realm

I have a RealmObject (let's say Owner ) and it has RealmList<Cat> . Cat has a property name . How do I query for all the Owner s who have cat with specified name ? I tried: RealmResult<Owner> owners = realm.query(Owner.class) .contains("cats", "Garfield") .findAll(); But it does not work. PS most probably duplicate but cant find. . can be used when query child object/list fields, for your case try below: RealmResult<Owner> owners = realm.query(Owner.class) .contains("cats.name", "Garfield") .findAll(); 来源： https://stackoverflow.com/questions/34924574/how-do-i-query-realmobject-that-have

今天主要看了shiro的认证，授权功能初步了解了一下，其他的功能用的不多，之后再看。 认证 下面的例子是以继承了AuthenticatingRealm的自定义Realm来实现自定义认证。 认证依赖于方法doGetAuthenticationInfo，需要返回一个AuthenticationInfo，通常返回一个他的子类SimpleAuthenticationInfo，构造方法的第一个参数是用户名，第二个是验证密码，第三个是当前realm的className。 package com.demo.realms; import org.apache.shiro.authc.*; import org.apache.shiro.realm.AuthenticatingRealm; public class MyRealm extends AuthenticatingRealm { @Override protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) { System.out.println("MyRealm认证中---->用户："+token.getPrincipal()); // 可以从token中获取用户名来从数据库中查询数据 UsernamePasswordToken

Is there a way that when I read an object from Realm that it can become a standalone or unmanaged object? In EF, this is called no tracking. The usage for this would be when I want to implement more business logic on my data objects before they are updated on the persistent data storage. I may want to give the RealmObject to a ViewModel, but when the changes come back from the ViewModel, I want to compare the disconnected object to the object in the datastore to determine what was changed, so If there was a way that I could disconnect the object from Realm when I give it to the ViewModel, then

Shiro介绍 1.shiro介绍：Shirp是apache旗下一个开源框架，它将软件系统的安全认证相关的功能抽取出来，实现用户身份认证，权限授权，加密，会话管理等功能，组成一个通用的安全认证框架。 2.Shiro框架 3.对象： a) Subject：主体，外部应用与subject进行交互，subject记录了当前操作用户，将用户的概念理解为当前操作的主体，可能是通过浏览器请求的用户，也可能是一个运行的程序。Subject在shiro中是一个接口，接口中定义了很多认证授权的相关方法，外部程序通过subject进行认证授权，而subject是通过SecurityManager安全管理器进行认证授权。 b) SecurityManager：安全管理器，对全部的subject进行安全管理，它是shiro的核心，负责对所有的subject进行安全管理。通过SecurityManager可以完成subject的认证，授权等，实质上SecurityManager是通过Authenticator进行认证，通过Authorizer进行授权，通过SessuionManager进行会话管理等。SecurityManager是一个接口，继承了Authenticator，Authorizer，SessionManager三个接口。 c) Authenticator：认证器，对用户身份进行认证

I am completely new to realm. I want to use realm db in my android project. I have gone through the official Realm documentation . I need to set up realm in my android project. For that I have added the gradle dependancy as buildscript { repositories { jcenter() } dependencies { classpath "io.realm:realm-gradle-plugin:0.88.2" } } apply plugin: 'realm-android' This is what they have given in documentation. But this doesn't work for me. It gives error saying Plugin with id 'realm-android' not found . This is my build.gradle file apply plugin: 'com.android.application' apply plugin: 'realm

I noticed many problems with accessing realm object, and I thought that my solution would be solving that. So I have written simple helping method like this: public func write(completion: @escaping (Realm) -> ()) { DispatchQueue(label: "realm").async { if let realm = try? Realm() { try? realm.write { completion(realm) } } } } I thought that completion block will be fine, because everytime I write object or update it, I use this method above. Unfortunately I'm getting error: libc++abi.dylib: terminating with uncaught exception of type realm::IncorrectThreadException: Realm accessed from

As seen in the official documentation on how to use Realm // Initialize Realm Realm.init(context); // Get a Realm instance for this thread Realm realm = Realm.getDefaultInstance(); I added dependencie to my project classpath "io.realm:realm-gradle-plugin:2.0.2" I can use this library normally but static method init apparently does not exist . Can someone post an example of how to initialize and save example object to database using this library? There's really not too many tutorials and the usage looks really easy after you manage to fire it up. Realm initialization sets up default