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shared/db/CounterAll.ts

@@ -0,0 +1,40 @@
+import BaseModel from './BaseModel';
+import { index, getModelForClass, prop, DocumentType, ReturnModelType, mongoose } from '@typegoose/typegoose';
+
+/**
+  * 自增 ID
+*/
+@index({ name: 1 })
+export default class CounterAll extends BaseModel {
+
+  @prop({ required: true })
+  name: string;
+
+  @prop({ required: true, default: 1 })
+  seq: number;
+
+  public static async getNewCounter(param:{name: string, def: number}, lean = true) {
+    let {name, def:defaultVal} = param;
+    let counter: CounterType = await CounterAllModal.findOneAndUpdate({ name }, { $inc: { seq: 1 } }, { new: true, upsert: true }).lean(lean);
+    if(!counter || (counter&&counter.seq == 1) && defaultVal != 1) {
+      counter = await CounterAllModal.findOneAndUpdate({ name }, { $set: { seq: defaultVal } }, { new: true, upsert: true }).lean(lean);
+    }
+    return counter?.seq;
+  }
+
+  public static async getCounter(param:{name: string, def: number}, lean = true) {
+    let {name, def:defaultVal} = param;
+    let counter: CounterType = await CounterAllModal.findOne({ name }).lean(lean);
+    return counter?.seq||defaultVal;
+  }
+
+}
+
+export let CounterAllModal: ReturnModelType<typeof CounterAll, {}>;
+export function loadCounterModal(connect: mongoose.Connection) {
+    CounterAllModal = getModelForClass(CounterAll, {
+        existingConnection: connect
+    });
+}
+
+export interface CounterType extends Pick<DocumentType<CounterAll>, keyof CounterAll>{};