83 coll = getCfg().getCollectionMapping(Continent.class.getName() + ".countries");
84 coll.setFetchMode(FetchMode.SELECT);
85 coll.setLazy(false);
86 sf = getCfg().buildSessionFactory();
87 stats = sf.getStatistics();
88 stats.clear();
89 stats.setStatisticsEnabled(true);
90 s = sf.openSession();
91 tx = s.beginTransaction();
92 europe = fillDb(s);
93 tx.commit();
94 s.clear();
95 tx = s.beginTransaction();
96 assertEquals( 0, stats.getCollectionLoadCount() );
97 assertEquals( 0, stats.getCollectionFetchCount() );
98 europe2 = (Continent) s.get( Continent.class, europe.getId() );
99 assertEquals( 1, stats.getCollectionLoadCount() );
100 assertEquals( "Should do explicit collection load, not part of the first one", 1, stats.getCollectionFetchCount() );
101 tx.commit();
102 s.close();
103 sf.close();
104
105 stats.setStatisticsEnabled(isStats);
106 }
107
108 private Continent fillDb(Session s) {
109 Continent europe = new Continent();
110 europe.setName("Europe");
111 Country france = new Country();
112 france.setName("France");
113 europe.setCountries( new HashSet () );
114 europe.getCountries().add(france);
115 s.persist(france);
116 s.persist(europe);
117 return europe;
118 }
119
120 protected String [] getMappings() {
121 return new String [] {
122 "stats/Continent.hbm.xml"
123 };
124 }
125
126 public StatsTest(String x) {
127 super(x);
128 }
129
130 public static Test suite() {
131 return new TestSuite(StatsTest.class);
132 }
133 }
134 |
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