tests/test_neo4j_batch.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import neo4j
  16
  17 var srv = new Neo4jServer
  18 srv.start_quiet
  19
  20 var key = get_time
  21
  22 var andres = new NeoNode
  23 andres.labels.add_all(["PERSON", "MALE"])
  24 andres["name"] = "Andres"
  25 andres["age"] = 24
  26 andres["status"] = true
  27 andres["groups"] = new JsonArray.from([1, 2, 3])
  28 andres["key"] = key
  29
  30 var kate = new NeoNode
  31 kate.labels.add_all(["PERSON", "FEMALE"])
  32 kate["name"] = "Kate"
  33 kate["age"] = 25
  34 kate["status"] = false
  35
  36 var loves = new NeoEdge(andres, "LOVES", kate)
  37 loves["since"] = 1999
  38
  39 var client = new Neo4jClient("http://localhost:7474")
  40 assert client.is_ok
  41
  42 print "# Save batch\n"
  43
  44 var batch = new NeoBatch(client)
  45 batch.save_node(andres)
  46 batch.save_node(kate)
  47 batch.save_edge(loves)
  48 var errors = batch.execute
  49
  50 assert errors.is_empty
  51 assert andres.is_linked
  52 assert kate.is_linked
  53 assert loves.is_linked
  54
  55 var andres_url = andres.url.to_s
  56 var kate_url = kate.url.to_s
  57 var loves_url = loves.url.to_s
  58
  59 client = new Neo4jClient("http://localhost:7474")
  60 assert client.is_ok
  61
  62 # Read Andres
  63 var res4 = client.load_node(andres_url)
  64 assert res4.is_linked
  65 print res4["name"].to_s
  66 print res4["age"].to_s
  67 print res4["status"].to_s
  68 print res4["groups"].to_json
  69 print res4.labels.join(" ")
  70 assert res4.in_edges.is_empty
  71 assert not res4.out_edges.is_empty
  72
  73 # Read Kate
  74 var res5 = client.load_node(kate_url)
  75 assert res5.is_linked
  76 print res5["name"].to_s
  77 print res5["age"].to_s
  78 print res5["status"].to_s
  79 print res5.labels.join(" ")
  80 assert not res5.in_edges.is_empty
  81 assert res5.out_edges.is_empty
  82
  83 # Read LOVES
  84 var res6 = client.load_edge(loves_url)
  85 assert res6.is_linked
  86 print res6.rel_type.to_s
  87 print res6["since"].to_s
  88 print "{res4["name"].to_s} LOVES {res4.out_nodes("LOVES").first["name"].to_s}"
  89 print "{res5["name"].to_s} IS LOVED BY {res5.in_nodes("LOVES").first["name"].to_s}"
  90
  91 # Test Cypher
  92 var query = (new CypherQuery).
  93         nmatch("(n: MALE)-[r: LOVES]->(m)").
  94         nwhere("n.name = 'Andres'").
  95         nand("n.key = {key}").
  96         nreturn("n, r, m")
  97 var res7 = client.cypher(query)
  98 assert res7.as(JsonObject)["data"].as(JsonArray).length == 1
  99