# echo-metadata
#
# This file is part of the ECHO Schema, version 1.0. See the main file "echo.rnc".


namespace dcterms = "http://purl.org/dc/terms"
namespace xsi     = "http://www.w3.org/2001/XMLSchema-instance"
namespace xlink   = "http://www.w3.org/1999/xlink"

echo.metadata = element metadata { empty, echo.metadata.content }
echo.metadata.content = dcterms.identifier 
                      & dcterms.bibliogr 
                      & dcterms.licensing 
                      & echo.meta

# echo.metadata.content <-- dcterms:spatial, dcterms:temporal (in echo-gis)


dcterms.bibliogr  = dcterms.title+ & dcterms.alternative* 
                  & dcterms.creator+ & dcterms.contributor* & dcterms.publisher* 
                  & dcterms.language+ & dcterms.date? 
                  & dcterms.description*
dcterms.licensing = dcterms.rights* & dcterms.license* & dcterms.accessRights? 
                  & dcterms.rightsHolder+ & dcterms.provenance*
                  & dcterms.dateCopyrighted?
echo.meta         = echo.font? & echo.font-family? & echo.stylesheet* 
                  & echo.echolink? & echo.echodir? & echo.gis-table?
                  & echo.time-period? & echo.parameters? & echo.display-parameters? 
                  & echo.log?


dcterms.identifier      = element dcterms:identifier { echo.identifier } 

dcterms.title           = element dcterms:title { echo.language.attrib, text }
dcterms.alternative     = element dcterms:alternative { echo.language.attrib, text }
dcterms.creator         = element dcterms:creator { echo.authorityfile?, echo.role?, text }
dcterms.contributor     = element dcterms:contributor { echo.authorityfile?, echo.role?, text }
dcterms.publisher       = element dcterms:publisher { text }
dcterms.language        = element dcterms:language { dcterms.languageFormat }
dcterms.date            = element dcterms:date { dcterms.dateFormat }
dcterms.description     = element dcterms:description { text }

dcterms.rights          = element dcterms:rights { text }
dcterms.license         = element dcterms:license { echo.license }
dcterms.accessRights    = element dcterms:accessRights { echo.accessRights }
dcterms.rightsHolder    = element dcterms:rightsHolder { dcterms.rightsHolderFormat }
dcterms.provenance      = element dcterms:provenance { text }
dcterms.dateCopyrighted = element dcterms:dateCopyrighted { dcterms.dateFormat }

echo.font               = element font { text }
echo.font-family        = element font-family { echo.font-families }
echo.stylesheet         = element stylesheet { echo.URI.datatype }
echo.echolink           = element echolink { echo.URI.datatype }
echo.echodir            = element echodir { text }
echo.gis-table          = element gis-table { text }

echo.time-period        = element time-period { text }
echo.parameters         = element parameters { text }
echo.display-parameters = element display-parameters { text }
echo.log                = element log { text }


dcterms.languageFormat = attribute xsi:type { "dcterms:ISO639-3" | "ISO639-5" }, text
dcterms.dateFormat     = attribute xsi:type { "dcterms:W3CDTF" }, text

dcterms.rightsHolderFormat = attribute xlink:href {text}, text

echo.identifier    = text
echo.authorityfile = attribute identifier { text }
echo.role     = attribute role { text }
echo.license       = attribute xlink:href {text}, text
echo.accessRights  = "free" | "restricted"
echo.font-families = "serif" | "sans-serif" | "monospace"

# echo.font-families <-- "song style" (in echo-chinese-text)