From dfee01d754a37fbb6d541f68e9a0924b523f58ff Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Tue, 29 Nov 2022 08:11:12 +1000
Subject: [PATCH] Use enumeration in xsd

---
 resources/qgis-base-metadata.xsd | 53 ++++++++++++++++++++++++--------
 1 file changed, 41 insertions(+), 12 deletions(-)

diff --git a/resources/qgis-base-metadata.xsd b/resources/qgis-base-metadata.xsd
index 47e2e05feac..3d7839741fe 100644
--- a/resources/qgis-base-metadata.xsd
+++ b/resources/qgis-base-metadata.xsd
@@ -107,22 +107,51 @@
 			</xs:annotation>
 		</xs:attribute>
 	</xs:complexType>
+	<xs:simpleType name="dateDescriptor" final="restriction">
+		<xs:restriction base="xs:string">
+			<xs:enumeration value="Created">
+				<xs:annotation>
+					<xs:documentation>Date resource was created.</xs:documentation>
+				</xs:annotation>
+			</xs:enumeration>
+			<xs:enumeration value="Published">
+				<xs:annotation>
+					<xs:documentation>Date resource was first published.</xs:documentation>
+				</xs:annotation>
+			</xs:enumeration>
+			<xs:enumeration value="Revised">
+				<xs:annotation>
+					<xs:documentation>Date resource was most recently revised.</xs:documentation>
+				</xs:annotation>
+			</xs:enumeration>
+			<xs:enumeration value="Superseded">
+				<xs:annotation>
+					<xs:documentation>Date resource was superseded.</xs:documentation>
+				</xs:annotation>
+			</xs:enumeration>
+		</xs:restriction>
+	</xs:simpleType>
+	<xs:attributeGroup name="dateAttrs">
+		<xs:attribute name="type" type="rm:dateDescriptor" use="required">
+			<xs:annotation>
+				<xs:documentation>Date type.</xs:documentation>
+			</xs:annotation>
+		</xs:attribute>
+		<xs:attribute name="value" type="xs:dateTime" use="required">
+			<xs:annotation>
+				<xs:documentation>Associated datetime value.</xs:documentation>
+			</xs:annotation>
+		</xs:attribute>
+	</xs:attributeGroup>
+	<xs:complexType name="dateType">
+		<xs:attributeGroup ref="rm:dateAttrs"/>
+	</xs:complexType>
 	<xs:complexType name="datesType">
 		<xs:sequence>
-			<xs:element name="date" maxOccurs="unbounded">
+			<xs:element name="date" maxOccurs="unbounded" type="rm:dateType">
 				<xs:annotation>
-					<xs:documentation>A dates associated with a resource.</xs:documentation>
+					<xs:documentation>A date associated with a resource.</xs:documentation>
 				</xs:annotation>
-				<xs:attribute name="type" type="xs:string">
-					<xs:annotation>
-						<xs:documentation>Date type, valid values are Created, Published, Revised, Superseded.</xs:documentation>
-					</xs:annotation>
-				</xs:attribute>
-				<xs:attribute name="value" type="xs:dateTime">
-					<xs:annotation>
-						<xs:documentation>Associated datetime value.</xs:documentation>
-					</xs:annotation>
-				</xs:attribute>
 			</xs:element>
 		</xs:sequence>
 	</xs:complexType>