objectbox-java

by objectbox

objectbox / objectbox-java

ObjectBox is a superfast lightweight database for objects

3.6K Stars 248 Forks Last release: 2 months ago (V2.7.1) Apache License 2.0 1.1K Commits 21 Releases

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ObjectBox Java (Kotlin, Android)

ObjectBox is a superfast object-oriented database with strong relation support. ObjectBox is embedded into your Android, Linux, macOS, or Windows app.

Latest version: 2.7.1 (2020/08/19)

Demo code using ObjectBox:

Playlist playlist = new Playlist("My Favorties");
playlist.songs.add(new Song("Lalala"));
playlist.songs.add(new Song("Lololo"));
box.put(playlist);

Other languages/bindings

ObjectBox supports multiple platforms and languages. Besides JVM based languages like Java and Kotlin, ObjectBox also offers:

Gradle setup

Add this to your root build.gradle (project level):

buildscript {
    ext.objectboxVersion = '2.7.1'
    dependencies {
        classpath "io.objectbox:objectbox-gradle-plugin:$objectboxVersion"
    }
}

And this to our app's build.gradle (module level):

apply plugin: 'io.objectbox' // after applying Android plugin

First steps

Create data object class

@Entity
, for example "Playlist".
java
@Entity public class Playlist { ... }
Now build the project to let ObjectBox generate the class
MyObjectBox
for you.

Prepare the BoxStore object once for your app, e.g. in

onCreate
in your Application class:
boxStore = MyObjectBox.builder().androidContext(this).build();

Then get a

Box
class for the Playlist entity class:
Box box = boxStore.boxFor(Playlist.class);

The

Box
object gives you access to all major functions, like
put
,
get
,
remove
, and
query
.

For details please check the docs.

Links

Features

Docs & Changelog, JavaDocs

Examples

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License

Copyright 2017-2020 ObjectBox Ltd. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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