connect_nodes: Add an edge to the database

In simplegraphdb: A Simple Graph Database

Description

Add an edge to the database

Usage

connect_nodes(source_id, target_id, properties = list())

Arguments

source_id	Source node's id
target_id	Target node's id
properties	Edge properties (optional)

Value

A SQL statement to insert an edge into the database

Examples

## Not run: 
library(simplegraphdb)
apple <- "apple_test.sqlite"
initialize(apple)
atomic(apple, add_node(list(
  "name" = "Apple Computer Company",
  "type" = c("company", "start-up"),
  "founded" = "April 1, 1976"), 1))
atomic(apple, add_node(list(
  "name" = "Steve Wozniak",
  "type" = c("person", "engineer", "founder")), 2))
atomic(apple, add_node(list(
  "name" = "Steve Jobs",
  "type" = c("person", "designer", "founder")), 3))
atomic(apple, add_node(list(
  "name" = "Ronald Wayne",
  "type" = c("person", "administrator", "founder")), 4))
atomic(apple, add_node(list(
  "name" = "Mike Markkula",
  "type" = c("person", "investor")), 5))

# Add in some edges to the graph
atomic(apple, connect_nodes(2, 1, list("action" = "founded")))
atomic(apple, connect_nodes(3, 1, list("action" = "founded")))
atomic(apple, connect_nodes(4, 1, list("action" = "founded")))
atomic(apple, connect_nodes(5, 1, list(
  "action" = "invested",
  "equity" = 80000,
  "debt" = 170000)))
atomic(apple, connect_nodes(1, 4, list(
  "action" = "divested",
  "amount" = 800,
  "date" = "April 12, 1976")))
atomic(apple, connect_nodes(2, 3))

## End(Not run)

simplegraphdb documentation built on March 12, 2021, 5:05 p.m.