owc.rnc

# -*- rnc -*-
# RELAX NG Compact Syntax Grammar for OGC Context Atom Encoding
# ATOM encoding and OWC classes as defined in OGC 12-084 
#
# OGC Web Services Context Atom Encoding 1.0 is an OGC Standard.
# Copyright (c) 2014 Open Geospatial Consortium.
# To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .
#
# Version: 1.0.0
#

namespace owc = "http://www.opengis.net/owc/1.0"
namespace s = "http://purl.oclc.org/dsdl/schematron"
namespace dc="http://purl.org/dc/elements/1.1/" 
namespace georss="http://www.georss.org/georss" 
namespace atom = "http://www.w3.org/2005/Atom"

# Define date time interval
datetimeInterval= xsd:string { pattern ="\s*[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}(\.[0-9]+)?(Z|[\+\-][0-9]{2}:[0-9]{2})?(/[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}(\.[0-9]+)?(Z|[\+\-][0-9]{2}:[0-9]{2})|)\s*"}

# Redefine atom:feed to include new owc and dc elements
atomFeedConstruct &= owcDisplay? & element dc:publisher { text } ? 
    & element dc:date { datetimeInterval }? & georssWhere?
                  
# Redefine atom:entry to include new owc and dc elements
atomEntryConstruct &= owcOffering* & element dc:publisher { text }? 
    & element dc:date { datetimeInterval }? & georssWhere ?
    & element owc:minScaleDenominator { xsd:double }?
    & element owc:maxScaleDenominator { xsd:double }?

# owcContent attribute extensions
owcCommonAttributes = undefinedAttribute*

owcURL = xsd:string { pattern = "(ftp|http)s?://.*"}
	
# owcOffering 
owcOffering = element owc:offering { owcCommonAttributes, 
   attribute code { text },
   ( owcOperation* & owcContent* & owcStyleSet* & extensionElement*)}
   
# owcOperation 
owcOperation = element owc:operation { owcCommonAttributes, 
   attribute code { text }, attribute href { owcURL },
   attribute type { text }?, 
   ( attribute method { text } &  
   element owc:result{( owcContentConstruct )}? 
   & element owc:request {( owcContentConstruct )}? 
   & extensionElement* )
}
   
# owcContent 
owcContentConstruct = owcCommonAttributes &
   ( ( attribute type { text }, attribute href { owcURL }) |
     ( attribute type { text }, ( text | anyElement)* )  )

owcContent = element owc:content { owcContentConstruct } 

# owcStyleSet 
owcStyleSet = element owc:styleSet { owcCommonAttributes, 
   attribute default {  xsd:boolean } ?,
   (element owc:name { text } & element owc:title { text }
    &element owc:abstract { text }?
    &element owc:legendURL { attribute type { text },
    				attribute href { owcURL } }?
    &owcContent? & extensionElement*)}  

# owc:display  
owcDisplay = element owc:display {      
   (element owc:pixelWidth { xsd:integer }?
    & element owc:pixelHeight { xsd:integer }?
    & element owc:mmPerPixel { xsd:float }?)
    & extensionElement*
}   

# Define georss:where on georss/1.1
include "georss.rnc"

# Replacing definitions on RFC4287 atom/2005
include "atom_feed.rnc"{
   # Redefine the Simple Extension to exclude owc:* elements
   simpleExtensionElement = element * - 
       (atom:* | owc:* | dc:publisher | dc:date |  georss:where) { text }

   # Redefine the Structured Extension to exclude owc:* elements
   structuredExtensionElement = element * - 
       (atom:* | owc:* | dc:publisher | dc:date | georss:where) {
          (attribute * { text }+,(text|anyElement)*)
        | (attribute * { text }*, (text?, anyElement+, (text|anyElement)*))} 

   # Redefine Atom rules    
   atomFeed = [
   
   s:pattern [ name="check profile link" 
    s:rule [ context = "atom:feed"
      s:assert [ test = 
        "atom:link[@href='http://www.opengis.net/spec/owc-atom/1.0/req/core' and @rel='profile']"
        "An atom:feed must have an atom:link with the @rel attribute equal to 'profile' "
        ~ "and the OGC specification reference identified with the "
        ~ "  @href='http://www.opengis.net/spec/owc-atom/1.0/req/core' "]]]
    ]
    element atom:feed { atomFeedConstruct }     
    
 atomEntry =[
   s:pattern [ name="check entry content" 
    s:rule [ context = "atom:entry"
      s:assert [ test = "atom:content"
       "An atom:entry must have one atom:content MUST have content "
       ~ "element in a format understandable by generic Atom readers"
       ~ " ( @type equal to 'html' is recommended)"]]]

    ]
   element atom:entry { atomEntryConstruct } 
}
# EOF