Bug 152443 Support boolean type in data set
Support boolean type in data set. It'll cause some data transform issue with absence of boolean type.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/odaconsumer/PreparedStatement.java
doGetMetaData();
		
		try
		{
		    boolean ret= false;
			if ( isAdvancedQuery() )
		        ret = getAdvancedStatement().execute();
			else 
			{
			    
			    
			    m_driverResultSet = m_statement.executeQuery( );
			    ret = true;
			}
			if( sm_logger.isLoggingEnterExitLevel() )
				sm_logger.exiting( sm_className, methodName, Boolean.valueOf( ret ) );
		    return ret;
		}
		catch( OdaException ex )
		{
			sm_logger.logp( Level.SEVERE, sm_className, methodName, 
							"Cannot execute statement.", ex );
			
			throw new DataException( ResourceConstants.CANNOT_EXECUTE_STATEMENT, ex );
		}
		catch( UnsupportedOperationException ex )
		{
			sm_logger.logp( Level.SEVERE, sm_className, methodName, 
							"Cannot execute statement.", ex );