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mariadb-columnstore-engine/utils/funcexp/func_json_unquote.cpp
Rucha Deodhar 53870ac06f json_depth
2025-06-03 15:56:47 +05:30

58 lines
1.7 KiB
C++

#include "functor_json.h"
#include "functioncolumn.h"
#include "json_lib.h"
#include "jsonhelpers.h"
using namespace execplan;
#include "rowgroup.h"
using namespace rowgroup;
#include "joblisttypes.h"
using namespace joblist;
#include "jsonhelpers.h"
using namespace funcexp::helpers;
namespace funcexp
{
CalpontSystemCatalog::ColType Func_json_unquote::operationType(FunctionParm& fp,
CalpontSystemCatalog::ColType& /*resultType*/)
{
return fp[0]->data()->resultType();
}
std::string Func_json_unquote::getStrVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
execplan::CalpontSystemCatalog::ColType& type)
{
const auto js = fp[0]->data()->getStrVal(row, isNull);
if (isNull)
return "";
json_engine_t jsEg;
int jsEg_stack[JSON_DEPTH_LIMIT];
int strLen;
const CHARSET_INFO* cs = type.getCharset();
mem_root_dynamic_array_init(NULL, PSI_INSTRUMENT_MEM | MY_INIT_BUFFER_USED | MY_BUFFER_NO_RESIZE,
&jsEg.stack, sizeof(int), &jsEg_stack,
JSON_DEPTH_LIMIT, 0, MYF(0));
initJSEngine(jsEg, cs, js);
json_read_value(&jsEg);
if (unlikely(jsEg.s.error) || jsEg.value_type != JSON_VALUE_STRING)
return js.safeString();
char* buf = (char*)alloca(jsEg.value_len + 1);
if ((strLen = json_unescape(cs, jsEg.value, jsEg.value + jsEg.value_len, &my_charset_utf8mb3_general_ci,
(uchar*)buf, (uchar*)(buf + jsEg.value_len))) >= 0)
{
buf[strLen] = '\0';
string ret = buf;
return strLen == 0 ? "" : ret;
}
return js.safeString("");
}
} // namespace funcexp