#115 - Mapping - Add support for @ElementCollection enhancement

Add element collection L2 cache support

src/test/java/org/tests/model/elementcollection/TestElementCollectionBasicCache.java

@@ -0,0 +1,80 @@
+package org.tests.model.elementcollection;
+
+import io.ebean.Ebean;
+import org.ebeantest.LoggedSqlCollector;
+import org.junit.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TestElementCollectionBasicCache {
+
+  @Test
+  public void test() {
+
+    EcPerson person = new EcPerson("Cache1");
+    person.getPhoneNumbers().add("021 1234");
+    person.getPhoneNumbers().add("021 4321");
+    Ebean.save(person);
+
+    EcPerson one = Ebean.find(EcPerson.class)
+      .setId(person.getId())
+      .findOne();
+
+    one.getPhoneNumbers().size();
+
+    LoggedSqlCollector.start();
+
+    EcPerson two = Ebean.find(EcPerson.class)
+      .setId(person.getId())
+      .findOne();
+
+    two.setName("CacheMod");
+    two.getPhoneNumbers().add("027 234234");
+
+    List<String> sql = LoggedSqlCollector.current();
+    assertThat(sql).isEmpty(); // cache hit containing phone numbers
+
+    Ebean.save(two);
+
+    sql = LoggedSqlCollector.current();
+    assertThat(sql).hasSize(3);
+
+    Ebean.save(two);
+
+    sql = LoggedSqlCollector.current();
+    assertThat(sql).isEmpty(); // no change
+
+    EcPerson three = Ebean.find(EcPerson.class)
+      .setId(person.getId())
+      .findOne();
+
+    assertThat(three.getName()).isEqualTo("CacheMod");
+    assertThat(three.getPhoneNumbers()).contains("021 1234", "021 4321", "027 234234");
+
+    sql = LoggedSqlCollector.current();
+    assertThat(sql).isEmpty(); // cache hit
+
+    three.getPhoneNumbers().add("09 6534");
+    Ebean.save(three);
+
+    sql = LoggedSqlCollector.current();
+    assertThat(sql).hasSize(2); // cache hit
+
+    EcPerson four = Ebean.find(EcPerson.class)
+      .setId(person.getId())
+      .fetch("phoneNumbers")
+      .findOne();
+
+    assertThat(four.getName()).isEqualTo("CacheMod");
+    assertThat(four.getPhoneNumbers()).contains("021 1234", "021 4321", "027 234234", "09 6534");
+
+    sql = LoggedSqlCollector.current();
+    assertThat(sql).isEmpty(); // cache hit
+
+    Ebean.delete(four);
+
+    LoggedSqlCollector.stop();
+  }
+}