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* Some wrapper objects to ensure that SQLite objects are properly

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destroyed.
This commit is contained in:
Eelco Dolstra 2010-02-18 14:30:42 +00:00
parent a053d2d8e5
commit e0305bb7a8
2 changed files with 109 additions and 49 deletions
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40
src/libstore/local-store.hh
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@ -6,7 +6,9 @@
#include "store-api.hh"
#include "util.hh"
#include <sqlite3.h>
class sqlite3;
class sqlite3_stmt;
namespace nix {
@ -14,8 +16,9 @@ namespace nix {
/* Nix store and database schema version. Version 1 (or 0) was Nix <=
0.7. Version 2 was Nix 0.8 and 0.9. Version 3 is Nix 0.10.
Version 4 is Nix 0.11. Version 5 is Nix 0.12*/
const int nixSchemaVersion = 5;
Version 4 is Nix 0.11. Version 5 is Nix 0.12-0.14. Version 6 is
Nix 0.15. */
const int nixSchemaVersion = 6;
extern string drvsLogDir;
@ -43,6 +46,28 @@ struct RunningSubstituter
};
/* Wrapper object to close the SQLite database automatically. */
struct SQLite
{
sqlite3 * db;
SQLite() { db = 0; }
~SQLite();
operator sqlite3 * () { return db; }
};
/* Wrapper object to create and destroy SQLite prepared statements. */
struct SQLiteStmt
{
sqlite3 * db;
sqlite3_stmt * stmt;
SQLiteStmt() { stmt = 0; }
void create(sqlite3 * db, const string & s);
~SQLiteStmt();
operator sqlite3_stmt * () { return stmt; }
};
class LocalStore : public StoreAPI
{
private:
@ -163,12 +188,19 @@ private:
/* Whether to do an fsync() after writing Nix metadata. */
bool doFsync;
sqlite3 * db;
/* The SQLite database object. */
SQLite db;
/* Some precompiled SQLite statements. */
SQLiteStmt stmtRegisterValidPath;
SQLiteStmt stmtAddReference;
int getSchema();
void initSchema();
void prepareStatements();
void registerValidPath(const ValidPathInfo & info, bool ignoreValidity = false);
ValidPathInfo queryPathInfo(const Path & path, bool ignoreErrors = false);