Mercurial > hg > NetworkVis

annotate ismi-python-neo4jrestclient/ismi-vis.py @ 10:04b69bcf4be5

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merge
author casties
date Thu, 01 Oct 2015 17:37:09 +0200
parents 0f4846255b20
children 394bd5cfc508
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1 #!/usr/bin/env python
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2 from json import dumps
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3
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4 from flask import Flask, Response, request
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6 from neo4jrestclient.client import GraphDatabase, Node, Relationship
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8 app = Flask(__name__, static_url_path='/static/')
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9 gdb = GraphDatabase("http://localhost:7474", username="neo4j", password="neo5j")
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12 @app.route("/")
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13 def get_index():
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14 return app.send_static_file('index.html')
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16 @app.route("/commentaries.html")
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17 def get_commentaries():
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18 return app.send_static_file('commentaries.html')
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19
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21 @app.route("/graph")
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22 def get_graph():
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23 query = ("match (t1:TEXT)-[r:is_commentary_on]->(t2:TEXT) return t1,r,t2")
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24 results = gdb.query(query, returns=(Node,Relationship,Node))
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25 n4j_nodes = {}
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26 node_idx = {}
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27 nodes = []
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28 rels = []
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29 i = 0
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30 for node1, rel, node2 in results:
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31 # source node
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32 id1 = node1['ismi_id']
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33 if id1 not in n4j_nodes:
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34 n4j_nodes[id1] = node1
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35 nodes.append({"title": node1['label'], "label": "TEXT"})
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36 node_idx[id1] = i
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37 source = i
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38 i += 1
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39
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40 else:
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41 source = node_idx[id1]
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42
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43 # target node
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44 id2 = node2['ismi_id']
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45 if id2 not in n4j_nodes:
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46 n4j_nodes[id2] = node2
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47 nodes.append({"title": node2['label'], "label": "TEXT"})
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48 node_idx[id2] = i
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49 target = i
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50 i += 1
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51
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52 else:
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53 target = node_idx[id2]
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54
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55 # relation
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56 rels.append({"source": source, "target": target})
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57
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58 return Response(dumps({"nodes": nodes, "links": rels}),
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59 mimetype="application/json")
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61
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62 @app.route("/search")
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63 def get_search():
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64 try:
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65 q = request.args["q"]
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66 except KeyError:
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67 return []
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68 else:
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69 query = ("MATCH (text:TEXT) "
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70 "WHERE text.label =~ {title} "
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71 "RETURN text")
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72 results = gdb.query(
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73 query,
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74 returns=Node,
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75 params={"title": "(?i).*" + q + ".*"}
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76 )
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77 return Response(dumps([{"text": row.properties} for [row] in results]),
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78 mimetype="application/json")
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80
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81 @app.route("/text/<text_id>")
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82 def get_text(text_id):
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83 query = ("MATCH (text:TEXT {ismi_id:{text_id}}) "
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84 " RETURN text"
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85 " LIMIT 1")
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86 results = gdb.query(query, returns=Node, params={"text_id": int(text_id)})
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87 node = results[0][0]
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88 print("node:%s"%repr(node))
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89 return Response(dumps({"title": node['label'], "attrs": node.properties}),
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90 mimetype="application/json")
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91
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92
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93 if __name__ == '__main__':
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94 app.run(port=8080)