<?xml version="1.0" encoding="UTF-8"?>
<!--
###############################################################################
#
# Copyright (C) 2017 Tom Kralidis (tomkralidis@gmail.com)
# Copyright (C) 2017 Angelos Tzotsos (gcpp.kalxas@gmail.com)
#
# This source is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# This code is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
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# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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###############################################################################
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:rm="http://qgis.org/base-metadata/1.0" targetNamespace="http://qgis.org/base-metadata/1.0" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0">
<xs:element name="BaseMetadata" type="rm:BaseMetadataType">
<xs:annotation>
<xs:appinfo>QGIS Base Metadata Schema</xs:appinfo>
<xs:documentation>Copyright (C) 2017 Tom Kralidis (tomkralidis@gmail.com)</xs:documentation>
<xs:documentation>Copyright (C) 2017 Angelos Tzotsos (gcpp.kalxas@gmail.com)</xs:documentation>
</xs:annotation>
</xs:element>
<xs:complexType name="BaseMetadataType">
<xs:sequence>
<xs:element name="identifier" type="xs:string">
<xs:annotation>
<xs:documentation>Reference, URI, URL or some other mechanism to identify a given resource. </xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="parentidentifier" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Reference, URI, URL or some other mechanism that that a given resource is a part of (child).</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="language" type="xs:string">
<xs:annotation>
<xs:documentation>Human language associated with a given resource. While a formal vocabulary is not imposed, it is advised to use ISO 3166/ISO 639.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="type" type="xs:string">
<xs:annotation>
<xs:documentation>Nature of a given resource. While a formal vocabulary is not imposed, it is advised to use the ISO 19115 MD_ScopeCode.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="title" type="xs:string">
<xs:annotation>
<xs:documentation>Human readable name of a given resource typically displayed in search results.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="abstract" type="xs:string">
<xs:annotation>
<xs:documentation>Description of a given resource.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="keywords" type="rm:keywordsType" minOccurs="0" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Set of descriptive keywords associated with a given resource.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="contact" type="rm:contactType" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Contact person/entity associated with a given resource.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="links" type="rm:linksType">
<xs:annotation>
<xs:documentation>Set of online resources associated with a given resource.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="history" type="xs:string" minOccurs="0" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Freeform description of the history or lineage of the resource.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:attribute name="version" use="required" fixed="1.0">
<xs:annotation>
<xs:documentation>Version of QGIS Base Metadata schema used. </xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:complexType>
<xs:complexType name="keywordsType">
<xs:sequence>
<xs:element name="keyword" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Descriptive keyword associated with a resource. While a formal vocabulary is not imposed, it is advised to use rm:keywords/@vocabulary to identify a codelist or applicable vocabulary.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
<xs:attribute name="vocabulary" type="xs:string">
<xs:annotation>
<xs:documentation>Reference (URI/URL preferred) to a codelist or vocabulary associated with keyword list.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:complexType>
<xs:complexType name="contactType">
<xs:sequence>
<xs:element name="name" type="xs:string">
<xs:annotation>
<xs:documentation>Name of contact.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="organization" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Organization contact belongs to/represents.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="position" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Position/title of contact.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="contactAddress" type="rm:addressType" minOccurs="0" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Address associated with a given contact.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="voice" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Voice telephone.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="fax" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Facsimile telephone.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="email" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Electronic mail address (note, do not include mailto: protocol as part of the email address).</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="role" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Role of contact. While no vocabulary is imposed, it is advised to use ISO 19115 CI_RoleCode.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="addressType">
<xs:sequence>
<xs:element name="type" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Type of address (e.g. 'postal').</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="address" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Physical address.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="city" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>City.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="administrativearea" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Administrative area (state, province/territory, etc.).</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="postalcode" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Postal code.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="country" type="xs:string" minOccurs="0">
<xs:annotation>
<xs:documentation>Country.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="linksType">
<xs:sequence>
<xs:element name="link" type="rm:linkType" maxOccurs="unbounded">
<xs:annotation>
<xs:documentation>Online resource associated with a given resource. Attribute definitions:
* name: short name (like WMS layer name)
* type: link type. Strongly suggested to use values from the 'identifier' column in https://github.com/OSGeo/Cat-Interop/blob/master/LinkPropertyLookupTable.csv
* description: abstract text about link
* url: endpoint. If the URL is an OWS server, specify the *base* URL only without parameters like service=xxx.....
* format: format specification of online resource. Strongly suggested to use GDAL/OGR format values
* mimeType: MIME type representative of the online resource response (image/png, application/json, etc.)
* size: estimated size (in bytes) of the online resource response
</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:complexType name="linkType">
<xs:attributeGroup ref="rm:linkAttrs"/>
</xs:complexType>
<xs:attributeGroup name="linkAttrs">
<xs:attribute name="name" type="xs:string" use="required"/>
<xs:attribute name="type" type="xs:string" use="required"/>
<xs:attribute name="url" type="xs:anyURI" use="required"/>
<xs:attribute name="description" type="xs:string" use="optional"/>
<xs:attribute name="format" type="xs:string" use="optional"/>
<xs:attribute name="mimeType" type="xs:string" use="optional"/>
<xs:attribute name="size" type="xs:string" use="optional"/>
</xs:attributeGroup>
</xs:schema>