The best 5 Android ORM Framework

There are several ways to save data when developing Android apps,

One is saved locally, one is in the background (API interface is provided), and the other is on an open cloud service (such as SyncAdapter would be a good choice).

For the first approach, local data storage, such as embedded sqllite, you can choose to use SQL statements, Content Provider, or ORM (object Relational data mapping) directly.

The development of Android apps is primarily the Java language, so some of the ORM for the Java language can be ported to the Android platform.

The following is a general introduction to the 5 available ORM:

1. Ormliteormlite is not an ORM framework dedicated to the Android platform, it is a Java ORM. Supports JDBC connection, spring and Android platform. Annotations (Annotation) are widely used in the syntax.

2. Sugarormsugarorm is a dedicated ORM for the Android platform. Provide easy-to-learn APIs. It is easy to process 1 pairs of 1 and 1-to-many relational data and simplify CRUD basic operations with 3 functions, save (), delete (), and find () (or FindByID ()).
To enable Sugarorm, you need to add the following meta-data tags in your application's androidmanifest.xml configuration:

<meta-data android:name= "DATABASE" android:value= "my_database.db"/><meta-data android:name= "VERSION" Android:value= "1"/><meta-data android:name= "Query_log" android:value= "true"/><meta-data android:name= "Domain_package_name" android:value= "Com.my-domain"/>

You can then extend the data classes you need to save from Sugarorm:

public class User extends sugarrecord<user> {    String username;    String password;    int age;    @Ignore    string bio;//this'll be ignored by Sugarorm public     User () {} public     User (string username, string p Assword,int age) {        this.username = Username;        This.password = password;        This.age = age;    }}

To add a user, the code is as follows:

User JohnDoe = New User (GetContext (), "John.doe", "secret", +); Johndoe.save (); Stores the new user into the database

3. Greendao when performance is important (data access is frequent), Greendao is a quick solution that can support thousands of records of crud per second, and Greendao is almost 4.5 times times faster than Ormlite. (Please benchmark the exact data).

Greendao is less than 100KB, so it has little effect on the size of the app apk.
Here's a tutorial that shows how to use Android Studio to use the Greendao framework in Android apps.

4. The active androidactive Record (Active Directory) is a typical naming method for ORM implementations in Yii, rails, and other frameworks. Active Android helps you manipulate SQLite in an object-oriented way.
To include active Android in your project, you need to add a jar file under the project's/libs directory. You can get the source code from GitHub and edit it using Maven. Then you should add these meta-data to your application's Androidmanifest.xml configuration:

<meta-data android:name= "Aa_db_name" android:value= "my_database.db"/><meta-data android:name= "AA_DB_ VERSION "android:value=" 1 "/>

Then call the Activeandroid.initialize () method in your activity:

public class MyActivity extends Activity {    @Override public    void OnCreate (Bundle savedinstancestate) {        Super.oncreate (savedinstancestate);        Activeandroid.initialize (this);         Rest of the app    }}

Now you can use Java annotations to create a model class:

@Table (name = "User") public class User extends Model {    @Column (name = "username") public    String username;     @Column (name = "password") public    String password;     Public User () {        super ();    }     Public User (String username,string password) {        super ();        This.username = Username;        This.password = password;    }}

5. Realmrealm is a ready-to-use Android ORM that is written in C + + and runs directly on your device hardware (no need to be interpreted) and therefore runs quickly. It is also open source cross-platform, iOS code can be found on GitHub, you can also find objective C and swift written realm usages.

Original source: Http://techbrood.com/?q=orm&s=1#b0fe2c8d713c24ce

by Iefreer

The best 5 Android ORM Framework