chore: improve readability of type conversion logic

Author: Gezi-lzq

core/src/main/java/kafka/automq/table/binder/AbstractTypeAdapter.java

@@ -54,24 +54,40 @@ public Object convert(Object sourceValue, S sourceSchema, Type targetType) {
             return null;
         }
 
-        return switch (targetType.typeId()) {
-            case BOOLEAN -> convertBoolean(sourceValue, sourceSchema, targetType);
-            case INTEGER -> convertInteger(sourceValue, sourceSchema, targetType);
-            case LONG -> convertLong(sourceValue, sourceSchema, targetType);
-            case FLOAT -> convertFloat(sourceValue, sourceSchema, targetType);
-            case DOUBLE -> convertDouble(sourceValue, sourceSchema, targetType);
-            case STRING -> convertString(sourceValue, sourceSchema, targetType);
-            case BINARY -> convertBinary(sourceValue, sourceSchema, targetType);
-            case FIXED -> convertFixed(sourceValue, sourceSchema, targetType);
-            case UUID -> convertUUID(sourceValue, sourceSchema, targetType);
-            case DECIMAL -> convertDecimal(sourceValue, sourceSchema, (Types.DecimalType) targetType);
-            case DATE -> convertDate(sourceValue, sourceSchema, targetType);
-            case TIME -> convertTime(sourceValue, sourceSchema, targetType);
-            case TIMESTAMP -> convertTimestamp(sourceValue, sourceSchema, (Types.TimestampType) targetType);
-            case LIST -> convertList(sourceValue, sourceSchema, (Types.ListType) targetType);
-            case MAP -> convertMap(sourceValue, sourceSchema, (Types.MapType) targetType);
-            default -> sourceValue;
-        };
+        switch (targetType.typeId()) {
+            case BOOLEAN:
+                return convertBoolean(sourceValue, sourceSchema, targetType);
+            case INTEGER:
+                return convertInteger(sourceValue, sourceSchema, targetType);
+            case LONG:
+                return convertLong(sourceValue, sourceSchema, targetType);
+            case FLOAT:
+                return convertFloat(sourceValue, sourceSchema, targetType);
+            case DOUBLE:
+                return convertDouble(sourceValue, sourceSchema, targetType);
+            case STRING:
+                return convertString(sourceValue, sourceSchema, targetType);
+            case BINARY:
+                return convertBinary(sourceValue, sourceSchema, targetType);
+            case FIXED:
+                return convertFixed(sourceValue, sourceSchema, targetType);
+            case UUID:
+                return convertUUID(sourceValue, sourceSchema, targetType);
+            case DECIMAL:
+                return convertDecimal(sourceValue, sourceSchema, (Types.DecimalType) targetType);
+            case DATE:
+                return convertDate(sourceValue, sourceSchema, targetType);
+            case TIME:
+                return convertTime(sourceValue, sourceSchema, targetType);
+            case TIMESTAMP:
+                return convertTimestamp(sourceValue, sourceSchema, (Types.TimestampType) targetType);
+            case LIST:
+                return convertList(sourceValue, sourceSchema, (Types.ListType) targetType);
+            case MAP:
+                return convertMap(sourceValue, sourceSchema, (Types.MapType) targetType);
+            default:
+                return sourceValue;
+        }
     }
 
     protected Object convertBoolean(Object sourceValue, S ignoredSourceSchema, Type targetType) {