我要从网络上获取对象,然后将其直接插入 ROOM DATABASE
@Entity(tableName = Constants.TABLE_OBJECT_ICONS)
public class ObjectClass {
@PrimaryKey()
@SerializedName("id")
@ColumnInfo(name = Constants.KEY_OBJECT_ID)
@Expose
private Integer id;
@SerializedName("controlUnit")
@ColumnInfo(name = Constants.KEY_CONTROL_UNIT)
@Expose
private String controlUnit;
@SerializedName("isStack")
@ColumnInfo(name = Constants.IS_STACK)
@Expose
private Boolean isStack;
public Boolean getStack() {
return isStack;
}
public void setStack(Boolean stack) {
isStack = stack;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getControlUnit() {
return controlUnit;
}
public void setControlUnit(String controlUnit) {
this.controlUnit = controlUnit;
}
}
现在的问题是,我正在将 Boollen 数据类型插入数据库,并且房间正在将其映射到0和1,但是当我尝试获取数据时,我的 getStack()方法返回null
更新
这是 Dao
@Dao
public interface ObjectDao {
@Insert
void insertObject(ObjectClass objectClass);
@Query("DELETE FROM object_icons")
void deleteAllObjects();
@Query("SELECT * FROM object_icons WHERE object_id=:id AND site_id=:siteId")
Single<ObjectClass> getObjectById(String id, String siteId);
@Query("SELECT object_name FROM object_icons WHERE object_id=:id AND site_id=:siteId")
String getObjectNameById(String id, String siteId);
@Query("SELECT * FROM object_icons WHERE object_keyword=:key AND site_id=:siteId")
ObjectClass getObjectByKey(String key, String siteId);
@Query("SELECT * FROM object_icons WHERE site_id=:siteId")
Single<List<ObjectClass>> getObjectIconsList(String siteId);
}
,在获取数据库后,我将其打开到 SQLite Online 中,下面是数据库的结构。
答案 0 :(得分:0)
在阅读对象时,参考此answer房间应将1
转换为true
。同样,如果您要从Sqlite迁移到Room,则您可能会遇到Boolean
和Integer
类型的问题,我不知道这是否是您的情况,但以下是一个链接,以防万一: room migration using existing boolean column types