hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

patch 4.0

Browse Source
This commit is contained in:
wangzelin.wzl
2022-10-24 10:34:53 +08:00
parent 4ad6e00ec3
commit 93a1074b0c
10533 changed files with 2588271 additions and 2299373 deletions
Download Patch File Download Diff File Expand all files Collapse all files

347
src/sql/engine/expr/ob_expr_regexp_substr.cpp
View File

@ -22,27 +22,30 @@
using namespace oceanbase::common;
namespace oceanbase {
namespace sql {
// Modify the previously defined T_OP_REGEXP_SUBSTR to T_FUN_SYS_REGEXP_SUBSTR, because the previous
// registered value of T_OP_REGEXP_SUBSTR is only in mysql
ObExprRegexpSubstr::ObExprRegexpSubstr(ObIAllocator& alloc)
: ObStringExprOperator(alloc, T_FUN_SYS_REGEXP_SUBSTR, N_REGEXP_SUBSTR, MORE_THAN_ONE)
{}
namespace oceanbase
{
namespace sql
{
//修改了之前定义的T_OP_REGEXP_SUBSTR为T_FUN_SYS_REGEXP_SUBSTR，因为之前T_OP_REGEXP_SUBSTR的注册值仅在mysql当中
ObExprRegexpSubstr::ObExprRegexpSubstr(ObIAllocator &alloc)
: ObStringExprOperator(alloc, T_FUN_SYS_REGEXP_SUBSTR, N_REGEXP_SUBSTR, MORE_THAN_ONE)
{
}
ObExprRegexpSubstr::~ObExprRegexpSubstr()
{}
{
}
int ObExprRegexpSubstr::calc_result_typeN(
ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const
int ObExprRegexpSubstr::calc_result_typeN(ObExprResType &type,
ObExprResType *types,
int64_t param_num,
common::ObExprTypeCtx &type_ctx) const
{
UNUSED(type_ctx);
int ret = OB_SUCCESS;
CK(NULL != type_ctx.get_raw_expr());
if (OB_FAIL(ret)) {
// Because the introduced regular expression library engine has utf8 restrictions, it is necessary
// to reset the relevant parameter types and implicitly convert
} else if (OB_UNLIKELY(param_num < 2 || param_num > 6)) {
} else if (OB_UNLIKELY(param_num < 2 || param_num > 6)) {//由于引入的正则表达式库引擎有utf8限制，因此需要重设相关参数类型，隐式转换一下
ret = OB_ERR_PARAM_SIZE;
LOG_WARN("param number of regexp_substr at least 2 and at most 6", K(ret), K(param_num));
} else {
@ -55,23 +58,23 @@ int ObExprRegexpSubstr::calc_result_typeN(
if (lib::is_oracle_mode()) {
// set max length.
type.set_length(static_cast<common::ObLength>(types[0].get_length()));
bool prefer_varchar = true;
auto str_params = make_const_carray(&types[0]);
OZ(aggregate_string_type_and_charset_oracle(*type_ctx.get_session(), str_params, type, prefer_varchar));
OZ(aggregate_string_type_and_charset_oracle(*type_ctx.get_session(),
str_params,
type,
PREFER_VAR_LEN_CHAR));
OZ(deduce_string_param_calc_type_and_charset(*type_ctx.get_session(), type, str_params));
OX(type.set_length_semantics(type_ctx.get_session()->get_actual_nls_length_semantics()));
} else {
const common::ObLengthSemantics default_length_semantics =
(OB_NOT_NULL(type_ctx.get_session()) ? type_ctx.get_session()->get_actual_nls_length_semantics()
: common::LS_BYTE);
const common::ObLengthSemantics default_length_semantics = (OB_NOT_NULL(type_ctx.get_session())
? type_ctx.get_session()->get_actual_nls_length_semantics()
: common::LS_BYTE);
type.set_varchar();
type.set_length(types[0].get_length());
type.set_length_semantics(
types[0].is_varchar_or_char() ? types[0].get_length_semantics() : default_length_semantics);
type.set_length_semantics(types[0].is_varchar_or_char() ? types[0].get_length_semantics() : default_length_semantics);
ret = aggregate_charsets_for_string_result(type, types, 1, type_ctx.get_coll_type());
}
if (OB_SUCC(ret)) { // because of regexp engine need utf8 code, here need reset calc collation type and can
// implicit cast.
if (OB_SUCC(ret)) {//because of regexp engine need utf8 code, here need reset calc collation type and can implicit cast.
switch (param_num) {
case 6:
if (lib::is_oracle_mode()) {
@ -122,161 +125,47 @@ int ObExprRegexpSubstr::calc_result_typeN(
return ret;
}
int ObExprRegexpSubstr::calc_resultN(
common::ObObj& result, const common::ObObj* objs, int64_t param_num, common::ObExprCtx& expr_ctx) const
int ObExprRegexpSubstr::calc(ObString &result,
bool &is_null,
const ObString &text,
const ObString &pattern,
int64_t position,
int64_t occurrence,
const ObCollationType cs_type,
const ObString &match_param,
int64_t subexpr,
bool has_null_argument,
bool reusable,
ObExprRegexContext* regexp_ptr,
ObExprStringBuf &string_buf,
ObIAllocator &exec_ctx_alloc)
{
int ret = OB_SUCCESS;
bool has_null = false;
ObString text, pattern, match_param;
int64_t position = 1, occurrence = 1, subexpr = 0;
bool is_flag_null = false;
if (OB_ISNULL(expr_ctx.calc_buf_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("varchar buffer not init or exec ctx or physical plan ctx is NULL", K(expr_ctx.calc_buf_));
} else {
for (int i = 0; !has_null && i < param_num; i++) {
// match param is null, use default flags
if (objs[i].is_null()) {
if (share::is_oracle_mode() && i == 4) { // compatible oracle
} else {
has_null = true;
is_flag_null = (i == 4);
}
}
}
for (int i = 0; OB_SUCC(ret) && i < param_num; i++) {
if (!objs[i].is_null() && !is_type_valid(objs[i].get_type())) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid argument", K(ret), K(i), K(objs[i]));
}
}
if (OB_SUCC(ret)) {
switch (param_num) {
case 6:
if (!objs[5].is_null()) {
if (OB_FAIL(ObExprUtil::get_trunc_int64(objs[5], expr_ctx, subexpr))) {
LOG_WARN("fail get position", K(subexpr), K(ret));
break;
} else if (OB_UNLIKELY(subexpr < 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("regexp_instr subexpr is invalid", K(ret), K(subexpr));
break;
}
}
case 5:
if (!objs[4].is_null()) {
TYPE_CHECK(objs[4], ObVarcharType);
match_param = objs[4].get_string();
}
case 4:
if (!objs[3].is_null()) {
if (OB_FAIL(ObExprUtil::get_trunc_int64(objs[3], expr_ctx, occurrence))) {
LOG_WARN("fail get position", K(occurrence), K(ret));
break;
} else if (OB_UNLIKELY(occurrence <= 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("regexp_instr occurrence is invalid", K(ret), K(occurrence));
break;
}
}
case 3:
if (!objs[2].is_null()) {
if (OB_FAIL(ObExprUtil::get_trunc_int64(objs[2], expr_ctx, position))) {
LOG_WARN("fail get position", K(position), K(ret));
break;
} else if (OB_UNLIKELY(position < 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("regexp_instr position is invalid", K(ret), K(position));
break;
}
}
case 2:
if (!objs[1].is_null()) {
TYPE_CHECK(objs[1], ObVarcharType);
pattern = objs[1].get_string();
if (share::is_mysql_mode() && pattern.empty() && !is_flag_null) { // compatible mysql
ret = OB_ERR_REGEXP_ERROR;
LOG_WARN("empty regex expression", K(ret));
}
}
if (OB_FAIL(ret)) {
} else if (!objs[0].is_null() && !objs[0].is_clob()) {
TYPE_CHECK(objs[0], ObVarcharType);
text = objs[0].get_string();
} else if (objs[0].is_clob()) {
text = objs[0].get_string();
}
default:
break;
}
ObExprRegexContext regexp_obj;
if (OB_SUCC(ret)) {
bool is_null = false;
ObString res;
if (OB_FAIL(calc(res,
is_null,
text,
pattern,
position,
occurrence,
result_type_.get_collation_type(),
match_param,
subexpr,
has_null,
&regexp_obj,
*expr_ctx.calc_buf_))) {
LOG_WARN(
"fail to cacl regexp_substr", K(ret), K(text), K(pattern), K(occurrence), K(match_param), K(subexpr));
} else if (is_null) {
result.set_null();
} else if (objs[0].is_clob()) {
result.set_lob_value(ObLongTextType, res.ptr(), res.length());
} else {
result.set_string(ObVarcharType, res);
}
}
}
}
if (OB_LIKELY(OB_SUCCESS == ret && !result.is_null())) {
result.set_collation_type(ObCharset::get_default_collation_oracle(CHARSET_UTF8MB4));
if (OB_FAIL(convert_result_collation(result_type_, result, expr_ctx.calc_buf_))) {
LOG_WARN("failed to convert result collation", K(ret));
} else {
result.set_collation(result_type_);
}
}
return ret;
}
int ObExprRegexpSubstr::calc(ObString& result, bool& is_null, const ObString& text, const ObString& pattern,
int64_t position, int64_t occurrence, const ObCollationType cs_type, const ObString& match_param, int64_t subexpr,
bool has_null_argument, ObExprRegexContext* regexp_ptr, ObExprStringBuf& string_buf)
{
int ret = OB_SUCCESS;
// begin with '^'
//begin with '^'
bool from_begin = false;
// end with '$'
//end with '$'
bool from_end = false;
ObExprRegexContext* regexp_substr_ctx = regexp_ptr;
ObSEArray<uint32_t, 4> begin_locations(common::ObModIds::OB_SQL_EXPR_REPLACE, common::OB_MALLOC_NORMAL_BLOCK_SIZE);
ObExprRegexContext *regexp_substr_ctx = regexp_ptr;
ObSEArray<uint32_t, 4> begin_locations(common::ObModIds::OB_SQL_EXPR_REPLACE,
common::OB_MALLOC_NORMAL_BLOCK_SIZE);
int flags = 0, multi_flag = 0;
const bool reusable = false;
ObString sub;
if (OB_ISNULL(regexp_substr_ctx)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("regexp ptr is null", K(ret));
} else if (!regexp_substr_ctx->is_inited()) {
if (OB_FAIL(ObExprRegexpCount::get_regexp_flags(cs_type, match_param, flags, multi_flag))) {
LOG_WARN("fail to get regexp flags", K(ret), K(match_param));
} else if (OB_FAIL(regexp_substr_ctx->init(pattern, flags, string_buf, reusable))) {
LOG_WARN("fail to init regexp", K(pattern), K(flags));
}
} else if (OB_FAIL(ObExprRegexpCount::get_regexp_flags(cs_type, match_param,
flags, multi_flag))) {
LOG_WARN("fail to get regexp flags", K(ret), K(match_param));
} else if (OB_FAIL(regexp_substr_ctx->init(pattern, flags,
reusable ? exec_ctx_alloc : string_buf,
reusable))) {
LOG_WARN("fail to init regexp", K(pattern), K(flags));
}
if (OB_SUCC(ret)) {
if (has_null_argument) {
is_null = true;
} else if (position <= 0 || occurrence <= 0) {
if (share::is_oracle_mode()) {
if (lib::is_oracle_mode()) {
ret = OB_ERR_ARGUMENT_OUT_OF_RANGE;
} else {
ret = OB_INVALID_ARGUMENT;
@ -299,14 +188,16 @@ int ObExprRegexpSubstr::calc(ObString& result, bool& is_null, const ObString& te
} else {
ObSEArray<size_t, 4> byte_num;
ObSEArray<size_t, 4> byte_offsets;
if (OB_FAIL(ObExprUtil::get_mb_str_info(
text, ObCharset::get_default_collation_oracle(CHARSET_UTF8MB4), byte_num, byte_offsets))) {
if (OB_FAIL(ObExprUtil::get_mb_str_info(text,
ObCharset::get_default_collation_oracle(CHARSET_UTF8MB4),
byte_num,
byte_offsets))) {
LOG_WARN("failed to get mb str info", K(ret));
} else if (multi_flag) {
if (from_begin && 1 != position) {
begin_locations.pop_back();
}
const char* text_ptr = text.ptr();
const char *text_ptr = text.ptr();
for (int64_t idx = position; OB_SUCC(ret) && idx < byte_offsets.count() - 1; ++idx) {
if (OB_UNLIKELY(byte_offsets.at(idx) >= text.length())) {
ret = OB_ERR_UNEXPECTED;
@ -319,10 +210,10 @@ int ObExprRegexpSubstr::calc(ObString& result, bool& is_null, const ObString& te
}
}
if (OB_SUCC(ret)) {
if (OB_FAIL(regexp_substr_ctx->substr(
text, occurrence, subexpr, sub, string_buf, from_begin, from_end, begin_locations))) {
LOG_WARN(
"fail to get substr", K(ret), K(text), K(pattern), K(occurrence), K(match_param), K(flags), K(subexpr));
if (OB_FAIL(regexp_substr_ctx->substr(text, occurrence, subexpr, sub, string_buf,
from_begin, from_end, begin_locations))) {
LOG_WARN("fail to get substr", K(ret), K(text), K(pattern),
K(occurrence), K(match_param), K(flags), K(subexpr));
} else if (lib::is_mysql_mode() && OB_ISNULL(sub.ptr())) {
is_null = true;
} else if (lib::is_oracle_mode() && OB_ISNULL(sub.ptr()) && OB_NOT_NULL(text.ptr())) {
@ -337,82 +228,117 @@ int ObExprRegexpSubstr::calc(ObString& result, bool& is_null, const ObString& te
return ret;
}
int ObExprRegexpSubstr::cg_expr(ObExprCGCtx&, const ObRawExpr&, ObExpr& rt_expr) const
int ObExprRegexpSubstr::cg_expr(ObExprCGCtx &op_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const
{
int ret = OB_SUCCESS;
UNUSED(op_cg_ctx);
CK(2 <= rt_expr.arg_cnt_ && rt_expr.arg_cnt_ <= 6);
rt_expr.eval_func_ = &eval_regexp_substr;
CK(raw_expr.get_param_count() >= 2);
if (OB_SUCC(ret)) {
const ObRawExpr *text = raw_expr.get_param_expr(0);
const ObRawExpr *pattern = raw_expr.get_param_expr(1);
if (OB_ISNULL(text) || OB_ISNULL(pattern)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(text), K(pattern), K(ret));
} else {
const bool const_text = text->is_const_expr();
const bool const_pattern = pattern->is_const_expr();
rt_expr.extra_ = (!const_text && const_pattern) ? 1 : 0;
rt_expr.eval_func_ = &eval_regexp_substr;
LOG_DEBUG("regexp expr cg", K(const_text), K(const_pattern), K(rt_expr.extra_));
}
}
return ret;
}
int ObExprRegexpSubstr::eval_regexp_substr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
int ObExprRegexpSubstr::eval_regexp_substr(
const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
{
int ret = OB_SUCCESS;
ObDatum* text = NULL;
ObDatum* pattern = NULL;
ObDatum* position = NULL;
ObDatum* occurrence = NULL;
ObDatum* flags = NULL;
ObDatum* subexpr = NULL;
ObDatum *text = NULL;
ObDatum *pattern = NULL;
ObDatum *position = NULL;
ObDatum *occurrence = NULL;
ObDatum *flags = NULL;
ObDatum *subexpr= NULL;
int64_t pos = 1;
int64_t occur = 1;
int64_t subexpr_val = 0;
if (OB_FAIL(expr.eval_param_value(ctx, text, pattern, position, occurrence, flags, subexpr))) {
LOG_WARN("evaluate parameters failed", K(ret));
} else if (OB_FAIL(ObExprUtil::get_int_param_val(position, pos)) ||
OB_FAIL(ObExprUtil::get_int_param_val(occurrence, occur)) ||
OB_FAIL(ObExprUtil::get_int_param_val(subexpr, subexpr_val))) {
} else if (OB_FAIL(ObExprUtil::get_int_param_val(position, pos))
|| OB_FAIL(ObExprUtil::get_int_param_val(occurrence, occur))
|| OB_FAIL(ObExprUtil::get_int_param_val(subexpr, subexpr_val))) {
LOG_WARN("get integer parameter value failed", K(ret));
} else if (pos < 0 || occur <= 0 || subexpr_val < 0) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("regexp_substr position or occurrence or subexpr is invalid", K(ret), K(pos), K(occur), K(subexpr_val));
LOG_WARN("regexp_substr position or occurrence or subexpr is invalid",
K(ret), K(pos), K(occur), K(subexpr_val));
} else {
// %flags may be null
bool is_flag_null = (NULL != flags && flags->is_null());
const bool null_result = (text->is_null() || pattern->is_null() || (NULL != position && position->is_null()) ||
(NULL != occurrence && occurrence->is_null()) ||
(NULL != subexpr && subexpr->is_null()) || (share::is_mysql_mode() && is_flag_null));
ObString match_param = (NULL != flags && !flags->is_null()) ? flags->get_string() : ObString();
const bool null_result = (text->is_null()
|| pattern->is_null()
|| (NULL != position && position->is_null())
|| (NULL != occurrence && occurrence->is_null())
|| (NULL != subexpr && subexpr->is_null())
|| (lib::is_mysql_mode() && is_flag_null));
ObString match_param = (NULL != flags && !flags->is_null())
? flags->get_string()
: ObString();
ObString res;
ObExprRegexContext regexp_ctx;
ObIAllocator& alloc = ctx.get_reset_tmp_alloc();
ObEvalCtx::TempAllocGuard alloc_guard(ctx);
ObIAllocator &alloc = alloc_guard.get_allocator();
bool is_null = false;
ObExprRegexContext local_regex_ctx;
ObExprRegexContext *regexp_ctx = &local_regex_ctx;
const bool reusable = (0 != expr.extra_) && ObExpr::INVALID_EXP_CTX_ID != expr.expr_ctx_id_;
if (OB_SUCC(ret) && reusable) {
if (NULL == (regexp_ctx = static_cast<ObExprRegexContext *>(
ctx.exec_ctx_.get_expr_op_ctx(expr.expr_ctx_id_)))) {
if (OB_FAIL(ctx.exec_ctx_.create_expr_op_ctx(expr.expr_ctx_id_, regexp_ctx))) {
LOG_WARN("create expr regex context failed", K(ret), K(expr));
} else if (OB_ISNULL(regexp_ctx)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("NULL context returned", K(ret));
}
}
}
if (OB_FAIL(ret)) {
} else if (share::is_mysql_mode() && !pattern->is_null() && pattern->get_string().empty() &&
!is_flag_null) { // compatible mysql
} else if (lib::is_mysql_mode() && !pattern->is_null() &&
pattern->get_string().empty() && !is_flag_null) {//compatible mysql
ret = OB_ERR_REGEXP_ERROR;
LOG_WARN("empty regex expression", K(ret));
} else if (OB_FAIL(calc(res,
is_null,
text->get_string(),
pattern->get_string(),
pos,
occur,
expr.datum_meta_.cs_type_,
match_param,
subexpr_val,
null_result,
&regexp_ctx,
alloc))) {
} else if (OB_FAIL(calc(res, is_null, text->get_string(), pattern->get_string(), pos, occur,
expr.datum_meta_.cs_type_, match_param, subexpr_val,
null_result, reusable, regexp_ctx, alloc,
ctx.exec_ctx_.get_allocator()))) {
LOG_WARN("calc failed", K(ret));
} else if (null_result) {
expr_datum.set_null();
} else {
if (is_null || (res.empty() && lib::is_oracle_mode() && !(expr.args_[0]->datum_meta_.is_clob()))) {
if (is_null || (res.empty()
&& lib::is_oracle_mode()
&& !(expr.args_[0]->datum_meta_.is_clob()))) {
expr_datum.set_null();
} else if (res.empty() && lib::is_oracle_mode() && expr.args_[0]->datum_meta_.is_clob()) {
} else if (res.empty()
&& lib::is_oracle_mode()
&& expr.args_[0]->datum_meta_.is_clob()) {
expr_datum.set_string(ObString().ptr(), ObString().length());
} else {
ObExprStrResAlloc out_alloc(expr, ctx);
ObString out;
if (OB_FAIL(ObExprUtil::convert_string_collation(
res, expr.args_[0]->datum_meta_.cs_type_, out, expr.datum_meta_.cs_type_, out_alloc))) {
if (OB_FAIL(ObExprUtil::convert_string_collation(res,
expr.args_[0]->datum_meta_.cs_type_,
out,
expr.datum_meta_.cs_type_,
out_alloc))) {
LOG_WARN("convert charset failed", K(ret));
} else {
if (out.ptr() == res.ptr()) {
// res is allocated in temporary allocator, deep copy here.
char* mem = expr.get_str_res_mem(ctx, res.length());
char *mem = expr.get_str_res_mem(ctx, res.length());
if (OB_ISNULL(mem)) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("allocate memory failed", K(ret));
@ -427,9 +353,8 @@ int ObExprRegexpSubstr::eval_regexp_substr(const ObExpr& expr, ObEvalCtx& ctx, O
}
}
}
return ret;
}
} // namespace sql
} // namespace oceanbase
}
}