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fix replace expr charset mistaken code bug

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This commit is contained in:
SevenJ-swj
2023-07-11 10:42:33 +00:00
committed by ob-robot
parent c5c92dfe7c
commit fa010efcd4
5 changed files with 51 additions and 57 deletions
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61
src/sql/engine/expr/ob_expr_replace.cpp
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@ -131,9 +131,10 @@ int ObExprReplace::replace(ObString &ret_str,
ObExprStringBuf &string_buf)
{
int ret = OB_SUCCESS;
ObString dst_str;
bool is_null = false;
if (OB_UNLIKELY(text.length() <= 0)) {
// Return empty string
ret_str.reset();
} else if (OB_UNLIKELY(from.length() <= 0) || OB_UNLIKELY(to.length() < 0)) {
ret_str = text;
} else if (OB_ISNULL(from.ptr())) {
@ -142,51 +143,29 @@ int ObExprReplace::replace(ObString &ret_str,
} else if (OB_UNLIKELY(text.length() < from.length()) ||
OB_UNLIKELY(from == to)) {
ret_str = text;
} else if (OB_FAIL(ObSQLUtils::check_well_formed_str(text, cs_type, dst_str, is_null, false, false))
|| OB_FAIL(ObSQLUtils::check_well_formed_str(from, cs_type, dst_str, is_null, false, false))
|| OB_FAIL(ObSQLUtils::check_well_formed_str(to, cs_type, dst_str, is_null, false, false))) {
LOG_WARN("check well formed str failed", K(ret));
} else {
ObSEArray<uint32_t, 4> locations(common::ObModIds::OB_SQL_EXPR_REPLACE,
common::OB_MALLOC_NORMAL_BLOCK_SIZE);
const char *buf_start = text.ptr();
const char *buf_end = text.ptr() + text.length();
const ObCharsetInfo *cs = NULL;
int error = 0;
if (OB_UNLIKELY(OB_ISNULL(cs = ObCharset::get_charset(cs_type)) ||
OB_ISNULL(cs->cset))) {
ret = OB_ERR_UNEXPECTED;
LOG_ERROR("unexpected error. invalid argument(s)", K(cs_type));
}
int32_t char_len = 0;
int32_t next_char_len = 0;
while (OB_SUCC(ret) && OB_LIKELY(error == 0) && buf_start + char_len < buf_end) {
char_len += static_cast<int32_t>(cs->cset->well_formed_len(cs, buf_start + char_len, buf_end, 1, &error));
if (OB_UNLIKELY(0 != error)) {
bool is_null = false;
//mysql strict mode will return null, otherwise will return something
//so we should get session to acquire if is_strict mode here.
//we now set is_strict=false.
if (OB_FAIL(ObSQLUtils::check_well_formed_str(text, cs_type, ret_str, is_null, false, false))) {
LOG_WARN("check well formed str failed", K(ret));
}
} else if (next_char_len == 0 && FALSE_IT(next_char_len = char_len)) {
} else if (char_len < from.length()) {
//do nothing
} else if (char_len > from.length()) {
buf_start += next_char_len;
char_len = 0;
next_char_len = 0;
} else if (0 == MEMCMP(buf_start, from.ptr(), char_len)) {
ret = locations.push_back(buf_start - text.ptr());
buf_start += char_len;
char_len = 0;
next_char_len = 0;
ObString mb;
int32_t wc;
ObStringScanner scanner(text, cs_type, ObStringScanner::IGNORE_INVALID_CHARACTER);
while (OB_SUCC(ret) && scanner.get_remain_str().length() >= from.length()) {
if (0 == MEMCMP(scanner.get_remain_str().ptr(), from.ptr(), from.length())) {
ret = locations.push_back(scanner.get_remain_str().ptr() - text.ptr());
scanner.forward_bytes(from.length());
} else if (OB_FAIL(scanner.next_character(mb, wc))) {
LOG_WARN("get next character failed", K(ret));
} else {
buf_start += next_char_len;
char_len = 0;
next_char_len = 0;
//do nothing
}
}
int64_t tot_length = 0;
if (OB_UNLIKELY(error != 0)) {
} else if (OB_FAIL(ret)) {
if (OB_FAIL(ret)) {
ret_str.reset();
} else if (locations.count() == 0) {
ret_str = text;
@ -253,7 +232,7 @@ int ObExprReplace::eval_replace(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &exp
expr_datum.set_datum(*text);
} else if (!is_lob_res) { // non text tc inputs
if (OB_FAIL(replace(res,
expr.args_[0]->datum_meta_.cs_type_,
expr.datum_meta_.cs_type_,
text->get_string(),
!from->is_null() ? from->get_string() : ObString(),
(NULL != to && !to->is_null()) ? to->get_string() : ObString(),
@ -288,7 +267,7 @@ int ObExprReplace::eval_replace(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &exp
LOG_WARN("failed to get string data", K(ret), K(expr.args_[2]->datum_meta_));
}
if (OB_SUCC(ret)) {
if (OB_FAIL(replace(res, expr.args_[0]->datum_meta_.cs_type_, text_data, from_data, to_data, temp_allocator))) {
if (OB_FAIL(replace(res, expr.datum_meta_.cs_type_, text_data, from_data, to_data, temp_allocator))) {
LOG_WARN("do replace for lob resutl failed", K(ret), K(expr.datum_meta_.type_));
} else if (OB_FAIL(ObTextStringHelper::string_to_templob_result(expr, ctx, expr_datum, res))) {
LOG_WARN("set lob result failed", K(ret));