luoyuxia commented on code in PR #22928:
URL: https://github.com/apache/flink/pull/22928#discussion_r1250315785
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/catalog/CatalogTable.java:
##########
@@ -120,4 +139,9 @@ default TableKind getTableKind() {
default Map<String, String> toProperties() {
return Collections.emptyMap();
}
+
+ /** Return the snapshot specified for the table. Return Optional.empty()
if not specified. */
+ default Optional<TableSnapshot> getSnapshot() {
Review Comment:
Please keep it same as the proposed FLIP.
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/catalog/Catalog.java:
##########
@@ -244,6 +244,23 @@ void alterDatabase(String name, CatalogDatabase
newDatabase, boolean ignoreIfNot
*/
CatalogBaseTable getTable(ObjectPath tablePath) throws
TableNotExistException, CatalogException;
+ /**
+ * Returns a {@link CatalogTable} or {@link CatalogView} identified by the
given {@link
Review Comment:
suggestion:
```
Returns a {@link CatalogTable} or {@link CatalogView} at a specific time
identified by the given {@link ObjectPath}.
```
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/catalog/Catalog.java:
##########
@@ -244,6 +244,24 @@ void alterDatabase(String name, CatalogDatabase
newDatabase, boolean ignoreIfNot
*/
CatalogBaseTable getTable(ObjectPath tablePath) throws
TableNotExistException, CatalogException;
+ /**
+ * Returns a {@link CatalogTable} or {@link CatalogView} identified by the
given {@link
+ * ObjectPath} and Timestamp. The framework will resolve the metadata
objects when necessary.
+ *
+ * @param tablePath Path of the table or view
+ * @param timestamp Timestamp of the table snapshot, which is milliseconds
since 1970-01-01
+ * 00:00:00 UTC
+ * @return The requested table or view
+ * @throws TableNotExistException if the target does not exist
+ * @throws CatalogException in case of any runtime exception
+ */
+ default CatalogBaseTable getTable(ObjectPath tablePath, long timestamp)
+ throws TableNotExistException, CatalogException {
+ throw new UnsupportedOperationException(
+ String.format(
+ "getTable with snapshot is not implemented for %s.",
this.getClass()));
Review Comment:
`getTable with snapshot` => `getTable(ObjectPath, long)` ?
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