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https://issues.apache.org/jira/browse/JCR-1892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662388#action_12662388
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Jukka Zitting commented on JCR-1892:
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> Sure, what about "The string is normally about 50 characters long."
Or: "The returned string contains only ASCII letters and digits and is at most
128 characters long." Both limitations are generic enough for most identifier
formats (even a hex representation of a huge 512-bit hash), and they allow
client applications to easily (no quoting) and efficiently (bounded size) use
the returned strings.
> What about getRecordIfStored()?
I think the current getRecord() is fine. If you already have a DataIdentifier
for something, then it's highly likely that the corresponding record also
exists in the DataStore, and an exception would truly be exceptional.
> Unique ID for org.apache.jackrabbit.value.BinaryValue
> -----------------------------------------------------
>
> Key: JCR-1892
> URL: https://issues.apache.org/jira/browse/JCR-1892
> Project: Jackrabbit
> Issue Type: New Feature
> Components: jackrabbit-jcr-commons
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Attachments: JackrabbitValue-api.patch, JackrabbitValue-core.patch
>
>
> BinaryValue should have a method get the unique identifier (if one is
> available). That way an application may not have to read the stream if that
> value is already processed.
> When the DataStore is used, a unique identifier is available, so probably
> this feature is quite simple to implement.
> See also http://www.nabble.com/Workspace.copy()-Question-...-td20435164.html
> (but please don't reply to this thread from now on - instead add comments to
> this issue).
> Another feature is getFileName() to get the file name if it is stored in the
> file system. This method may need a security mechanism, for example
> getFileName(Session s) so that the system can check it. In any case the file
> should not be modified, but maybe knowing the file name is already too
> dangerous in some cases.
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