#919 - io.ebean package initial

src/test/java/org/tests/batchload/TestBatchLazyWithCacheHits.java

@@ -0,0 +1,87 @@
+package org.tests.batchload;
+
+import io.ebean.BaseTestCase;
+import io.ebean.Ebean;
+import io.ebean.cache.ServerCache;
+import io.ebean.cache.ServerCacheManager;
+import io.ebean.cache.ServerCacheStatistics;
+import org.tests.model.basic.UUOne;
+import org.avaje.ebeantest.LoggedSqlCollector;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class TestBatchLazyWithCacheHits extends BaseTestCase {
+
+  private UUOne insert(String name) {
+    UUOne one = new UUOne();
+    one.setName("testBLWCH" + name);
+    Ebean.save(one);
+    return one;
+  }
+
+  @Test
+  public void testOnCacheHit() {
+
+    ArrayList<UUOne> inserted = new ArrayList<>();
+    String[] names = "A,B,C,D,E,F,G,H,I,J".split(",");
+    for (String name : names) {
+      inserted.add(insert(name));
+    }
+
+    ServerCacheManager serverCacheManager = Ebean.getDefaultServer().getServerCacheManager();
+    ServerCache beanCache = serverCacheManager.getBeanCache(UUOne.class);
+    beanCache.clear();
+
+    UUOne b = Ebean.find(UUOne.class, inserted.get(1).getId());
+    assertNotNull(b);
+
+    UUOne b2 = Ebean.find(UUOne.class, inserted.get(1).getId());
+    assertNotNull(b2);
+    ServerCacheStatistics statistics = beanCache.getStatistics(true);
+    assertEquals(statistics.getHitCount(), 1);
+
+    UUOne c = Ebean.find(UUOne.class)
+      .where().idEq(inserted.get(2).getId())
+      .findUnique();
+    assertNotNull(c);
+
+    UUOne c2 = Ebean.find(UUOne.class)
+      .where().idEq(inserted.get(2).getId())
+      .findUnique();
+    assertNotNull(c2);
+    statistics = beanCache.getStatistics(true);
+    assertEquals(statistics.getHitCount(), 1);
+
+    LoggedSqlCollector.start();
+
+    List<UUOne> list = Ebean.find(UUOne.class)
+      //.setDefaultLazyLoadBatchSize(5)
+      .select("id")
+      .where().startsWith("name", "testBLWCH")
+      .order("name")
+      .findList();
+
+    for (UUOne uuOne : list) {
+      uuOne.getName();
+    }
+    list.get(0).getName();
+
+    List<String> sql = LoggedSqlCollector.stop();
+    System.out.println("sql:" + sql);
+
+    // batch lazy loading into cache
+    assertThat(sql).hasSize(2);
+    assertThat(sql.get(0)).contains("from uuone t0 where t0.name like ?");
+    assertThat(sql.get(1)).contains("from uuone t0 where t0.id in (?,");
+
+    statistics = beanCache.getStatistics(true);
+    assertThat(statistics.getSize()).isGreaterThan(3);
+  }
+
+}