/sqlite3cc

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  • Committer: edam
  • Date: 2011-12-05 19:44:14 UTC
  • Revision ID: edam@waxworlds.org-20111205194414-mj9yzdnf8h5kzhmp
updaed TODO, fixed a comment

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src/command.cc
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 */
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#include <sqlite3cc/command.h>
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#include <sqlite3cc/database.h>
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#include <boost/thread/locks.hpp>
 
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#include <sqlite3cc/connection.h>
 
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#include <sqlite3cc/manipulator.h>
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#include <cassert>
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boost::recursive_mutex sqlite::command::_command_mutex;
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sqlite::command::command(
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        database &database,
 
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        connection &connection,
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        const std::string &sql )
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        :
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        basic_statement( database, sql ),
 
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        detail::basic_statement( connection, sql ),
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        _changes( 0 ),
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        _total_changes( 0 ),
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        _last_insert_rowid( 0 )
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sqlite::command::command(
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        database &database )
 
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        connection &connection )
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        :
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        basic_statement( database ),
 
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        detail::basic_statement( connection ),
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        _changes( 0 ),
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        _total_changes( 0 ),
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        _last_insert_rowid( 0 )
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int sqlite::command::prepare(
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        const std::string &sql )
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{
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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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        int code = detail::basic_statement::prepare( sql );
 
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        assert( code != SQLITE_OK || sqlite3_column_count( _handle ) == 0 );
 
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        return code;
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}
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int sqlite::command::step()
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{
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        boost::lock_guard< boost::recursive_mutex > lock( _command_mutex );
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        int error_code = basic_statement::step();
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        if( error_code == SQLITE_OK ) {
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                _changes = sqlite3_changes( _database._handle );
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                _total_changes = sqlite3_total_changes( _database._handle );
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                _last_insert_rowid = sqlite3_last_insert_rowid( _database._handle );
 
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        connection::mutex_guard lock( _connection );
 
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        int code = detail::basic_statement::step();
 
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        if( code == SQLITE_ROW ) throw sqlite_error( "command has results" );
 
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        if( code != SQLITE_DONE ) throw sqlite_error( _connection, code );
 
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        _changes = sqlite3_changes( _connection._handle );
 
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        _total_changes = sqlite3_total_changes( _connection._handle );
 
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        _last_insert_rowid = sqlite3_last_insert_rowid( _connection._handle );
 
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        lock.leave();
 
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        // finalise now (which shouldn't matter for commands), so that there are no
 
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        // active statements if we come to begin, commit or rollback a transaction
 
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        finalize();
 
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        return code;
 
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}
 
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template< >
 
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sqlite::detail::basic_statement &sqlite::detail::basic_statement::operator <<
 
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        < sqlite::detail::exec_t >(
 
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        const sqlite::detail::exec_t & )
 
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{
 
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        sqlite::command &that = dynamic_cast< sqlite::command & >( *this );
 
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        int code = that.step();
 
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        if( code != SQLITE_DONE ) {
 
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                if( code == SQLITE_ROW )
 
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                        throw sqlite_error( "statement returned results" );
 
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                else
 
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                        throw sqlite_error( _connection, code );
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        }
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        return error_code;
 
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        return *this;
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}
 
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