/*
* ============LICENSE_START=======================================================
* Copyright (C) 2020 Nordix Foundation
+ * Modifications Copyright (C) 2021 Pantheon.tech
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
package org.onap.cps.api;
import org.checkerframework.checker.nullness.qual.NonNull;
+import org.onap.cps.spi.FetchDescendantsOption;
import org.onap.cps.spi.exceptions.DataValidationException;
+import org.onap.cps.spi.model.DataNode;
/*
* Datastore interface for handling CPS data.
*/
public interface CpsDataService {
+
/**
* Persists data for the given anchor and dataspace.
*
* @throws DataValidationException when json data is invalid
*/
void saveData(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String jsonData);
+
+ /**
+ * Retrieves datanode by XPath for given dataspace and anchor.
+ *
+ * @param dataspaceName dataspace name
+ * @param anchorName anchor name
+ * @param xpath xpath
+ * @param fetchDescendantsOption defines the scope of data to fetch: either single node or all the descendant nodes
+ * (recursively) as well
+ * @return data node object
+ */
+ DataNode getDataNode(@NonNull String dataspaceName, @NonNull String anchorName, @NonNull String xpath,
+ @NonNull FetchDescendantsOption fetchDescendantsOption);
+
}