ShaiviAgarwal2 commented on issue #39463:
URL: https://github.com/apache/arrow/issues/39463#issuecomment-1882818798
To enhance the Cast kernel function, we should follow the mentioned steps:-
Firstly, we will identify the location of the Cast kernel function in the
code.
Then we will remove the Legacy `CastTo` function from the code.
Then we will modify the Cast kernel function to handle the conversion of
`LargeStringType`, `BinaryType`, and `LargeBinaryType` to Dictionary.
Finally, we will test the updated Cast kernel function
I have created it with a basic example of how this might look in C++
```
template <typename T>
Dictionary CastKernel(T input) {
if (type(input) == type(LargeStringType) || type(input) ==
type(BinaryType) || type(input) == type(LargeBinaryType)) {
// Convert to Dictionary type
Dictionary output = convertToDictionary(input);
return output;
} else {
// Leave as is
return input;
}
}
Dictionary convertToDictionary(T input) {
// rest of the code to convert it
}
```
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