X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=cps-service%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fcps%2Fspi%2FCpsDataPersistenceService.java;h=fd660e67560cf6d27f27c41a085498b9785ae958;hb=a0b8fb72f9ab872ec554b812db10758592b5a294;hp=fd658861c23cfe41674ee2ca8c110e6afe207c39;hpb=e1537e7c389950dd8ad845e46a9e7b647f427eba;p=cps.git

diff --git a/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java b/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
index fd658861c..fd660e675 100644
--- a/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
+++ b/cps-service/src/main/java/org/onap/cps/spi/CpsDataPersistenceService.java
@@ -1,6 +1,6 @@
 /*
  * ============LICENSE_START=======================================================
- *  Copyright (C) 2020 Nordix Foundation.
+ *  Copyright (C) 2020-2022 Nordix Foundation.
  *  Modifications Copyright (C) 2021 Pantheon.tech
  *  Modifications Copyright (C) 2022 Bell Canada
  * ================================================================================
@@ -23,6 +23,7 @@
 package org.onap.cps.spi;
 
 import java.util.Collection;
+import java.util.List;
 import java.util.Map;
 import org.onap.cps.spi.model.DataNode;
 
@@ -145,7 +146,32 @@ public interface CpsDataPersistenceService {
      *                               included in the output
      * @return the data nodes found i.e. 0 or more data nodes
      */
-    Collection<DataNode> queryDataNodes(String dataspaceName, String anchorName,
-        String cpsPath, FetchDescendantsOption fetchDescendantsOption);
+    List<DataNode> queryDataNodes(String dataspaceName, String anchorName,
+                                  String cpsPath, FetchDescendantsOption fetchDescendantsOption);
+
+    /**
+     * 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);
+
+    /**
+     * Lock anchor.
+     * To release locks(s), the session holding the lock(s) must be closed.
+     *
+     * @param sessionID session ID
+     * @param dataspaceName dataspace name
+     * @param anchorName anchor name
+     * @param timeoutInMilliseconds lock attempt timeout in milliseconds
+     */
+    void lockAnchor(String sessionID, String dataspaceName, String anchorName, Long timeoutInMilliseconds);
 
 }