org.freedesktop.dbus

Class DirectConnection

public class DirectConnection extends AbstractConnection

Handles a peer to peer connection between two applications withou a bus daemon.

Signal Handlers and method calls from remote objects are run in their own threads, you MUST handle the concurrency issues.

Constructor Summary
DirectConnection(String address)
Create a direct connection to another application.
Method Summary
protected <T extends DBusSignal> voidaddSigHandler(DBusMatchRule rule, DBusSigHandler<T> handler)
static StringcreateDynamicSession()
Creates a bus address for a randomly generated abstract unix socket.
static StringcreateDynamicTCPSession()
Creates a bus address for a randomly generated tcp port.
DBusInterfacegetRemoteObject(String objectpath)
Return a reference to a remote object.
DBusInterfacegetRemoteObject(String objectpath, Class<? extends DBusInterface> type)
Return a reference to a remote object.
protected <T extends DBusSignal> voidremoveSigHandler(DBusMatchRule rule, DBusSigHandler<T> handler)

Constructor Detail

DirectConnection

public DirectConnection(String address)
Create a direct connection to another application.

Parameters: address The address to connect to. This is a standard D-Bus address, except that the additional parameter 'listen=true' should be added in the application which is creating the socket.

Method Detail

addSigHandler

protected <T extends DBusSignal> void addSigHandler(DBusMatchRule rule, DBusSigHandler<T> handler)

createDynamicSession

public static String createDynamicSession()
Creates a bus address for a randomly generated abstract unix socket.

Returns: a random bus address.

createDynamicTCPSession

public static String createDynamicTCPSession()
Creates a bus address for a randomly generated tcp port.

Returns: a random bus address.

getRemoteObject

public DBusInterface getRemoteObject(String objectpath)
Return a reference to a remote object. This method will always refer to the well known name (if given) rather than resolving it to a unique bus name. In particular this means that if a process providing the well known name disappears and is taken over by another process proxy objects gained by this method will make calls on the new proccess. This method will use bus introspection to determine the interfaces on a remote object and so may block and may fail. The resulting proxy object will, however, be castable to any interface it implements. It will also autostart the process if applicable. Also note that the resulting proxy may fail to execute the correct method with overloaded methods and that complex types may fail in interesting ways. Basically, if something odd happens, try specifying the interface explicitly.

Parameters: objectpath The path on which the process is exporting the object.

Returns: A reference to a remote object.

Throws: ClassCastException If type is not a sub-type of DBusInterface DBusException If busname or objectpath are incorrectly formatted.

getRemoteObject

public DBusInterface getRemoteObject(String objectpath, Class<? extends DBusInterface> type)
Return a reference to a remote object. This method will always refer to the well known name (if given) rather than resolving it to a unique bus name. In particular this means that if a process providing the well known name disappears and is taken over by another process proxy objects gained by this method will make calls on the new proccess.

Parameters: objectpath The path on which the process is exporting the object. type The interface they are exporting it on. This type must have the same full class name and exposed method signatures as the interface the remote object is exporting.

Returns: A reference to a remote object.

Throws: ClassCastException If type is not a sub-type of DBusInterface DBusException If busname or objectpath are incorrectly formatted or type is not in a package.

removeSigHandler

protected <T extends DBusSignal> void removeSigHandler(DBusMatchRule rule, DBusSigHandler<T> handler)