From 0301f74373230810122abdfd76e68a83387452e0 Mon Sep 17 00:00:00 2001
From: Mario Wenzel <maweki@gmail.com>
Date: Fri, 4 Oct 2019 20:11:41 +0200
Subject: [PATCH] added path2 scripts
---
jena/path2.qry | 2 ++
neo4j/path2.qry | 10 ++++++++++
souffle/path2.dl | 15 +++++++++++++++
sql/path2.sql | 4 ++++
4 files changed, 31 insertions(+)
create mode 100644 jena/path2.qry
create mode 100644 neo4j/path2.qry
create mode 100644 souffle/path2.dl
create mode 100644 sql/path2.sql
diff --git a/jena/path2.qry b/jena/path2.qry
new file mode 100644
index 0000000..13a3252
--- /dev/null
+++ b/jena/path2.qry
@@ -0,0 +1,2 @@
+prefix : <http://example.org/stuff/1.0/>
+SELECT (count(*) as ?resultcount) WHERE {?a :par / :par ?b}
diff --git a/neo4j/path2.qry b/neo4j/path2.qry
new file mode 100644
index 0000000..f9d2433
--- /dev/null
+++ b/neo4j/path2.qry
@@ -0,0 +1,10 @@
+MATCH (n)
+DETACH DELETE n;
+
+LOAD CSV FROM 'file://INSTANCE' AS line
+MERGE (a:Node {n: toInteger(line[0])})
+MERGE (b:Node {n: toInteger(trim(line[1]))})
+CREATE (a)-[:PAR]->(b);
+
+MATCH (a)-[:PAR]->(t)-[:PAR]->(b)
+RETURN COUNT(DISTINCT [a,b]);
diff --git a/souffle/path2.dl b/souffle/path2.dl
new file mode 100644
index 0000000..0b07c6a
--- /dev/null
+++ b/souffle/path2.dl
@@ -0,0 +1,15 @@
+
+//
+// par - "parent"/"edge" relation
+//
+.decl par (n:number, m:number)
+.input par(IO=file, filename="INSTANCE")
+// par(1,2).
+// par(2,3).
+
+//.decl path2 (n:number, m:number) output
+.decl path2 (n:number, m:number)
+//.output path2(IO=stdout)
+.printsize path2
+
+path2(X, Y) :- par(X, Z), par(Z, Y).
diff --git a/sql/path2.sql b/sql/path2.sql
new file mode 100644
index 0000000..8d9a599
--- /dev/null
+++ b/sql/path2.sql
@@ -0,0 +1,4 @@
+
+WITH path2(a,b) AS (
+ SELECT p1.a, p2.b from par p1 JOIN par p2c ON p1.b = p2.a
+) SELECT Count(*) FROM path2;
--
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