Some reflections on SPARQL-Anything/sparql.anything#342

SPARQL-Anything · Feb 7, 2023 · e767caf · e767caf
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diff --git a/append/README.md b/append/README.md
@@ -0,0 +1,33 @@
+# append
+This parameter tells the command line to now overwrite to an existing file but simply append to it. 
+Here we test the behaviour in different configurations.
+
+The following use case works nicely, multiple runs append to the same file:
+```
+fx -q construct.sparql -o out.nt --append
+fx -q construct.sparql -o out.nt --append
+fx -q construct.sparql -o out.nt --append
+```
+
+This should work with .ttl as well (repeating prefixes should not be an issue):
+```
+fx -q construct.sparql -o out.ttl --append
+fx -q count-triples.sparql (20)
+fx -q construct.sparql -o out.ttl --append
+fx -q count-triples.sparql (40)
+```
+
+This will not work with rdf/xml, json, csv, etc... shall we alert and stop the process when this happens?
+
+## Interaction with `-v`
+In the following case, the system creates a file for each parameter bindings (--append has no effect):
+```
+fx -q query.sparql -v params.csv -o out.csv --append
+
+out-1.csv
+out-2.csv
+out-3.csv
+out-4.csv
+...
+```
+Question: should we instead append to the same file?
diff --git a/append/construct.sparql b/append/construct.sparql
@@ -0,0 +1,16 @@
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX xyz: <http://sparql.xyz/facade-x/data/>
+PREFIX fx:  <http://sparql.xyz/facade-x/ns/>
+
+construct {
+ ?subject xyz:key ?key ; 
+ 	xyz:value ?value .
+}
+where {
+	service <x-sparql-anything:> {
+		fx:properties fx:location "./data.json" .		
+		[] xyz:key ?_key_int ; xyz:value ?value .
+	}
+	BIND (?_key_int as ?key) .
+	BIND ( fx:entity(xyz:,"append/", ?key , "/" , STR(NOW()) ) as ?subject ) .
+}
diff --git a/append/count-triples.sparql b/append/count-triples.sparql
@@ -0,0 +1,11 @@
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX xyz: <http://sparql.xyz/facade-x/data/>
+PREFIX fx:  <http://sparql.xyz/facade-x/ns/>
+
+select count(*)
+where {
+	service <x-sparql-anything:> {
+		fx:properties fx:location "./out.ttl" .		
+		?a ?b ?c
+	}
+}
diff --git a/append/data.json b/append/data.json
@@ -0,0 +1,12 @@
+[
+	{"key": 1, "value": "A"},
+	{"key": 2, "value": "B"},
+	{"key": 3, "value": "C"},
+	{"key": 4, "value": "D"},
+	{"key": 5, "value": "E"},
+	{"key": 6, "value": "F"},
+	{"key": 7, "value": "G"},
+	{"key": 8, "value": "H"},
+	{"key": 9, "value": "I"},
+	{"key": 10, "value": "J"}
+]
diff --git a/append/out-1.csv b/append/out-1.csv
@@ -0,0 +1,2 @@
+value
+A
diff --git a/append/out-10.csv b/append/out-10.csv
@@ -0,0 +1,2 @@
+value
+J
diff --git a/append/out-2.csv b/append/out-2.csv
@@ -0,0 +1,2 @@
+value
+B
diff --git a/append/out-3.csv b/append/out-3.csv
@@ -0,0 +1,2 @@
+value
+C
diff --git a/append/out-4.csv b/append/out-4.csv
@@ -0,0 +1,2 @@
+value
+D
diff --git a/append/out-5.csv b/append/out-5.csv
@@ -0,0 +1,2 @@
+value
+E
diff --git a/append/out-6.csv b/append/out-6.csv
@@ -0,0 +1,2 @@
+value
+F
diff --git a/append/out-7.csv b/append/out-7.csv
@@ -0,0 +1,2 @@
+value
+G
diff --git a/append/out-8.csv b/append/out-8.csv
@@ -0,0 +1,2 @@
+value
+H
diff --git a/append/out-9.csv b/append/out-9.csv
@@ -0,0 +1,2 @@
+value
+I
diff --git a/append/out.csv b/append/out.csv
@@ -0,0 +1,22 @@
+_key_int,value
+2,B
+5,E
+6,F
+4,D
+8,H
+10,J
+9,I
+3,C
+7,G
+1,A
+_key_int,value
+2,B
+5,E
+6,F
+4,D
+8,H
+10,J
+9,I
+3,C
+7,G
+1,A
diff --git a/append/out.nt b/append/out.nt
@@ -0,0 +1,40 @@
+<http://sparql.xyz/facade-x/data/append/5/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "E" .
+<http://sparql.xyz/facade-x/data/append/5/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "5"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/10/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "J" .
+<http://sparql.xyz/facade-x/data/append/10/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "10"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/3/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "C" .
+<http://sparql.xyz/facade-x/data/append/3/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "3"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/6/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "F" .
+<http://sparql.xyz/facade-x/data/append/6/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "6"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/8/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "H" .
+<http://sparql.xyz/facade-x/data/append/8/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "8"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/1/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "A" .
+<http://sparql.xyz/facade-x/data/append/1/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "1"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/4/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "D" .
+<http://sparql.xyz/facade-x/data/append/4/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "4"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/7/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "G" .
+<http://sparql.xyz/facade-x/data/append/7/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "7"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/9/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "I" .
+<http://sparql.xyz/facade-x/data/append/9/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "9"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/2/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/value> "B" .
+<http://sparql.xyz/facade-x/data/append/2/2023-02-07T09:20:30.212+00:00> <http://sparql.xyz/facade-x/data/key> "2"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/9/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "I" .
+<http://sparql.xyz/facade-x/data/append/9/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "9"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/2/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "B" .
+<http://sparql.xyz/facade-x/data/append/2/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "2"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/5/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "E" .
+<http://sparql.xyz/facade-x/data/append/5/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "5"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/8/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "H" .
+<http://sparql.xyz/facade-x/data/append/8/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "8"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/10/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "J" .
+<http://sparql.xyz/facade-x/data/append/10/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "10"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/3/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "C" .
+<http://sparql.xyz/facade-x/data/append/3/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "3"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/6/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "F" .
+<http://sparql.xyz/facade-x/data/append/6/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "6"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/1/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "A" .
+<http://sparql.xyz/facade-x/data/append/1/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "1"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/4/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "D" .
+<http://sparql.xyz/facade-x/data/append/4/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "4"^^<http://www.w3.org/2001/XMLSchema#int> .
+<http://sparql.xyz/facade-x/data/append/7/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/value> "G" .
+<http://sparql.xyz/facade-x/data/append/7/2023-02-07T09:20:32.764+00:00> <http://sparql.xyz/facade-x/data/key> "7"^^<http://www.w3.org/2001/XMLSchema#int> .
diff --git a/append/out.ttl b/append/out.ttl
@@ -0,0 +1,86 @@
+@prefix fx:  <http://sparql.xyz/facade-x/ns/> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix xyz: <http://sparql.xyz/facade-x/data/> .
+
+<http://sparql.xyz/facade-x/data/append/5/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "5"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "E" .
+
+<http://sparql.xyz/facade-x/data/append/8/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "8"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "H" .
+
+<http://sparql.xyz/facade-x/data/append/10/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "10"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "J" .
+
+<http://sparql.xyz/facade-x/data/append/1/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "1"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "A" .
+
+<http://sparql.xyz/facade-x/data/append/3/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "3"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "C" .
+
+<http://sparql.xyz/facade-x/data/append/6/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "6"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "F" .
+
+<http://sparql.xyz/facade-x/data/append/9/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "9"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "I" .
+
+<http://sparql.xyz/facade-x/data/append/4/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "4"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "D" .
+
+<http://sparql.xyz/facade-x/data/append/7/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "7"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "G" .
+
+<http://sparql.xyz/facade-x/data/append/2/2023-02-07T09:24:22.551+00:00>
+        xyz:key    "2"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "B" .
+@prefix fx:  <http://sparql.xyz/facade-x/ns/> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix xyz: <http://sparql.xyz/facade-x/data/> .
+
+<http://sparql.xyz/facade-x/data/append/2/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "2"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "B" .
+
+<http://sparql.xyz/facade-x/data/append/5/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "5"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "E" .
+
+<http://sparql.xyz/facade-x/data/append/10/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "10"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "J" .
+
+<http://sparql.xyz/facade-x/data/append/3/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "3"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "C" .
+
+<http://sparql.xyz/facade-x/data/append/6/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "6"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "F" .
+
+<http://sparql.xyz/facade-x/data/append/8/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "8"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "H" .
+
+<http://sparql.xyz/facade-x/data/append/1/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "1"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "A" .
+
+<http://sparql.xyz/facade-x/data/append/4/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "4"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "D" .
+
+<http://sparql.xyz/facade-x/data/append/7/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "7"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "G" .
+
+<http://sparql.xyz/facade-x/data/append/9/2023-02-07T09:24:38.601+00:00>
+        xyz:key    "9"^^<http://www.w3.org/2001/XMLSchema#int> ;
+        xyz:value  "I" .
diff --git a/append/params.csv b/append/params.csv
@@ -0,0 +1,11 @@
+key
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
diff --git a/append/query.sparql b/append/query.sparql
@@ -0,0 +1,11 @@
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX xyz: <http://sparql.xyz/facade-x/data/>
+PREFIX fx:  <http://sparql.xyz/facade-x/ns/>
+
+select *
+where {
+	service <x-sparql-anything:> {
+		fx:properties fx:location "./data.json" .		
+		[] xyz:key ?_key_int ; xyz:value ?value .
+	}
+}