From 49d698a532c6e0064e8178de0460e53b9daf85b7 Mon Sep 17 00:00:00 2001
From: Enrico Ottonello <enrico.ottonello@isti.cnr.it>
Date: Thu, 22 Apr 2021 16:51:44 +0200
Subject: [PATCH] optimized query using named graph

---
 .../sparql/read_record_data_template.sparql   | 71 ++++++++++++++-----
 1 file changed, 53 insertions(+), 18 deletions(-)

diff --git a/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_record_data_template.sparql b/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_record_data_template.sparql
index af6b0db..0411ea4 100644
--- a/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_record_data_template.sparql
+++ b/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_record_data_template.sparql
@@ -68,12 +68,8 @@ CONSTRUCT {
 %record aoprop:description ?description .
 %record aoprop:language ?language .
 }
-from  <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::aat>
-from  <https://ariadne-infrastructure.eu/ariadneplus::%datasource::aatplus>
-from  <https://ariadne-infrastructure.eu/ariadneplus::%datasource::periodo>
-from <https://ariadne-infrastructure.eu/ariadneplus::%datasource::periodoplus>
-from  <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId>
 where {
+     graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId> {
     	%record	aocat:has_language / skos:prefLabel ?language .
     	%record	aocat:has_original_id ?originalId .
     	%record aocat:is_part_of ?partOf .
@@ -81,12 +77,6 @@ where {
         ?creator aocat:has_name ?creatorName .
 	    %record aocat:has_title ?title .
     	%record aocat:has_type / skos:prefLabel ?resourceType .
-    	%record aocat:has_native_subject ?nativeSubject .
-        ?nativeSubject skos:prefLabel ?nativeSubjectPrefLabel .
-        optional {
-			%record aocat:has_derived_subject ?derivedSubject .
-        	?derivedSubject skos:prefLabel ?derivedSubjectPrefLabel .
-        }
         optional {
 	        ?creator aocat:has_email ?creatorEmail .
     	}
@@ -99,23 +89,40 @@ where {
         optional {
         	%record aocat:has_landing_page / rdfs:label ?landingPage .
         }
-    	optional {
+    }
+
+    optional {
+        graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId> {
         	%record aocat:has_temporal_coverage  ?temporalNative .
-        	?temporalNative aocat:has_native_period / skos:prefLabel ?temporalNativePeriodName .
+        	?temporalNative aocat:has_native_period ?nativeLabel .
+        	?nativeLabel skos:prefLabel ?temporalNativePeriodName .
+        }
+        graph <https://ariadne-infrastructure.eu/ariadneplus::%datasource::periodoplus> {
             optional {
                 ?temporalNative aocat:from ?temporalNativeFrom .
                 ?temporalNative aocat:until ?temporalNativeUntil .
             }
         }
-        optional {
-        	%record aocat:has_temporal_coverage ?temporal .
-        	?temporal aocat:has_period / skos:prefLabel ?temporalPeriodName .
-        	optional {
+    }
+
+
+    optional {
+        graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId> {
+                %record aocat:has_temporal_coverage ?temporal .
+            }
+        graph <https://ariadne-infrastructure.eu/ariadneplus::%datasource::periodoplus> {
+            ?temporal aocat:has_period ?label .
+            graph <https://ariadne-infrastructure.eu/ariadneplus::%datasource::periodo> {
+                ?label skos:prefLabel ?temporalPeriodName .
+            }
+            optional {
                 ?temporal aocat:from ?temporalFrom .
                 ?temporal aocat:until ?temporalUntil .
-        	}
+            }
         }
+    }
 
+    graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId> {
     	{
 		select  *
         where {
@@ -146,7 +153,9 @@ where {
             }
     	}
     	}
+    }
 
+    graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId> {
     	{
         select *
         where {
@@ -170,5 +179,31 @@ where {
             }
             }
     	}
+    }
+
+    graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::%collectionId> {
+        {
+            select  *
+            where {
+                %record aocat:has_native_subject ?nativeSubject .
+                ?nativeSubject skos:prefLabel ?nativeSubjectPrefLabel .
+            }
+        }
+    }
+
+    graph <https://ariadne-infrastructure.eu/ariadneplus::%datasource::aatplus> {
+        {
+            select  *
+            where {
+                optional {
+                    %record aocat:has_derived_subject ?derivedSubject .
+                    graph <https://ariadne-infrastructure.eu/api_________::ariadne_plus::%datasource::aat> {
+                        ?derivedSubject skos:prefLabel ?derivedSubjectPrefLabel .
+                    }
+                }
+            }
+        }
+    }
+
     BIND (lang(?derivedSubjectPrefLabel) as ?aatSubjectsLang)
 }
\ No newline at end of file