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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | 1x 1x 1x 1x 2x 1x 1x 1x 24x 1x 28x 10x 1x 62x 1x 3x 3x 1x 1x 3x 1x 6x 1x 13x 8x 7x 4x 3x 2x 6x 3x 7x 1x 1x 6x 6x 5x 5x 1x 1x 6x 2x 24x 6x 12x 13x 13x 13x 1x 1x 5x 8x 1x 3x 3x 3x 6x 1x | import { ArgType, Values, Keywords } from './types'
const defaultKeywords: Keywords = {
_OR: '$or',
_AND: '$and',
_NOR: '$nor',
_ALL: '$all',
_IN: '$in',
_NIN: '$nin',
_EQ: '$eq',
_NE: '$ne',
_LT: '$lt',
_LTE: '$lte',
_GT: '$gt',
_GTE: '$gte',
// geo queries operators:
_GEO_INTERSECTS: '$geoIntersects',
_GEO_WITHIN: '$geoWithin',
_NEAR: '$near',
_NEAR_SPHERE: '$nearSphere',
// geo shapes operators:
_GEOMETRY: '$geometry',
_BOX: '$box',
_POLYGON: '$polygon',
_CENTER: '$center',
_CENTER_SPHERE: '$centerSphere',
_MAX_DISTANCE: '$maxDistance',
_MIN_DISTANCE: '$minDistance'
}
const defaultValues: Values = {}
const primitives = [
'string',
'number',
'boolean',
'bigint',
'undefined',
'null',
'symbol'
]
export default class GQLMongoQuery {
keywords: Keywords
values: Values
constructor(
Ikeywords: Keywords = defaultKeywords,
Ivalues: Values = defaultValues,
Emerge: boolean = true
) {
this.keywords = merge ? { ...defaultKeywords, ...keywords } : keywords
this.values = merge ? { ...defaultValues, ...values } : values
}
private isOperator(key): boolean {
return Object.keys(this.keywords).includes(key)
}
private isPrimitive(val): boolean {
if (primitives.includes(typeof val)) return true
else return false
}
private isComputable(key): boolean {
return Object.keys(this.values).includes(key)
}
private isNested(obj): boolean {
Iif (typeof obj !== 'object') return false
let isNested = false
for (const k in obj) {
if (!this.isOperator(k) && !this.isPrimitive(obj[k]) && !this.isComputable(k)) {
isNested = true
break
}
}
return isNested
}
private computedValue(args) {
for (const valueKey in this.values) {
if (args[valueKey] !== undefined) {
return this.values[valueKey](args)
}
}
}
private argType(key?, val?): ArgType {
if (this.isOperator(key)) return 'OPERATOR'
else if (this.isComputable(key)) return 'COMPUTED'
else if (this.isPrimitive(val)) return 'PRIMITIVE'
else if ( Array.isArray(val) ) return 'ARRAY'
else if (this.isNested(val)) return 'NESTED'
else Eif (typeof val === 'object') return 'FLAT'
else return null
}
private parseNested(key, val, ElastResult = {}) {
if (this.isComputable(key)) {
return this.buildFilters(val, key)
}
let result = lastResult
for (const k in val) {
let isFinal = false
// COMPUTABLE VALUE
if (this.isComputable(k)) {
result = { ...result, ...this.buildFilters(val[k], k) }
return result
}
// OPERATOR
if (this.isOperator(k)) {
result = { ...result, [key]: this.buildFilters(val, key) }
return result
}
const subkey = key + '.' + k
const subval = val[k]
// subval is COMPUTABLE VALUE
if (this.isComputable(subkey)) {
result = { ...result, ...this.buildFilters(subval, subkey) }
isFinal = true
}
// subval is a PRIMITIVE
else if (this.isPrimitive(subval)) {
result[subkey] = this.buildFilters(subval)
isFinal = true
}
// subval is NESTED
else for (const sk in subval) {
const t = this.argType(sk, subval)
if (t !== 'NESTED' && t !== 'FLAT') {
result[subkey] = this.buildFilters(subval)
isFinal = true
break
}
}
Iif (!isFinal) this.parseNested(subkey, subval, result)
}
return result
}
buildFilters(args, parentKey?) {
// PARENT IS A COMPUTABLE VALUE
if (this.isComputable(parentKey)) {
return this.computedValue({ [parentKey]: args })
}
// NO PARENT AND ARGS IS A DIRECT VALUE
if (!parentKey && this.isPrimitive(args)) {
return args
}
// ELSE, ARGS MUST BE ON OBJECT. LET'S ITERATE:
let filters
for (const key in args) {
if (!filters) filters = {}
const val = args[key]
const t = this.argType(key, val)
// COMPUTED VALUE
if (this.isComputable(key)) {
const computed = this.buildFilters(val, key)
filters = {
...filters, ...computed
}
}
// OPERATOR
else if (t === 'OPERATOR') {
const keyword = this.keywords[key]
if (Array.isArray(val)) {
filters[keyword] = val.map(v => this.buildFilters(v))
}
else {
filters[keyword] = this.buildFilters(val)
}
}
// NESTED QUERY
else if (t === 'NESTED' || t === 'FLAT') {
filters = { ...filters, ...this.parseNested(key, val) }
}
// ARRAY
else if (t === 'ARRAY') {
filters[key] = val.map(v => this.buildFilters(v))
}
// ELSE
else {
filters[key] = this.buildFilters(val)
}
}
return filters
}
}
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