123 lines
2.6 KiB
C++
123 lines
2.6 KiB
C++
#pragma once
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#include <string>
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#include <vector>
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#include <stdexcept>
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#include <chrono>
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#include <memory>
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namespace mapbox {
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namespace sqlite {
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enum OpenFlag : int {
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ReadOnly = 0x00000001,
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ReadWrite = 0x00000002,
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Create = 0x00000004,
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NoMutex = 0x00008000,
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FullMutex = 0x00010000,
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SharedCache = 0x00020000,
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PrivateCache = 0x00040000,
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};
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struct Exception : std::runtime_error {
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enum Code : int {
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OK = 0,
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CANTOPEN = 14,
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NOTADB = 26
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};
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Exception(int err, const char *msg) : std::runtime_error(msg), code(err) {}
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Exception(int err, const std::string& msg) : std::runtime_error(msg), code(err) {}
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const int code = OK;
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};
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class DatabaseImpl;
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class Statement;
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class StatementImpl;
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class Database {
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private:
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Database(const Database &) = delete;
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Database &operator=(const Database &) = delete;
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public:
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Database(const std::string &filename, int flags = 0);
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Database(Database &&);
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~Database();
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Database &operator=(Database &&);
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explicit operator bool() const;
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void setBusyTimeout(std::chrono::milliseconds);
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void exec(const std::string &sql);
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Statement prepare(const char *query);
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private:
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std::unique_ptr<DatabaseImpl> impl;
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friend class Statement;
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};
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class Statement {
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private:
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Statement(const Statement &) = delete;
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Statement &operator=(const Statement &) = delete;
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public:
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Statement(Database *db, const char *sql);
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Statement(Statement &&);
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~Statement();
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Statement &operator=(Statement &&);
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explicit operator bool() const;
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template <typename T> void bind(int offset, T value);
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// Text
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void bind(int offset, const char *, std::size_t length, bool retain = true);
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void bind(int offset, const std::string&, bool retain = true);
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// Blob
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void bindBlob(int offset, const void *, std::size_t length, bool retain = true);
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void bindBlob(int offset, const std::vector<uint8_t>&, bool retain = true);
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template <typename T> T get(int offset);
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bool run();
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void reset();
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void clearBindings();
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int64_t lastInsertRowId() const;
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uint64_t changes() const;
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private:
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std::unique_ptr<StatementImpl> impl;
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};
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class Transaction {
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private:
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Transaction(const Transaction&) = delete;
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Transaction(Transaction&&) = delete;
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Transaction& operator=(const Transaction&) = delete;
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public:
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enum Mode {
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Deferred,
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Immediate,
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Exclusive
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};
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Transaction(Database&, Mode = Deferred);
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~Transaction();
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void commit();
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void rollback();
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private:
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Database& db;
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bool needRollback = true;
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};
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}
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}
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