113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
#pragma once
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#include <vector>
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#include <string>
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#include <queue>
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#ifndef _WIN32
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#include <stddef.h>
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#endif
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#include "base/define.h"
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#include "base/error.h"
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#include "util/json.h"
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namespace ylib::sqlite
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{
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class result;
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class conn;
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class prepare_statement;
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struct field {
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uint32 index = 0;
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std::string name;
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std::string type_name;
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};
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struct sqlite_conn_info
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{
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sqlite_conn_info() = default;
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std::string database;
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};
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class result : public ylib::error_base
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{
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public:
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result(void* handle);
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~result();
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// 列名
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std::string field_name(uint32 index);
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// 列类型
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std::string field_type(uint32 index);
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std::string field_type(const std::string& name);
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// 列数量
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uint32 field_count();
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// 下一行
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bool next();
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int32 get_int32(uint32 index);
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int32 get_int32(const std::string& name);
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int64 get_int64(uint32 index);
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int64 get_int64(const std::string& name);
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std::string get_string(uint32 index);
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std::string get_string(const std::string& name);
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double get_double(uint32 index);
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double get_double(const std::string& name);
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//ylib::buffer get_blob(uint32 index);
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//ylib::buffer get_blob(const std::string& name);
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private:
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void* m_handle = nullptr;
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uint32 m_field_count = 0;
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std::vector<ylib::sqlite::field> m_fields;
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};
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class prepare_statement : public ylib::error_base {
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public:
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prepare_statement();
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~prepare_statement();
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void set_bigint(uint32 index, const std::string& value);
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void set_double(uint32 index, double value);
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void set_int32(uint32 index, int32 value);
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void set_int64(uint32 index, int64 value);
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void set_null(uint32 index);
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void set_string(uint32 index, const std::string& value);
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void set_string(uint32 index, const char* data, int size);
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void clear();
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uint64 update();
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ylib::sqlite::result* query();
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friend class ylib::sqlite::conn;
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private:
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ylib::sqlite::result* m_result = nullptr;
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void* m_handle = nullptr;
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std::queue<std::shared_ptr<std::istringstream>> m_blobs;
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};
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class conn : public ylib::error_base
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{
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public:
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conn();
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~conn();
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bool start(const ylib::sqlite::sqlite_conn_info& info);
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void close();
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void clear();
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ylib::sqlite::prepare_statement* setsql(const std::string& sql);
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uint64 insert_id();
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bool begin(bool autocommit = false);
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bool commit();
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bool rollback();
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private:
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void* m_handle = nullptr;
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ylib::sqlite::sqlite_conn_info m_info;
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ylib::sqlite::prepare_statement *m_ppst = nullptr;
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// 事务状态 0=未开启 1=已开启 2=执行完毕
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int m_sw = 0;
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};
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}
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