Third part of onap rename

[appc.git] / appc-common / src / main / java / org / onap / appc / util / ObjectMapper.java

diff --git a/appc-common/src/main/java/org/onap/appc/util/ObjectMapper.java b/appc-common/src/main/java/org/onap/appc/util/ObjectMapper.java
new file mode 100644 (file)
index 0000000..df0b24a
--- /dev/null
+++ b/appc-common/src/main/java/org/onap/appc/util/ObjectMapper.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.util;
+
+import java.lang.reflect.Array;
+import java.util.Map;
+
+public class ObjectMapper {
+
+       private ObjectMapper() {
+       }
+
+       private static void dispatch(PathContext context, Object obj) {
+
+               if (obj == null) {
+                       return;
+               }
+
+               final Class<?> cls = obj.getClass();
+
+               if (cls.isPrimitive()
+                               || String.class.isAssignableFrom(cls)
+                               || Number.class.isAssignableFrom(cls)
+                               || Boolean.class.isAssignableFrom(cls)) {
+                       handlePrimitive(context, obj);
+               } else if (cls.isArray()) {
+                       handleArray(context, obj);
+               } else if (Map.class.isAssignableFrom(cls)) {
+                       handleMap(context, (Map<?, ?>) obj);
+               } else if (Iterable.class.isAssignableFrom(cls)) {
+                       handleCollection(context, Iterable.class.cast(obj));
+               } else {
+                       throw new IllegalArgumentException(obj.getClass().getName());
+               }
+       }
+
+       public static Map<String, String> map(Object obj) {
+               PathContext context = new PathContext();
+               dispatch(context, obj);
+               return context.entries();
+       }
+
+       private static void handleMap(PathContext context, Map<?, ?> val) {
+               for (Map.Entry<?, ?> entry : val.entrySet()) {
+                       context.pushToken(entry.getKey().toString());
+                       dispatch(context, entry.getValue());
+                       context.popToken();
+               }
+       }
+
+       private static void handleCollection(PathContext context, Iterable<?> val) {
+               int index = 0;
+               for (Object elem : val) {
+                       handleElement(context, index++, elem);
+               }
+       }
+
+       private static void handleArray(PathContext context, Object val) {
+               for (int i = 0, n = Array.getLength(val); i < n; i++) {
+                       handleElement(context, i, Array.get(val, i));
+               }
+       }
+
+       private static void handleElement(PathContext context, int index, Object val) {
+               if (val == null) {
+                       return;
+               }
+
+               String modifier = new StringBuilder().append('[').append(Integer.valueOf(index)).append(']').toString();
+
+               context.pushModifier(modifier);
+               dispatch(context, val);
+               context.popModifier();
+       }
+
+       private static void handlePrimitive(PathContext context, Object val) {
+               context.entry(context.getPath(), val.toString());
+       }
+}