FlatBuffs source files

build.gradle

apply plugin: 'com.android.application'
apply plugin: 'com.jakewharton.hugo'

android {
    compileSdkVersion 22
    buildToolsVersion "23.0.0 rc2"

    defaultConfig {
        applicationId "frogermcs.io.flatbuffs"
        minSdkVersion 15
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.2.1'
    compile 'com.google.code.gson:gson:2.3.1'
    compile 'com.jakewharton:butterknife:7.0.1'
    compile 'io.reactivex:rxjava:1.0.10'
    compile 'io.reactivex:rxandroid:1.0.0'
}

MainActivity.java

public class MainActivity extends AppCompatActivity {

    @Bind(R.id.tvFlat)
    TextView tvFlat;
    @Bind(R.id.tvJson)
    TextView tvJson;

    private RawDataReader rawDataReader;

    private ReposListJson reposListJson;
    private ReposList reposListFlat;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        rawDataReader = new RawDataReader(this);
    }

    @OnClick(R.id.btnJson)
    public void onJsonClick() {
        rawDataReader.loadJsonString(R.raw.repos_json).subscribe(new SimpleObserver<String>() {
            @Override
            public void onNext(String reposStr) {
                parseReposListJson(reposStr);
            }
        });
    }

    private void parseReposListJson(String reposStr) {
        long startTime = System.currentTimeMillis();
        reposListJson = new Gson().fromJson(reposStr, ReposListJson.class);
        for (int i = 0; i < reposListJson.repos.size(); i++) {
            RepoJson repo = reposListJson.repos.get(i);
            Log.d("FlatBuffers", "Repo #" + i + ", id: " + repo.id);
        }
        long endTime = System.currentTimeMillis() - startTime;
        tvJson.setText("Elements: " + reposListJson.repos.size() + ": load time: " + endTime + "ms");
    }

    @OnClick(R.id.btnFlatBuffers)
    public void onFlatBuffersClick() {
        rawDataReader.loadBytes(R.raw.repos_flat).subscribe(new SimpleObserver<byte[]>() {
            @Override
            public void onNext(byte[] bytes) {
                loadFlatBuffer(bytes);
            }
        });
    }

    private void loadFlatBuffer(byte[] bytes) {
        long startTime = System.currentTimeMillis();
        ByteBuffer bb = ByteBuffer.wrap(bytes);
        reposListFlat = frogermcs.io.flatbuffs.model.flat.ReposList.getRootAsReposList(bb);
        for (int i = 0; i < reposListFlat.reposLength(); i++) {
            Repo repos = reposListFlat.repos(i);
            Log.d("FlatBuffers", "Repo #" + i + ", id: " + repos.id());
        }
        long endTime = System.currentTimeMillis() - startTime;
        tvFlat.setText("Elements: " + reposListFlat.reposLength() + ": load time: " + endTime + "ms");

    }
}

repos_json_fragment.json

{
  "repos": [
    {
      "id": 27149168,
      "name": "acai",
      "full_name": "google/acai",
      "owner": {
        "login": "google",
        "id": 1342004,
        ...
        "type": "Organization",
        "site_admin": false
      },
      "private": false,
      "html_url": "https://github.com/google/acai",
      "description": "Testing library for JUnit4 and Guice.",
      ...
      "watchers": 21,
      "default_branch": "master"
    },
    ...
  ]
}

repos_schema_fragment.fbs

table ReposList {
    repos : [Repo];
}

table Repo {
    id : long;
    name : string;
    full_name : string;
    owner : User;
    //...
    labels_url : string (deprecated);
    releases_url : string (deprecated);
}

table User {
    login : string;
    id : long;
    avatar_url : string;
    gravatar_id : string;
    //...
    site_admin : bool;
}

root_type ReposList;