1 files changed, 36 insertions, 0 deletions
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/api/DerivedFromOperation.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/api/DerivedFromOperation.java
new file mode 100644
index 0000000000..0dc03ad363
--- /dev/null
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/api/DerivedFromOperation.java
@@ -0,0 +1,36 @@
+package org.openecomp.sdc.be.model.operations.api;
+
+import fj.data.Either;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphRelation;
+import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
+
+public interface DerivedFromOperation {
+
+    /**
+     *
+     * @param parentUniqueId the unique id of the object which is the parent of the derived from object
+     * @param derivedFromUniqueId the unique id of the derived from object
+     * @param nodeType the type of the derived from and its parent objects
+     * @return the status of the operation
+     */
+    Either<GraphRelation, StorageOperationStatus> addDerivedFromRelation(String parentUniqueId, String derivedFromUniqueId, NodeTypeEnum nodeType);
+
+    /**
+     *
+     * @param uniqueId the id of the entity of which to fetch its derived from object
+     * @param nodeType the type of the derived from object
+     * @param clazz the class which represent the derived from object
+     * @return the derived from object or error status of operation failed
+     */
+    <T extends GraphNode> Either<T, StorageOperationStatus> getDerivedFromChild(String uniqueId, NodeTypeEnum nodeType, Class<T> clazz);
+
+    /**
+     *
+     * @param uniqueId the id of the entity of which to remove its derived from object
+     * @param derivedFromUniqueId the unique id of the derived from object
+     * @param nodeType the type of the derived from and its parent objects
+     * @return the status of the remove operation. if no derived from relation exists the operation is successful.
+     */
+    StorageOperationStatus removeDerivedFromRelation(String uniqueId, String derivedFromUniqueId, NodeTypeEnum nodeType);
+}