#1427 - QueryCache should be cleared, if one of a dependent bean is updated

Initial work, does not include propagation across cluster.

src/test/java/org/tests/cache/TestQueryCacheTableDependency.java

@@ -0,0 +1,59 @@
+package org.tests.cache;
+
+import io.ebean.BaseTestCase;
+import io.ebean.Ebean;
+import io.ebean.cache.ServerCache;
+import org.junit.Test;
+import org.tests.model.basic.Address;
+import org.tests.model.basic.Customer;
+import org.tests.model.basic.ResetBasicData;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TestQueryCacheTableDependency extends BaseTestCase {
+
+  @Test
+  public void testFindCountOnDependent() {
+
+    ResetBasicData.reset();
+
+    ServerCache customerCache = Ebean.getServerCacheManager().getQueryCache(Customer.class);
+    customerCache.clear();
+
+    List<Address> addrs = Ebean.find(Address.class)
+      .where().eq("line2", "St Lukes")
+      .findList();
+
+    int custs = Ebean.find(Customer.class).setUseQueryCache(true).setReadOnly(true)
+      .where().eq("billingAddress.line2", "St Lukes")
+      .findCount();
+
+    assertThat(custs).isEqualTo(3);
+
+    custs = Ebean.find(Customer.class).setUseQueryCache(true).setReadOnly(true)
+      .where().eq("billingAddress.line2", "St Lukes")
+      .findCount();
+
+    assertThat(custs).isEqualTo(3);
+
+    Address a1 = addrs.get(0);
+    a1.setLine2("St Lucky");
+    Ebean.save(a1);
+
+    custs = Ebean.find(Customer.class).setUseQueryCache(true).setReadOnly(true)
+      .where().eq("billingAddress.line2", "St Lukes")
+      .findCount();
+
+    assertThat(custs).isEqualTo(2); // cache says 3
+
+
+    custs = Ebean.find(Customer.class).setUseQueryCache(true).setReadOnly(true)
+      .where().eq("billingAddress.line2", "St Lucky")
+      .findCount();
+
+    assertThat(custs).isEqualTo(1);
+
+  }
+}

src/test/java/org/tests/model/basic/Address.java

@@ -1,5 +1,6 @@
 package org.tests.model.basic;
 
+import io.ebean.annotation.InvalidateQueryCache;
 import org.tests.model.basic.metaannotation.SizeMedium;
 
 import javax.persistence.Column;
@@ -14,6 +15,11 @@ import java.sql.Timestamp;
 /**
  * Address entity bean.
  */
+// Address is not L2 cached directly but it is joined to queries that are cached
+// What InvalidateQueryCache means is that we propagate a table modification event
+// when address is changed ... and cached queries that join to address will be
+// invalidated accordingly.
+@InvalidateQueryCache
 @Entity
 @Table(name = "o_address")
 public class Address {