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38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/***********************************************************************/
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/* (C) Copyright to the author Olivier BERTRAND 2015 */
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/***********************************************************************/
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#include <my_global.h>
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#include <mysqld.h>
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#include <string.h>
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#if defined(_WIN32)
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#define DllExport __declspec( dllexport )
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#else // !_WIN32
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#define DllExport
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#endif // !_WIN32
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extern "C" {
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DllExport my_bool noconst_init(UDF_INIT*, UDF_ARGS*, char*);
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DllExport char *noconst(UDF_INIT*, UDF_ARGS*, char*, unsigned long*, char*, char*);
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} // extern "C"
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/***********************************************************************/
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/* Returns its argument saying it is not a constant. */
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/***********************************************************************/
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my_bool noconst_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
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{
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if (args->arg_count != 1 || args->arg_type[0] != STRING_RESULT) {
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strcpy(message, "noconst unique argument must be a string");
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return true;
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} // endif arg
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initid->const_item = false; // The trick!
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return false;
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} // end of noconst_init
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char *noconst(UDF_INIT *initid, UDF_ARGS *args, char *result,
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unsigned long *res_length, char *, char *)
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{
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return args->args[0];
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} // end of noconst
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