lab6 updated

Lab6-Neo4j/loaddata.py

@@ -2,44 +2,51 @@
 
 file = open("loaddata.cypher", 'w')
 
+user = {}
+tweet = {}
+hashtag = {}
+
 with open("users.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('CREATE (:User {id: ' + row[0] + ', name: "' + row[1] + '"});\n')
+        user[row[0]] = row[1]
+        file.write('CREATE (:User {name: "' + row[1] + '"});\n')
 
 with open("tweets.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('CREATE (:Tweet {id: ' + row[0] + ', text: "' + row[1] + '"});\n')
+        tweet[row[0]] = row[1]
+        file.write('CREATE (:Tweet {text: "' + row[1] + '"});\n')
 
 with open("hashtags.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('CREATE (:Hashtag {id: ' + row[0] + ', tag: "' + row[1] + '"});\n')
+        hashtag[row[0]] = row[1]
+        file.write('CREATE (:Hashtag {tag: "' + row[1] + '"});\n')
 
 with open("follows.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('MATCH (a:User {id: ' + row[0] + '}), (b:User {id: ' + row[1] + '}) CREATE (a)-[:Follows]->(b);\n')
+        file.write('MATCH (a:User {name: "' + user[row[0]] + '"}), (b:User {name: "' + user[row[1]] + '"}) CREATE (a)-[:Follows]->(b);\n')
 
 with open("sent.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('MATCH (a:User {id: ' + row[0] + '}), (b:Tweet {id: ' + row[1] + '}) CREATE (a)-[:Sent]->(b);\n')
+        file.write('MATCH (a:User {name: "' + user[row[0]] + '"}), (b:Tweet {text: "' + tweet[row[1]] + '"}) CREATE (a)-[:Sent]->(b);\n')
 
 with open("mentions.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('MATCH (a:Tweet {id: ' + row[0] + '}), (b:User {id: ' + row[1] + '}) CREATE (a)-[:Mentions]->(b);\n')
+        file.write('MATCH (a:Tweet {text: "' + tweet[row[0]] + '"}), (b:User {name: "' + user[row[1]] + '"}) CREATE (a)-[:Mentions]->(b);\n')
 
 with open("contains.csv", 'r') as csvfile:
     csvreader = csv.reader(csvfile)
     fields = next(csvreader)
     for row in csvreader:
-        file.write('MATCH (a:Tweet {id: ' + row[0] + '}), (b:Hashtag {id: ' + row[1] + '}) CREATE (a)-[:Contains]->(b);\n')
+        file.write('MATCH (a:Tweet {text: "' + tweet[row[0]] + '"}), (b:Hashtag {tag: "' + hashtag[row[1]] + '"}) CREATE (a)-[:Contains]->(b);\n')

Lab6-Neo4j/queries.txt

@@ -4,11 +4,11 @@ b. MATCH (t:Tweet)-[:Contains]->(h:Hashtag) WHERE h.tag = 'proud' AND t.text =~
 
 c. MATCH (n:User)-[:Sent]->(t:Tweet)<-[:Sent]-(:User {name: "Jessica"}) WHERE NOT (t)-[:Contains]->(:Hashtag) RETURN n.name, t.text;
 
-d. MATCH (n:User)-[:Sent]->(t:Tweet)<-[:Sent]-(j:User {name: "Jessica"}) WHERE NOT (t)-[:Contains]->(:Hashtag) AND NOT (n)-[:Follows]->(j) RETURN n.name;
+d. MATCH (n:User)-[:Sent]->(t:Tweet)<-[:Sent]-(j:User {name: "Jessica"}) WHERE NOT (t)-[:Contains]->(:Hashtag) AND NOT (n)-[:Follows]->(j) RETURN n.name, t.text;
 
-e. MATCH (:User)-[:Follows]->(n:User) RETURN n.name, count(*) as followers ORDER BY followers DESC LIMIT 5;
+e. MATCH (:User)-[:Follows]->(n:User) RETURN n.name, count(*) as cnt ORDER BY cnt DESC, n.name LIMIT 5;
 
-f. MATCH p = (:User {name: "Ashley"})-[:Follows*]->(n:User) WHERE n.name<>"Ashley" RETURN n.name, max(length(p))
+f. MATCH p = (:User {name: "Ashley"})-[:Follows*]->(n:User) WHERE n.name<>"Ashley" with n.name as x, min(length(p)) as d return max(d);
 
 g. MATCH (:User {name: "Thomas"})-[:Follows]->(:User)<-[:Follows]-(n:User) RETURN n.name, count(*) as cnt ORDER BY cnt DESC, n.name LIMIT 5;