#219 - Update PagedList javadoc - enable foreground query for getTotalRowCount() when loadRowCount() has not been used

src/test/java/com/avaje/ebean/elasticsearch/TestBasicPush.java

@@ -0,0 +1,7 @@
+package com.avaje.ebean.elasticsearch;
+
+/**
+ * Created by rob on 2/12/14.
+ */
+public class TestBasicPush {
+}

src/test/java/com/avaje/tests/query/TestQueryFindPagedList.java

@@ -0,0 +1,132 @@
+package com.avaje.tests.query;
+
+import com.avaje.ebean.BaseTestCase;
+import com.avaje.ebean.Ebean;
+import com.avaje.ebean.PagedList;
+import com.avaje.tests.model.basic.Order;
+import com.avaje.tests.model.basic.ResetBasicData;
+import org.avaje.ebeantest.LoggedSqlCollector;
+import org.junit.Test;
+
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+
+public class TestQueryFindPagedList extends BaseTestCase {
+
+  @Test
+  public void test_noCount() throws ExecutionException, InterruptedException {
+
+    ResetBasicData.reset();
+
+    PagedList<Order> pagedList = Ebean.find(Order.class).findPagedList(0, 3);
+
+    LoggedSqlCollector.start();
+
+    List<Order> orders = pagedList.getList();
+
+    assertTrue(!orders.isEmpty());
+    List<String> loggedSql = LoggedSqlCollector.stop();
+
+    assertEquals("Only 1 SQL statement, no count query",1, loggedSql.size());
+  }
+
+  @Test
+  public void test_countInBackground() throws ExecutionException, InterruptedException, TimeoutException {
+
+    ResetBasicData.reset();
+
+    PagedList<Order> pagedList = Ebean.find(Order.class).findPagedList(0, 3);
+
+    LoggedSqlCollector.start();
+
+    Future<Integer> rowCount = pagedList.getFutureRowCount();
+    List<Order> orders = pagedList.getList();
+
+    // these are each getting the total row count
+    int totalRowCount = pagedList.getTotalRowCount();
+    Integer totalRowCountWithTimeout = rowCount.get(30, TimeUnit.SECONDS);
+    Integer totalRowCountViaFuture = rowCount.get();
+
+    List<String> loggedSql = LoggedSqlCollector.stop();
+
+    assertTrue(orders.size() < totalRowCount);
+    assertEquals(Integer.valueOf(totalRowCount), totalRowCountViaFuture);
+    assertEquals(Integer.valueOf(totalRowCount), totalRowCountWithTimeout);
+    assertEquals(2, loggedSql.size());
+
+    String firstTxn = loggedSql.get(0).substring(0, 10);
+    String secTxn = loggedSql.get(1).substring(0, 10);
+
+    assertNotEquals(firstTxn, secTxn);
+  }
+
+
+  @Test
+  public void test_countInBackground_withLoadRowCount() {
+
+    ResetBasicData.reset();
+
+    PagedList<Order> pagedList = Ebean.find(Order.class).findPagedList(0, 3);
+
+    LoggedSqlCollector.start();
+
+    pagedList.loadRowCount();
+    List<Order> orders = pagedList.getList();
+    int totalRowCount = pagedList.getTotalRowCount();
+
+    List<String> loggedSql = LoggedSqlCollector.stop();
+
+    assertTrue(orders.size() < totalRowCount);
+    assertEquals(2, loggedSql.size());
+
+    String firstTxn = loggedSql.get(0).substring(0, 10);
+    String secTxn = loggedSql.get(1).substring(0, 10);
+
+    assertNotEquals(firstTxn, secTxn);
+  }
+
+
+  @Test
+  public void test_countUsingForegound() throws ExecutionException, InterruptedException {
+
+    ResetBasicData.reset();
+
+    PagedList<Order> pagedList = Ebean.find(Order.class).findPagedList(0, 3);
+
+    LoggedSqlCollector.start();
+
+    // kinda not normal but just wrap in a transaction to assert
+    // the background fetch does not occur (which explicitly creates
+    // its own transaction) ... so a bit naughty with the test here
+    Ebean.beginTransaction();
+    try {
+
+      List<Order> orders = pagedList.getList();
+      int totalRowCount = pagedList.getTotalRowCount();
+
+      // invoke it again but cached...
+      int totalRowCountAgain = pagedList.getTotalRowCount();
+
+      List<String> loggedSql = LoggedSqlCollector.stop();
+
+      assertTrue(orders.size() < totalRowCount);
+      assertEquals(2, loggedSql.size());
+      assertEquals(totalRowCount, totalRowCountAgain);
+
+      String firstTxn = loggedSql.get(0).substring(0, 10);
+      String secTxn = loggedSql.get(1).substring(0, 10);
+
+      assertEquals(firstTxn, secTxn);
+
+    } finally {
+      Ebean.endTransaction();
+    }
+  }
+}