From d72b2469a9f6f8b4d30c4ec72a12a10c02e5e90e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20Sch=C3=A4rtl?= <andreas@schaertl.me>
Date: Sun, 27 Sep 2020 10:30:49 +0200
Subject: [PATCH] experimental: add script for generating a simple RDF tree
We use this to test out transitive queries w/ GraphDB.
---
.../transitive-queries/generate-ttl.py | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100755 experimental/transitive-queries/generate-ttl.py
diff --git a/experimental/transitive-queries/generate-ttl.py b/experimental/transitive-queries/generate-ttl.py
new file mode 100755
index 0000000..8c90791
--- /dev/null
+++ b/experimental/transitive-queries/generate-ttl.py
@@ -0,0 +1,66 @@
+#! /usr/bin/env python3
+
+
+from typing import List
+
+
+NS = 'http://example.org/rdf/'
+PREDICATE = '<http://example.org/rdf/has_edge_to>'
+
+
+class Node:
+ def __init__(self, name: str, children=[]):
+ self.name = name
+ self.children = children
+
+ def to_rdf(self) -> str:
+ rdf = ''
+
+ for child in self.children:
+ rdf += self.rdf_uri() + '\n'
+ rdf += ' ' + PREDICATE + '\n'
+ rdf += ' ' + child.rdf_uri() + ' .' + '\n\n'
+
+ rdf += child.to_rdf()
+
+ return rdf
+
+ def rdf_uri(self) -> str:
+ return '<%s%s>' % (NS, self.name)
+
+
+def ttl_header() -> str:
+ owl_transitive_property = '<http://www.w3.org/2002/07/owl#TransitiveProperty>'
+ rdf_type = '<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>'
+
+ header = ''
+
+ header += PREDICATE + '\n'
+ header += ' ' + rdf_type + '\n'
+ header += ' ' + owl_transitive_property + ' .' + '\n\n'
+
+ return header
+
+
+def main():
+ C = Node('C')
+ D = Node('D')
+ B = Node('B', [C, D])
+ G = Node('G')
+ F = Node('F', [G])
+ E = Node('E', [F])
+ A = Node('A', [B, E])
+
+
+ header = ttl_header()
+ print(header, end='')
+
+ triplets = A.to_rdf()
+ print(triplets.rstrip())
+
+
+if __name__ == '__main__':
+ try:
+ main()
+ except (KeyboardInterrupt, SystemExit, BrokenPipeError):
+ pass
--
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