updated function

cpp/src/gandiva/array_ops.cc

@@ -239,29 +239,29 @@ double* array_float64_remove(int64_t context_ptr, const double* entry_buf,
  valid_row, out_len, valid_ptr);
 }
 
-bool array_int32_to_string(int64_t context_ptr, const int32_t* entry_buf,
+char* array_int32_to_string(int64_t context_ptr, const int32_t* entry_buf,
  int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
  int32_t contains_data, bool contains_data_valid, 
  const char* delimiter) {
  return array_to_string_template<int32_t>(entry_buf, entry_len, entry_validity, 
  combined_row_validity, delimiter);
 }
 
-bool array_int64_to_string(int64_t context_ptr, const int64_t* entry_buf,
+char* array_int64_to_string(int64_t context_ptr, const int64_t* entry_buf,
  int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
  const char* delimiter) {
  return array_to_string_template<int64_t>(entry_buf, entry_len, entry_validity, 
  combined_row_validity, delimiter);
 }
 
-bool array_float32_to_string(int64_t context_ptr, const float* entry_buf,
+char* array_float32_to_string(int64_t context_ptr, const float* entry_buf,
  int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
  const char* delimiter) {
  return array_to_string_template<float>(entry_buf, entry_len, entry_validity, 
  combined_row_validity, delimiter);
 }
 
-bool array_float64_to_string(int64_t context_ptr, const double* entry_buf,
+char* array_float64_to_string(int64_t context_ptr, const double* entry_buf,
  int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
  const char* delimiter) {
  return array_to_string_template<double>(entry_buf, entry_len, entry_validity, 
@@ -412,6 +412,55 @@ arrow::Status ExportedArrayFunctions::AddMappings(Engine* engine) const {
  engine->AddGlobalMappingForFunc("array_float64_remove",
  types->double_ptr_type(), args,
  reinterpret_cast<void*>(array_float64_remove));
+
+
+ //Array to string.
+ args = {types->i64_type(), // int64_t execution_context
+ types->i32_ptr_type(), // int8_t* input data ptr
+ types->i32_type(), // int32_t input length
+ types->i32_ptr_type(), // input validity buffer
+ types->i1_type(), // bool input row validity
+ types->i8_ptr_type() //value to for delimiter
+ };
+ engine->AddGlobalMappingForFunc("array_int32_to_string",
+ types->i32_ptr_type(), args,
+ reinterpret_cast<void*>(array_int32_to_string));
+
+ args = {types->i64_type(), // int64_t execution_context
+ types->i64_ptr_type(), // int8_t* input data ptr
+ types->i32_type(), // int32_t input length
+ types->i32_ptr_type(), // input validity buffer
+ types->i1_type(), // bool input row validity
+ types->i8_ptr_type() //value to for delimiter 
+ };
+
+ engine->AddGlobalMappingForFunc("array_int64_to_string",
+ types->i64_ptr_type(), args,
+ reinterpret_cast<void*>(array_int64_to_string));
+
+ args = {types->i64_type(), // int64_t execution_context
+ types->float_ptr_type(), // float* input data ptr
+ types->i32_type(), // int32_t input length
+ types->i32_ptr_type(), // input validity buffer
+ types->i1_type(), // bool input row validity
+ types->i8_ptr_type() //value to for delimiter
+ };
+
+ engine->AddGlobalMappingForFunc("array_float32_to_string",
+ types->float_ptr_type(), args,
+ reinterpret_cast<void*>(array_float32_to_string));
+
+ args = {types->i64_type(), // int64_t execution_context
+ types->double_ptr_type(), // int8_t* input data ptr
+ types->i32_type(), // int32_t input length
+ types->i32_ptr_type(), // input validity buffer
+ types->i1_type(), // bool input row validity
+ types->i8_ptr_type() //value to for delimiter 
+ };
+
+ engine->AddGlobalMappingForFunc("array_float64_to_string",
+ types->double_ptr_type(), args,
+ reinterpret_cast<void*>(array_float64_to_string)); 
  return arrow::Status::OK();
 }
 } // namespace gandiva

cpp/src/gandiva/array_ops.h

@@ -82,5 +82,21 @@ double* array_float64_remove(int64_t context_ptr, const double* entry_buf,
  double remove_data, bool entry_validWhat, 
  int64_t loop_var, int64_t validity_index_var,
  bool* valid_row, int32_t* out_len, int32_t** valid_ptr);
-
+GANDIVA_EXPORT
+char* array_int32_to_string(int64_t context_ptr, const int32_t* entry_buf,
+ int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
+ int32_t contains_data, bool contains_data_valid, 
+ const char* delimiter);
+GANDIVA_EXPORT
+char* array_int64_to_string(int64_t context_ptr, const int64_t* entry_buf,
+ int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
+ const char* delimiter);
+GANDIVA_EXPORT
+char* array_float32_to_string(int64_t context_ptr, const float* entry_buf,
+ int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
+ const char* delimiter);
+GANDIVA_EXPORT
+char* array_float64_to_string(int64_t context_ptr, const double* entry_buf,
+ int32_t entry_len, const int32_t* entry_validity, bool combined_row_validity,
+ const char* delimiter);
 }