#919 - io.ebean package initial

src/test/java/org/tests/query/TestQueryExists.java

@@ -0,0 +1,91 @@
+package org.tests.query;
+
+import io.ebean.BaseTestCase;
+import io.ebean.Ebean;
+import io.ebean.Query;
+import org.tests.model.basic.Customer;
+import org.tests.model.basic.Order;
+import org.tests.model.basic.ResetBasicData;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TestQueryExists extends BaseTestCase {
+
+  @Test
+  public void testExists_orders_onOneToMany() {
+
+    ResetBasicData.reset();
+
+    Query<Order> query = Ebean.find(Order.class)
+      .where().raw("exists (select 1 from o_order_detail where order_id = t0.id)")
+      .query();
+
+    List<Order> ordersThatHave = query.findList();
+
+    Query<Order> query2 = Ebean.find(Order.class)
+      .where().raw("not exists (select 1 from o_order_detail where order_id = t0.id)")
+      .query();
+
+    List<Order> ordersThatDontHave = query2.findList();
+
+    assertThat(query.getGeneratedSql()).contains(" exists (");
+    assertThat(query2.getGeneratedSql()).contains(" not exists (");
+
+    assertThat(ordersThatHave).isNotEmpty();
+    assertThat(ordersThatDontHave).isNotEmpty();
+  }
+
+  @Test
+  public void testExists_onOneToMany() {
+
+    ResetBasicData.reset();
+
+    Query<Customer> query = Ebean.find(Customer.class)
+      .where().raw("exists (select 1 from contact where customer_id = t0.id)")
+      .query();
+
+    List<Customer> customersWithContacts = query.findList();
+
+    Query<Customer> query2 = Ebean.find(Customer.class)
+      .where().raw("not exists (select 1 FROM contact where customer_id = t0.id)")
+      .query();
+
+    query2.findList();
+
+    assertThat(query.getGeneratedSql()).contains(" exists (");
+    assertThat(query2.getGeneratedSql()).contains(" not exists (");
+
+    assertThat(customersWithContacts).isNotEmpty();
+  }
+
+  @Test
+  public void testExists() {
+    ResetBasicData.reset();
+
+    Query<Order> subQuery = Ebean.find(Order.class).alias("sq").select("id").where().raw("sq.kcustomer_id = qt.id").query();
+
+    Query<Customer> query = Ebean.find(Customer.class).alias("qt").where().exists(subQuery).query();
+
+    query.findList();
+    String sql = query.getGeneratedSql();
+
+    Assert.assertTrue(sql.indexOf("exists (") > 0);
+  }
+
+  @Test
+  public void testNotExists() {
+    ResetBasicData.reset();
+
+    Query<Order> subQuery = Ebean.find(Order.class).alias("sq").select("id").where().raw("sq.kcustomer_id = qt.id").query();
+    Query<Customer> query = Ebean.find(Customer.class).alias("qt").where().notExists(subQuery).query();
+
+    query.findList();
+    String sql = query.getGeneratedSql();
+
+    Assert.assertTrue(sql.indexOf("not exists (") > 0);
+  }
+}