1 files changed, 181 insertions, 0 deletions
diff --git a/bpmn/so-bpmn-building-blocks/src/test/java/org/onap/so/SerializableChecker.java b/bpmn/so-bpmn-building-blocks/src/test/java/org/onap/so/SerializableChecker.java
new file mode 100644
index 0000000000..97c17d5238
--- /dev/null
+++ b/bpmn/so-bpmn-building-blocks/src/test/java/org/onap/so/SerializableChecker.java
@@ -0,0 +1,181 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2017 - 2018 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.so;
+
+import java.io.Serializable;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public final class SerializableChecker
+{
+    public static class SerializationFailure
+    {
+        private final String mContainingClass;
+        private final String mMemberName;
+
+        public SerializationFailure(String inNonSerializableClass, String inMemberName)
+        {
+            mContainingClass = inNonSerializableClass;
+            mMemberName = inMemberName;
+        }
+
+        public String getContainingClass()
+        {
+            return mContainingClass;
+        }
+
+        public String getMemberName()
+        {
+            return mMemberName;
+        }
+
+        public String getBadMemberString()
+        {
+            if (mMemberName == null)
+                return mContainingClass;
+            return mContainingClass + "." + mMemberName;
+        }
+
+        @Override
+        public String toString()
+        {
+            return "SerializationFailure [mNonSerializableClass=" + mContainingClass + ", mMemberName=" + mMemberName + "]";
+        }
+    }
+
+    private static class SerializationCheckerData
+    {
+        private Set<Class<?>> mSerializableClasses;
+
+        SerializationCheckerData()
+        {
+            mSerializableClasses = new HashSet<Class<?>>();
+        }
+
+        boolean isAlreadyChecked(Class<?> inClass)
+        {
+            return mSerializableClasses.contains(inClass);
+        }
+
+        void addSerializableClass(Class<?> inClass)
+        {
+            mSerializableClasses.add(inClass);
+        }
+    }
+
+    private SerializableChecker()
+    { }
+
+    public static SerializationFailure isFullySerializable(Class<?> inClass)
+    {
+        if (!isSerializable(inClass))
+            return new SerializationFailure(inClass.getName(), null);
+
+        return isFullySerializable(inClass, new SerializationCheckerData());
+    }
+
+    private static SerializationFailure isFullySerializable(Class<?> inClass, SerializationCheckerData inSerializationCheckerData)
+    {
+        for (Field field : declaredFields(inClass))
+        {
+            Class<?> fieldDeclaringClass = field.getType();
+
+            if (field.getType() == Object.class)
+                continue;
+
+            if (Modifier.isStatic(field.getModifiers()))
+                continue;
+
+            if (field.isSynthetic())
+                continue;
+
+            if (fieldDeclaringClass.isInterface() || fieldDeclaringClass.isPrimitive())
+                continue;
+
+            if (Modifier.isAbstract(field.getType().getModifiers()))
+                continue;
+
+            if (inSerializationCheckerData.isAlreadyChecked(fieldDeclaringClass))
+                continue;
+
+            if (isSerializable(fieldDeclaringClass))
+            {
+                inSerializationCheckerData.addSerializableClass(inClass);
+
+                SerializationFailure failure = isFullySerializable(field.getType(), inSerializationCheckerData);
+                if (failure != null)
+                    return failure;
+                else
+                    continue;
+            }
+
+            if (Modifier.isTransient(field.getModifiers()))
+                continue;
+
+            return new SerializationFailure(field.getDeclaringClass().getName(), field.getName());
+        }
+        return null;
+    }
+
+    private static boolean isSerializable(Class<?> inClass)
+    {
+        Set<Class<?>> interfaces = getInterfaces(inClass);
+        if (interfaces == null)
+            return false;
+        boolean isSerializable = interfaces.contains(Serializable.class);
+        if (isSerializable)
+            return true;
+
+        for (Class<?> classInterface : interfaces)
+        {
+            if (isSerializable(classInterface))
+                return true;
+        }
+
+        if (inClass.getSuperclass() != null && isSerializable(inClass.getSuperclass()))
+            return true;
+
+        return false;
+    }
+
+    private static Set<Class<?>> getInterfaces(Class<?> inFieldDeclaringClass)
+    {
+        return new HashSet<Class<?>>(Arrays.asList(inFieldDeclaringClass.getInterfaces()));
+    }
+
+    private static List<Field> declaredFields(Class<?> inClass)
+    {
+        List<Field> fields = new ArrayList<Field>(Arrays.asList(inClass.getDeclaredFields()));
+
+        Class<?> parentClasses = inClass.getSuperclass();
+
+        if (parentClasses == null)
+            return fields;
+        fields.addAll(declaredFields(parentClasses));
+
+        return fields;
+        }
+    }