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added wrapper for sqlite3_create_function_v2

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AlexZ 2014-02-06 09:53:08 -06:00
parent bac9020ba0
commit de04b3c2e8
2 changed files with 62 additions and 0 deletions
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18
src/Database.cpp
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@ -14,6 +14,9 @@
#include "Assertion.h"
#include "Exception.h"
#ifndef SQLITE_DETERMINISTIC
#define SQLITE_DETERMINISTIC 0x800
#endif //SQLITE_DETERMINISTIC
namespace SQLite
{
@ -96,6 +99,21 @@ void Database::check(const int aRet) const // throw(SQLite::Exception)
throw SQLite::Exception(sqlite3_errmsg(mpSQLite));
}
}
// Attach a custom function to your sqlite database.
// assumes UTF8 text representation.
// Parameter details can be found here: http://www.sqlite.org/c3ref/create_function.html
void Database::createFunction(const char *funcName, int nArg, bool deterministic, void *pApp, void (*xFunc)(sqlite3_context *, int, sqlite3_value **), void (*xStep)(sqlite3_context *, int, sqlite3_value **), void (*xFinal)(sqlite3_context *), void (*xDestroy)(void *))
{
int eTextRep = SQLITE_UTF8;
// optimization if deterministic function... e.g. of non deterministic function (random())
if (deterministic) {
eTextRep = eTextRep|SQLITE_DETERMINISTIC;
}
int ret = sqlite3_create_function_v2(mpSQLite, funcName, nArg, eTextRep, pApp, xFunc, xStep, xFinal, xDestroy);
check(ret);
}
} // namespace SQLite

44
src/Database.h
View File

@ -229,6 +229,50 @@ public:
{
return sqlite3_errmsg(mpSQLite);
}
/**
* @brief Create a function in the sqlite database.
*
* This is the equivalent of the sqlite3_create_function_v2 command.
* NOTE: UTF-8 text encoding assumed.
*
*
* @param[in] funcName Name of the SQL function to be created or redefined
* @param[in] nArg Number of arguments in the function
* @param[in] determininistic optimize for deterministic functions. Most sqlite functions are deterministic.
* a random number generator is an example of an indeterministic function.
* @param[in] pApp See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xFunc See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xStep See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xFinal See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xDestroy See: http://www.sqlite.org/c3ref/create_function.html
*
* @throw SQLite::Exception in case of error
*/
void createFunction(const char *funcName, int nArg, bool deterministic, void *pApp, void (*xFunc)(sqlite3_context *, int, sqlite3_value **), void (*xStep)(sqlite3_context *, int, sqlite3_value **), void (*xFinal)(sqlite3_context *), void (*xDestroy)(void *));
/**
* @brief Create a function in the sqlite database.
*
* This is the equivalent of the sqlite3_create_function_v2 command.
* NOTE: UTF-8 text encoding assumed.
*
*
* @param[in] funcName Name of the SQL function to be created or redefined
* @param[in] nArg Number of arguments in the function
* @param[in] determininistic optimize for deterministic functions. Most sqlite functions are deterministic.
* a random number generator is an example of an indeterministic function.
* @param[in] pApp See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xFunc See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xStep See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xFinal See: http://www.sqlite.org/c3ref/create_function.html
* @param[in] xDestroy See: http://www.sqlite.org/c3ref/create_function.html
*
* @throw SQLite::Exception in case of error
*/
inline void createFunction(const std::string &funcName, int nArg, bool deterministic, void *pApp, void (*xFunc)(sqlite3_context *, int, sqlite3_value **), void (*xStep)(sqlite3_context *, int, sqlite3_value **), void (*xFinal)(sqlite3_context *), void (*xDestroy)(void *))
{
return createFunction(funcName.c_str(), nArg, deterministic, pApp, xFunc, xStep, xFinal, xDestroy);
}
private:
/// @{ Database must be non-copyable