ObjectServer SourceCode GPL - https://github.com/iboxdb/db4o-gpl

All Known Subinterfaces:

ExtObjectServer

All Known Implementing Classes:

ObjectServerImpl
```
public interface ObjectServer
```
The db4o server interface.

- db4o servers can be opened with Db4oClientServer#openServer(String, int).
- Direct in-memory connections to servers can be made with openClient()
- TCP connections are available through Db4oClientServer#openClient(String, int, String, String).

Before connecting clients over TCP, you have to grantAccess(String, String) to the username and password combination that you want to use.

See Also:

Db4o.openServer, ExtObjectServer for extended functionality

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`close()`	Closes the `ObjectServer` and writes all cached data.
`ExtObjectServer`	`ext()`	Returns an `ExtObjectServer` with extended functionality.
`void`	`grantAccess(java.lang.String userName, java.lang.String password)`	Grants client access to the specified user with the specified password.
`ObjectContainer`	`openClient()`	Opens a client against this server.

- Method Detail
  - close
```
boolean close()
```
    Closes the ObjectServer and writes all cached data.
    
    Returns:
    
    true - denotes that the last instance connected to the used database file was closed.
  - ext
```
ExtObjectServer ext()
```
    Returns an ExtObjectServer with extended functionality.
    
    Use this method to conveniently access extended methods.
    
    The functionality is split to two interfaces to allow newcomers to focus on the essential methods.
  - grantAccess
```
void grantAccess(java.lang.String userName,
                 java.lang.String password)
```
    Grants client access to the specified user with the specified password.
    
    If the user already exists, the password is changed to the specified password.
    
    Parameters:
    
    userName - the name of the user
    
    password - the password to be used
  - openClient
```
ObjectContainer openClient()
```
    Opens a client against this server.
    
    A client opened with this method operates within the same VM as the server. Since an embedded client use direct communication, without an in-between socket connection, performance will be better than a client opened with Db4oClientServer#openClient(java.lang.String, int, java.lang.String, java.lang.String)
    
    Every client has it's own transaction and uses it's own cache for it's own version of all persistent objects.