Editing API:EPrints/Apache/CRUD (section)

===Updating complex objects using PUT===
Eprint objects contain zero or more documents, which each contain zero or  more files. When you update (<tt>PUT</tt>) an eprint object the contained documents  will only be replaced if the Import plugin defines new documents e.g. the  Atom Import plugin will never define new documents so <tt>PUT</tt>ing Atom content  will only update the eprint's metadata. <tt>PUT</tt>ing  {{API:PodLink|file=EPrints/Plugin/Export/XML|package_name=EPrints::Plugin::Export::XML|section=|text=EP3 XML}} will replace the documents if you  include a <tt>&lt;documents</tt>&gt; XML element.

<tt>PUT</tt>ing to <tt>/contents</tt> will always replace all contents - <tt>PUT</tt>ing to  <tt>/eprint/23/contents</tt> is equivalent to <tt>DELETE /eprint/23/contents</tt> then  <tt>POST /eprint/23/contents</tt>.

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