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patch 4.0

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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
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137
src/sql/engine/expr/ob_expr_repeat.cpp
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@ -22,18 +22,27 @@
using namespace oceanbase::common;
using namespace oceanbase::sql;
namespace oceanbase {
namespace sql {}
} // namespace oceanbase
namespace oceanbase
{
namespace sql
{
}
}
ObExprRepeat::ObExprRepeat(ObIAllocator& alloc) : ObStringExprOperator(alloc, T_FUN_SYS_REPEAT, N_REPEAT, 2)
{}
ObExprRepeat::ObExprRepeat(ObIAllocator &alloc)
: ObStringExprOperator(alloc, T_FUN_SYS_REPEAT, N_REPEAT, 2)
{
}
ObExprRepeat::~ObExprRepeat()
{}
{
}
int ObExprRepeat::calc_result_type2(
ObExprResType& type, ObExprResType& text, ObExprResType& count, ObExprTypeCtx& type_ctx) const
int ObExprRepeat::calc_result_type2(ObExprResType &type,
ObExprResType &text,
ObExprResType &count,
ObExprTypeCtx &type_ctx) const
{
int ret = OB_SUCCESS;
text.set_calc_type(common::ObVarcharType);
@ -47,14 +56,22 @@ int ObExprRepeat::calc_result_type2(
if (text.is_null() || count.is_null()) {
res_type = ObVarcharType;
} else if (count.is_literal()) {
const ObObj& obj = count.get_param();
const ObObj &obj = count.get_param();
ObArenaAllocator alloc(ObModIds::OB_SQL_RES_TYPE);
const ObDataTypeCastParams dtc_params = ObBasicSessionInfo::create_dtc_params(type_ctx.get_session());
const ObDataTypeCastParams dtc_params =
ObBasicSessionInfo::create_dtc_params(type_ctx.get_session());
int64_t cur_time = 0;
ObCastCtx cast_ctx(&alloc, &dtc_params, cur_time, CM_WARN_ON_FAIL, CS_TYPE_INVALID);
int64_t count_val = 0;
EXPR_GET_INT64_V2(obj, count_val);
res_type = get_result_type_mysql(text.get_length() * count_val);
ObCastMode cast_mode = CM_NONE;
if (OB_FAIL(ObSQLUtils::get_default_cast_mode(type_ctx.get_session(), cast_mode))) {
LOG_WARN("failed to get default cast mode", K(ret));
} else {
cast_mode |= CM_WARN_ON_FAIL;
ObCastCtx cast_ctx(
&alloc, &dtc_params, cur_time, cast_mode, CS_TYPE_INVALID);
int64_t count_val = 0;
EXPR_GET_INT64_V2(obj, count_val);
res_type = get_result_type_mysql(text.get_length() * count_val);
}
} else {
res_type = ObLongTextType;
}
@ -62,13 +79,13 @@ int ObExprRepeat::calc_result_type2(
type.set_collation_level(text.get_collation_level());
type.set_collation_type(text.get_collation_type());
if (ObVarcharType == type.get_type()) {
/*
* In terms of repeat(A, B), we can know the actual length when B is literal
* constant indeed.
* But we do not want to do this since if we did, the plan cache will not be
* hit. So, no matter B comes from literal constant or column we just set
* length to be OB_MAX_VARCHAR_LENGTH here.
*/
/*
* In terms of repeat(A, B), we can know the actual length when B is literal
* constant indeed.
* But we do not want to do this since if we did, the plan cache will not be
* hit. So, no matter B comes from literal constant or column we just set
* length to be OB_MAX_VARCHAR_LENGTH here.
*/
type.set_length(MAX_CHAR_LENGTH_FOR_VARCAHR_RESULT);
} else if (ob_is_text_tc(type.get_type())) {
const int32_t mbmaxlen = 4;
@ -89,8 +106,13 @@ int ObExprRepeat::calc_result_type2(
return ret;
}
int ObExprRepeat::calc(ObObj& result, const ObObj& text, const ObObj& count, ObIAllocator* allocator,
ObObjType res_type, const int64_t max_result_size)
int ObExprRepeat::calc(
ObObj &result,
const ObObj &text,
const ObObj &count,
ObIAllocator *allocator,
ObObjType res_type,
const int64_t max_result_size)
{
int ret = OB_SUCCESS;
if (text.is_null() || count.is_null()) {
@ -107,36 +129,12 @@ int ObExprRepeat::calc(ObObj& result, const ObObj& text, const ObObj& count, ObI
return ret;
}
int ObExprRepeat::calc_result2(ObObj& result, const ObObj& text, const ObObj& count, ObExprCtx& expr_ctx) const
{
EXPR_DEFINE_CAST_CTX(expr_ctx, CM_NONE);
int ret = OB_SUCCESS;
int64_t max_allow_packet_size = 0;
if (OB_ISNULL(expr_ctx.my_session_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("Unexpected null session in repeat function", K(ret));
} else if (OB_FAIL(expr_ctx.my_session_->get_max_allowed_packet(max_allow_packet_size))) {
if (OB_ENTRY_NOT_EXIST == ret) { // for compatibility
ret = OB_SUCCESS;
max_allow_packet_size = OB_MAX_VARCHAR_LENGTH;
} else {
LOG_WARN("Failed to get max allow packet size", K(ret));
}
}
if (OB_SUCC(ret)) {
if (OB_FAIL(calc(result, text, count, expr_ctx.calc_buf_, get_result_type().get_type(), max_allow_packet_size))) {
LOG_WARN("Calc result error", K(ret));
} else if (OB_LIKELY(!result.is_null())) {
result.set_collation(result_type_);
} else {
// do nothing
}
}
return ret;
}
int ObExprRepeat::repeat(ObString& output, bool& is_null, const ObString& text, const int64_t count,
common::ObIAllocator& allocator, const int64_t max_result_size)
int ObExprRepeat::repeat(ObString &output,
bool &is_null,
const ObString &text,
const int64_t count,
common::ObIAllocator &allocator,
const int64_t max_result_size)
{
is_null = false;
int ret = OB_SUCCESS;
@ -147,23 +145,23 @@ int ObExprRepeat::repeat(ObString& output, bool& is_null, const ObString& text,
// Safe length check
if ((length > max_result_size / count) || (length > INT_MAX / count)) {
LOG_WARN(
"Result of repeat was larger than max_allow_packet_size", K(ret), K(length), K(count), K(max_result_size));
LOG_WARN("Result of repeat was larger than max_allow_packet_size",
K(ret), K(length), K(count), K(max_result_size));
LOG_USER_WARN(OB_ERR_FUNC_RESULT_TOO_LARGE, "repeat", static_cast<int>(max_result_size));
is_null = true;
} else {
// avoid realloc
//avoid realloc
if (1 == count) {
output = text;
} else {
int64_t tot_length = length * count;
char* buf = static_cast<char*>(allocator.alloc(tot_length));
char *buf = static_cast<char *>(allocator.alloc(tot_length));
if (OB_ISNULL(buf)) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_ERROR("alloc memory failed", K(ret), K(tot_length));
} else {
int64_t tmp_count = count;
char* tmp_buf = buf;
char *tmp_buf = buf;
while (tmp_count--) {
MEMCPY(tmp_buf, text.ptr(), length);
tmp_buf += length;
@ -176,8 +174,12 @@ int ObExprRepeat::repeat(ObString& output, bool& is_null, const ObString& text,
return ret;
}
int ObExprRepeat::calc(ObObj& result, const ObObjType res_type, const ObString& text, const int64_t count,
ObIAllocator* allocator, const int64_t max_result_size)
int ObExprRepeat::calc(ObObj &result,
const ObObjType res_type,
const ObString &text,
const int64_t count,
ObIAllocator *allocator,
const int64_t max_result_size)
{
int ret = OB_SUCCESS;
ObString output;
@ -187,6 +189,7 @@ int ObExprRepeat::calc(ObObj& result, const ObObjType res_type, const ObString&
LOG_WARN("null allocator", K(ret), K(allocator));
} else if (false == ob_is_string_type(res_type)) {
ret = OB_INVALID_ARGUMENT;
// ObExprRepeat::calc_result_type2()方法中，规定返回结果的类型一定是属于某个string type
LOG_WARN("make sure res_type is string type", K(ret), K(res_type));
} else if (OB_FAIL(repeat(output, is_null, text, count, *allocator, max_result_size))) {
LOG_WARN("do repeat failed", K(ret));
@ -200,7 +203,7 @@ int ObExprRepeat::calc(ObObj& result, const ObObjType res_type, const ObString&
return ret;
}
int ObExprRepeat::cg_expr(ObExprCGCtx&, const ObRawExpr&, ObExpr& rt_expr) const
int ObExprRepeat::cg_expr(ObExprCGCtx &, const ObRawExpr &, ObExpr &rt_expr) const
{
int ret = OB_SUCCESS;
CK(2 == rt_expr.arg_cnt_);
@ -208,13 +211,14 @@ int ObExprRepeat::cg_expr(ObExprCGCtx&, const ObRawExpr&, ObExpr& rt_expr) const
return ret;
}
int ObExprRepeat::eval_repeat(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
int ObExprRepeat::eval_repeat(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
{
int ret = OB_SUCCESS;
ObDatum* text = NULL;
ObDatum* count = NULL;
ObDatum *text = NULL;
ObDatum *count = NULL;
int64_t max_size = 0;
if (OB_FAIL(expr.args_[0]->eval(ctx, text)) || OB_FAIL(expr.args_[1]->eval(ctx, count))) {
if (OB_FAIL(expr.args_[0]->eval(ctx, text))
|| OB_FAIL(expr.args_[1]->eval(ctx, count))) {
LOG_WARN("evaluate parameters failed", K(ret));
} else if (text->is_null() || count->is_null()) {
expr_datum.set_null();
@ -224,7 +228,8 @@ int ObExprRepeat::eval_repeat(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_
ObExprStrResAlloc expr_res_alloc(expr, ctx);
bool is_null = false;
ObString output;
if (OB_FAIL(repeat(output, is_null, text->get_string(), count->get_int(), expr_res_alloc, max_size))) {
if (OB_FAIL(repeat(output, is_null,
text->get_string(), count->get_int(), expr_res_alloc, max_size))) {
LOG_WARN("do repeat failed", K(ret));
} else {
if (is_null) {