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Posted to dev@commons.apache.org by "Niall Pemberton (JIRA)" <ji...@apache.org> on 2006/10/08 11:19:20 UTC
[jira] Commented: (IO-89) Inconsistency in SizeFileFilter and
AgeFileFilter implementations
[ http://issues.apache.org/jira/browse/IO-89?page=comments#action_12440743 ]
Niall Pemberton commented on IO-89:
-----------------------------------
OK forget the last thing I said - back to my original suggestion - I understand your compatibility issues but I think this is a bug for the following reasons and so should be fixed:
1) It doesn't do what it says it does in the javadocs
2) The larger/smaller and older/newer are inconsistent.
> Inconsistency in SizeFileFilter and AgeFileFilter implementations
> -----------------------------------------------------------------
>
> Key: IO-89
> URL: http://issues.apache.org/jira/browse/IO-89
> Project: Commons IO
> Issue Type: Bug
> Components: Filters
> Affects Versions: 1.2
> Reporter: Niall Pemberton
> Priority: Minor
> Fix For: 1.3
>
>
> Theres an inconsistency (bug?) in the implementation of SizeFileFilter and AgeFileFilter.
> In SizeFileFilter, using an "acceptLarger" parameter of true actually accepts files with a size equal to and larger, whereas
> specifying an "acceptLarger" parameter of false only accepts smaller files.
> The same is true for AgeFileFilter, using an "acceptOlder" parameter of true actually accepts files either the same age or older, whereas
> specifying an "acceptOlder" parameter of false only accepts newer files.
> A big benefit of resolving these inconsistencies would mean that creating filters for any condition (i.e. <, >, <=, >= or =) becomes
> alot easier. For example if the AgeFileFilter did only do either newer or older, then creating a filters for "the same age or older"
> or "the same age or younger" could be done in the following way:
> IOFileFilter equalOlder = new NotFileFilter(new AgeFileFilter(cutoff, false));
> IOFileFilter equalYounger = new NotFileFilter(new AgeFileFilter(cutoff, true));
> For SizeFileFilter I propose changing the logic to the following:
> if (acceptLarger) {
> return file.length() >= size;
> } else {
> return file.length() <= size;
> }
> (This would mean that "new SizeFileFilter(cutoff)" would operate the same way)
> I have added isOlderFile() methods to FileUtils and propose that AgeFileFilter is changed to the following:
> if (acceptOlder) {
> return FileUtils.isFileOlder(file, cutoff);
> } else {
> return FileUtils.isFileNewer(file, cutoff);
> }
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