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support json type

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This commit is contained in:
xj0
2022-02-08 14:58:13 +08:00
committed by LINxiansheng
parent 4b25bac8d0
commit e5f59ea074
241 changed files with 46116 additions and 749 deletions
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208
src/sql/engine/expr/ob_expr_json_object.cpp Normal file
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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
// This file contains implementation of json_object.
#define USING_LOG_PREFIX SQL_ENG
#include "ob_expr_json_object.h"
#include "sql/engine/expr/ob_expr_json_func_helper.h"
using namespace oceanbase::common;
using namespace oceanbase::sql;
namespace oceanbase
{
namespace sql
{
ObExprJsonObject::ObExprJsonObject(ObIAllocator &alloc)
: ObFuncExprOperator(alloc, T_FUN_SYS_JSON_OBJECT, N_JSON_OBJECT, OCCUR_AS_PAIR, NOT_ROW_DIMENSION)
{
}
ObExprJsonObject::~ObExprJsonObject()
{
}
int ObExprJsonObject::calc_result_typeN(ObExprResType& type,
ObExprResType* types_stack,
int64_t param_num,
ObExprTypeCtx& type_ctx) const
{
UNUSED(type_ctx);
INIT_SUCC(ret);
if (OB_UNLIKELY(param_num < 0 || param_num % 2 != 0)) {
ret = OB_ERR_PARAM_SIZE;
const ObString name = "json_object";
LOG_USER_ERROR(OB_ERR_PARAM_SIZE, name.length(), name.ptr());
} else {
type.set_json();
for (int64_t i = 0; OB_SUCC(ret) && i < param_num; i += 2) {
if ((types_stack[i].get_type() == ObNullType)) {
ret = OB_ERR_JSON_DOCUMENT_NULL_KEY;
LOG_USER_ERROR(OB_ERR_JSON_DOCUMENT_NULL_KEY);
} else if (ob_is_string_type(types_stack[i].get_type())) {
if (types_stack[i].get_charset_type() == CHARSET_BINARY) {
ret = OB_ERR_INVALID_JSON_CHARSET;
LOG_USER_ERROR(OB_ERR_INVALID_JSON_CHARSET);
} else if (types_stack[i].get_charset_type() != CHARSET_UTF8MB4) {
types_stack[i].set_calc_collation_type(CS_TYPE_UTF8MB4_BIN);
}
} else {
types_stack[i].set_calc_type(ObLongTextType);
types_stack[i].set_calc_collation_type(CS_TYPE_UTF8MB4_BIN);
}
if (OB_SUCC(ret)) {
if (ob_is_string_type(types_stack[i+1].get_type())) {
if (types_stack[i+1].get_charset_type() != CHARSET_UTF8MB4) {
types_stack[i+1].set_calc_collation_type(CS_TYPE_UTF8MB4_BIN);
}
} else if (types_stack[i+1].get_type() == ObJsonType) {
types_stack[i+1].set_calc_collation_type(CS_TYPE_UTF8MB4_BIN);
}
}
}
}
return ret;
}
// for old sql engine
int ObExprJsonObject::calc_resultN(ObObj &result, const ObObj *objs,
int64_t param_num, ObExprCtx &expr_ctx) const
{
INIT_SUCC(ret);
ObIAllocator *allocator = expr_ctx.calc_buf_;
ObJsonObject j_obj(allocator);
ObIJsonBase *j_base = &j_obj;
if (result_type_.get_collation_type() != CS_TYPE_UTF8MB4_BIN) {
ret = OB_ERR_INVALID_JSON_CHARSET;
LOG_WARN("invalid out put charset", K(ret), K(result_type_));
} else if (OB_ISNULL(objs)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid arguments", K(ret), K(objs), K(param_num));
} else if (OB_ISNULL(allocator)) { // check allocator
ret = OB_NOT_INIT;
LOG_WARN("allcator not init", K(ret));
}
for (int i = 0; OB_SUCC(ret) && i < param_num; i += 2) {
ObString key = objs[i].get_string();
bool is_bool = false;
ObIJsonBase *j_val = NULL;
if (objs[i].is_null()) { // key is null
ret = OB_ERR_JSON_DOCUMENT_NULL_KEY;
LOG_USER_ERROR(OB_ERR_JSON_DOCUMENT_NULL_KEY);
LOG_WARN("failed:json key is null", K(ret));
} else if (OB_FAIL(get_param_is_boolean(expr_ctx, objs[i+1], is_bool))) {
LOG_WARN("get_param_is_boolean failed", K(ret));
} else if (OB_FAIL(ObJsonExprHelper::get_json_val(objs[i+1], expr_ctx, is_bool,
allocator, j_val))) {
ret = OB_ERR_INVALID_JSON_TEXT_IN_PARAM;
LOG_USER_ERROR(OB_ERR_INVALID_JSON_TEXT_IN_PARAM);
} else if (OB_FAIL(j_base->object_add(key, j_val))) {
if (ret == OB_ERR_JSON_DOCUMENT_NULL_KEY) {
LOG_USER_ERROR(OB_ERR_JSON_DOCUMENT_NULL_KEY);
}
LOG_WARN("failed:append json object kv failed", K(ret));
}
}
if (OB_SUCC(ret)) {
ObString raw_bin;
if (OB_FAIL(j_base->get_raw_binary(raw_bin, allocator))) {
LOG_WARN("failed: get json raw binary", K(ret));
} else {
uint64_t length = raw_bin.length();
char *buf = reinterpret_cast<char *>(allocator->alloc(length));
if (OB_ISNULL(buf)) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("failed: alloc memory for json object result", K(ret), K(length));
} else {
MEMCPY(buf, raw_bin.ptr(), length);
result.set_collation_type(CS_TYPE_UTF8MB4_BIN);
result.set_string(ObJsonType, buf, length);
}
}
}
return ret;
}
// for new sql engine
int ObExprJsonObject::eval_json_object(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res)
{
INIT_SUCC(ret);
common::ObArenaAllocator &temp_allocator = ctx.get_reset_tmp_alloc();
ObJsonObject j_obj(&temp_allocator);
ObIJsonBase *j_base = &j_obj;
if (expr.datum_meta_.cs_type_ != CS_TYPE_UTF8MB4_BIN) {
ret = OB_ERR_INVALID_JSON_CHARSET;
LOG_WARN("invalid out put charset", K(ret), K(expr.datum_meta_.cs_type_));
}
for (int32 i = 0; OB_SUCC(ret) && i < expr.arg_cnt_; i += 2) {
ObExpr *arg = expr.args_[i];
ObDatum *json_datum = NULL;
if (OB_FAIL(arg->eval(ctx, json_datum))) {
LOG_WARN("failed: eval json args datum failed", K(ret));
} else if (json_datum->is_null()) {
ret = OB_ERR_JSON_DOCUMENT_NULL_KEY;
LOG_USER_ERROR(OB_ERR_JSON_DOCUMENT_NULL_KEY);
LOG_WARN("failed:json key is null", K(ret));
} else {
ObString key = json_datum->get_string();
ObIJsonBase *j_val = NULL;
if (OB_FAIL(ObJsonExprHelper::get_json_val(expr, ctx, &temp_allocator, i+1, j_val))) {
ret = OB_ERR_INVALID_JSON_TEXT_IN_PARAM;
LOG_USER_ERROR(OB_ERR_INVALID_JSON_TEXT_IN_PARAM);
} else if (OB_FAIL(j_base->object_add(key, j_val))) {
if (ret == OB_ERR_JSON_DOCUMENT_NULL_KEY) {
LOG_USER_ERROR(OB_ERR_JSON_DOCUMENT_NULL_KEY);
}
LOG_WARN("failed: append json object kv", K(ret));
}
}
}
if (OB_SUCC(ret)) {
ObString raw_bin;
if (OB_FAIL(j_base->get_raw_binary(raw_bin, &temp_allocator))) {
LOG_WARN("failed: get json raw binary", K(ret));
} else {
uint64_t length = raw_bin.length();
char *buf = expr.get_str_res_mem(ctx, length);
if (buf) {
MEMCPY(buf, raw_bin.ptr(), length);
res.set_string(buf, length);
} else {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("failed: alloc memory for json object result.", K(ret), K(length));
}
}
}
return ret;
}
int ObExprJsonObject::cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
ObExpr &rt_expr) const
{
UNUSED(expr_cg_ctx);
UNUSED(raw_expr);
rt_expr.eval_func_ = eval_json_object;
return OB_SUCCESS;
}
}
}