Any information exchanged as part of those requests (e.g., parameters) is represented by an instance of an IO Entity class.
任何作为那些请求一部分的交换的信息(例如，参数)都由一个IO实体类的实例表示。
I'll start by creating a base class that holds an instance of an Entity object.
我将首先创建一个基类，用于容纳entity对象的一个实例。
The key to the dependency-injection approach is that you query data by injecting the Class of the entity that the DAO will be querying, along with defining the generic type.
依赖项注入方式的关键是，在查询数据时，要注入DAO将查询的实体的Class并定义泛型类型。
How does this entity class tie in with a database?
这个实体类如何与数据库联系起来？
The auto mapping feature USES a set of conventions to automatically map all entities, not requesting a mapping class per entity.
自动映射特性使用一套规则来自动映射所有实体，并非每个实体都需要映射类。
Listing 1 shows a simple EJB3 entity class called GreetingCard.
清单1展示了一个简单的EJB3实体类，称为GreetingCard。
Using the special attribute override, you can map the fields of the embeddable class within the entity.
使用特殊的属性覆盖，可以将可嵌入类的字段映射到实体中。
Using one data entity per concrete class.
每个具体类使用一个数据实体。
A loader bean is added to the objectgrid.xml along with the necessary entity class names.
加载器bean可以与必要的实体类名一起被加入到objectgrid .xml中。
For better readability, the relationships in our scenario are expressed through object or relational metadata specified directly in the entity class files.
为了提高可读性，通过在实体类文件中直接指定的对象或关系元数据表达场景中的关系。
Select the Book entity from the class diagram.
从类图中选择book实体。
Using one data entity for an entire class hierarchy.
整个类层次结构使用一个数据实体。
Figure 6 presents the updated persistence model for mapping the entire class hierarchy into one data entity.
图6显示了一个更新过的持久性模型，用于将整个类层次结构映射成一个数据实体。
Figure 8 presents the solution for the third mapping strategy — mapping a single class to a single data entity.
图8显示了第三种映射策略的解决方案——将单个类映射成单个数据实体。
Figure 7 presents the persistence model when each concrete class is mapped to a data entity.
图7显示了将每个具体类映射成数据实体时的持久性模型。
Instead, you can use the Hibernate Validator annotations to assign validation criteria to the properties of your entity class, as shown in Listing 13.
取而代之，可以使用HibernateValidator注释向实体类属性指派验证标准，如清单13所示。
The Apache Wink run time USES the asset class to construct the actual response entity by calling the corresponding method of the asset class.
ApacheWink运行时通过调用资产类对应的方法构建实际的响应实体。
The Subject class is used to encapsulate the credentials of an authenticated entity such as a user.
subject类被用于封装一个被认证实体(比如用户)的凭证。
Furthermore, I'd be tempted to simply consider the entire hierarchy as one entity for now, since the remaining class, Country, only adds one contract, and frankly it's not all that exciting.
而且，现在我会倾向于把整个层次结构简单地看作一个实体，因为剩余的类Country仅仅添加了一个契约，坦白地说它并不是那样令人兴奋。
The following procedure shows how to validate when an attempt is made to update a complete entity class.
下面的过程演示在尝试更新完整实体类时如何进行验证。
Specifies the base class of the entity classes in the generated code.
为生成的代码中的实体类指定基类。
This is done to more accurately represent the fact that the instantiated entity class maps to a single record of data.
这样可以更准确地表示实例化的实体类映射到单个数据记录的事实。
With this approach each data entity includes both the attributes and the inherited attributes of the class that it represents.
使用这种方法，每个数据实体就既包含属性又包含它所表示的类继承的属性。
To find an individual entity by its key, you simply invoke the get method, which takes a class type and the key.
为根据键找到个别实体，您仅需调用get方法，该方法接受一个类类型和键。
The class is annotated with an @Entity annotation to indicate to JPA that this class is a mapped entity.
类带上了注释@Entity，以向JPA指示该类是一个被映射的实体。
Implementing the MBean class is usually fairly straightforward, as the MBean interface is supposed to reflect the properties and management operations of an existing entity or service.
实现MBean类通常非常直接明了，因为MBean接口要反映现有实体或服务的属性和管理操作。
Your entity class must have matching fields on the class or it can embed the key as an embeddable key
您的实体类必须在类上具有匹配字段，或者它可以作为可嵌入键嵌入该键
An entity class is a class that represents an entity in a business model. In our model, the entity classes are Customer, Order, and OrderItem.
一个实体类在业务模型中代表着一个实体，在我们的业务模型中，实体类是Customer、Order、和OrderItem。
The concrete DAO for the Person entity class should add finder methods that are specific to the Person entity.
Person实体类的具体DAO应该增加一个特定于Person实体的finder方法。
Base class for attributes that define how properties of types in the object layer are mapped to the properties of entity types or complex types in the conceptual model.
特性的基类，这些特性定义如何将对象层中的类型映射到概念模型中的实体类型和复杂类型。
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