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oracle json construct function refaction && oracle json expr option clause syntax support

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This commit is contained in:
obdev
2023-08-02 06:54:16 +00:00
committed by ob-robot
parent 755b53ef5e
commit 90def6ad4a
16 changed files with 478 additions and 367 deletions
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112
src/sql/engine/expr/ob_expr_json_array.cpp
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@ -100,7 +100,14 @@ int ObExprJsonArray::calc_result_typeN(ObExprResType& type,
// returning type : 2
if (OB_SUCC(ret)) {
ObExprResType dst_type;
if (OB_FAIL(ObJsonExprHelper::get_cast_type(types_stack[param_num - 2], dst_type))) {
dst_type.set_type(ObJsonType);
dst_type.set_collation_type(CS_TYPE_UTF8MB4_BIN);
int16_t length_semantics = (OB_NOT_NULL(type_ctx.get_session())
? type_ctx.get_session()->get_actual_nls_length_semantics() : LS_BYTE);
dst_type.set_length((ObAccuracy::DDL_DEFAULT_ACCURACY[ObJsonType]).get_length());
dst_type.set_collation_level(CS_LEVEL_IMPLICIT);
if (ele_idx > 0 && OB_FAIL(ObJsonExprHelper::parse_res_type(types_stack[0], types_stack[param_num - 2], dst_type, type_ctx))) {
LOG_WARN("get cast dest type failed", K(ret));
} else if (OB_FAIL(ObJsonExprHelper::set_dest_type(types_stack[0], type, dst_type, type_ctx))) {
LOG_WARN("set dest type failed", K(ret));
@ -157,15 +164,17 @@ int ObExprJsonArray::eval_ora_json_array(const ObExpr &expr, ObEvalCtx &ctx, ObD
ObObjType dst_type;
int32_t dst_len = OB_MAX_TEXT_LENGTH;
int64_t& opt_res_type = opt_array[OPT_TYPE_ID];
if (OB_SUCC(ret) && OB_FAIL(ObJsonExprHelper::eval_and_check_res_type(opt_res_type, dst_type, dst_len))) {
if (OB_FAIL(ret)) {
} else if (opt_res_type == 0) {
dst_type = ObJsonType;
} else if (OB_FAIL(ObJsonExprHelper::eval_and_check_res_type(opt_res_type, dst_type, dst_len))) {
LOG_WARN("fail to check returning type", K(ret));
}
int64_t& opt_null = opt_array[OPT_NULL_ID];
ObJsonBuffer jsn_buf(&temp_allocator);
if (OB_SUCC(ret) && OB_FAIL(jsn_buf.append("["))) {
LOG_WARN("fail to append curly brace", K(ret));
}
bool is_strict = (opt_strict > 0 || (dst_type == ObJsonType && opt_res_type > 0));
bool is_null_absent = opt_null > 0 ;
ObJsonArray j_arr(&temp_allocator);
for (uint32_t i = 0; OB_SUCC(ret) && i < max_val_idx; i += 2) {
// [expr][format-json]: i -> expr, i + i -> format json
@ -173,6 +182,7 @@ int ObExprJsonArray::eval_ora_json_array(const ObExpr &expr, ObEvalCtx &ctx, ObD
ObExpr *opt_expr = expr.args_[i + 1];
ObObjType val_type = opt_expr->datum_meta_.type_;
bool is_format_json = false;
ObIJsonBase* j_val = nullptr;
if (OB_UNLIKELY(OB_FAIL(opt_expr->eval(ctx, opt_format)))) {
LOG_WARN("eval json arg failed", K(ret));
} else if (val_type == ObNullType || opt_format->is_null()) {
@ -183,89 +193,33 @@ int ObExprJsonArray::eval_ora_json_array(const ObExpr &expr, ObEvalCtx &ctx, ObD
is_format_json = (opt_format->get_int() > 0);
}
ObExpr *val_expr = expr.args_[i];
val_type = val_expr->datum_meta_.type_;
ObCollationType cs_type = val_expr->datum_meta_.cs_type_;
ObScale scale = val_expr->datum_meta_.scale_;
ObDatum* j_datum = nullptr;
bool can_only_be_null = false;
if (OB_SUCC(ret) && is_format_json
&& (!ObJsonExprHelper::is_convertible_to_json(val_type) || val_type == ObJsonType)) {
if (val_type == ObObjType::ObNumberType) {
can_only_be_null = true;
} else {
ret = OB_ERR_INVALID_TYPE_FOR_OP;
LOG_USER_ERROR(OB_ERR_INVALID_TYPE_FOR_OP, "CHAR", ob_obj_type_str(val_type));
}
}
if (OB_FAIL(ret)) {
} else if (OB_FAIL(val_expr->eval(ctx, j_datum))) {
LOG_WARN("eval json arg failed", K(ret), K(val_type));
} else if (can_only_be_null && !j_datum->is_null()) {
ret = OB_ERR_INVALID_TYPE_FOR_OP;
LOG_USER_ERROR(OB_ERR_INVALID_TYPE_FOR_OP, "CHAR", ob_obj_type_str(val_type));
} else if (j_datum->is_null()) {
if (opt_null == 0) {
if (OB_FAIL(jsn_buf.append("null"))) {
LOG_WARN("failed to append null", K(ret));
}
} else {
continue;
}
} else if (ObJsonExprHelper::is_convertible_to_json(val_type) || ob_is_raw(val_type)) {
if (OB_FAIL(ObJsonExprHelper::transform_convertible_2String(*val_expr, ctx, *j_datum,
val_type,
cs_type,
jsn_buf,
val_expr->obj_meta_.has_lob_header(),
is_format_json,
opt_strict == 1, i))) {
LOG_WARN("failed to transform to string", K(ret), K(val_type));
}
} else if (OB_FAIL(ObJsonExprHelper::transform_scalar_2String(ctx, *j_datum,
val_type,
scale,
ctx.exec_ctx_.get_my_session()->get_timezone_info(),
jsn_buf))) {
LOG_WARN("fail to parse value to json base.", K(ret), K(val_type));
} else if (OB_FAIL(ObJsonExprHelper::eval_oracle_json_val(
expr.args_[i], ctx, &temp_allocator, j_val, is_format_json, is_strict, false))) {
LOG_WARN("failed to get json value node.", K(ret), K(val_type));
} else if (is_null_absent && j_val->json_type() == ObJsonNodeType::J_NULL) {
} else if (OB_FAIL(j_arr.append(static_cast<ObJsonNode*>(j_val)))) {
LOG_WARN("failed to append in array.", K(ret), K(i));
}
if (OB_SUCC(ret) && i + 2 < max_val_idx && OB_FAIL(jsn_buf.append(","))) {
LOG_WARN("failed to append comma", K(ret));
}
}
// 添加右括号前删除多余的','
if (OB_SUCC(ret) && jsn_buf.back() == ',') {
jsn_buf.set_length(jsn_buf.length() - 1);
}
if (OB_SUCC(ret) && jsn_buf.append("]")) {
LOG_WARN("failed to append brace", K(ret), K(jsn_buf.length()));
}
if (OB_SUCC(ret)) {
ObString j_string;
j_string.assign_ptr(jsn_buf.ptr(), jsn_buf.length());
ObJsonBuffer string_buffer(&temp_allocator);
ObString res_string;
ObJsonNode* j_base = nullptr;
uint32_t parse_flag = ObJsonParser::JSN_STRICT_FLAG;
ADD_FLAG_IF_NEED(opt_strict != 1, parse_flag, ObJsonParser::JSN_RELAXED_FLAG);
if (dst_type == ObJsonType &&
OB_FAIL(ObJsonParser::get_tree(&temp_allocator,
j_string,
j_base,
parse_flag))) {
LOG_WARN("fail to get json tree.", K(ret));
} else if (dst_type == ObJsonType) {
if (OB_FAIL(j_base->get_raw_binary(res_string, &temp_allocator))) {
if (dst_type == ObJsonType) {
if (OB_FAIL(j_arr.get_raw_binary(res_string, &temp_allocator))) {
LOG_WARN("failed: get json raw binary", K(ret));
}
} else {
res_string.assign_ptr(j_string.ptr(), j_string.length());
if (OB_FAIL(string_buffer.reserve(j_arr.get_serialize_size()))) {
LOG_WARN("fail to reserve string.", K(ret), K(j_arr.get_serialize_size()));
} else if (OB_FAIL(j_arr.print(string_buffer, true, false))) {
LOG_WARN("failed: get json string text", K(ret));
} else {
res_string.assign_ptr(string_buffer.ptr(), string_buffer.length());
}
}
if (OB_SUCC(ret)) {
@ -276,7 +230,7 @@ int ObExprJsonArray::eval_ora_json_array(const ObExpr &expr, ObEvalCtx &ctx, ObD
LOG_WARN("dst_len fail to string.", K(ret));
}
ret = OB_OPERATE_OVERFLOW;
LOG_USER_ERROR(OB_OPERATE_OVERFLOW, res_ptr, "json_array");
LOG_USER_ERROR(OB_OPERATE_OVERFLOW, res_ptr, N_JSON_ARRAY);
} else if (OB_FAIL(ObJsonExprHelper::pack_json_str_res(expr, ctx, res, res_string))) {
LOG_WARN("fail to pack ressult.", K(ret));
}