org.freedesktop.dbus

Class DirectConnection

java.lang.Object

org.freedesktop.dbus.AbstractConnection

org.freedesktop.dbus.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.

Nested Class Summary

Nested classes/interfaces inherited from class org.freedesktop.dbus.AbstractConnection

AbstractConnection.ConnThread, AbstractConnection.FallbackContainer, AbstractConnection.WorkerThread

Field Summary

Fields inherited from class org.freedesktop.dbus.AbstractConnection

addr, connected, EXCEPTION_DEBUG, exportedObjects, fallbackcontainer, handledSignals, importedObjects, pendingCallbackReplys, pendingCallbacks, pendingCalls, run, runnables, sender, thread, TIMEOUT, transport, weakreferences, workers

Constructor Summary

Constructors

Constructor and Description
DirectConnection(String address) Create a direct connection to another application.

Method Summary

Modifier and Type	Method and Description
protected <T extends DBusSignal> void	addSigHandler(DBusMatchRule rule, DBusSigHandler<T> handler)
static String	createDynamicSession() Creates a bus address for a randomly generated abstract unix socket.
static String	createDynamicTCPSession() Creates a bus address for a randomly generated tcp port.
DBusInterface	getRemoteObject(String objectpath) Return a reference to a remote object.
DBusInterface	getRemoteObject(String objectpath, Class<? extends DBusInterface> type) Return a reference to a remote object.
protected <T extends DBusSignal> void	removeSigHandler(DBusMatchRule rule, DBusSigHandler<T> handler)

Methods inherited from class org.freedesktop.dbus.AbstractConnection

addFallback, addSigHandler, addSigHandler, addSigHandlerWithoutMatch, callMethodAsync, callWithCallback, changeThreadCount, disconnect, exportObject, finalize, getAddress, getCallInfo, getError, listen, removeFallback, removeSigHandler, removeSigHandler, sendMessage, sendSignal, setWeakReferences, unExportObject

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DirectConnection

public DirectConnection(String address)
                 throws DBusException

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.

Throws:

DBusException - on error

Method Detail

createDynamicTCPSession

public static String createDynamicTCPSession()

Creates a bus address for a randomly generated tcp port.

Returns:

a random bus address.

createDynamicSession

public static String createDynamicSession()

Creates a bus address for a randomly generated abstract unix socket.

Returns:

a random bus address.

getRemoteObject

public DBusInterface getRemoteObject(String objectpath)
                              throws DBusException

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)
                              throws DBusException

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)
                                                throws DBusException

Specified by:

removeSigHandler in class AbstractConnection

Throws:

DBusException

addSigHandler

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

Specified by:

addSigHandler in class AbstractConnection

Throws:

DBusException