Description Thorsten van Ellen 2006-07-28 18:28:31 EDT

Hi!

I had the following code:

	String sourceFileData =
		source.getAbsolutePath()+Constants.CSV_SEPARATOR
		+source.getName()+Constants.CSV_SEPARATOR
		+FileHelper.getExtension(source.getName())+CSV_SEPARATOR
		+""+source.length()+Constants.CSV_SEPARATOR;

source is a non-static member/attribute of the current class of type File.

I wanted to extract a method for all those String stuff. The result should look like this:

		String sourceFileData = getFileData(source);

But I got code like this:

		String sourceFileData = getFileData();

The difference is, that 
* the parameter was not passed and 
* the extracted method used the attribute instead
* the extracted method can not be static:

The extracted method looked like this:

	private String getFileData() {
		return source.getAbsolutePath()+Constants.CSV_SEPARATOR
		+source.getName()+Constants.CSV_SEPARATOR
		+FileHelper.getExtension(source.getName())+CSV_SEPARATOR
		+""+source.length()+Constants.CSV_SEPARATOR;
	}

But I wanted this:

	public static String getFileData(File file) {
		return file.getAbsolutePath()+Constants.CSV_SEPARATOR
		+file.getName()+Constants.CSV_SEPARATOR
		+FileHelper.getExtension(file.getName())+CSV_SEPARATOR
		+""+file.length()+Constants.CSV_SEPARATOR;
	}

Note the static modifier!

Would be nice, if "extract method" would offer a possibility
* to introduce by choice a parameter for each member that is within the extracted code and
* to make the extracted method static, which implies introducing parameters for all non-static members

best regards

Thorsten van Ellen