用Guice实现参数化工厂
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我有一个我想使用Guice重新实现的工厂：
enum MyObjects { OBJECT1, OBJECT2, ... }
class Object1 implements SomeInterface { ... }
class Object2 implements SomeInterface { ... }
...
class Factory {
public static SomeInterface createObject(MyObjects obj) {
switch (obj) {
case OBJECT1: return new Object1();
case OBJECT2: return new Object2();
...
}
}
没有找到相关结果
已邀请:
2 个回复
室邢
public @interface SomeInterfaceKind { MyObjects value(); }中：bind(SomeInterface.class) .annotatedWith(new SomeInterfaceKindImpl(MyObjects1.OBJECT1) .to(Object1.class); ...@Inject void setSomeInterface( @SomeInterfaceKind(MyObjects.OBJECT1) SomeInterface object) {...}的类（是的，可以扩展注释！）有关更多详细信息，请看一下如何在Guice中实现。 2.您还可以按以下方式使用Guice MapBinder（我发现它更易于实现） 在您的模块中：MapBinder.newMapBinder(MyObjects.class, SomeInterface.class) .addBinding(MyObjects.OBJECT1).to(Object1.class); MapBinder.newMapBinder(MyObjects.class, SomeInterface.class) .addBinding(MyObjects.OBJECT2).to(Object2.class);@Inject void setSomeInterface(Map<MyObjects, SomeInterface> map) { SomeInterface object1 = map.get(MyObjects.OBJECT1); ... }席酱
public interface Factory { public Object1 createObject1(String param1); public Object2 createObject2(Date param2); } public class Object1 { @AssistedInject public Object1(String param1) { // do something } } public class Object2 { @AssistedInject public Object2(Dateparam2) { // do something } }install(new FactoryModuleBuilder() .implement(Object1.class, Object1.class) .implement(Object2.class, Object2.class) .build(Factory.class));