/sqlite3cc

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  • Committer: edam
  • Date: 2010-07-27 15:12:55 UTC
  • Revision ID: edam@waxworlds.org-20100727151255-goaqgdz4kj13q7gz
- update TODO
- added some missing includes for <string>
- changed usage of database::exec() to not require return code!
- prevented transaction_guard destructor from throwing an exception

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Lines of Context:
src/query.cc
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        database &database,
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        const std::string &sql )
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        :
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        basic_statement( database, sql )
 
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        basic_statement( database, sql ),
 
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        _next_row( 0 )
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{
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        assert( sqlite3_column_count( _handle ) > 0 );
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}
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sqlite::query::query(
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        database &database )
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        :
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        basic_statement( database )
 
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        basic_statement( database ),
 
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        _next_row( 0 )
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{
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}
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int sqlite::query::prepare(
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        const std::string &sql )
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{
 
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        _next_row = 0;
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        int error_code = basic_statement::prepare( sql );
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        assert( error_code != SQLITE_OK || sqlite3_column_count( _handle ) > 0 );
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        return error_code;
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sqlite::row sqlite::query::step()
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{
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        int error_code = basic_statement::step();
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        if( error_code == SQLITE_ROW )
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                return row( *this );
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        if( error_code == SQLITE_DONE )
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                return row( *this, false );
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        throw sqlite_error( error_code );
 
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//      sqlite3_mutex_enter( sqlite3_db_mutex( _database ) );
 
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//      try {
 
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                int error_code = basic_statement::step();
 
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                if( error_code == SQLITE_ROW ) {
 
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//                      sqlite3_mutex_leave( sqlite3_db_mutex( _database ) );
 
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                        return row( _handle, _next_row++ );
 
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                }
 
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                if( error_code == SQLITE_DONE ) {
 
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//                      sqlite3_mutex_leave( sqlite3_db_mutex( _database ) );
 
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                        return row();
 
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                }
 
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                throw sqlite_error( error_code );
 
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//      }
 
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//      catch( ... ) {
 
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//              sqlite3_mutex_leave( sqlite3_db_mutex( _database ) );
 
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//              throw;
 
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//      }
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}
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{
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        return sqlite3_column_count( _handle );
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}
 
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const std::string sqlite::query::column_name(
 
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        unsigned int index )
 
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{
 
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        assert( index <
 
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                static_cast< unsigned int >( sqlite3_column_count( _handle ) ) );
 
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        return sqlite3_column_name( _handle, index );
 
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}
 
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sqlite::query::iterator::iterator(
 
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        sqlite::query &query,
 
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        bool valid )
 
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        :
 
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        _query( query )
 
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{
 
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        if( valid )
 
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                increment();
 
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        else
 
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                _valid = false;
 
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}
 
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sqlite::row sqlite::query::iterator::dereference() const
 
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{
 
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        return sqlite::row( _query._handle, _query._next_row++ );
 
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}
 
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void sqlite::query::iterator::increment()
 
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{
 
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        _valid = _query.step();
 
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}
 
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bool sqlite::query::iterator::equal(
 
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        sqlite::query::iterator const &other )
 
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        const
 
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{
 
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        return _valid == other._valid;
 
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}
 
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sqlite::query::iterator sqlite::query::begin()
 
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{
 
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        return sqlite::query::iterator( *this, true );
 
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}
 
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sqlite::query::iterator sqlite::query::end()
 
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{
 
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        return sqlite::query::iterator( *this, false );
 
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}