com.sun.star.lib.uno.environments.remote

Class remote_environment

java.lang.Object

com.sun.star.lib.uno.environments.remote.remote_environment

All Implemented Interfaces:

IEnvironment

public final class remote_environment
extends java.lang.Object
implements IEnvironment

Constructor Summary

Constructors

Constructor and Description
remote_environment(java.lang.Object context)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	getContext() Gets the context of this environment.
java.lang.String	getName() Gets the name of this environment.
java.lang.Object	getRegisteredInterface(java.lang.String oid, Type type) Retrieves a registered object, specified by OID and UNO interface type.
java.lang.String	getRegisteredObjectIdentifier(java.lang.Object object) Retrieves the OID for a registered object.
void	list() Lists the registered objects to System.out.
java.lang.Object	registerInterface(java.lang.Object object, java.lang.String[] oid, Type type) Registers one UNO interface facet of an object.
void	revokeInterface(java.lang.String oid, Type type) Explicitly revokes a UNO interface facet.

Methods inherited from class java.lang.Object

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

Constructor Detail

remote_environment

public remote_environment(java.lang.Object context)

Method Detail

getContext

public java.lang.Object getContext()

Description copied from interface: IEnvironment

Gets the context of this environment.

Specified by:

getContext in interface IEnvironment

Returns:

the context of this environment

getName

public java.lang.String getName()

Description copied from interface: IEnvironment

Gets the name of this environment.

Specified by:

getName in interface IEnvironment

Returns:

the name of this environment

registerInterface

public java.lang.Object registerInterface(java.lang.Object object,
                                          java.lang.String[] oid,
                                          Type type)

Description copied from interface: IEnvironment

Registers one UNO interface facet of an object.

Such an object will typically be one of three things:

• A local Java object, to be mapped out of this environment via a given bridge.
• A proxy object, mapped into this environment via some bridge B1, and now to be mapped out of this environment via a given bridge B2.
• A proxy object, created as a remote object is mapped into this environment via a given bridge.

The object actually registered may differ from the specified object that is passed as an argument. This enables an environment to work in a multi-threaded scenario, where two threads can call registerInterface for the same combination of oid and type at the same time; the race condition is solved by letting one of the calls register its argument object, ignoring the argument object of the other call, and letting both calls return the same object.

The registered object is held only weakly by the environment. After a call to registerInterface, a call to getRegisteredInterface only succeeds as long as the registered object is still strongly reachable, and the registered object has not been explicitly revoked by calling revokeInterface.

Specified by:

registerInterface in interface IEnvironment

Parameters:

object - the object to register; must be non-null

oid - in-out parameter containing the OID of object. This must be a non-null reference to an array of length at least one; the zeroth element is used to pass the argument in and out. If the zeroth element is null on input, the OID will be computed and passed out (that is, the zeroth element will never be null upon normal return).

type - the UNO interface type to register. This argument must be non-null, and must denote a UNO interface type. The given object should implement this type.

Returns:

the registered object (may differ from the object passed in); will never be null

revokeInterface

public void revokeInterface(java.lang.String oid,
                            Type type)

Description copied from interface: IEnvironment

Explicitly revokes a UNO interface facet.

Calls to registerInterface and revokeInterface must be paired. A facet is only removed from the environment when it has been revoked as often as it has been registered. This may change in the future, so that a facet would be removed upon the first call to revokeInterface (and calls to revokeInterface would no longer be necessary if the calling code does not want to control the temporal extent of the registration).

It is not an error if the specified facet is not registered at this environment (either because no corresponding object has ever been registered, or it has been explicitly revoked, or it is no longer strongly reachable). In such a case, this method simply does nothing.

Specified by:

revokeInterface in interface IEnvironment

Parameters:

oid - the OID of the object to revoke; must be non-null

type - the UNO interface type of the object to revoke. This argument must be non-null, and must denote a UNO interface type.

getRegisteredInterface

public java.lang.Object getRegisteredInterface(java.lang.String oid,
                                               Type type)

Description copied from interface: IEnvironment

Retrieves a registered object, specified by OID and UNO interface type.

Specified by:

getRegisteredInterface in interface IEnvironment

Parameters:

oid - the OID of the object to retrieve; must be non-null

type - the UNO interface type of the object to retrieve. This argument must be non-null, and must denote a UNO interface type.

Returns:

the registered object, or null if none is found

getRegisteredObjectIdentifier

public java.lang.String getRegisteredObjectIdentifier(java.lang.Object object)

Description copied from interface: IEnvironment

Retrieves the OID for a registered object.

Specified by:

getRegisteredObjectIdentifier in interface IEnvironment

Parameters:

object - a registered object; must be non-null

Returns:

the OID of the object; will never be null

list

public void list()

Description copied from interface: IEnvironment

Lists the registered objects to System.out.

This is for debug purposes.

Specified by:

list in interface IEnvironment