[BugFix] Python inline UDF creation failing when file='inline' is omitted (#72359)

Author: s4ch1n

fe/fe-core/src/main/java/com/starrocks/sql/analyzer/CreateFunctionAnalyzer.java

@@ -781,14 +781,11 @@ private void analyzePython(CreateFunctionStmt stmt, ConnectContext context) {
         }
         String symbol = properties.get(CreateFunctionStmt.SYMBOL_KEY);
         String inputType = properties.getOrDefault(CreateFunctionStmt.INPUT_TYPE, "scalar");
-        String objectFile = stmt.getProperties().get(CreateFunctionStmt.FILE_KEY);
+        String objectFile = properties.getOrDefault(CreateFunctionStmt.FILE_KEY, "inline");
 
         if (isInline && !StringUtils.equalsIgnoreCase(objectFile, "inline")) {
             ErrorReport.reportSemanticException(ErrorCode.ERR_COMMON_ERROR, "inline function file should be 'inline'");
         }
-        if (isInline) {
-            objectFile = "inline";
-        }
 
         if (!inputType.equalsIgnoreCase("arrow") && !inputType.equalsIgnoreCase("scalar")) {
             ErrorReport.reportSemanticException(ErrorCode.ERR_COMMON_ERROR, "unknown input type:" + inputType);

fe/fe-core/src/test/java/com/starrocks/sql/analyzer/CreateFunctionStmtAnalyzerTest.java

@@ -97,6 +97,20 @@ private CreateFunctionStmt createPyStmt(String symbol, String type, String targe
                 createFunctionSql, 32).get(0);
     }
 
+    private CreateFunctionStmt createPyInlineStmtNoFile(String symbol) {
+        Config.enable_udf = true;
+        String createFunctionSql = String.format("CREATE FUNCTION ABC.MY_UDF_JSON_GET_NOFILE(string, string) \n"
+                + "RETURNS string \n"
+                + "type = 'Python'\n"
+                + "symbol = '%s'\n"
+                + "AS $$\n"
+                + "def a(b):\n"
+                + "   return b\n"
+                + "$$;", symbol);
+        return (CreateFunctionStmt) com.starrocks.sql.parser.SqlParser.parse(
+                createFunctionSql, 32).get(0);
+    }
+
     @Test
     public void testJUDF() {
         assertThrows(Throwable.class, () -> {
@@ -1116,6 +1130,14 @@ public void testJScalarUDFArrayOfStruct() {
         });
     }
 
+    @Test
+    public void testPyInlineUDFWithoutFileProperty() {
+        CreateFunctionStmt stmt = createPyInlineStmtNoFile("a");
+        Assertions.assertNotNull(stmt.getContent(), "Inline body must be parsed into content");
+        new CreateFunctionAnalyzer().analyze(stmt, connectContext);
+        Assertions.assertEquals("inline", stmt.getFunction().getLocation().toString(),
+                "Analyzer must auto-set location to 'inline' when file property is omitted");
+    }
     public static class DateEval {
         public java.time.LocalDateTime evaluate(java.time.LocalDate d, java.time.LocalDateTime ts) {
             return ts;