Add Serializer interface

Added missing Serializer interface, needed by other gson classes.

Change-Id: I4c37dea89011a833d71c11e2d2c4d74ad768e750
Issue-ID: POLICY-1428
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/gson/src/main/java/org/onap/policy/common/gson/internal/Serializer.java b/gson/src/main/java/org/onap/policy/common/gson/internal/Serializer.java
new file mode 100644
index 00000000..2e2782ad
--- /dev/null
+++ b/gson/src/main/java/org/onap/policy/common/gson/internal/Serializer.java
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.gson.internal;
+
+import com.google.gson.JsonObject;
+
+/**
+ * Super class of all serializers.
+ */
+public interface Serializer {
+
+    /**
+     * Converts an object and then adds it to a tree.
+     *
+     * @param source object to be converted
+     * @param target tree into which to place the converted object
+     */
+    void addToTree(Object source, JsonObject target);
+
+}