String currentKeyExpression = getKeyExpression( ).trim( );
String currentKeyExpression = keyChooser.getText( );
	private void resetInterval( )	{		String currentKeyExpression = getKeyExpression( ).trim( );		if ( previoiusKeyExpression.equals( currentKeyExpression ) )			return;		if ( ExpressionUtility.isColumnExpression( currentKeyExpression ) )			intervalChoices = getSubIntervalChoice( );		else			intervalChoices = intervalChoicesAll;		resetIntervalType( intervalChoices );		previoiusKeyExpression = currentKeyExpression;	}