declare namespace is = 'http://gcube-system.org/namespaces/informationsystem/registry'; declare namespace gc = 'http://gcube-system.org/namespaces/common/core/porttypes/GCUBEProvider'; for $result in collection("/db/Profiles/RunningInstance")//Document/Data/is:Profile/Resource where ($result/Profile/DeploymentData/Status/string() eq "ready") and ($result//ServiceName/string() eq "IS-Registry") and ($result//ServiceClass/string() eq "InformationSystem") return $result