60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
/**
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef OCEANBASE_SQL_OB_EXPR_JSON_SEARCH_H_
|
|
#define OCEANBASE_SQL_OB_EXPR_JSON_SEARCH_H_
|
|
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
#include "lib/json_type/ob_json_tree.h"
|
|
#include "lib/json_type/ob_json_base.h"
|
|
|
|
using namespace oceanbase::common;
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
|
|
typedef common::ObVector<ObJsonBuffer *> ObJsonBufferVector;
|
|
typedef common::ObSortedVector<ObJsonBuffer *> ObJsonBufferSortedVector;
|
|
|
|
class ObExprJsonSearch : public ObFuncExprOperator
|
|
{
|
|
public:
|
|
explicit ObExprJsonSearch(common::ObIAllocator &alloc);
|
|
virtual ~ObExprJsonSearch();
|
|
virtual int calc_result_typeN(ObExprResType& type,
|
|
ObExprResType* types,
|
|
int64_t param_num,
|
|
common::ObExprTypeCtx& type_ctx)
|
|
const override;
|
|
static int eval_json_search(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const override;
|
|
virtual bool need_rt_ctx() const override { return true; }
|
|
private:
|
|
static int add_path_unique(const ObJsonBuffer* path, ObJsonBufferSortedVector &duplicates, ObJsonBufferVector &hits);
|
|
static int path_add_key(ObJsonBuffer &path, ObString key);
|
|
static int find_matches(common::ObIAllocator *allocator,
|
|
const ObIJsonBase *j_base,
|
|
ObJsonBuffer &path,
|
|
ObJsonBufferVector &hits,
|
|
ObJsonBufferSortedVector &duplicates,
|
|
const ObString &target,
|
|
bool one_match,
|
|
const int32_t &escape_wc);
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprJsonSearch);
|
|
};
|
|
|
|
} // sql
|
|
} // oceanbase
|
|
#endif // OCEANBASE_SQL_OB_EXPR_JSON_SEARCH_H_
|