[JCR-1607] Add a NamespaceHelper in jcr-commons

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.5
• Component/s: jackrabbit-core, jackrabbit-jcr-commons, jackrabbit-jcr-server, namespace
• Assignee: Jukka Zitting
• Reporter: Jukka Zitting
• Created: 16/May/08 09:15
• Updated: 08/Dec/08 11:09
• Resolved: 16/May/08 12:44

Description

We have a number of code snippets in jackrabbit-core and many JCR clients that do something like the following:

• get the prefix/URI for a given namespace URI/prefix without throwing an exception if the namespace is not found (return null instead)
• get a Map containing all current namespace prefix->URI mappings
• get the prefixed name for a given URI + local name pair in a given session (without a dependency to the SPI)
• safely register a given namespace (don't throw if the namespace is already registered, automatically select an unused prefix if needed, etc.)

I'd like to introduce a NamespaceHelper class in jcr-commons to cover such common code.