roll back type inheritance for the fixedWidth intrinsic

the arguments and results don't necessarily match when the whole file may be missing columns the transform is intended to repair

Author: cwensel

tessellate-main/src/main/antora/modules/reference/pages/transforms.adoc

@@ -106,7 +106,7 @@ Placeholders:::::
 `counterToZero`:::: Resets the counter portion when the millisecond changes, defaults to `false`.
 
 `fixedWidth`:: Pads a row/tuple to a fixed width by inserting nulls at a given index.
-If any, type information is inherited from the current fields.
+Ensure type information is declared for result fields if required.
 Def:::
 - `^fixedWidth{width:...,insertAt:...} ->` - replace ALL fields with the fixed with result
 - `^fixedWidth{width:...,insertAt:...} -> new_field|type + new_field2|type + etc` - name the new fields

tessellate-main/src/main/java/io/clusterless/tessellate/pipeline/intrinsic/FixedWidthIntrinsic.java

@@ -49,11 +49,6 @@ public Result create(Fields currentFields, Operation operation) {
             throw new IllegalArgumentException("result fields width must match fixed width");
         }
 
-        // currentFields is equivalent to Field.ALL so we can safely copy over the type information
-        if (!toFields.hasTypes() && currentFields.hasTypes()) {
-            toFields = toFields.applyTypes(currentFields.getTypes());
-        }
-
         FixedWidthFunction function = new FixedWidthFunction(toFields, width, insertAt);
 
         return new Result(Fields.ALL, function, toFields);

tessellate-main/src/test/java/io/clusterless/tessellate/pipeline/PipelineTest.java

@@ -108,7 +108,7 @@ void badWidthWithFields(@PathForResource("/data/delimited-variable-width.csv") U
     @Test
     void badWidthWithFieldsAndTypes(@PathForResource("/data/delimited-variable-width.csv") URI input, @PathForOutput URI output) throws IOException {
         Transform transform = new Transform(
-                "^fixedWidth{ width:5, insertAt:3 } -> _0+_1+_2+_3+_4"
+                "^fixedWidth{ width:5, insertAt:3 } -> _0|string+_1|string+_2|string+_3|string+_4|string"
         );
 
         fixedWidthBase(input, output, transform, Field.asField("a|string", "b|string", "c|string", "d|string", "e|string"));