Вы можете связать дочерний элемент с его родителем в RML с помощью rr:joinCondition
:
rr:predicateObjectMap [
rr:predicate iec61499:hasAttribute;
rr:objectMap [
rr:parentTriplesMap <#AttributeMapping>;
rr:joinCondition [
rr:child "@Name";
rr:parent "../@Name"
];
];
].
. rr:joinCondition
будет гарантировать, что объединение произойдет только тогда, когда значения rr:child
и rr:parent
равны друг другу.
Я изменил ваши данные, поскольку XML был недействительным, отсутствовал конечный тег </Application>
, вы можете найти новые данные ниже:
<Application ID="A4ABD8400116F035" Name="HotWater">
<SubAppNetwork>
<FB ID="3D77F5AE3E23F522" Name="HW_setpoint" Type="CAThmiInput" x="360" y="880" Namespace="nxtControl.Tutorial" />
<FB ID="38615A5C87F12AA3" Name="HW_pump1" Type="CATmotor" x="2760" y="260" Namespace="nxtControl.Tutorial" />
<FB ID="3632883FE07D2F09" Name="HW_pump2" Type="CATmotor" x="2760" y="860" Namespace="nxtControl.Tutorial">
<Parameter Name="AutoOn" Value="TRUE" />
</FB>
<FB ID="FB64994118EB2489" Name="HW_pidController" Type="CATpidController" x="1000" y="260" Namespace="nxtControl.Tutorial" />
<FB ID="1C32C8BEDD84AAA7" Name="HW_sensor" Type="CATsensor" x="360" y="260" Namespace="nxtControl.Tutorial" />
<FB ID="97DE5397424C589F" Name="HW_valve" Type="CATvalve" x="1620" y="260" Namespace="nxtControl.Tutorial" />
<FB ID="3A265436F99A7B87" Name="HW_compare" Type="COMPARE_1990CFD1468AAE4A6" x="2220" y="260" Namespace="Main">
<Attribute Name="Configuration.GenericFBType.InterfaceParams" Value="Runtime.Standard#CNT:=2;IN${CNT}:LREAL" />
<Parameter Name="IN2" Value="0.0" />
</FB>
<EventConnections>
<Connection Source="HW_sensor.CNF" Destination="HW_pidController.REQ" />
<Connection Source="HW_setpoint.CNF" Destination="HW_pidController.REQ" dx1="110.7709">
<AvoidsNodes>false</AvoidsNodes>
</Connection>
<Connection Source="HW_pidController.CNF" Destination="HW_valve.REQ" />
<Connection Source="HW_valve.CNF" Destination="HW_compare.REQ" />
<Connection Source="HW_compare.CNF" Destination="HW_pump1.REQ" />
</EventConnections>
<DataConnections>
<Connection Source="HW_sensor.outValue" Destination="HW_pidController.pv" dx1="41.3125" />
<Connection Source="HW_setpoint.value" Destination="HW_pidController.sp" dx1="170.7709">
<AvoidsNodes>false</AvoidsNodes>
</Connection>
<Connection Source="HW_pidController.cp" Destination="HW_valve.AutoSP" />
<Connection Source="HW_compare.GT" Destination="HW_pump1.AutoOn" dx1="70" />
<Connection Source="HW_valve.cp" Destination="HW_compare.IN1" />
</DataConnections>
</SubAppNetwork>
</Application>
Я сократил ваш пример до минимума и добавил rr:joinCondition
для выполнения объединения, только когда атрибут Name
для FB
соответствует для родителя и его потомка:
@base <http://example.org/> .
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix schema: <http://schema.org/> .
@prefix dbo: <http://dbpedia.org/ontology/> .
@prefix iec61499: <http://example.org/iec61499/> .
<#AttributeMapping>
a rr:TriplesMap;
rml:logicalSource [
rml:source "System.xml";
rml:referenceFormulation ql:XPath;
rml:iterator "/Application/SubAppNetwork/FB/Attribute"
];
rr:subjectMap [
rr:template "http://sth/example#/SubAppNetwork/FB/Attribute-{@Name}";
rr:class iec61499:Attribute
];
rr:predicateObjectMap [
rr:predicate iec61499:hasName;
rr:objectMap [
rml:reference "@Name"
];
].
<#FBMapping>
a rr:TriplesMap;
rml:logicalSource [
rml:source "System.xml" ;
rml:iterator "/Application/SubAppNetwork/FB";
rml:referenceFormulation ql:XPath
];
rr:subjectMap [
rr:template "http://sth/example#/SubAppNetwork/FB-{../../@Name}-{@ID}";
rr:class iec61499:FB
];
rr:predicateObjectMap [
rr:predicate iec61499:hasName;
rr:objectMap [
rml:reference "@Name"
];
];
rr:predicateObjectMap [
rr:predicate iec61499:hasAttribute;
rr:objectMap [
rr:parentTriplesMap <#AttributeMapping>;
rr:joinCondition [
rr:child "@Name";
rr:parent "../@Name"
];
];
].
Если вы предоставите обработчик RML этих сопоставлений и данных, вы получите следующий вывод:
<http://sth/example#/SubAppNetwork/FB/Attribute-Configuration.GenericFBType.InterfaceParams> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/Attribute>.
<http://sth/example#/SubAppNetwork/FB/Attribute-Configuration.GenericFBType.InterfaceParams> <http://example.org/iec61499/hasName> "Configuration.GenericFBType.InterfaceParams".
<http://sth/example#/SubAppNetwork/FB-HotWater-3D77F5AE3E23F522> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-3D77F5AE3E23F522> <http://example.org/iec61499/hasName> "HW_setpoint".
<http://sth/example#/SubAppNetwork/FB-HotWater-38615A5C87F12AA3> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-38615A5C87F12AA3> <http://example.org/iec61499/hasName> "HW_pump1".
<http://sth/example#/SubAppNetwork/FB-HotWater-3632883FE07D2F09> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-3632883FE07D2F09> <http://example.org/iec61499/hasName> "HW_pump2".
<http://sth/example#/SubAppNetwork/FB-HotWater-FB64994118EB2489> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-FB64994118EB2489> <http://example.org/iec61499/hasName> "HW_pidController".
<http://sth/example#/SubAppNetwork/FB-HotWater-1C32C8BEDD84AAA7> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-1C32C8BEDD84AAA7> <http://example.org/iec61499/hasName> "HW_sensor".
<http://sth/example#/SubAppNetwork/FB-HotWater-97DE5397424C589F> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-97DE5397424C589F> <http://example.org/iec61499/hasName> "HW_valve".
<http://sth/example#/SubAppNetwork/FB-HotWater-3A265436F99A7B87> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/iec61499/FB>.
<http://sth/example#/SubAppNetwork/FB-HotWater-3A265436F99A7B87> <http://example.org/iec61499/hasName> "HW_compare".
<http://sth/example#/SubAppNetwork/FB-HotWater-3A265436F99A7B87> <http://example.org/iec61499/hasAttribute> <http://sth/example#/SubAppNetwork/FB/Attribute-Configuration.GenericFBType.InterfaceParams>.
Примечание : я участвую в RML и его технологиях.