Realm-java: Reading .Realm File

[devvishal06]

Can any one please let me know i have Test.realm file which is exported by me from Another Project.I want to read and use this file in my project(On Android Platform).I am already using realm for my application.
I am placing the file in assets folder;can you please let me know how to access this file.

[Zhuinden]

RealmConfiguration.Builder has a method named assetFile(), if you set that filename as parameter then it'll be used as source of initial Realm

[devvishal06]

 public RealmController(Context application) {
        realmConfiguration = new RealmConfiguration.Builder(application)
                .deleteRealmIfMigrationNeeded()
                .schemaVersion(DB_VERSION).build();
        // Clear the realm from last time

        Realm.setDefaultConfiguration(realmConfiguration);
        realm = Realm.getInstance(realmConfiguration);
}

I am using this default realm of my app can you please let me know how to read another .realm file in Parrallel.

[kneth]

You can have multiple configurations in an app, and you can get instances of them. Realms cannot be mixed. For example, you cannot query multiple Realms in a single query. Moreover, you will have to manually copy objects from one Realm to the other (combining copyFromRealm() and copyToRealm() is one way).

[devvishal06]

Can you please send me the code snippet how to read .realm file from asset folder in android;with parallel using my default realm schema.
private void getData(){

    RealmConfiguration config1 = new RealmConfiguration.Builder(this)



            .assetFile(this,"data/BizGeo.realm")
            .schemaVersion(30)
            .build();
    Realm realm = Realm.getInstance(config1);
     realm.close();

            LogManager.d("Sheet list size","Size"+list.size());

}

i am using this code
But throwing error

java.lang.IllegalArgumentException: Configurations cannot be different if used to open the same file.
Cached configuration:
realmFolder: /data/user/0/com.example.hats/files
realmFileName : default.realm
canonicalPath: /data/data/com.example.hats/files/default.realm
key: [length: 0]
schemaVersion: 30
migration: null
deleteRealmIfMigrationNeeded: true
durability: FULL
schemaMediator: io.realm.DefaultRealmModuleMediator@d079674f

                                                              New configuration: 
                                                              realmFolder: /data/user/0/com.example.hats/files
                                                              realmFileName : default.realm
                                                              canonicalPath: /data/data/com.example.hats/files/default.realm
                                                              key: [length: 0]
                                                              schemaVersion: 30
                                                              migration: null
                                                              deleteRealmIfMigrationNeeded: false
                                                              durability: FULL
                                                              schemaMediator: io.realm.DefaultRealmModuleMediator@d079674f
                                                                  at io.realm.RealmCache.validateConfiguration(RealmCache.java:251)
                                                                  at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java:114)
                                                                  at io.realm.Realm.getInstance(Realm.java:192)

[kneth]

You need to specify two different file name. Just use name() in your configuration: https://realm.io/docs/java/3.0.0/api/io/realm/RealmConfiguration.Builder.html#name-java.lang.String-

RealmConfiguration config1 = new RealmConfiguration.Builder(this)
        .assetFile(this,"data/BizGeo.realm")
        .name("BizGeo.realm")
        .schemaVersion(30)
        .build();

RealmConfiguration config2 = new RealmConfiguration.Builder(this)
        .name("somethingElse.realm") // not required: default.realm is fine
        .build();

You might wish to use module() if you don't have the exact same classes in both configurations.

[Zhuinden]

Indeed, you need to specify name("[filename].realm") to open the asset realm into a different Realm file, the default name is default.realm.

What is RealmController?

[beeender]

Hope your issue is solved. Feel free to reopen this if needed.