android - 为 greenDao 和改造创建通用数据模型

Question

我有来自这样的网络服务的 json 响应

{
 "id":1,
 "name":"abc",
 "address": {
               "streetName":"cde",
               "city":NY
            }
}

我正在为我的项目使用 Retrofit 和 greenDao。对于两者，我们都需要一个数据模型。仅用于改造，我的数据模型如下所示

public class Example {

    private Integer id;
    private String name;
    private Address address;

    public Example() {
    }

    public Example(Integer id, String name, Address address) {
        this.id = id;
        this.name = name;
        this.address = address;
    }

    public Integer getId() {
        return id;
    }


    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }


    public void setName(String name) {
        this.name = name;
    }


    public Address getAddress() {
        return address;
    }


    public void setAddress(Address address) {
        this.address = address;
    }

}




public class Address {

    private String streetName;
    private String city;

    public Address() {
    }

    public Address(String streetName, String city) {
        this.streetName = streetName;
        this.city = city;
    }


    public String getStreetName() {
        return streetName;
    }


    public void setStreetName(String streetName) {
        this.streetName = streetName;
    }


    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

}

可以用于Retrofit，但是greenDao有一个生成器，也可以生成数据模型。我如何从 greenDao generator project 生成 Datamodel ，它可以用于 retrofit 和 greenDao

提前致谢

Answer 1

生成器应该是这样的:

    Schema schema = new Schema(1, <your.package.id.where.models.are.held>);

    Entity model = schema.addEntity("Model");
    model.addIdProperty();
    model.addStringProperty("name");

    Entity address = schema.addEntity("Address");
    Property addressIdProperty = address.addIdProperty().getProperty();
    address.addStringProperty("streetName");
    address.addStringProperty("city");

    model.addToOne(address, addressIdProperty).setName("address");

    DaoGenerator generator = new DaoGenerator();
    generator.generateAll(schema, "./app/src/main/java");

如您所见，Model 类包含对地址的引用，通过添加一对一关系并将其命名为“地址”。

这样任何 json 解析器，如 GSON可以解析您的对象并将它们放入数据库。