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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SRC_TRACE_PROCESSOR_SQLITE_DB_SQLITE_TABLE_H_
#define SRC_TRACE_PROCESSOR_SQLITE_DB_SQLITE_TABLE_H_
#include "src/trace_processor/db/table.h"
#include "src/trace_processor/sqlite/sqlite_table.h"
namespace perfetto {
namespace trace_processor {
// Implements the SQLite table interface for db tables.
class DbSqliteTable : public SqliteTable {
public:
class Cursor final : public SqliteTable::Cursor {
public:
explicit Cursor(DbSqliteTable* table);
// Implementation of SqliteTable::Cursor.
int Filter(const QueryConstraints& qc, sqlite3_value** argv) override;
int Next() override;
int Eof() override;
int Column(sqlite3_context*, int N) override;
private:
const Table* initial_db_table_ = nullptr;
base::Optional<Table> db_table_;
base::Optional<Table::Iterator> iterator_;
std::vector<Constraint> constraints_;
std::vector<Order> orders_;
};
static void RegisterTable(sqlite3* db,
const Table* table,
const std::string& name);
DbSqliteTable(sqlite3*, const Table* table);
virtual ~DbSqliteTable() override;
// Table implementation.
util::Status Init(int,
const char* const*,
SqliteTable::Schema*) override final;
std::unique_ptr<SqliteTable::Cursor> CreateCursor() override;
int BestIndex(const QueryConstraints&, BestIndexInfo*) override;
private:
double EstimateCost(const QueryConstraints& qc);
const Table* table_ = nullptr;
};
} // namespace trace_processor
} // namespace perfetto
#endif // SRC_TRACE_PROCESSOR_SQLITE_DB_SQLITE_TABLE_H_
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