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[FEAT MERGE] Lob SQL refactoring (Mem-LobLocator, expressions and dbms_lob adaptions)

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Co-authored-by: chaser-ch <chaser.ch@antgroup.com>
This commit is contained in:
obdev
2023-01-28 20:40:15 +08:00
committed by ob-robot
parent 4bb1033505
commit 3d4f554258
350 changed files with 19091 additions and 3918 deletions
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45
src/sql/engine/expr/ob_expr_length.cpp
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@ -21,6 +21,7 @@
//#include "sql/engine/expr/ob_expr_promotion_util.h"
#include "sql/session/ob_sql_session_info.h"
#include "sql/engine/expr/ob_expr_util.h"
#include "sql/engine/expr/ob_expr_lob_utils.h"
namespace oceanbase
{
@ -61,7 +62,11 @@ int ObExprLength::calc_result_type1(ObExprResType &type, ObExprResType &text,
type.set_int();
type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].scale_);
type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
text.set_calc_type(common::ObVarcharType);
if (ob_is_text_tc(text.get_type()) && (session->get_exec_min_cluster_version() >= CLUSTER_VERSION_4_1_0_0)) {
// no need to do cast, save memory
} else {
text.set_calc_type(common::ObVarcharType);
}
}
OX(ObExprOperator::calc_result_flag1(type, text));
}
@ -88,7 +93,9 @@ int ObExprLength::cg_expr(ObExprCGCtx &op_cg_ctx, const ObRawExpr &raw_expr, ObE
} else if (lib::is_oracle_mode()) {
rt_expr.eval_func_ = ObExprLength::calc_oracle_mode;
} else {
CK(ObVarcharType == text_type);
if (op_cg_ctx.session_->get_exec_min_cluster_version() < CLUSTER_VERSION_4_1_0_0) {
CK(ObVarcharType == text_type);
}
rt_expr.eval_func_ = ObExprLength::calc_mysql_mode;
}
}
@ -112,14 +119,22 @@ int ObExprLength::calc_oracle_mode(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &
expr_datum.set_null();
} else {
ObString m_text = text_datum->get_string();
size_t c_len = ObCharset::strlen_char(expr.args_[0]->datum_meta_.cs_type_, m_text.ptr(),
static_cast<int64_t>(m_text.length()));
ObNumStackOnceAlloc tmp_alloc;
number::ObNumber num;
if (OB_FAIL(num.from(static_cast<int64_t>(c_len), tmp_alloc))) {
LOG_WARN("copy number fail", K(ret));
} else {
expr_datum.set_number(num);
int64_t c_len = 0;
if (!is_lob_storage(expr.args_[0]->datum_meta_.type_)) {
c_len = ObCharset::strlen_char(expr.args_[0]->datum_meta_.cs_type_, m_text.ptr(),
static_cast<int64_t>(m_text.length()));
} else if (OB_FAIL(ObTextStringHelper::get_char_len(ctx, *text_datum, expr.args_[0]->datum_meta_,
expr.args_[0]->obj_meta_.has_lob_header(), c_len))) {
LOG_WARN("failed to get char len for lob type", K(ret), K(expr.args_[0]->datum_meta_.type_));
}
if (OB_SUCC(ret)) {
ObNumStackOnceAlloc tmp_alloc;
number::ObNumber num;
if (OB_FAIL(num.from(static_cast<int64_t>(c_len), tmp_alloc))) {
LOG_WARN("copy number fail", K(ret));
} else {
expr_datum.set_number(num);
}
}
}
return ret;
@ -132,8 +147,16 @@ int ObExprLength::calc_mysql_mode(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &e
LOG_WARN("eval param value failed", K(ret));
} else if (text_datum->is_null()) {
expr_datum.set_null();
} else {
} else if (!is_lob_storage(expr.args_[0]->datum_meta_.type_)) {
expr_datum.set_int(static_cast<int64_t>(text_datum->len_));
} else { // text tc only
ObLobLocatorV2 locator(text_datum->get_string(), expr.args_[0]->obj_meta_.has_lob_header());
int64_t lob_data_byte_len = 0;
if (OB_FAIL(locator.get_lob_data_byte_len(lob_data_byte_len))) {
LOG_WARN("get lob data byte length failed", K(ret), K(locator));
} else {
expr_datum.set_int(static_cast<int64_t>(lob_data_byte_len));
}
}
return ret;
}