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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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27
src/sql/engine/expr/ob_expr_json_unquote.cpp
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@ -58,12 +58,13 @@ int ObExprJsonUnquote::calc_result_type1(ObExprResType &type,
return ret;
}
template <typename T>
int ObExprJsonUnquote::calc(const T &data, ObObjType type, ObCollationType cs_type,
int ObExprJsonUnquote::calc(ObEvalCtx &ctx, const ObDatum &data, ObDatumMeta meta, bool has_lob_header,
ObIAllocator *allocator, ObJsonBuffer &j_buf, bool &is_null)
{
INIT_SUCC(ret);
ObIJsonBase *j_base = NULL;
ObObjType type = meta.type_;
ObCollationType cs_type = meta.cs_type_;
if (type == ObIntType || type == ObDoubleType) {
// special for mathematical function, consistent with mysql
@ -84,9 +85,10 @@ int ObExprJsonUnquote::calc(const T &data, ObObjType type, ObCollationType cs_ty
} else {
ObIJsonBase *j_base = NULL;
ObString j_str = data.get_string();
size_t len = j_str.length();
ObJsonInType j_in_type = ObJsonExprHelper::get_json_internal_type(type);
if (ob_is_string_type(type) && (len < 2 || j_str[0] != '"' || j_str[len - 1] != '"')) {
if (OB_FAIL(ObTextStringHelper::read_real_string_data(*allocator, data, meta, has_lob_header, j_str))) {
LOG_WARN("fail to get real data.", K(ret), K(j_str));
} else if (ob_is_string_type(type) && (j_str.length() < 2 || j_str[0] != '"' || j_str[j_str.length() - 1] != '"')) {
if (OB_FAIL(j_buf.append(j_str))) {
LOG_WARN("failed: copy original string", K(ret), K(j_str));
}
@ -114,27 +116,18 @@ int ObExprJsonUnquote::eval_json_unquote(const ObExpr &expr, ObEvalCtx &ctx, ObD
ObDatum* json_datum = NULL;
ObEvalCtx::TempAllocGuard tmp_alloc_g(ctx);
common::ObArenaAllocator &temp_allocator = tmp_alloc_g.get_allocator();
ObObjType val_type = arg->datum_meta_.type_;
ObCollationType cs_type = arg->datum_meta_.cs_type_;
ObJsonBuffer j_buf(&temp_allocator);
bool is_null = false;
if (OB_FAIL(arg->eval(ctx, json_datum))) {
ret = OB_ERR_INVALID_DATATYPE;
LOG_WARN("error, eval json args datum failed", K(ret));
} else if (OB_FAIL(calc(*json_datum, val_type, cs_type, &temp_allocator, j_buf, is_null))) {
LOG_WARN("fail to calc json unquote result in new engine", K(ret), K(val_type));
} else if (OB_FAIL(calc(ctx, *json_datum, arg->datum_meta_, arg->obj_meta_.has_lob_header(), &temp_allocator, j_buf, is_null))) {
LOG_WARN("fail to calc json unquote 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 unquote 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;
}