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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 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | 7x 7x 7x 64x 64x 64x 64x 64x 8x 56x 45x 11x 64x 64x 64x 10x 2x 10x 2x 10x 1x 10x 64x 64x 64x 64x 64x 64x 64x 64x 53x 11x 1x 10x 7x 3x 3x 11x 20x 3x 17x 11x 11x 11x 1687x 7x | const _ = require('lodash') const { query } = require('winnow') const helpers = require('../helpers') function filterAndTransform (json, requestParams) { const { features, type, ...restJson } = json const params = FilterAndTransformParams.create(requestParams) .removeParamsAlreadyApplied(json.filtersApplied) .addToEsri() .addInputCrs(json) .normalizeObjectIds() const result = query(json, params) const { objectIds, outStatistics } = params if (outStatistics) { return { statistics: result, ...restJson } } if (!objectIds) { return result } return { ...result, features: filterByObjectIds(result, objectIds) } } class FilterAndTransformParams { static create (requestParams) { return new FilterAndTransformParams(requestParams) } constructor (requestParams) { Object.assign(this, requestParams) } removeParamsAlreadyApplied (alreadyApplied) { for (const key in alreadyApplied) { if (key === 'projection') { delete this.outSR } if (key === 'offset') { delete this.resultOffset } if (key === 'limit') { delete this.resultRecordCount } delete this[key] } return this } addToEsri () { this.toEsri = this.f !== 'geojson' && !this.returnExtentOnly return this } addInputCrs (data = {}) { const { metadata = {} } = data this.inputCrs = this.inputCrs || this.sourceSR || metadata.crs || helpers.getCollectionCrs(data) || 4326 delete this.sourceSR return this } normalizeObjectIds () { if (!this.objectIds) { return this } let ids if (Array.isArray(this.objectIds)) { ids = this.objectIds } else if (typeof this.objectIds === 'string') { ids = this.objectIds.split(',') } else Eif (typeof this.objectIds === 'number') { ids = [this.objectIds] } else { const error = new Error('Invalid "objectIds" parameter.') error.code = 400 throw error } this.objectIds = ids.map(i => { if (isNaN(i)) { return i } return parseInt(i) }) return this } } function filterByObjectIds (data, objectIds) { const idField = _.get(data, 'metadata.idField') || 'OBJECTID' return data.features.filter(({ attributes = {}, properties = {} }) => { return objectIds.includes(attributes[idField]) || objectIds.includes(properties[idField]) }) } module.exports = { filterAndTransform } |