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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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21
src/sql/engine/expr/ob_expr_to_clob.cpp
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@ -16,6 +16,7 @@
#include "sql/session/ob_sql_session_info.h"
#include "objit/common/ob_item_type.h"
#include "lib/oblog/ob_log.h"
#include "sql/engine/expr/ob_expr_lob_utils.h"
namespace oceanbase
{
@ -71,6 +72,8 @@ int ObExprToClob::calc_to_clob_expr(const ObExpr &expr, ObEvalCtx &ctx,
{
int ret = OB_SUCCESS;
ObDatum *arg = NULL;
ObObjType input_type = expr.args_[0]->datum_meta_.type_;
ObCollationType cs_type = expr.args_[0]->datum_meta_.cs_type_;
if (OB_UNLIKELY(1 != expr.arg_cnt_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid arg cnt or arg res type", K(ret), K(expr.arg_cnt_));
@ -78,13 +81,23 @@ int ObExprToClob::calc_to_clob_expr(const ObExpr &expr, ObEvalCtx &ctx,
LOG_WARN("eval param failed", K(ret));
} else if (arg->is_null()) {
res.set_null();
} else {
} else if (ob_is_clob(input_type, cs_type)) {
res.set_datum(*arg);
if (!res.is_null() && res.len_ > OB_MAX_LONGTEXT_LENGTH) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("wrong length of result in function to_clob", K(ret), K(res.len_));
} else {
ObString raw_string = arg->get_string();
ObTextStringDatumResult str_result(expr.datum_meta_.type_, &expr, &ctx, &res);
if (OB_FAIL(str_result.init(raw_string.length()))) {
LOG_WARN("init lob result failed");
} else if (OB_FAIL(str_result.append(raw_string.ptr(), raw_string.length()))) {
LOG_WARN("append lob result failed");
} else {
str_result.set_result();
}
}
if (OB_SUCC(ret) && !res.is_null() && res.len_ > OB_MAX_LONGTEXT_LENGTH) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("wrong length of result in function to_clob", K(ret), K(res.len_));
}
return ret;
}