sdg-queries/queries.xsd at master · Aurora-Network-Global/sdg-queries · GitHub

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<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:dc="http://purl.org/dc/terms"
           xmlns:aqd="http://aurora-network.global/queries/namespace/"
           elementFormDefault="qualified"
           targetNamespace="http://aurora-network.global/queries/namespace/">

    <xs:import schemaLocation="https://www.dublincore.org/schemas/xmls/qdc/dcterms.xsd"
               namespace="http://purl.org/dc/terms"/>

    <xs:annotation>
        <xs:documentation xml:lang="en">
            XML Schema 2020-02-01 by Eike Spielberg
        </xs:documentation>
    </xs:annotation>

    <!-- Definition of query set, holding multiple queries. -->
    <xs:element name="querySet" type="QuerySetType"/>
    <xs:complexType name="QuerySetType">
        <xs:sequence>
            <xs:element ref="query" maxOccurs="unbounded"/>
        </xs:sequence>
    </xs:complexType>

    <!-- main element of the query definition. -->
    <xs:element name="query">
        <xs:complexType>
            <xs:sequence>
                <xs:group ref="dc:elementsAndRefinementsGroup"/>
                <xs:element name="query-definitions" type="aqd:QueryDefintionsType"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <!-- Definition of Timerange, a special filter element. -->
    <xs:complexType name="TimerangeType">
        <xs:sequence>
            <xs:element name="start" type="xs:string"/>
            <xs:element name="end" type="xs:string"/>
        </xs:sequence>
        <xs:attribute name="field" type="xs:string"/>
    </xs:complexType>

    <!--  Definition of general filter elements. -->
    <xs:complexType name="FilterType">
        <xs:sequence>
            <xs:element name="type" type="xs:string"/>
        </xs:sequence>
        <xs:attribute name="field" type="xs:string" use="required"/>
        <xs:attribute name="type" type="xs:string"/>
    </xs:complexType>

    <!-- Definition of filters. Consisting of individual filters and a timerange. -->
    <xs:complexType name="FiltersType">
        <xs:sequence>
            <xs:element name="timerange" type="TimerangeType"/>
            <xs:element name="filter" type="aqd:FilterType" maxOccurs="unbounded"
                        minOccurs="0"/>
        </xs:sequence>
    </xs:complexType>

    <!-- Definition of the descriptions element. giving context to the query lines. -->
    <xs:complexType name="SubqueryDescriptionsType">
        <xs:sequence>
            <xs:element name="subquery-description" maxOccurs="unbounded"
                        type="xs:string"/>
        </xs:sequence>
    </xs:complexType>

    <!-- Definition of a single query line. -->
    <xs:complexType name="QueryLinesType">
        <xs:sequence>
            <xs:element name="query-line" type="xs:string" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:attribute name="field" type="xs:string"/>
                </xs:complexType>
            </xs:element>
        </xs:sequence>
    </xs:complexType>

    <!-- Definition of the subquery, consisting of a number of individual topics. -->
    <xs:complexType name="QueryDefintionsType">
        <xs:sequence>
            <xs:element name="query-definition" type="aqd:QueryDefinitionType" maxOccurs="unbounded"/>
            <xs:element name="filters" type="aqd:FiltersType"/>
        </xs:sequence>
        <xs:attribute name="syntax" type="xs:string">
            <xs:simpleType>
                <xs:restriction base="xs:string">
                    <xs:enumeration value="SCOPUS"/>
                    <xs:enumeration value="WOS"/>
                    <xs:enumeration value="MYCORE"/>
                    <xs:enumeration value="CROSSREF"/>
					<xs:enumeration value="LUCENE"/>
					<xs:enumeration value="CQL"/>
                </xs:restriction>
            </xs:simpleType>
        </xs:attribute>
    </xs:complexType>

    <!-- Definition of the a query definition, consisting of an individual identifier, query lines, descriptions, and
     possibly filters. -->
    <xs:complexType name="QueryDefinitionType">
        <xs:sequence>
            <xs:element name="subquery-identifier" type="xs:int"/>
            <xs:element name="subquery-descriptions" type="aqd:SubqueryDescriptionsType"/>
            <xs:element name="query-lines" type="aqd:QueryLinesType"/>
            <xs:element name="filters" type="aqd:FiltersType" minOccurs="0"/>
        </xs:sequence>
    </xs:complexType>

</xs:schema>