[ http://issues.apache.org/jira/browse/IO-89?page=all ]
Niall Pemberton updated IO-89:
------------------------------
Fix Version/s: 1.4
(was: 1.3)
I've corrected the AgeFileFilter and SizeFileFilter javadocs.
Another solution would be to add two new equivalent (but without the
inconsistency) filters - LengthFileFilter (uses file.length() ) &
LastModifiedFileFilter (uses file.lastModified()) and deprecate SizeFileFilter
& AgeFileFilter.
Whatever the solution I'm not sure when/if I'll get round to this, so I've
punted the fix version to 1.4 for now.
> 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: 1.4
>
>
> 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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