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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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31
src/sql/engine/expr/ob_expr_json_quote.cpp
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@ -57,12 +57,12 @@ int ObExprJsonQuote::calc_result_type1(ObExprResType &type,
}
template <typename T>
int ObExprJsonQuote::calc(const T &data, ObObjType type, ObCollationType cs_type,
ObJsonBuffer &j_buf, bool &is_null)
int ObExprJsonQuote::calc(ObEvalCtx &ctx, ObIAllocator &temp_allocator, const ObDatum &data,
ObDatumMeta meta, bool has_lob_header, ObJsonBuffer &j_buf, bool &is_null)
{
INIT_SUCC(ret);
ObObjType type = meta.type_;
ObCollationType cs_type = meta.cs_type_;
if (type == ObIntType || type == ObDoubleType) {
// special for mathematical function, consistent with mysql
if (data.is_null()) {
@ -81,8 +81,9 @@ int ObExprJsonQuote::calc(const T &data, ObObjType type, ObCollationType cs_type
LOG_WARN("fail to ensure collation", K(ret), K(type), K(cs_type));
} else { // string type
ObString json_val = data.get_string();
size_t len = json_val.length();
if (len == 0) {
if (OB_FAIL(ObTextStringHelper::read_real_string_data(temp_allocator, data, meta, has_lob_header, json_val))) {
LOG_WARN("fail to get real data.", K(ret), K(json_val));
} else if (json_val.length() == 0) {
if (OB_FAIL(j_buf.append("\"\"", 2))) {
LOG_WARN("failed: jbuf append", K(ret));
}
@ -101,26 +102,18 @@ int ObExprJsonQuote::eval_json_quote(const ObExpr &expr, ObEvalCtx &ctx, ObDatum
common::ObArenaAllocator &temp_allocator = tmp_alloc_g.get_allocator();
ObJsonBuffer j_buf(&temp_allocator);
ObExpr *arg = expr.args_[0];
ObObjType type = arg->datum_meta_.type_;
ObCollationType cs_type = arg->datum_meta_.cs_type_;
ObDatum* json_datum = NULL;
bool is_null = false;
if (OB_FAIL(arg->eval(ctx, json_datum))) {
LOG_WARN("failed: eval json args datum.", K(ret));
} else if (OB_FAIL(calc(*json_datum, type, cs_type, j_buf, is_null))) {
LOG_WARN("fail to calc json quote result in new engine", K(ret), K(type));
} else if (OB_FAIL(calc(ctx, temp_allocator, *json_datum, arg->datum_meta_,
arg->obj_meta_.has_lob_header(), j_buf, is_null))) {
LOG_WARN("fail to calc json quote result in new engine", K(ret), K(arg->datum_meta_));
} else if (is_null) {
res.set_null();
} else {
char *buf = expr.get_str_res_mem(ctx, j_buf.length());
if (OB_ISNULL(buf)) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("fail to alloc memory for json quote result", K(ret), K(j_buf.length()));
} else {
MEMCPY(buf, j_buf.ptr(), j_buf.length());
res.set_string(buf, j_buf.length());
}
} else if (OB_FAIL(ObJsonExprHelper::pack_json_str_res(expr, ctx, res, j_buf))) {
LOG_WARN("fail to pack json result", K(ret));
}
return ret;