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io.realm.mongodb.sync

Class SyncConfiguration

On this page

  • io.realm.mongodb.sync
  • Nested Class Summary
  • Method Summary
  • Inherited Methods
  • Method Detail
  • defaultConfig
  • equals
  • forRecovery
  • getClientResetHandler
  • getErrorHandler
  • getInitialDataTransaction
  • getInitialRemoteDataTimeout
  • getInitialSubscriptionsHandler
  • getPartitionValue
  • getServerUrl
  • getSessionStopPolicy
  • getSyncClientResetStrategy
  • getUrlPrefix
  • getUser
  • hashCode
  • isFlexibleSyncConfiguration
  • isPartitionBasedSyncConfiguration
  • isSyncConfiguration
  • realmExists
  • shouldDeleteRealmOnLogout
  • shouldWaitForInitialRemoteData
  • toString

io.realm.mongodb.sync

java.lang.Object
io.realm.RealmConfiguration
io.realm.mongodb.sync.SyncConfiguration

A SyncConfiguration is used to setup a realm that can be synchronized between devices using MongoDB Realm.

A valid User is required to create a SyncConfiguration . See Credentials and App.loginAsync(Credentials, App.Callback) for more information on how to get a user object.

A minimal SyncConfiguration can be found below.

App app = new App("app-id");
User user = app.login(Credentials.anonymous());
SyncConfiguration config = SyncConfiguration.defaultConfiguration(user, "partition-value");
Realm realm = Realm.getInstance(config);

Synchronized Realms only support additive migrations which can be detected and performed automatically, so the following builder options are not accessible compared to a normal Realm:

  • deleteRealmIfMigrationNeeded()

  • migration(Migration)

Synchronized Realms are created by using Realm.getInstance(RealmConfiguration) and Realm.getDefaultInstance() like ordinary unsynchronized Realms.

Tip

See also:

  • The docs for more information about synchronization.

Nested Class Summary

Modifier and Type
Class and Description
public static interface
public static final

Method Summary

Modifier and Type
Method and Description
public static SyncConfiguration
defaultConfig (
User user,
ObjectId partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

public static SyncConfiguration
defaultConfig (
User user,
Integer partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

public static SyncConfiguration
defaultConfig (
User user,
Long partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

public static SyncConfiguration
defaultConfig (
User user,
String partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

public static SyncConfiguration
defaultConfig (
User user
)

Returns a default Flexible Sync configuration for the given user.

public boolean
public static RealmConfiguration
forRecovery (
String canonicalPath
)

Returns a RealmConfiguration appropriate to open a read-only, non-synced Realm to recover any pending changes.

public static RealmConfiguration
forRecovery (
String canonicalPath,
byte[] encryptionKey,
java.lang.Object[] modules
)

Returns a RealmConfiguration appropriate to open a read-only, non-synced Realm to recover any pending changes.

getClientResetHandler ()

Returns the Client Reset handler for this SyncConfiguration.

getErrorHandler ()

Returns the error handler for this SyncConfiguration.

getInitialDataTransaction ()

Returns the transaction instance with initial data.

public long
getInitialRemoteDataTimeout (
TimeUnit unit
)

Returns the timeout defined when downloading any initial data the first time the Realm is opened.

getInitialSubscriptionsHandler ()

Returns the configured initial subscription handler for this realm.

public BsonValue
getPartitionValue ()

Returns the value this Realm is partitioned on.

public URI
getServerUrl ()

Returns the server URI for the remote MongoDB Realm the local Realm is synchronizing with.

public OsRealmConfig.SyncSessionStopPolicy
getSessionStopPolicy ()

NOTE: Only for internal usage.

getSyncClientResetStrategy ()

Returns the sync client reset strategy for this SyncConfiguration.

public String
getUrlPrefix ()

Returns the url prefix used when establishing a sync connection to the Realm Object Server.

public User
getUser ()

Returns the user.

public int
public boolean
isFlexibleSyncConfiguration ()

Returns whether or not this configuration is for opening a Realm configured for Flexible Sync.

public boolean
isPartitionBasedSyncConfiguration ()

Returns whether or not this configuration is for opening a Realm configured for Partition-based Sync.

protected boolean
protected boolean
realmExists ()

Checks if the Realm file defined by this configuration already exists.

public boolean
shouldDeleteRealmOnLogout ()

Returns true if the Realm file must be deleted once the User owning it logs out.

public boolean
shouldWaitForInitialRemoteData ()

Returns true if the Realm will download all known changes from the remote server before being opened the first time.

public String

Inherited Methods

  • Methods inherited from class java.lang.Object : getClass , hashCode , equals , clone , toString , notify , notifyAll , wait , wait , wait , finalize

  • Methods inherited from class io.realm.RealmConfiguration : getRealmDirectory , getRealmFileName , getEncryptionKey , getSchemaVersion , getMigration , shouldDeleteRealmIfMigrationNeeded , getDurability , getSchemaMediator , getInitialDataTransaction , hasAssetFile , getAssetFilePath , getCompactOnLaunchCallback , getRealmObjectClasses , getPath , realmExists , getRxFactory , getFlowFactory , isReadOnly , isRecoveryConfiguration , getMaxNumberOfActiveVersions , isAllowWritesOnUiThread , isAllowQueriesOnUiThread , equals , getInstance , hashCode , createSchemaMediator , toString , isSyncConfiguration , forRecovery

Method Detail

defaultConfig

public static SyncConfiguration defaultConfig (
User user,
ObjectId partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

Parameters

  • user - The user that will be used for accessing the Realm App.

  • partitionValue - The partition value identifying the remote Realm that will be synchronized.

Returns

the default configuration for the given user and partition value.

public static SyncConfiguration defaultConfig (
User user,
Integer partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

Parameters

  • user - The user that will be used for accessing the Realm App.

  • partitionValue - The partition value identifying the remote Realm that will be synchronized.

Returns

the default configuration for the given user and partition value.

public static SyncConfiguration defaultConfig (
User user,
Long partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

Parameters

  • user - The user that will be used for accessing the Realm App.

  • partitionValue - The partition value identifying the remote Realm that will be synchronized.

Returns

the default configuration for the given user and partition value.

public static SyncConfiguration defaultConfig (
User user,
String partitionValue
)

Returns a default Partition-based Sync configuration for the given user and partition value.

Parameters

  • user - The user that will be used for accessing the Realm App.

  • partitionValue - The partition value identifying the remote Realm that will be synchronized.

Returns

the default configuration for the given user and partition value.

public static SyncConfiguration defaultConfig (
User user
)

Returns a default Flexible Sync configuration for the given user.

Parameters

  • user - The user that will be used for accessing the Realm App.

Returns

the default Flexible Sync configuration for the given user.

Tip

See also:

  • {@link SubscriptionSet} for more information about Flexible Sync.

equals

public boolean equals (
Object o
)

Overrides

equals in class RealmConfiguration

forRecovery

public static RealmConfiguration forRecovery (
String canonicalPath
)

Returns a RealmConfiguration appropriate to open a read-only, non-synced Realm to recover any pending changes. This is useful when trying to open a backup/recovery Realm (after a client reset). Note: This will use the default Realm module (composed of all RealmModel ), and assume no encryption should be used as well.

Parameters

  • canonicalPath - the absolute path to the Realm file defined by this configuration.

Returns

RealmConfiguration that can be used offline

public static RealmConfiguration forRecovery (
String canonicalPath,
byte[] encryptionKey,
java.lang.Object[] modules
)

Returns a RealmConfiguration appropriate to open a read-only, non-synced Realm to recover any pending changes. This is useful when trying to open a backup/recovery Realm (after a client reset).

Parameters

  • canonicalPath - the absolute path to the Realm file defined by this configuration.

  • encryptionKey - the key used to encrypt/decrypt the Realm file.

  • modules - if specified it will restricts Realm schema to the provided module.

Returns

RealmConfiguration that can be used offline

getClientResetHandler

Returns the Client Reset handler for this SyncConfiguration.

Returns

the Client Reset handler.

getErrorHandler

Returns the error handler for this SyncConfiguration.

Returns

the error handler.

getInitialDataTransaction

Returns the transaction instance with initial data.

Returns

the initial data transaction.

Overrides

getInitialDataTransaction in class RealmConfiguration

getInitialRemoteDataTimeout

Returns the timeout defined when downloading any initial data the first time the Realm is opened.This value is only applicable if shouldWaitForInitialRemoteData() returns true .

Returns

the time Realm will wait for all changes to be downloaded before it is aborted and an exception is thrown.

Tip

See also:

getInitialSubscriptionsHandler

Returns the configured initial subscription handler for this realm.

Returns

the handler used to configure initial subscriptions for this realm.

getPartitionValue

public BsonValue getPartitionValue ()

Returns the value this Realm is partitioned on. The partition key is a property defined in MongoDB Realm. All classes with a property with this value will be synchronized to the Realm.

Returns

the value being used by MongoDB Realm to partition the server side MongoDB Database into Realms that can be synchronized independently.

Throws

getServerUrl

public URI getServerUrl ()

Returns the server URI for the remote MongoDB Realm the local Realm is synchronizing with.

Returns

URI identifying the MongoDB Realm this local Realm is synchronized with.

getSessionStopPolicy

public OsRealmConfig.SyncSessionStopPolicy getSessionStopPolicy ()

NOTE: Only for internal usage. May change without warning. Returns the stop policy for the session for this Realm once the Realm has been closed.

Returns

the stop policy used by the session once the Realm is closed.

getSyncClientResetStrategy

Returns the sync client reset strategy for this SyncConfiguration.

Returns

the sync client reset strategy.

getUrlPrefix

Returns the url prefix used when establishing a sync connection to the Realm Object Server.

getUser

public User getUser ()

Returns the user.

Returns

the user.

hashCode

public int hashCode ()

Overrides

hashCode in class RealmConfiguration

isFlexibleSyncConfiguration

public boolean isFlexibleSyncConfiguration ()

Returns whether or not this configuration is for opening a Realm configured for Flexible Sync.

Returns

true if this configuration is for a Flexible Sync Realm, false if not.

isPartitionBasedSyncConfiguration

Returns whether or not this configuration is for opening a Realm configured for Partition-based Sync.

Returns

true if this configuration is for a Partition-based Sync Realm, false if not.

isSyncConfiguration

protected boolean isSyncConfiguration ()

Overrides

isSyncConfiguration in class RealmConfiguration

realmExists

protected boolean realmExists ()

Checks if the Realm file defined by this configuration already exists.WARNING: This method is just a point-in-time check. Unless protected by external synchronization another thread or process might have created or deleted the Realm file right after this method has returned.

Returns

true if the Realm file exists, false otherwise.

Overrides

realmExists in class RealmConfiguration

shouldDeleteRealmOnLogout

public boolean shouldDeleteRealmOnLogout ()

Returns true if the Realm file must be deleted once the User owning it logs out.

Returns

true if the Realm file must be deleted if the User logs out. false if the file is allowed to remain behind.

shouldWaitForInitialRemoteData

Returns true if the Realm will download all known changes from the remote server before being opened the first time.

Returns

true if all remote changes will be downloaded before the Realm can be opened. false if the Realm can be opened immediately.

toString

public String toString ()

Overrides

toString in class RealmConfiguration

Back

SyncClientResetStrategy

Next

SyncConfiguration.Builder