danny0405 commented on a change in pull request #10388: [FLINK-14912][Table]
create, drop catalog functions through catalog manager
URL: https://github.com/apache/flink/pull/10388#discussion_r353724113
##########
File path:
flink-table/flink-table-planner-blink/src/main/java/org/apache/flink/table/planner/operations/SqlToOperationConverter.java
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@@ -179,6 +195,72 @@ private Operation convertDropTable(SqlDropTable
sqlDropTable) {
return new DropTableOperation(identifier,
sqlDropTable.getIfExists());
}
+ /** Convert CREATE FUNCTION statement. */
+ private Operation convertCreateFunction(SqlCreateFunction
sqlCreateFunction) {
+ FunctionLanguage language =
parseLanguage(sqlCreateFunction.getFunctionLanguage());
+ CatalogFunction catalogFunction = new CatalogFunctionImpl(
+ sqlCreateFunction.getFunctionClassName().toValue(),
language);
+
+ UnresolvedIdentifier unresolvedIdentifier =
UnresolvedIdentifier.of(sqlCreateFunction.getFunctionIdentifier());
+ ObjectIdentifier identifier =
catalogManager.qualifyIdentifier(unresolvedIdentifier);
+
+ return new CreateFunctionOperation(
+ identifier,
+ catalogFunction,
+ sqlCreateFunction.isIfNotExists()
+ );
+ }
+
+ /** Convert ALTER FUNCTION statement. */
+ private Operation convertAlterFunction(SqlAlterFunction
sqlAlterFunction) {
+ FunctionLanguage language =
parseLanguage(sqlAlterFunction.getFunctionLanguage());
+ CatalogFunction catalogFunction = new CatalogFunctionImpl(
+ sqlAlterFunction.getFunctionClassName().toValue(),
language);
+
+ UnresolvedIdentifier unresolvedIdentifier =
UnresolvedIdentifier.of(sqlAlterFunction.getFunctionIdentifier());
+ ObjectIdentifier identifier =
catalogManager.qualifyIdentifier(unresolvedIdentifier);
+ return new AlterFunctionOperation(
+ identifier,
+ catalogFunction,
+ sqlAlterFunction.isIfExists()
+ );
+ }
+
+ /** Convert DROP FUNCTION statement. */
+ private Operation convertDropFunction(SqlDropFunction sqlDropFunction) {
+ UnresolvedIdentifier unresolvedIdentifier =
UnresolvedIdentifier.of(sqlDropFunction.getFunctionIdentifier());
+ ObjectIdentifier identifier =
catalogManager.qualifyIdentifier(unresolvedIdentifier);
+
+ return new DropFunctionOperation(
+ identifier,
+ sqlDropFunction.getIfExists());
+ }
+
+ /**
+ * Converts language string the FunctionLanguage.
+ * @param languageString the language string from SQL parser
+ * @return supported FunctionLanguage otherwise raise
UnsupportedOperationException.
+ */
+ private FunctionLanguage parseLanguage(String languageString) {
+ if (StringUtils.isNullOrWhitespaceOnly(languageString)) {
Review comment:
Move all the tool methods to the `//~ Tools` comment part.
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