[Openxml4j-devs] Supporting "Hollow PackageParts"?

[Rainer S. <rs...@ad...>]

Hi,

I ran into a memory critical situation where one aspect of a solution is 
ability to get rid of the byte[] storage in MemoryPackagePart. Assuming 
I have a DOM like tree (XmlBeans) of an XML file, I don't really need 
the additional byte[] in MemoryPackagePart. XmlBeans allows to get an 
InputStream from an XML node. This can be returned by 
<PackagePart>.getInputStreamImpl() .

In my adjusted version I added a HollowMemoryPackagePart class and among 
other things added the method PackagePart.makeHollow(...) . The new 
class effectively requests the InputStream at save time and does not 
hold its own buffer. MemoryPackagePart is used as default, so unless 
makeHollow is called, it remains the same.

Would it make sense to add such a feature to openxml4j?
If yes, I would be glad to provide a patch.

Best wishes, Rainer
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