File size: 2,772 Bytes
ae4627d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | var test = require('tape')
var fdstore = require('fd-chunk-store')
var hyperkdb = require('../')
var kdbtree = require('kdb-tree-store')
var memdb = require('memdb')
var path = require('path')
var xtend = require('xtend')
var hyperlog = require('hyperlog')
var log = hyperlog(memdb(), { valueEncoding: 'json' })
var file = path.join(require('os').tmpdir(), 'kdb-tree-' + Math.random())
test('points', function (t) {
t.plan(8)
var kdb = hyperkdb({
log: log,
db: memdb(),
types: [ 'float', 'float' ],
kdbtree: kdbtree,
store: fdstore(256, file),
map: function (row, next) {
if (row.value.type === 'remove' && row.value.points) {
next(null, { type: 'del', points: row.value.points })
} else if (row.value.type === 'remove') {
next(null, { type: 'del', point: [ row.value.lat, row.value.lon ] })
} else if (row.value.type === 'point') {
next(null, { type: 'put', point: [ row.value.lat, row.value.lon ] })
} else if (row.value.type === 'way') {
next(null, { type: 'put', points: row.value.points })
}
}
})
var docs = {
A: { v: { type: 'point', lat: 64, lon: -147 } },
B: { v: { type: 'point', lat: 63, lon: -145 } },
C: { v: { type: 'point', lat: 65, lon: -149 } },
D: { v: { type: 'way', points: [ 'A', 'B', 'C' ] } }
}
var keys = Object.keys(docs).sort()
var nodes = {}, knodes = {}
;(function advance () {
if (keys.length === 0) return ready()
var key = keys.shift()
var doc = docs[key]
var ln = (doc.links || []).map(function (k) { return nodes[k].key })
if (doc.v.points) doc.v.points = doc.v.points.map(function (p) {
return [docs[p].v.lat,docs[p].v.lon]
})
log.add(ln, doc.v, function (err, node) {
t.ifError(err)
nodes[key] = node
knodes[node.key] = node
advance()
})
})()
function ready () {
var q0 = [[63.5,65.1],[-150,-147.5]]
kdb.query(q0, function (err, pts) {
t.ifError(err)
t.deepEqual(pts.sort(cmp), [
{ point: [ 65, -149 ], value: Buffer(nodes.C.key, 'hex') },
{ point: [ 65, -149 ], value: Buffer(nodes.D.key, 'hex') }
].sort(cmp))
})
var q1 = [[63.5,65.4],[-150,-142]]
kdb.query(q1, function (err, pts) {
t.ifError(err)
t.deepEqual(pts.sort(cmp), [
{ point: [ 65, -149 ], value: Buffer(nodes.C.key, 'hex') },
{ point: [ 65, -149 ], value: Buffer(nodes.D.key, 'hex') },
{ point: [ 64, -147 ], value: Buffer(nodes.A.key, 'hex') },
{ point: [ 64, -147 ], value: Buffer(nodes.D.key, 'hex') }
].sort(cmp))
})
}
})
function cmp (a, b) {
var n = Buffer.compare(a.value, b.value)
if (n !== 0) return n
return a.point.join(',') < b.point.join(',') ? -1 : 1
}
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