D-Net

<?xml version="1.0" encoding="UTF-8"?>

<Policy xmlns="urn:oasis:names:tc:xacml:3.0:core:schema:wd-17" PolicyId="NOA_ENABLE_ALL_ACADEMIC" RuleCombiningAlgId="urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:permit-overrides" Version="1.0">

   <Description>This policy enables all users with academic access to download NOA's observations</Description>

   <Target>

      <AnyOf>

         <AllOf>

            <Match MatchId="urn:oasis:names:tc:xacml:1.0:function:string-equal">

               <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">National Observatory of Athens - http://dias-wrapper.space.noa.gr:8080/espas/csw</AttributeValue>

               <AttributeDesignator

                        Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject"

                        AttributeId="urn:espas:names:observation:provider"

                   DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="true"/>

            </Match>

         </AllOf>

      </AnyOf>

   </Target>

   <Rule Effect="Permit" RuleId="ENABLE_ACADEMIC_USERS">

      <Condition>

         <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-equal">

            <Apply FunctionId="urn:oasis:names:tc:xacml:1.0:function:string-one-and-only">

               <AttributeDesignator

                        Category="urn:oasis:names:tc:xacml:1.0:subject-category:access-subject"

                        AttributeId="urn:espas:names:user:intendeduse"

                                    DataType="http://www.w3.org/2001/XMLSchema#string" MustBePresent="true"/>

            </Apply>

            <AttributeValue DataType="http://www.w3.org/2001/XMLSchema#string">academic</AttributeValue>

         </Apply>

      </Condition>

   </Rule>

</Policy>