A WIP simple database library written in Go
This is more like a research project around an idea I had of making queries on a simple using callbacks than a serious simple database ready for production use.
You can load data in the graph by usin JSON or YAML data in "triples" format or a more advanced "extended" format:
go get -u github.com/sayden/groph
TODO
An example YAML simple format file:
- vertex: start
edge: goes to
d_vertex: B
- vertex: A
edge: goes to
d_vertex: finish
- vertex: A
edge: goes to
d_vertex: B
- vertex: B
edge: goes to
d_vertex: finish
- vertex: B
edge: goes to
d_vertex: A
- vertex: finish
edge: goes to
d_vertex: start
As you can see you just have to declare the source vertex, the destination vertex and an ID for the edge that connects them.
The JSON equivalent file would be like this:
[
{ "vertex": "start", "edge": "goes to", "d_vertex": "B" },
{ "vertex": "A", "edge": "goes to", "d_vertex": "finish" },
{ "vertex": "A", "edge": "goes to", "d_vertex": "B" },
{ "vertex": "B", "edge": "goes to", "d_vertex": "finish" },
{ "vertex": "B", "edge": "goes to", "d_vertex": "A" },
{ "vertex": "finish", "edge": "goes to", "d_vertex": "start" }
]
In the case of the extended format:
- vertex:
id: start
data:
description: starting point
edge:
id: goes to
data:
description: data in some edge
weight: 52.3
d_vertex:
id: A
- vertex:
id: A
edge:
id: goes to
weight: 52.3
d_vertex:
id: finish
- vertex:
id: A
edge:
id: goes to
d_vertex:
id: B
- vertex:
id: B
edge:
id: goes to
d_vertex:
id: A
- vertex:
id: B
edge:
id: goes to
weight: 52.3
d_vertex:
id: finish
In the extended format each vertex and edge can contain a "data" key with any value that you can consider inside. In this case the ID field is mandatory on each node of the YAML / JSON.
And the JSON equivalent:
[
{
"vertex": { "id": "start", "data":{ "description":"starting point" } },
"edge": { "id": "goes to", "data":{ "description":"data in some edge" }, "weight":52.3 },
"d_vertex":{ "id": "A" }
},
{
"vertex": { "id": "A" },
"edge": { "id": "goes to", "weight":52.3 },
"d_vertex":{ "id": "finish"}
},
{
"vertex": { "id": "A" },
"edge": { "id": "goes to" },
"d_vertex":{ "id": "B"}
},
{
"vertex": { "id": "B" },
"edge": { "id": "goes to" },
"d_vertex":{ "id": "A"}
},
{
"vertex": { "id": "B" },
"edge": { "id": "goes to", "weight":52.3 },
"d_vertex":{ "id": "finish"}
}
]
If you want a rock-solid simple database written in Go check Cayley