1 files changed, 67 insertions, 0 deletions
diff --git a/common/src/main/java/org/openecomp/mso/utils/RootIgnoringJsonDeserializer.java b/common/src/main/java/org/openecomp/mso/utils/RootIgnoringJsonDeserializer.java
new file mode 100644
index 0000000000..95f72c4dd4
--- /dev/null
+++ b/common/src/main/java/org/openecomp/mso/utils/RootIgnoringJsonDeserializer.java
@@ -0,0 +1,67 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2017 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.openecomp.mso.utils;
+
+import java.io.IOException;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonRootName;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/**
+ * A JSON deserializer that ignores the root element if it is present.
+ */
+public class RootIgnoringJsonDeserializer<T> extends JsonDeserializer<T> {
+
+	private final ObjectMapper mapper = new ObjectMapper();
+	private final Class<T> clazz;
+	private final String jsonRootName;
+
+	public RootIgnoringJsonDeserializer(Class<T> clazz) {
+		this.clazz = clazz;
+
+		JsonRootName annotation = clazz.getAnnotation(JsonRootName.class);
+		
+		if (annotation == null || annotation.value() == null || annotation.value().equals("")) {
+			jsonRootName = clazz.getSimpleName();
+		} else {
+			jsonRootName = annotation.value();
+		}
+	}
+
+	@Override
+	public T deserialize(JsonParser jp, DeserializationContext dc) 
+			throws IOException, JsonProcessingException {
+	   JsonNode rootNode = jp.getCodec().readTree(jp);
+	   Map.Entry<String,JsonNode> field = rootNode.fields().next();
+
+	   if (jsonRootName.equals(field.getKey())) {
+		   rootNode = field.getValue();
+	   }
+
+	   return mapper.convertValue(rootNode, clazz);
+	}
+}
+\ No newline at end of file