Add features-overview.yarspg example

yarspg/examples/features-overview.yarspg

@@ -0,0 +1,66 @@
+# Comment
+
+%GRAPH # section declaration mainly for canonical version
+
+# Graph schema with graph id and optional labels and properties
+S/graph1/{"graph_label", "graphlabel2"}["prop": Bool, "prop2": String]4
+
+# Graph with graph id and optional labels and properties
+/graph1/{"graph_label", "graphlabel2"}["prop": true, "prop2": "Abc"]
+
+# Variables (can store properties; @ - meta properties)
+$graph2_prop = "prop2": "Abc"@"ok": false
+$graph2_prop_schema = "prop2": String @"ok": Bool
+
+# Use of variables
+S/graph2/{"graph_label", "graphlabel2"}["prop": Bool, $graph2_prop_schema]
+/graph2/{"graph_label", "graphlabel2"}["prop": true, $graph2_prop]
+
+# Prefix declaration
+:dc: <http://xmlns.com/dc/0.5/>
+:foaf: <http://xmlns.com/foaf/0.1/>
+
+# Metadata
+-foaf:maker: "Łukasz Szeremeta"
+
+# Node schema with node id and optional: node labels, properties, graphs and local metadata
+# MIN, MAX, OPTIONAL
+S(NS1 {"Author"}["fname": String, "lname": String])
+S(NS2 {"Entry", "InProceedings"}["title": String, "numpages": Integer, "keyword": String OPTIONAL])
+S(NS3 {"Entry", "Article"}["title": String, "numpages": Integer, "keyword": List(String MIN 1 MAX 5) OPTIONAL])
+S(NS4 {"Proceedings"}["title": String, "year": Integer, "month": String OPTIONAL])
+S(NS5 {"Journal"}["title": String, "year": Integer, "vol": Integer])
+
+# Local metadata
+S(NS1 {"Author"}["fname": String, "lname": String])+[foaf:maker: "Łukasz Szeremeta", <http://xmlns.com/dc/0.5/zyz>: "Test metadata"]
+
+# UNIQUE
+S(NS3 {"label333","c"}["value": String,"lang": String,"valid": Bool UNIQUE])/graph2/
+
+# NULL
+S(NS16 {"1ad32"}["list": List(String NULL)])
+
+# List of List of String
+S(NS18 {"ad3"}["list": List(List(String))])
+
+# Edge schema with node ids and optional: edge labels, properties
+S(NS2)-({"has_author"}["order": Integer])->(NS1)
+S(NS3)-({"cities"})->(NS2)
+S(NS2)-({"booktitle"}["pages": String])->(NS4)
+S(NS3)-({"published_in"}["pages": String])->(NS5)
+
+# Node with node id and optional: node labels, properties, graphs and local metadata
+(Author01 {"Author"}["fname": "John", "lname": "Smith"]) #Author01
+(Author02 {"Author"}["fname": "Alice", "lname": "Brown"])
+(EI01 {"Entry", "InProceedings"}["title": "Serialization for...", "numpages": 10, "keyword": "Graph database"])
+(EA01 {"Entry", "Article"}["title": "Property Graph...",  "numpages": 10, "keyword": ["Query", "Graph"]])
+(Proc01 {"Proceedings"}["title": "BDAS", "year": 2018, "month": "May"])
+(Jour01 {"Journal"}["title": "J. DB", "year": 2020, "vol": 30])
+
+# Edge with node ids and optional: edge id, edge labels, properties, graphs, local metadata 
+(EI01)-({"has_author"}["order": 1])->(Author01)
+(EI01)-({"has_author"}["order": 2])->(Author02)
+(EA01)-({"has_author"}["order": 1])->(Author02)
+(EA01)-({"cites"})->(EI01)
+(EI01)-({"booktitle"}["pages": "111-121"])->(Proc01)
+(EA01)-({"published_in"}["pages": "222-232"])->(Jour01)