twalthr commented on a change in pull request #8661: [FLINK-12711][table]
Separate function implementation and definition
URL: https://github.com/apache/flink/pull/8661#discussion_r294339911
##########
File path:
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/catalog/FunctionLookup.java
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@@ -16,19 +16,44 @@
* limitations under the License.
*/
-package org.apache.flink.table.expressions.catalog;
+package org.apache.flink.table.catalog;
import org.apache.flink.annotation.Internal;
import org.apache.flink.table.functions.FunctionDefinition;
+import java.util.Optional;
+
/**
- * Catalog of functions that can resolve the name of a function to a {@link
FunctionDefinition}.
+ * Catalog of functions that can resolve the name of a function to a {@link
FunctionLookup.Result}.
*/
@Internal
-public interface FunctionDefinitionCatalog {
+public interface FunctionLookup {
Review comment:
Yes, but we also return the object identifier. So it is more than just the
definition. The catalog is also called `FunctionCatalog` and not
`FunctionDefinitionCatalog`.
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