Crate common_macro

Modules

• admin_fn 🔒
• aggr_func 🔒
• print_caller 🔒
• range_fn 🔒
• stack_trace_debug 🔒
  implement ::common_error::ext::StackError
• utils 🔒

Attribute Macros

• admin_fn
  Attribute macro to convert a normal function to SQL administration function. The annotated function should accept:
• as_aggr_func_creator
  A struct can be used as a creator for aggregate function if it has been annotated with this attribute first. This attribute add a necessary field which is intended to store the input data’s types to the struct. This attribute is expected to be used along with derive macro AggrFuncTypeStore.
• print_caller
  Attribute macro to print the caller to the annotated function. The caller is printed as its filename and the call site line number.
• range_fn
  Attribute macro to convert an arithimetic function to a range function. The annotated function should accept servaral arrays as input and return a single value as output. This procedure macro can works on any number of input parameters. Return type can be either primitive type or wrapped in Option.
• stack_trace_debug
  Attribute macro to derive std::fmt::Debug for the annotated Error type.

Derive Macros

• AggrFuncTypeStore
  Make struct implemented trait AggrFuncTypeStore, which is necessary when writing UDAF. This derive macro is expect to be used along with attribute macro as_aggr_func_creator.