<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://namespace.openaire.eu/oaf"
	targetNamespace="http://namespace.openaire.eu/oaf" elementFormDefault="qualified">

	<xs:annotation>
		<xs:documentation>This schema describes elements and properties of OpenAIRE project entity: https://issue.openaire.research-infrastructures.eu/projects/openaire2020-wiki/wiki/Core_entity_project</xs:documentation>
	</xs:annotation>

	<xs:include schemaLocation="oaf-common-1.0.xsd"/>

	<xs:element name="project">
		<xs:complexType>
			<xs:choice maxOccurs="unbounded">
				<xs:element name="code" type="xs:string">
					<xs:annotation>
						<xs:documentation>Project code as assigned by the project's funder.</xs:documentation>
					</xs:annotation>
				</xs:element>
				<xs:element name="title" type="xs:string"/>
				<xs:element name="acronym" type="xs:string"/>
				<xs:element name="callidentifier" type="xs:string">
					<xs:annotation>
						<xs:documentation> Identifier of the call for proposal.</xs:documentation>
					</xs:annotation>
				</xs:element>
				<xs:element name="contracttype" type="controlledElementType"/>
				<xs:element name="keywords" type="xs:string"/>
				<xs:element name="websiteurl" type="xs:string"/>
				<xs:element name="startdate" type="xs:string"/>
				<xs:element name="enddate" type="xs:string"/>
				<xs:element name="duration" type="xs:string"/>
				<xs:element name="ecsc39" type="boolOrEmptyType">
					<xs:annotation>
						<xs:documentation>True if the project has the special clause 39. Available
							only for EC FP7 funded projects. </xs:documentation>
					</xs:annotation>
				</xs:element>
				<xs:element name="oamandatepublications" type="xs:boolean">
					<xs:annotation>
						<xs:documentation>True if the project's funding mandates the availability of project's publications in Open Access.</xs:documentation>
					</xs:annotation>
				</xs:element>
				<xs:element name="ecarticle29_3" type="boolOrEmptyType">
					<xs:annotation>
						<xs:documentation>True if the project is under the EC Open Data Pilot. Available only for EC H2020 funded projects. </xs:documentation>
					</xs:annotation>
				</xs:element>
				<xs:element name="subjects" type="typedElementType"/>
					
				<xs:element name="fundingtree" type="fundingTreeType"/>
				<xs:element name="originalId" type="xs:string"/>
				<xs:element name="collectedfrom" type="namedIdElementType">
					<xs:annotation>
						<xs:documentation>Identifier and name of the datasource from which this
							project has been collected from. </xs:documentation>
					</xs:annotation>
				</xs:element>
				<xs:element name="pid" type="typedElementType"/>
				<xs:element name="rels" type="relsType">
					<xs:annotation>
						<xs:documentation>Relationships to other entities. </xs:documentation>
					</xs:annotation>
				</xs:element>
			</xs:choice>
		</xs:complexType>
	</xs:element>

	<!-- to be removed, and replaced by ContextType -->
	<xs:complexType name="fundingTreeType">
		<xs:sequence>
			<xs:element name="funder" type="funderType"/>
			<xs:choice maxOccurs="unbounded">
				<!-- Three-tier funding hierarchies -->
				<xs:element name="funding_level_2" type="fundingType"/>
				<!-- Two-tier funding hierarchies -->
				<xs:element name="funding_level_1" type="fundingType"/>
				<!-- No funding hierarchy -->
				<xs:element name="funding_level_0" type="fundingType"/>
			</xs:choice>
		</xs:sequence>
	</xs:complexType>

	<xs:complexType name="fundingType">
		<xs:all>
			<xs:element name="id" type="xs:string"/>
			<xs:element name="description" type="xs:string"/>
			<xs:element name="name" type="xs:string"/>
			<xs:element name="class" type="xs:string"/>
			<xs:element name="parent" type="fundingParentType"/>
		</xs:all>
	</xs:complexType>

	<xs:complexType name="fundingParentType">
		<xs:choice minOccurs="0">
			<xs:element name="funding_level_1" type="fundingType"/>
			<xs:element name="funding_level_0" type="fundingType"/>
		</xs:choice>
	</xs:complexType>

	<xs:complexType name="funderType">
		<xs:all>
			<xs:element name="id" type="xs:string"/>
			<xs:element name="shortname" type="xs:string"/>
			<xs:element name="name" type="xs:string"/>
			<xs:element name="jurisdiction" type="xs:string"/>
		</xs:all>
	</xs:complexType>
</xs:schema>