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Add field schema to metadata and guarantee required fields #18

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Add field schema to metadata and guarantee required fields #18

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53 changes: 46 additions & 7 deletions src/model.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,28 +12,36 @@ const geometryTypes = [
'MultiPolygon'
]

function Model(koop) {}
function Model(koop) { }

Model.prototype.getData = function(req, callback) {
Model.prototype.getData = function (req, callback) {
const layerName = req.params.id
const host = req.params.host
const qs = Object.assign({}, config.archesHosts[host].layers[layerName])
const geometryType = qs.type || geometryTypes[req.params.layer]
let propertyMap = null
let propertyMap = {}
if (qs.properties) {
propertyMap = qs.properties
delete qs.properties
}
qs.type = geometryType


//required fields
let requiredFields = ["resourceinstanceid", "nodeid", "tileid"]
for (requiredField in requiredFields) {
let fieldname = requiredFields[requiredField]
propertyMap[fieldname] = fieldname
}

request({
url: `${config.archesHosts[host].url}/geojson`,
qs: qs
}, (err, res, geojson) => {
if (err) return callback(err)
geojson.features.forEach(function(feature) {

geojson.features.forEach(function (feature) {
if (qs.nodeid) feature.properties.nodeid = qs.nodeid

if (propertyMap) {
let properties = {}
for (let incomingKey in propertyMap) {
Expand All @@ -54,12 +62,43 @@ Model.prototype.getData = function(req, callback) {

geojson.ttl = config.cacheTimeout

fieldset = []

fieldset.push({
"name": "OBJECTID",
"type": "esriFieldTypeOID",
"alias": "OBJECTID",
"sqlType": "sqlTypeInteger",
"domain": null,
"defaultValue": null,
"editable": false,
"nullable": false
})

if (propertyMap) {
for (property in propertyMap) {
fieldset.push({
"name": propertyMap[property],
"type": "esriFieldTypeString",
"alias": propertyMap[property],
"sqlType": "sqlTypeOther",
"domain": null,
"defaultValue": null,
"length": 128,
"editable": false,
"nullable": false
})
}
}


geojson.metadata = {
name: layerName,
displayField: qs.displayField,
title: 'Koop Arches Provider',
geometryType: geometryType,
idField: 'OBJECTID'
idField: 'OBJECTID',
fields: fieldset
}

callback(null, geojson)
Expand Down