HONEYCOMB-270 Add isPresent() to Readers/Customizers

So that they can influence whether empty data is to be considered as present

+ Move registries implementations from util to impl
+ Introduce DelegatingReader trait
+ Extend GenericReader where possible to reduce duplication

Change-Id: I5a416acd0c4eab1fbc30fcbe585719991dbe9215
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/infra/translate-impl/src/test/java/io/fd/honeycomb/translate/impl/read/registry/TypeHierarchyTest.java b/infra/translate-impl/src/test/java/io/fd/honeycomb/translate/impl/read/registry/TypeHierarchyTest.java
new file mode 100644
index 000000000..bbccc488b
--- /dev/null
+++ b/infra/translate-impl/src/test/java/io/fd/honeycomb/translate/impl/read/registry/TypeHierarchyTest.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.translate.impl.read.registry;
+
+import static org.hamcrest.CoreMatchers.hasItem;
+import static org.hamcrest.CoreMatchers.hasItems;
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+import com.google.common.collect.Sets;
+import io.fd.honeycomb.translate.util.DataObjects;
+import org.hamcrest.CoreMatchers;
+import org.junit.Test;
+
+public class TypeHierarchyTest {
+
+    @Test
+    public void testHierarchy() throws Exception {
+        final TypeHierarchy typeHierarchy = TypeHierarchy.create(Sets.newHashSet(
+                DataObjects.DataObject4.DataObject41.DataObject411.IID,
+                DataObjects.DataObject4.DataObject41.IID,/* Included in previous already */
+                DataObjects.DataObject1.IID,
+                DataObjects.DataObject3.DataObject31.IID));
+
+        // Roots
+        assertThat(typeHierarchy.getRoots().size(), is(3));
+        assertThat(typeHierarchy.getRoots(), CoreMatchers
+                .hasItems(DataObjects.DataObject1.IID, DataObjects.DataObject3.IID, DataObjects.DataObject4.IID));
+
+        // Leaves
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject1.IID).size(), is(0));
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject3.DataObject31.IID).size(), is(0));
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject4.DataObject41.DataObject411.IID).size(), is(0));
+
+        // Intermediate leaves
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject3.IID).size(), is(1));
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject3.IID), CoreMatchers
+                .hasItem(DataObjects.DataObject3.DataObject31.IID));
+        assertEquals(typeHierarchy.getDirectChildren(DataObjects.DataObject3.IID), typeHierarchy.getAllChildren(
+                DataObjects.DataObject3.IID));
+
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject4.DataObject41.IID).size(), is(1));
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject4.DataObject41.IID), CoreMatchers.hasItem(
+                DataObjects.DataObject4.DataObject41.DataObject411.IID));
+        assertEquals(typeHierarchy.getDirectChildren(DataObjects.DataObject4.DataObject41.IID), typeHierarchy.getAllChildren(
+                DataObjects.DataObject4.DataObject41.IID));
+
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject4.IID).size(), is(1));
+        assertThat(typeHierarchy.getDirectChildren(DataObjects.DataObject4.IID), CoreMatchers
+                .hasItem(DataObjects.DataObject4.DataObject41.IID));
+        assertThat(typeHierarchy.getAllChildren(DataObjects.DataObject4.IID).size(), is(2));
+        assertTrue(typeHierarchy.getAllChildren(DataObjects.DataObject4.IID).contains(DataObjects.DataObject4.DataObject41.IID));
+        assertTrue(typeHierarchy.getAllChildren(DataObjects.DataObject4.IID).contains(DataObjects.DataObject4.DataObject41.DataObject411.IID));
+    }
+}
+