Java API - OServer

This class allows you to embed and manage a server instance within your application. Once you start the server, you can interact with it and manage data the same as you would standard instances of the OrientDB Server.

For more information, see Embedding the Server. For the complete OServer documentation, see the Javadocs.

Working with OServer

In order to operate on an OrientDB database, you first need to establish a connection with the server. You have two options in this: you can connect to a running OrientDB Server using OrientDB or you can embed the server within your application using this class. It can be found at com.orientechnologies.orient.server. For instance,

/* Import OrientDB Classes */
import com.orientechnologies.orient.server.OServer;

Once you've imported the class to your application, you can use one of the constructors to build a particular instance in your code.

Constructors

This class provides two constructors to create instances of OServer in your application. The first takes no arguments and the second takes a single boolean argument, which defines whether you want to shut the server down on exit.

// CONSTRUCTOR 1
OServer()

// CONSTRUCTOR 2
OServer(boolean shutdownEngineOnExit)

Exception

This class throws the following exceptions.

Methods

Once you've initialized the class in your application, you can call the following methods on your instance.

Managing Server Instances

Method Return Type Description
getInstance() OServer Retrieves a server instance by ID.
getInstanceByPath() OServer Retrieve a server instance by its path.
isActive() boolean Checks whether server is active.
restart() void Restarts the server.
shutdown() boolean Shuts down the server.
startup() OServer Starts the server.

Managing Databases

Method Return Type Description
getDatabaseDirectory() java.lang.String Retrieves the root database directory.
openDatabase() ODatabase<T> Opens the given database.

Managing Storage

Method Return Type Description
existsStoragePath() boolean Determines whether storage path exists.
getAvailableStorageNames() Map<String,String> Retrieves a map of available storage types.
getStoragePath() java.lang.String Retrieves the storage path.

User Management

Method Return Type Description
addTemporaryUser() void Adds a temporary user to the server.
addUser() void Adds a user to the server.
authenticate() boolean Authenticates a user on the server.
dropUser() void Removes user from the server.
isAllowed() boolean Checks whether user can access a given resource.

Configuration

Method Return Type Description
getConfiguration() OServerConfiguration Retrieves the server configuration.
saveConfiguration() void Saves the server configuration to disk.

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