1 files changed, 31 insertions, 0 deletions
diff --git a/sdc-workflow-designer-ui/src/app/services/data-access/catalog.service.ts b/sdc-workflow-designer-ui/src/app/services/data-access/catalog.service.ts
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+++ b/sdc-workflow-designer-ui/src/app/services/data-access/catalog.service.ts
@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2017 ZTE Corporation.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and the Apache License 2.0 which both accompany this distribution,
+ * and are available at http://www.eclipse.org/legal/epl-v10.html
+ * and http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Contributors:
+ *     ZTE - initial API and implementation and/or initial documentation
+ */
+
+import { Injectable } from '@angular/core';
+import { WorkflowNode } from "../../model/workflow-node";
+import { Observable } from "rxjs/Observable";
+import { HttpService } from "../../util/http.service";
+import { Workflow } from "../../model/workflow";
+
+/**
+ * CatalogService
+ * provides data access from backend
+ */
+@Injectable()
+export abstract class CatalogService {
+
+    constructor(protected httpService: HttpService) {}
+
+    public abstract loadWorkflow(workflowId: string): Observable<Workflow>;
+
+    public abstract saveWorkflow(workflow: Workflow): Observable<boolean>;
+}