我最近开始使用Realm
。首先很清楚,如果你存储一个类,即一个对象。但是当你想在字段中存储具有自定义类型的类时,它们具有相同的东西。
那是:
class Dog extend RealmObject{
private int count;
private Cat cat;
// геттеры и сеттеры
}
class Cat extend RealmObject{
private int count;
private RealmList<Cow> cowList;
// геттеры и сеттеры
}
class Cow extend RealmObject{
private int count;
private Horse horse;
// геттеры и сеттеры
}
所以,要在数据库中保存这个写了一堆行:
public void setChatsList(final ChatsModel chatsModel) {
Realm realm = Realm.getDefaultInstance();
realm.executeTransaction(new Realm.Transaction() {
@Override
public void execute(@NonNull Realm realm) {
ChatsModel realmChats = realm.createObject(ChatsModel.class);
Response realmResponse = realm.createObject(Response.class);
Item realmItem = realm.createObject(Item.class);
Message realmMessage = realm.createObject(Message.class);
Attachment realmAttachment = realm.createObject(Attachment.class);
Video realmVideo = realm.createObject(Video.class);
Response response = chatsModel.getResponse();
RealmList<Item> items = new RealmList<>();
Integer itemCount = response.getCount();
RealmList<Item> itemList = response.getItems();
if (itemList != null) {
for (Item item : itemList) {
Message message = item.getMessage();
realmMessage.setId(message.getId());
realmMessage.setDate(message.getDate());
realmMessage.setOut(message.getOut());
realmMessage.setUserId(message.getUserId());
realmMessage.setReadState(message.getReadState());
realmMessage.setTitle(message.getTitle());
realmMessage.setBody(message.getBody());
realmMessage.setRandomId(message.getRandomId());
RealmList<Attachment> attachments = message.getAttachments();
RealmList<Attachment> attachmentList = new RealmList<>();
if (attachments != null) {
for (Attachment attachment : attachments) {
String type = attachment.getType();
Video video = attachment.getVideo();
realmVideo.setAccessKey(video.getAccessKey());
realmVideo.setCanAdd(video.getCanAdd());
realmVideo.setCanEdit(video.getCanEdit());
realmVideo.setComments(video.getComments());
realmVideo.setDate(video.getDate());
realmVideo.setDescription(video.getDescription());
realmVideo.setDuration(video.getDuration());
realmVideo.setId(video.getId());
realmVideo.setOwnerId(video.getOwnerId());
realmVideo.setPhoto130(video.getPhoto130());
realmVideo.setPhoto320(video.getPhoto320());
realmVideo.setPhoto640(video.getPhoto640());
realmVideo.setPlatform(video.getPlatform());
realmVideo.setTitle(video.getTitle());
realmVideo.setViews(video.getViews());
realmAttachment.setType(type);
realmAttachment.setVideo(realmVideo);
attachmentList.add(realmAttachment);
}
realmMessage.setAttachments(attachmentList);
}
realmResponse.getItems().add(item);
}
}
realmResponse.setCount(itemCount);
realmChats.setResponse(realmResponse);
}
});
}
同意一个任务行太多了。在我看来,我做错了
问题:如何正确地做以及如何缩短我的方法,请告诉我?
答案 0 :(得分:0)
我可能会遗漏一些更精细的细节,但看起来你只是将响应映射为1:1。你有什么理由不能直接使用它吗?
colNameSheet2 = "A"
Realm会自动将未管理的列表转换为托管列表。