我已经写了一个能够创建任何类型的ListEditor的工厂:
public interface ListEditorFactory<T, E extends Editor<T>> {
ListEditor<T, E> create(InsertPanel panel);
}
及其实施:
public class ListEditorFactoryImpl<T, E extends Editor<T> & IsWidget> implements ListEditorFactory<T, E> {
private final Provider<E> editorProvider;
@Inject
public ListEditorFactoryImpl(Provider<E> editorProvider) {
this.editorProvider = editorProvider;
}
@Override
public ListEditor<T, E> create(final InsertPanel panel) {
return ListEditor.of(new EditorSource<E>() {
@Override
public E create(int index) {
final E e = editorProvider.get();
panel.add(e.asWidget());
return e;
}
@Override
public void dispose(E e) {
e.asWidget().removeFromParent();
}
@Override
public void setIndex(E editor, int index) {
panel.insert(editor.asWidget(), index);
}
});
}
}
如果我直接使用Gin注入的Provider实例化工厂,那么它非常有效:
ListEditor<NoteDTO, CharacterNoteScreen> notesEditor;
@Inject @UiField(provided = true) FlowPanel notePanel;
@Inject
protected void init(Provider<CharacterNoteScreen> characterNoteProvider) {
final ListEditorFactory<NoteDTO, CharacterNoteScreen> listEditorFactory = new ListEditorFactoryImpl<NoteDTO, CharacterNoteScreen>(characterNoteProvider);
notesEditor = listEditorFactory.create(notePanel);
但是如果我想像这样注入整个ListEditorFactory:
@Inject
protected void init(ListEditorFactory<NoteDTO, CharacterNoteScreen> listEditorFactory) {
notesEditor = listEditorFactory.create(notePanel);
Gin抱怨简单的bind(ListEditorFactory.class).to(ListEditorFactoryImpl.class);
绑定:
[ERROR] Generator 'com.google.gwt.inject.rebind.GinjectorGenerator' threw an exception while rebinding 'net.test.client.MyGinjector'
com.google.inject.ConfigurationException: Guice configuration errors:
1) javax.inject.Provider<E> cannot be used as a key; It is not fully specified.
我尝试了bind(new TypeLiteral<ListEditorFactory<?, ?>>() {}).to(new TypeLiteral<ListEditorFactoryImpl<?, ?>>() {});
,但得到了
java.lang.IllegalArgumentException: Expected a Class, ParameterizedType, or GenericArrayType, but <?> is of type com.google.inject.internal.MoreTypes$WildcardTypeImpl
绑定bind(new TypeLiteral<ListEditorFactory<NoteDTO, CharacterNoteScreen>>() {}).to(new TypeLiteral<ListEditorFactoryImpl<NoteDTO, CharacterNoteScreen>>() {});
正在运行,但通用工厂失去了很多兴趣。
您是否知道声明此绑定的通用方法?
由于
答案 0 :(得分:1)
我设法通过摆脱ListEditorFactory
接口找到解决方案,不再需要在gin模块中声明绑定。
我可以直接注入实现而没有任何问题:
@Inject
protected void init(ListEditorFactoryImpl<NoteDTO, CharacterNoteScreen> listEditorFactory) {
notesEditor = listEditorFactory.create(notePanel);
如果杜松子酒能够注入这个,我认为没有理由它不能通过接口注入它但是错误的绑定声明。
所以,即使我对我的解决方案感到满意,我也要打开这个问题,因为这可能是宣告绑定的一种方式。