RNeo4j: Neo4j Driver for R

Neo4jドライバー

> library(RNeo4j)

バージョン: 1.6.4

関数名 概略
RNeo4j Neo4j Driver for R
addConstraint Uniqueness Constraints
addIndex Indexes
addLabel Node Labels
allDijkstra Weighted Shortest Paths
allShortestPaths Shortest Paths and Weighted Shortest Paths
appendCypher Transactions
browse Neo4j Browser
clear Clear the Database
createNode Nodes
createRel Relationships
cypher Cypher Queries to Data Frames
cypherToList Cypher Queries to Lists
delete Delete Nodes and Relationships
deleteProp Delete Node and Relationship Properties
dijkstra Weighted Shortest Paths
dropConstraint Uniqueness Constraints
dropIndex Indexes
dropLabel Node Labels
endNode Retrieve Nodes from Relationships or Paths
getConstraint Uniqueness Constraints
getID Internal IDs
getIndex Indexes
getLabel Node Labels
getLabeledNodes Retrieve Nodes by Label and Property
getNodes Retrieve Nodes with Cypher Queries
getOrCreateNode Create Unique Node or Retrieve Unique Node
getPaths Retrieve Paths with Cypher Queries
getRels Retrieve Relationships with Cypher Queries
getSingleNode Retrieve Nodes with Cypher Queries
getSinglePath Retrieve Paths with Cypher Queries
getSingleRel Retrieve Relationships with Cypher Queries
getType Relationship Types
getUniqueNode Retrieve Nodes by Label and Property
importSample Import Sample Datasets
incomingRels Retrieve Relationships from Nodes
nodes Retrieve Nodes from Paths
outgoingRels Retrieve Relationships from Nodes
rels Retrieve Relationships from Paths
shortestPath Shortest Paths and Weighted Shortest Paths
startGraph Connect to the Database
startNode Retrieve Nodes from Relationships or Paths
updateProp Update Node and Relationship Properties

addIndex

browse

ブラウズ

> browse(graph)

clear

データベース情報の削除。すべてのノードや関係などを消去する

> graph = startGraph("http://localhost:7474/db/data/", username = "neo4j", password = "<PW>")
> clear(graph)

createNode

ラベルと属性を含んだノードを作成する

> n.hoxo_m     <- createNode(graph, "Member", name = "hoxo_m", role = "Qiita")
> n.r_linux    <- createNode(graph, "Member", name = "R_Linux", role = "総務")
> n.u_ribo     <- createNode(graph, "Member", name = "u_ribo", role = "清掃屋")
> n.teramonagi <- createNode(graph, "Member", list(name = "teramonagi", role = "タワーマンション在住希望"))
> n.zashiki    <- createNode(graph, "Member", list(name = "_zashiki"))
> n.aich_08_   <- createNode(graph, "Member", list(name = "aich_08_", role = "ピンク"))

createRel

> r1 <- createRel(n.hoxo_m, "FOLLOW", n.r_linux, binary = 1)

cypher

> query = " MATCH n RETURN n.name, n.role"
> (f <- cypher(graph, query))

cypherToList

クエリーの実行結果をリストとして返す

> cypherToList(graph, "MATCH n RETURN n.name, n.role")

delete

> # createNode(), createRel()で作成したオブジェクトを削除する
> delete(n.u_ribo)

deleteProp

> deleteProp(n.hoxo_m, all = TRUE)

getID

> getID(n.hoxo_m)

Error in getID(n.hoxo_m): object 'n.hoxo_m' not found

> getID(n.u_ribo)

Error in getID(n.u_ribo): object 'n.u_ribo' not found

importSample

サンプルのデータベースをインポートする

Arguments

  • graph
  • data... tweets, dfw, caltrain, movies
  • input
> importSample(graph, "movies", input = FALSE)

startGraph

データベースへの接続

Arguments

  • url
  • username
  • password
  • opts
> # neo4jを起動している状態で
> graph <- startGraph("http://localhost:7474/db/data/", username = "<username>", password = "<password>")

updateProp

既存のノード情報・関係を更新する

> alice <- createNode(graph, "Person", name = "Alice")
> alice <- updateProp(alice, age = 24, eyes = "green")