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const {
CURRENT_VERSION,
FULL_VERSION
} = require('../constants')
const {
LayerFields
} = require('../helpers/fields')
class TableLayerMetadata {
static create (geojson = {}, options = {}) {
const {
geojson: normalizedGeojson,
options: normalizedOptions
} = TableLayerMetadata.normalizeInput(geojson, options)
const tableMetadata = new TableLayerMetadata()
return tableMetadata.mixinOverrides(normalizedGeojson, normalizedOptions)
}
static normalizeInput (geojson, req) {
const {
metadata = {},
capabilities,
...normalizedGeojson
} = geojson
const {
params: {
layer: layerId
} = {},
query = {}
} = req
const {
currentVersion,
fullVersion,
description
} = _.get(req, 'app.locals.config.featureServer', {})
const normalizedOptions = _.pickBy({
currentVersion,
fullVersion,
description,
layerId,
...query,
...metadata,
capabilities: normalizeCapabilities(capabilities, metadata.capabilities)
}, (value) => value)
Iif (!normalizedGeojson.features) {
normalizedGeojson.features = []
}
return {
geojson: normalizedGeojson,
options: normalizedOptions
}
}
constructor () {
Object.assign(this, {
id: 0,
name: 'Not Set',
type: 'Table',
description: 'This is a feature service powered by https://github.com/featureserver/featureserver',
copyrightText: ' ',
parentLayer: null,
subLayers: null,
defaultVisibility: true,
hasAttachments: false,
htmlPopupType: 'esriServerHTMLPopupTypeNone',
displayField: 'OBJECTID',
typeIdField: null,
fields: [],
relationships: [],
capabilities: 'Query',
maxRecordCount: 2000,
supportsStatistics: true,
supportsAdvancedQueries: true,
supportedQueryFormats: 'JSON',
ownershipBasedAccessControlForFeatures: {
allowOthersToQuery: true
},
useStandardizedQueries: true,
advancedQueryCapabilities: {
useStandardizedQueries: true,
supportsStatistics: true,
supportsOrderBy: true,
supportsDistinct: true,
supportsPagination: true,
supportsTrueCurve: false,
supportsReturningQueryExtent: true,
supportsQueryWithDistance: true
},
canModifyLayer: false,
dateFieldsTimeReference: null,
isDataVersioned: false,
supportsRollbackOnFailureParameter: true,
hasM: false,
hasZ: false,
allowGeometryUpdates: true,
objectIdField: 'OBJECTID',
globalIdField: '',
types: [],
templates: [],
hasStaticData: false,
timeInfo: {},
uniqueIdField: {
name: 'OBJECTID',
isSystemMaintained: true
},
currentVersion: CURRENT_VERSION,
fullVersion: FULL_VERSION
})
}
mixinOverrides (geojson = {}, options = {}) {
const {
id,
idField,
displayField,
capabilities,
layerId,
hasStaticData,
supportsPagination,
hasAttachments
} = options
this._setFields(geojson, options)
this._setId(layerId, id)
this._setDisplayField(displayField, idField)
this._setHasStaticData(hasStaticData)
this._setCapabilities(capabilities)
this._setUniqueIdField(idField)
this._setPagination(supportsPagination)
this._setDirectOverrides(options)
this._setHasAttachments(hasAttachments)
return this
}
_setFields (data, options) {
const fields = LayerFields.create({ ...data, ...options })
Eif (fields) {
this.fields = fields
}
}
_setId (layerId, metadataId) {
const requestPathLayerId = parseInt(layerId)
const id = !isNaN(requestPathLayerId) ? requestPathLayerId : metadataId
if (id) {
this.id = id
}
}
_setDisplayField (displayField, idField) {
const overrideDisplayField = displayField || idField
if (overrideDisplayField) {
this.displayField = overrideDisplayField
}
}
_setHasStaticData (hasStaticData) {
if (typeof hasStaticData === 'boolean') {
this.hasStaticData = hasStaticData
}
}
_setCapabilities (capabilities) {
if (!capabilities) {
return
}
if (capabilities.list) {
this.capabilities = capabilities.list
return
}
if (_.has(capabilities, 'extract') && !this.capabilities.includes('Extract')) {
this.capabilities = `${this.capabilities},Extract`
}
}
_setUniqueIdField (idField) {
if (idField) {
this.uniqueIdField.name = idField
}
}
_setPagination (supportsPagination) {
if (typeof supportsPagination === 'boolean') {
this.advancedQueryCapabilities.supportsPagination = supportsPagination
}
}
_setHasAttachments (hasAttachments) {
if (hasAttachments != null && typeof hasAttachments === 'boolean') {
this.hasAttachments = hasAttachments
}
}
_setDirectOverrides (options) {
const {
name,
relationships,
description,
copyrightText,
templates,
idField,
timeInfo,
maxRecordCount,
defaultVisibility,
currentVersion,
fullVersion
} = options
_.merge(this, {
name,
relationships,
description,
copyrightText,
templates,
objectIdField: idField,
timeInfo,
maxRecordCount,
defaultVisibility,
currentVersion,
fullVersion
})
}
}
function normalizeCapabilities (capabilities, metadataCapabilites) {
if (_.isString(metadataCapabilites)) {
return {
...capabilities,
list: metadataCapabilites
}
}
return {
...(metadataCapabilites || {}),
...capabilities
}
}
module.exports = TableLayerMetadata
|