我正在学习使用AEM6的新功能之一 - Sling Models。我已经按照here
描述的步骤获取了节点的属性@Model(adaptables = Resource.class)
public class UserInfo {
@Inject @Named("jcr:title")
private String title;
@Inject @Default(values = "xyz")
private String firstName;
@Inject @Default(values = "xyz")
private String lastName;
@Inject @Default(values = "xyz")
private String city;
@Inject @Default(values = "aem")
private String technology;
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getTechnology() {
return technology;
}
public String getTitle() {
return title;
}
}
并从资源中调整它
UserInfo userInfo = resource.adaptTo(UserInfo.class);
现在我的层次结构为 -
+ UserInfo (firstName, lastName, technology)
|
+ UserAddress (houseNo, locality, city, state)
现在我想获取UserAddress
。
我从文档页面得到了一些提示,例如 -
如果注入的对象与所需的类型不匹配,并且对象实现了Adaptable接口,则Sling Models将尝试对其进行调整。这提供了创建丰富对象图的能力。例如:
@Model(adaptables = Resource.class)
public interface MyModel {
@Inject
ImageModel getImage();
}
@Model(adaptables = Resource.class)
public interface ImageModel {
@Inject
String getPath();
}
当资源适应
MyModel
时,名为image的子资源会自动适应ImageModel
的实例。
但我不知道如何在我自己的课程中实现它。请帮帮我。
答案 0 :(得分:4)
听起来你需要一个单独的类来UserAddress
包装houseNo
,city
,state
和locality
属性。
+ UserInfo (firstName, lastName, technology)
|
+ UserAddress (houseNo, locality, city, state)
只需反映您在Sling Models中列出的结构。
创建UserAddress
模型:
@Model(adaptables = Resource.class)
public class UserAddress {
@Inject
private String houseNo;
@Inject
private String locality;
@Inject
private String city;
@Inject
private String state;
//getters
}
然后可以在UserInfo
类中使用此模型:
@Model(adaptables = Resource.class)
public class UserInfo {
/*
* This assumes the hierarchy you described is
* mirrored in the content structure.
* The resource you're adapting to UserInfo
* is expected to have a child resource named
* userAddress. The @Named annotation should
* also work here if you need it for some reason.
*/
@Inject
@Optional
private UserAddress userAddress;
public UserAddress getUserAddress() {
return this.userAddress;
}
//simple properties (Strings and built-in types) omitted for brevity
}
您可以使用默认值和可选字段的附加注释来调整行为,但这是一般的想法。
一般来说,只要找到合适的适应性,Sling Models就应该能够处理另一个模型的注入。在这种情况下,它是另一个Sling模型,但我已经使用基于适配器工厂的遗留类来完成它。