Dependency injection 反循环单态注入
我试着用两个单身汉,让他们可以这样互相打电话Dependency injection 反循环单态注入,dependency-injection,singleton,inversifyjs,Dependency Injection,Singleton,Inversifyjs,我试着用两个单身汉,让他们可以这样互相打电话 import 'reflect-metadata'; import { Container, inject, injectable } from 'inversify'; let container = new Container(); @injectable() class Dom { private domUi: DomUi; constructor (domUi: DomUi) { this.domUi = domUi;
import 'reflect-metadata';
import { Container, inject, injectable } from 'inversify';
let container = new Container();
@injectable()
class Dom {
private domUi: DomUi;
constructor (domUi: DomUi) {
this.domUi = domUi;
}
}
@injectable()
class DomUi {
private dom: Dom;
constructor (dom: Dom) {
this.dom = dom;
}
}
@injectable()
class Test {
constructor (dom: Dom) {
console.log(dom);
}
}
container.bind<Dom>(Dom).toSelf().inSingletonScope();
container.bind<DomUi>(DomUi).toSelf().inSingletonScope();
const test = container.resolve(Test);
如何解决这个问题?我尝试了@inject
和@multiInject
,但没有成功有没有更好的方法从设计模式的角度来考虑这个问题?我认为您发现了一个bug,您可以使用以下方法作为解决方法:
import "reflect-metadata";
import { Container, inject, injectable } from "inversify";
import getDecorators from "inversify-inject-decorators";
let container = new Container();
let { lazyInject } = getDecorators(container);
@injectable()
class DomUi {
private _dom: Dom;
public constructor (dom: Dom) {
this._dom = dom;
}
}
@injectable()
class Dom {
@lazyInject(DomUi) private domUi: DomUi;
}
@injectable()
class Test {
constructor(dom: Dom) {
console.log(dom);
}
}
container.bind<Dom>(Dom).toSelf().inSingletonScope();
container.bind<DomUi>(DomUi).toSelf().inSingletonScope();
const dom = container.resolve(Test);
导入“反映元数据”;
从“inversify”导入{Container,inject,injectable};
从“inversify inject decorators”导入getDecorators;
让容器=新容器();
让{lazyInject}=getDecorators(容器);
@可注射()
类DomUi{
私有:dom;
公共构造函数(dom:dom){
这个。_dom=dom;
}
}
@可注射()
类Dom{
@lazyInject(DomUi)私有DomUi:DomUi;
}
@可注射()
课堂测试{
构造函数(dom:dom){
console.log(dom);
}
}
container.bind(Dom.toSelf().inSingletonScope();
container.bind(DomUi.toSelf().inSingletonScope();
const dom=container.resolve(测试);
建议使用符号而不是类作为ID:
import "reflect-metadata";
import { Container, inject, injectable } from "inversify";
import getDecorators from "inversify-inject-decorators";
let container = new Container();
let { lazyInject } = getDecorators(container);
const TYPE = {
Dom: Symbol("Dom"),
DomUi: Symbol("DomUi"),
Test: Symbol("Test")
};
interface Dom {}
interface DomUi {}
interface Test {}
@injectable()
class DomUi {
public dom: Dom;
public constructor (
@inject(TYPE.Dom) d: Dom
) {
this.dom = d;
}
}
@injectable()
class Dom {
@lazyInject(TYPE.DomUi) public domUi: DomUi;
}
@injectable()
class Test {
constructor(
@inject(TYPE.Dom) d: Dom
) {
console.log(d, d.domUi.dom);
}
}
container.bind<Dom>(TYPE.Dom).to(Dom).inSingletonScope();
container.bind<DomUi>(TYPE.DomUi).to(DomUi).inSingletonScope();
container.bind<Test>(TYPE.Test).to(Test);
const dom = container.get(TYPE.Test);
导入“反映元数据”;
从“inversify”导入{Container,inject,injectable};
从“inversify inject decorators”导入getDecorators;
让容器=新容器();
让{lazyInject}=getDecorators(容器);
常量类型={
Dom:Symbol(“Dom”),
DomUi:Symbol(“DomUi”),
测试:符号(“测试”)
};
接口Dom{}
接口DomUi{}
接口测试{}
@可注射()
类DomUi{
公共dom:dom;
公共构造函数(
@注入(TYPE.Dom)d:Dom
) {
this.dom=d;
}
}
@可注射()
类Dom{
@lazyInject(TYPE.DomUi)公共DomUi:DomUi;
}
@可注射()
课堂测试{
建造师(
@注入(TYPE.Dom)d:Dom
) {
log(d,d.domUi.dom);
}
}
bind(TYPE.Dom).to(Dom.inSingletonScope();
bind(TYPE.DomUi).to(DomUi.inSingletonScope();
容器。绑定(型式试验)。至(试验);
const dom=container.get(TYPE.Test);
我认为您发现了一个bug,您可以使用以下解决方法:
import "reflect-metadata";
import { Container, inject, injectable } from "inversify";
import getDecorators from "inversify-inject-decorators";
let container = new Container();
let { lazyInject } = getDecorators(container);
@injectable()
class DomUi {
private _dom: Dom;
public constructor (dom: Dom) {
this._dom = dom;
}
}
@injectable()
class Dom {
@lazyInject(DomUi) private domUi: DomUi;
}
@injectable()
class Test {
constructor(dom: Dom) {
console.log(dom);
}
}
container.bind<Dom>(Dom).toSelf().inSingletonScope();
container.bind<DomUi>(DomUi).toSelf().inSingletonScope();
const dom = container.resolve(Test);
导入“反映元数据”;
从“inversify”导入{Container,inject,injectable};
从“inversify inject decorators”导入getDecorators;
让容器=新容器();
让{lazyInject}=getDecorators(容器);
@可注射()
类DomUi{
私有:dom;
公共构造函数(dom:dom){
这个。_dom=dom;
}
}
@可注射()
类Dom{
@lazyInject(DomUi)私有DomUi:DomUi;
}
@可注射()
课堂测试{
构造函数(dom:dom){
console.log(dom);
}
}
container.bind(Dom.toSelf().inSingletonScope();
container.bind(DomUi.toSelf().inSingletonScope();
const dom=container.resolve(测试);
建议使用符号而不是类作为ID:
import "reflect-metadata";
import { Container, inject, injectable } from "inversify";
import getDecorators from "inversify-inject-decorators";
let container = new Container();
let { lazyInject } = getDecorators(container);
const TYPE = {
Dom: Symbol("Dom"),
DomUi: Symbol("DomUi"),
Test: Symbol("Test")
};
interface Dom {}
interface DomUi {}
interface Test {}
@injectable()
class DomUi {
public dom: Dom;
public constructor (
@inject(TYPE.Dom) d: Dom
) {
this.dom = d;
}
}
@injectable()
class Dom {
@lazyInject(TYPE.DomUi) public domUi: DomUi;
}
@injectable()
class Test {
constructor(
@inject(TYPE.Dom) d: Dom
) {
console.log(d, d.domUi.dom);
}
}
container.bind<Dom>(TYPE.Dom).to(Dom).inSingletonScope();
container.bind<DomUi>(TYPE.DomUi).to(DomUi).inSingletonScope();
container.bind<Test>(TYPE.Test).to(Test);
const dom = container.get(TYPE.Test);
导入“反映元数据”;
从“inversify”导入{Container,inject,injectable};
从“inversify inject decorators”导入getDecorators;
让容器=新容器();
让{lazyInject}=getDecorators(容器);
常量类型={
Dom:Symbol(“Dom”),
DomUi:Symbol(“DomUi”),
测试:符号(“测试”)
};
接口Dom{}
接口DomUi{}
接口测试{}
@可注射()
类DomUi{
公共dom:dom;
公共构造函数(
@注入(TYPE.Dom)d:Dom
) {
this.dom=d;
}
}
@可注射()
类Dom{
@lazyInject(TYPE.DomUi)公共DomUi:DomUi;
}
@可注射()
课堂测试{
建造师(
@注入(TYPE.Dom)d:Dom
) {
log(d,d.domUi.dom);
}
}
bind(TYPE.Dom).to(Dom.inSingletonScope();
bind(TYPE.DomUi).to(DomUi.inSingletonScope();
容器。绑定(型式试验)。至(试验);
const dom=container.get(TYPE.Test);
谢谢,您的解决方案工作正常!这是一个人为的再现性示例,但我将在实际项目中使用符号。我在GitHub上创建了一个问题来跟踪此错误。谢谢,您的解决方案工作正常!这是一个人为的再现性示例,但我将在实际项目中使用符号。我在GitHub上创建了一个问题来跟踪这个bug