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RSS FAQs - Atom Syndiation Format RFC4287 Reference Document

By: M. Nottingham, Ed. & R. Sayre, Ed.

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(Continued from previous part...)

          & atomLink*
          & atomLogo?
          & atomRights?
          & atomSubtitle?
          & atomTitle
          & atomUpdated
          & extensionElement*),
         atomEntry*
      }

   # atom:entry

   atomEntry =
      [
         s:rule [
            context = "atom:entry"
            s:assert [
               test = "atom:link[@rel='alternate'] "
               ~ "or atom:link[not(@rel)] "
               ~ "or atom:content"
               "An atom:entry must have at least one atom:link element "
               ~ "with a rel attribute of 'alternate' "
               ~ "or an atom:content."
            ]
         ]
         s:rule [
            context = "atom:entry"
            s:assert [
               test = "atom:author or "
               ~ "../atom:author or atom:source/atom:author"
               "An atom:entry must have an atom:author "
               ~ "if its feed does not."
            ]
         ]
      ]
      element atom:entry {
         atomCommonAttributes,
         (atomAuthor*
          & atomCategory*
          & atomContent?
          & atomContributor*
          & atomId
          & atomLink*
          & atomPublished?
          & atomRights?
          & atomSource?
          & atomSummary?
          & atomTitle

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          & atomUpdated
          & extensionElement*)
      }

   # atom:content

   atomInlineTextContent =
      element atom:content {
         atomCommonAttributes,
         attribute type { "text" | "html" }?,
         (text)*
      }

   atomInlineXHTMLContent =
      element atom:content {
         atomCommonAttributes,
         attribute type { "xhtml" },
         xhtmlDiv
      }

   atomInlineOtherContent =
      element atom:content {
         atomCommonAttributes,
         attribute type { atomMediaType }?,
         (text|anyElement)*
      }

   atomOutOfLineContent =
      element atom:content {
         atomCommonAttributes,
         attribute type { atomMediaType }?,
         attribute src { atomUri },
         empty
      }

   atomContent = atomInlineTextContent
    | atomInlineXHTMLContent
    | atomInlineOtherContent
    | atomOutOfLineContent

   # atom:author

   atomAuthor = element atom:author { atomPersonConstruct }

   # atom:category

   atomCategory =
      element atom:category {

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