Add Start and Stop sessions on JAVA API

[cps.git] / cps-service / src / main / java / org / onap / cps / api / CpsDataService.java

diff --git a/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java b/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
index 31a7517..35caf95 100644 (file)
--- a/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
+++ b/cps-service/src/main/java/org/onap/cps/api/CpsDataService.java
@@ -1,8 +1,8 @@
 /*
  *  ============LICENSE_START=======================================================
- *  Copyright (C) 2020 Nordix Foundation
+ *  Copyright (C) 2020-2022 Nordix Foundation
  *  Modifications Copyright (C) 2021 Pantheon.tech
- *  Modifications Copyright (C) 2021 Bell Canada
+ *  Modifications Copyright (C) 2021-2022 Bell Canada
  *  ================================================================================
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 package org.onap.cps.api;
 
 import java.time.OffsetDateTime;
-import org.checkerframework.checker.nullness.qual.NonNull;
+import java.util.Collection;
 import org.onap.cps.spi.FetchDescendantsOption;
 import org.onap.cps.spi.model.DataNode;
 
@@ -40,8 +40,7 @@ public interface CpsDataService {
      * @param jsonData      json data
      * @param observedTimestamp observedTimestamp
      */
-    void saveData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String jsonData,
-        OffsetDateTime observedTimestamp);
+    void saveData(String dataspaceName, String anchorName, String jsonData, OffsetDateTime observedTimestamp);
 
     /**
      * Persists child data fragment under existing data node for the given anchor and dataspace.
@@ -52,21 +51,21 @@ public interface CpsDataService {
      * @param jsonData        json data
      * @param observedTimestamp observedTimestamp
      */
-    void saveData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void saveData(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
-     * Persists child data fragment representing list-node (with one or more elements) under existing data node for the
+     * Persists child data fragment representing one or more list elements under existing data node for the
      * given anchor and dataspace.
      *
-     * @param dataspaceName   dataspace name
-     * @param anchorName      anchor name
-     * @param parentNodeXpath parent node xpath
-     * @param jsonData        json data representing list element
+     * @param dataspaceName     dataspace name
+     * @param anchorName        anchor name
+     * @param parentNodeXpath   parent node xpath
+     * @param jsonData          json data representing list element(s)
      * @param observedTimestamp observedTimestamp
      */
-    void saveListNodeData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void saveListElements(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Retrieves datanode by XPath for given dataspace and anchor.
@@ -78,8 +77,8 @@ public interface CpsDataService {
      *                               (recursively) as well
      * @return data node object
      */
-    DataNode getDataNode(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String xpath,
-        @NonNull FetchDescendantsOption fetchDescendantsOption);
+    DataNode getDataNode(String dataspaceName, String anchorName, String xpath,
+        FetchDescendantsOption fetchDescendantsOption);
 
     /**
      * Updates data node for given dataspace and anchor using xpath to parent node.
@@ -90,8 +89,8 @@ public interface CpsDataService {
      * @param jsonData        json data
      * @param observedTimestamp observedTimestamp
      */
-    void updateNodeLeaves(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void updateNodeLeaves(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
      * Replaces existing data node content including descendants.
@@ -102,32 +101,64 @@ public interface CpsDataService {
      * @param jsonData        json data
      * @param observedTimestamp observedTimestamp
      */
-    void replaceNodeTree(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void replaceNodeTree(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
 
     /**
-     * Replaces (if exists) child data fragment representing list-node (with one or more elements) under existing data
-     * node for the given anchor and dataspace.
+     * Replaces list content by removing all existing elements and inserting the given new elements as json
+     * under given parent, anchor and dataspace.
      *
      * @param dataspaceName     dataspace name
      * @param anchorName        anchor name
      * @param parentNodeXpath   parent node xpath
-     * @param jsonData          json data representing list element
+     * @param jsonData          json data representing the new list elements
+     * @param observedTimestamp observedTimestamp
+     */
+    void replaceListContent(String dataspaceName, String anchorName, String parentNodeXpath, String jsonData,
+        OffsetDateTime observedTimestamp);
+
+    /**
+     * Replaces list content by removing all existing elements and inserting the given new elements as data nodes
+     * under given parent, anchor and dataspace.
+     *
+     * @param dataspaceName     dataspace-name
+     * @param anchorName        anchor name
+     * @param parentNodeXpath   parent node xpath
+     * @param dataNodes         datanodes representing the updated data
      * @param observedTimestamp observedTimestamp
      */
-    void replaceListNodeData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String parentNodeXpath,
-        @NonNull String jsonData, OffsetDateTime observedTimestamp);
+    void replaceListContent(String dataspaceName, String anchorName, String parentNodeXpath,
+            Collection<DataNode> dataNodes, OffsetDateTime observedTimestamp);
 
     /**
-     * Deletes (if exists) child data fragment representing list-node (with one or more elements) under existing data
-     * node for the given anchor and dataspace.
+     * Deletes data node for given anchor and dataspace.
+     *
+     * @param dataspaceName dataspace name
+     * @param anchorName anchor name
+     * @param dataNodeXpath data node xpath
+     * @param observedTimestamp observed timestamp
+     */
+    void deleteDataNode(String dataspaceName, String anchorName, String dataNodeXpath,
+        OffsetDateTime observedTimestamp);
+
+    /**
+     * Deletes all data nodes for a given anchor in a dataspace.
+     *
+     * @param dataspaceName     dataspace name
+     * @param anchorName       anchor name
+     * @param observedTimestamp observed timestamp
+     */
+    void deleteDataNodes(String dataspaceName, String anchorName, OffsetDateTime observedTimestamp);
+
+    /**
+     * Deletes a list or a list-element under given anchor and dataspace.
      *
      * @param dataspaceName dataspace name
      * @param anchorName    anchor name
-     * @param listNodeXpath list node xpath
+     * @param listElementXpath list element xpath
      * @param observedTimestamp observedTimestamp
      */
-    void deleteListNodeData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String listNodeXpath,
+    void deleteListOrListElement(String dataspaceName, String anchorName, String listElementXpath,
         OffsetDateTime observedTimestamp);
 
     /**
@@ -143,4 +174,19 @@ public interface CpsDataService {
      */
     void updateNodeLeavesAndExistingDescendantLeaves(String dataspaceName, String anchorName, String parentNodeXpath,
         String dataNodeUpdatesAsJson, OffsetDateTime observedTimestamp);
+
+    /**
+     * Starts a session which allows use of locks and batch interaction with the persistence service.
+     *
+     * @return Session ID string
+     */
+    String startSession();
+
+    /**
+     * Close session.
+     *
+     * @param sessionId session ID
+     *
+     */
+    void closeSession(String sessionId);
 }