73 lines
1.7 KiB
JavaScript
73 lines
1.7 KiB
JavaScript
export default class interrelated {
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constructor() {
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this.A的集合 = new Map()
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this.B的集合 = new Map()
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}
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关联数据(A, B) {
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let value = this.A的集合.get(A) || new Map()
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if (!value.size) this.A的集合.set(A, value)
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value.set(B, true)
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let valux = this.B的集合.get(B) || new Map()
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if (!valux.size) this.B的集合.set(B, valux)
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valux.set(A, true)
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}
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取消关联(A, B) {
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let value = this.A的集合.get(A)
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if (value && value.size) value.delete(B)
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if (value && value.size === 0) this.A的集合.delete(A)
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let valux = this.B的集合.get(B)
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if (valux && valux.size) valux.delete(A)
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if (valux && valux.size === 0) this.B的集合.delete(B)
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}
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A中取B(A, callback) {
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let value = this.A的集合.get(A)
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if (value && value.size) {
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value.forEach((value, B) => callback(B))
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}
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}
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B中取A(B, callback) {
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let valux = this.B的集合.get(B)
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if (valux && valux.size) {
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valux.forEach((value, A) => callback(A))
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}
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}
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A中除B(B) {
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let value = this.B的集合.get(B)
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if (value && value.size) value.forEach((value, A) => {
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let valux = this.A的集合.get(A)
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if (valux && valux.size) valux.delete(B)
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})
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this.B的集合.delete(B)
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}
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B中除A(A) {
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let value = this.A的集合.get(A)
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if (value && value.size) value.forEach((value, B) => {
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let valux = this.B的集合.get(B)
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if (valux && valux.size) valux.delete(A)
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})
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this.A的集合.delete(A)
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}
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// 读取所有 a
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// aall(uid, callback) {
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// this.channels.forEach((value, key) => {
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// callback(key)
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// })
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// }
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//
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// 读取所有 b
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// ball(fid, callback) {
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// this.users.forEach((value, key) => {
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// callback(key)
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// })
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// }
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}
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