rishabhdaim commented on code in PR #920:
URL: https://github.com/apache/jackrabbit-oak/pull/920#discussion_r1194717140
##########
oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/mongo/MongoDocumentStore.java:
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@@ -1147,6 +1155,85 @@ private <T extends Document> T
findAndModify(Collection<T> collection,
}
}
+ /**
+ * Performs a conditional update (e.g. using
+ * {@link Condition.Type#EXISTS} and only update the
+ * document if the condition is <code>true</code>. The returned documents
are
+ * immutable.
+ * <p>
+ * In case of a {@code DocumentStoreException} (e.g. when a communication
+ * error occurs) only some updates may have been applied. In this case
+ * it is the responsibility of the caller to check which {@link UpdateOp}s
+ * were applied and take appropriate action. The implementation however
ensures
+ * that the result of the operations are properly reflected in the document
+ * cache. That is, an implementation could simply evict the documents
related
+ * to the given update operations from the cache.
+ *
+ * @param collection the collection
+ * @param updateOps the update operation List
+ * @return the list containing old documents or <code>null</code> if the
condition is not met
+ * or if the document wasn't found. The order in the result list reflects
the order
+ * in the updateOps parameter
+ * @throws DocumentStoreException if the operation failed. E.g. because of
+ * an I/O error.
+ * @see #createOrUpdate(Collection, List)
+ */
+ @Override
Review Comment:
Yes, it can be removed.
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