> Just tossing out ideas
>
> class OwnerInformation {
> int getUserId();
> int getGroupId();
> String getUserName();
> String getGroupName();
> }
>
> class ArchiveEntry {
> OwnerInformation getOwner();
> }
>
> ZIP would return null on getOwner, AR and CPIO return null in the *Name
> methods.
That would make sense.
>> Right. What we could think of is to delegate the metadata by type.
>
>> entry.getUnixMetadata()
>
> POSIX rather than Unix.
True :-p
> I had a look at
> http://download.java.net/jdk7/docs/api/java/nio/file/attribute/PosixFileAttributes.html
> and somewhat like the approach of having a Set of permissions rather
> than a multitude of canOwnerRead() type of methods - even if we can't
> use generics or enums.
>
> class PosixAttributes {
> /* nine constants */
> static final int OWNER_CAN_READ = ...
>
> /* set of the constants that apply */
> Set getPermissions();
>
> /* could be mixed with permissions if we wanted to */
> Boolean isSetUserId();
> Boolean isSetGroupId();
> Boolean hasStickyBit();
>
> /* TAR, AR and CPIO know these as well */
> Boolean isSymbolicLink();
> Boolean isRegularFile();
>
> // redundant
> boolean isDirectory();
>
> // unlikely to appear in a real archive but TAR and CPIO support devices
> Boolean isSocket();
> Boolean isBlockDevice();
> Boolean isCharacterDevice();
> Boolean isFifo();
>
> /* convenience method that re-creates the numeric mode field from
> permissions, file flags and bits */
> int asMode();
>
> /* TAR and CPIO know these as well */
> Integer getDeviceMajorNumber();
> Integer getDeviceMinorNumber();
> }
Hm ...lots of stuff in there. But looks reasonable.
Should be all "boolean"s instead of some "Boolean"s thought, right?
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