open( database handle )

Open the SQL engine with a database handle.

For an overview see page McoSqlEngine

Prototype

 
    void open(mco_db_h db);
 

Arguments

db	The handle of an opened eXtremeDB database (returned from function mco_db_connect())

Description

This method opens an eXtremeDB SQL mapper and the McoSqlEngine instance with the database handle in argument db.

Returns

This method throws a RuntimeException in the case of an error.

Example

     
    const char * dbname = "SimpleDb";
     
    int main(int argc, char* argv[])
    {
        MCO_RET rc;
        sample_memory_t dbmem;
        McoSqlEngine engine;
         
        ...
        mco_runtime_start();
        rc = sample_open_database( db_name, SimpleDb_get_dictionary(), DATABASE_SIZE, CACHE_SIZE,
        MEMORY_PAGE_SIZE, PSTORAGE_PAGE_SIZE, 1, &dbmem );
        if ( MCO_S_OK == rc ) 
        {
            rc = mco_db_connect(db_name, &db);
            if ( MCO_S_OK == rc ) 
            {
                engine.open(db);
            
                ...
            }
        }
    }