laserninja commented on code in PR #10494:
URL: https://github.com/apache/gravitino/pull/10494#discussion_r2979161921
##########
trino-connector/trino-connector/src/main/java/org/apache/gravitino/trino/connector/catalog/CatalogConnectorMetadata.java:
##########
@@ -396,4 +412,50 @@ public void setColumnType(SchemaTableName schemaTableName,
String columnName, Ty
String[] columnNames = {columnName};
applyAlter(schemaTableName, TableChange.updateColumnType(columnNames,
type));
}
+
+ /**
+ * Checks whether the catalog supports function operations.
+ *
+ * @return true if the catalog supports function operations, false otherwise
+ */
+ public boolean supportsFunctions() {
+ return functionCatalog != null;
+ }
+
+ /**
+ * Lists all functions with details in the specified schema.
+ *
+ * @param schemaName the name of the schema
+ * @return an array of functions, or an empty array if functions are not
supported
+ */
+ public Function[] listFunctionInfos(String schemaName) {
+ if (functionCatalog == null) {
Review Comment:
done
##########
trino-connector/trino-connector/src/main/java/org/apache/gravitino/trino/connector/catalog/CatalogConnectorMetadata.java:
##########
@@ -396,4 +412,50 @@ public void setColumnType(SchemaTableName schemaTableName,
String columnName, Ty
String[] columnNames = {columnName};
applyAlter(schemaTableName, TableChange.updateColumnType(columnNames,
type));
}
+
+ /**
+ * Checks whether the catalog supports function operations.
+ *
+ * @return true if the catalog supports function operations, false otherwise
+ */
+ public boolean supportsFunctions() {
+ return functionCatalog != null;
+ }
+
+ /**
+ * Lists all functions with details in the specified schema.
+ *
+ * @param schemaName the name of the schema
+ * @return an array of functions, or an empty array if functions are not
supported
+ */
+ public Function[] listFunctionInfos(String schemaName) {
+ if (functionCatalog == null) {
+ return new Function[0];
+ }
+ try {
+ return functionCatalog.listFunctionInfos(Namespace.of(schemaName));
+ } catch (NoSuchSchemaException e) {
+ throw new TrinoException(
+ GravitinoErrorCode.GRAVITINO_SCHEMA_NOT_EXISTS,
SCHEMA_DOES_NOT_EXIST_MSG, e);
+ }
+ }
+
+ /**
+ * Retrieves a function by its schema and function name.
+ *
+ * @param schemaName the name of the schema
+ * @param functionName the name of the function
+ * @return the function, or null if functions are not supported or the
function does not exist
+ */
+ @Nullable
+ public Function getFunction(String schemaName, String functionName) {
+ if (functionCatalog == null) {
+ return null;
+ }
+ try {
+ return functionCatalog.getFunction(NameIdentifier.of(schemaName,
functionName));
+ } catch (NoSuchFunctionException e) {
+ return null;
Review Comment:
will do
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