# Schema to model products in the Bloomsbury XML CMS.
#
# A product is defined as one or more content items to be  
# published for sale or other distribution.
#
# Each item of content is represented by an <item>, whose
# id attribute is the unique identifier used by the CMS for
# that item.
#
# Similar items are grouped using <content>. 
# The source and target content types express respectively: 
# - the "true" content type (i.e. as mastered and managed); and 
# - the content type specific to the product. 
# The latter need not be given: if it is absent, the target 
# content type should be assumed to be the same as the source 
# content type.
#
# product/(@name,@description) are machine- and human-readable
# labels for the product, respectively.
#
# content/@label is an optional, product-specific label for the
# group of items.
#
# content/@pipelineRef refers to the ID of a pipeline to be
# used to process the content on publication from the system.
#
# product/@pipelineRef is provided for the same purpose, but for
# all content included in the product.
#
# Author: Andrew Sales <andrew.sales@bloomsbury.com>
# Date: 20170629
# Version: 0.1
# Comments: 

default namespace = "http://cms.bloomsbury.com/product-manifest"

start =
  element product {
    attribute id { xsd:ID },
    attribute name { xsd:NCName },
    attribute who { text }?,    #creator/last editor
    attribute when { xsd:dateTime }?,   #date of this version
    attribute description { text }?,
    attribute pipelineRef{ xsd:NCName }?,
    attribute taxonomyRef{ xsd:NCName },
    element content {
      source-content-type-att, 
      target-content-type-att?,
      attribute label { text }?,
      attribute pipelineRef{ xsd:NCName }?,
      element item {
        attribute from { xsd:date }?,
        attribute id { xsd:NCName },
        attribute to { xsd:date }?
      }+
    }+
  }
  
source-content-type-att =
attribute sourceContentType { source-content-types }

target-content-type-att =
attribute targetContentType { target-content-types }  
  
source-content-types = 
    string "archive" |
    string "article" |
    string "audio" |
    string "building" |
    string "drama" |
    string "exhibition" |
    string "image"  |
    string "looseleaf" |
    string "monograph" | 
    string "museumCollection" |
    string "museumExhibition" |
    string "organisation" |
    string "person"  |
    string "reference" | 
    string "timeline" |
    string "video"

target-content-types =
    source-content-types | 
    string "monographAsReference" |
    string "dictionary"