Fix creation of sub Avro items

When an Avro object is created, nested sub avro objects
are not created automatically. This change allows
invocation of a method to create sub objects of Avro
objects.

Issue-ID: POLICY-954
Change-Id: Ie510867f2631ba6a8c6f5452c08aef5db67e8997
Signed-off-by: liamfallon <liam.fallon@ericsson.com>

4 files changed, 24 insertions, 2 deletions

diff --git a/context/context-management/src/main/java/org/onap/policy/apex/context/SchemaHelper.java b/context/context-management/src/main/java/org/onap/policy/apex/context/SchemaHelper.java
index 44ec06c6d..b6d21a20d 100644
--- a/context/context-management/src/main/java/org/onap/policy/apex/context/SchemaHelper.java
+++ b/context/context-management/src/main/java/org/onap/policy/apex/context/SchemaHelper.java
@@ -92,6 +92,14 @@ public interface SchemaHelper {
     Object createNewInstance(Object incomingObject);
 
     /**
+     * Create an object of a sub type of this object.
+     * 
+     * @param subType the sub type definition of this type
+     * @return a new object of the sub type
+     */
+    Object createNewSubInstance(String subType);
+
+    /**
      * Unmarshal an object in schema format into a Java object.
      *
      * @param object the object as a Java object
diff --git a/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/AbstractSchemaHelper.java b/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/AbstractSchemaHelper.java
index f50eb5914..6d98313ed 100644
--- a/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/AbstractSchemaHelper.java
+++ b/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/AbstractSchemaHelper.java
@@ -22,6 +22,7 @@ package org.onap.policy.apex.context.impl.schema;
 
 import java.lang.reflect.Constructor;
 
+import org.apache.commons.lang3.NotImplementedException;
 import org.onap.policy.apex.context.ContextRuntimeException;
 import org.onap.policy.apex.context.SchemaHelper;
 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
@@ -169,4 +170,12 @@ public abstract class AbstractSchemaHelper implements SchemaHelper {
             throw new ContextRuntimeException(returnString);
         }
     }
+    
+    /* (non-Javadoc)
+     * @see org.onap.policy.apex.context.SchemaHelper#createNewSubInstance(java.lang.String)
+     */
+    @Override
+    public Object createNewSubInstance(String subType) {
+        throw new NotImplementedException("sub types are not supported on this schema helper");
+    }
 }
diff --git a/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelper.java b/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelper.java
index 8b61f718a..fcc7c4d60 100644
--- a/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelper.java
+++ b/context/context-management/src/main/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelper.java
@@ -279,5 +279,4 @@ public class JavaSchemaHelper extends AbstractSchemaHelper {
 
         return gsonBuilder.create();
     }
-
 }
diff --git a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperInstanceCreationTest.java b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperInstanceCreationTest.java
index 800a7011d..14d44ee8b 100644
--- a/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperInstanceCreationTest.java
+++ b/context/context-management/src/test/java/org/onap/policy/apex/context/impl/schema/java/JavaSchemaHelperInstanceCreationTest.java
@@ -96,7 +96,6 @@ public class JavaSchemaHelperInstanceCreationTest {
         }
         assertEquals(true, schemaHelper0.createNewInstance("true"));
 
-
         try {
             schemaHelper1.createNewInstance();
             fail("this test should throw an exception here");
@@ -108,5 +107,12 @@ public class JavaSchemaHelperInstanceCreationTest {
 
         assertEquals("", schemaHelper2.createNewInstance());
         assertEquals("true", schemaHelper2.createNewInstance("true"));
+
+        try {
+            schemaHelper1.createNewSubInstance("SomeSubtype");
+            fail("this test should throw an exception here");
+        } catch (final Exception e) {
+            assertEquals("sub types are not supported on this schema helper", e.getMessage());
+        }
     }
 }