1 files changed, 49 insertions, 0 deletions
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/instance/ExternalRefsMergeBL.java b/catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/instance/ExternalRefsMergeBL.java
new file mode 100644
index 0000000000..e9c4364181
--- /dev/null
+++ b/catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/instance/ExternalRefsMergeBL.java
@@ -0,0 +1,49 @@
+package org.openecomp.sdc.be.components.merge.instance;
+
+import fj.data.Either;
+import org.openecomp.sdc.be.components.impl.exceptions.ComponentException;
+import org.openecomp.sdc.be.dao.api.ActionStatus;
+import org.openecomp.sdc.be.model.Component;
+import org.openecomp.sdc.be.model.ComponentInstance;
+import org.openecomp.sdc.be.model.User;
+import org.openecomp.sdc.be.model.jsontitan.operations.ExternalReferencesOperation;
+import org.openecomp.sdc.exception.ResponseFormat;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+import static org.apache.commons.collections.MapUtils.isEmpty;
+
+@org.springframework.stereotype.Component
+public class ExternalRefsMergeBL implements ComponentInstanceMergeInterface {
+
+    private final ExternalReferencesOperation externalReferencesOperation;
+
+    ExternalRefsMergeBL(ExternalReferencesOperation externalReferencesOperation) {
+        this.externalReferencesOperation = externalReferencesOperation;
+    }
+
+    @Override
+    public void saveDataBeforeMerge(DataForMergeHolder dataHolder, Component containerComponent,
+                                    ComponentInstance currentResourceInstance, Component originComponent) {
+        Map<String, List<String>> externalRefs = externalReferencesOperation.getAllExternalReferences(containerComponent.getUniqueId(),
+                currentResourceInstance.getUniqueId());
+        dataHolder.setOrigComponentInstanceExternalRefs(externalRefs);
+    }
+
+    @Override
+    public Either<Component, ResponseFormat> mergeDataAfterCreate(User user, DataForMergeHolder dataHolder, Component updatedContainerComponent, String newInstanceId) {
+        Optional<ComponentInstance> componentInstance = updatedContainerComponent.getComponentInstanceById(newInstanceId);
+        if (!componentInstance.isPresent()) {
+            throw new ComponentException(ActionStatus.COMPONENT_INSTANCE_NOT_FOUND,
+                    newInstanceId);
+        }
+        Map<String, List<String>>  savedExternalRefs = dataHolder.getOrigCompInstExternalRefs();
+        if (!isEmpty(savedExternalRefs)) {
+            externalReferencesOperation.addAllExternalReferences(updatedContainerComponent.getUniqueId(),
+                    componentInstance.get().getUniqueId(), savedExternalRefs);
+        }
+        return Either.left(updatedContainerComponent);
+    }
+}