com.nomagic.magicdraw.openapi.uml

Class SessionManager

java.lang.Object

com.nomagic.magicdraw.openapi.uml.SessionManager

@OpenApiAll
public class SessionManager
extends java.lang.Object

The singleton manager for Elements editing in the model. In order to edit some Element session with this manager must be created. After Element editing session must be closed. After that all changes will be applied to model and registered in command history(for undo/redo). Only one session can be active. The sample of code is :

Class classA = ...;

SessionManager.getInstance().createSession("Edit class A");
classA.setName("nameB");
Operation operation = Project.getProject(classA).getElementsFactory().createOperationInstance();
ModelElementsManager.getInstance().addElement(operation, classA);
SessionManager.getInstance().closeSession();
Not editable(read only) Elements cannot be edited.

Method Summary

Modifier and Type	Method and Description
<V> V	callInsideSession(java.lang.String sessionName, java.util.concurrent.Callable<V> callable) Calls given callable inside session.
void	cancelSession() Closes active session.
void	cancelSession(Project project) Closes active session in a given project.
void	checkReadOnly(Element target) Tests if the given element is read only.
void	checkSessionExistance() Checks if the session is created.
void	checkSessionExistance(Project project) Checks if the session is created in a given project.
void	closeSession() Closes active session in an active project.
void	closeSession(Project project) Closes active session in a given project.
void	createSession(Project project, java.lang.String sessionName) Creates new session in a given project.
void	createSession(java.lang.String sessionName) Creates new session in an active project.
void	executeInsideSession(java.lang.String sessionName, java.lang.Runnable runnable) Executes given runnable inside session.
static SessionManager	getInstance() Returns an instance of this manager.
boolean	isSessionCreated() Returns true if some session is created in an active project.
boolean	isSessionCreated(Project project) Returns true if some session is created in a given project.
<V> V	runInSession(java.lang.String sessionName, java.util.concurrent.Callable<V> callable) Deprecated. use callInsideSession(String, Callable)
void	runInSession(java.lang.String sessionName, java.lang.Runnable runnable) Deprecated. use executeInsideSession(String, Runnable)

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static SessionManager getInstance()

Returns an instance of this manager.

Returns:

instance of this manager.

closeSession

public void closeSession()

Closes active session in an active project. All changed made to registered ModelElements will be recorder in the command history. Session cannot be closed if it was not created with method createSession before that.

Throws:

java.lang.IllegalStateException - if session was not created.

See Also:

createSession(java.lang.String)

closeSession

public void closeSession(Project project)

Closes active session in a given project. All changed made to registered ModelElements will be recorder in the command history. Session cannot be closed if it was not created with method createSession before that.

Parameters:

project - project

Throws:

java.lang.IllegalStateException - if session was not created.

See Also:

createSession(java.lang.String)

cancelSession

public void cancelSession()

Closes active session. All changed made to registered ModelElements will be rollbacked and command will be removed from the command history list. Session cannot be canceled if it was not created with method createSession before that.

Throws:

java.lang.IllegalStateException - if session was not created.

See Also:

createSession(java.lang.String)

cancelSession

public void cancelSession(Project project)

Closes active session in a given project. All changed made to registered ModelElements will be rollbacked and command will be removed from the command history list. Session cannot be canceled if it was not created with method createSession before that.

Parameters:

project - project

Throws:

java.lang.IllegalStateException - if session was not created.

See Also:

createSession(java.lang.String)

checkSessionExistance

public void checkSessionExistance()

Checks if the session is created.

Throws:

java.lang.IllegalStateException - if session is not created at the current moment.

See Also:

isSessionCreated()

checkSessionExistance

public void checkSessionExistance(Project project)

Checks if the session is created in a given project.

Parameters:

project - project

Throws:

java.lang.IllegalStateException - if session is not created at the current moment.

See Also:

isSessionCreated()

createSession

public void createSession(java.lang.String sessionName)

Creates new session in an active project. Session cannot be created if other session was not closed with closeSession method.

Parameters:

sessionName - name of session which will be the name of command the command history(undo/redo).

Throws:

java.lang.IllegalStateException - if other session is already created and not closed.

See Also:

closeSession()

createSession

public void createSession(Project project,
                          java.lang.String sessionName)

Creates new session in a given project. Session cannot be created if other session was not closed with closeSession method.

Parameters:

project - project

sessionName - name of session which will be the name of command the command history(undo/redo).

Throws:

java.lang.IllegalStateException - if other session is already created and not closed.

See Also:

closeSession()

isSessionCreated

public boolean isSessionCreated()

Returns true if some session is created in an active project.

Returns:

true, if session is created(active).

See Also:

createSession(java.lang.String)

isSessionCreated

public boolean isSessionCreated(Project project)

Returns true if some session is created in a given project.

Parameters:

project - project

Returns:

true, if session is created(active).

See Also:

createSession(java.lang.String)

checkReadOnly

public void checkReadOnly(Element target)
                   throws ReadOnlyElementException

Tests if the given element is read only.

Parameters:

target - element to check

Throws:

ReadOnlyElementException - exception if given element is read only.

runInSession

@Deprecated
public void runInSession(java.lang.String sessionName,
                                     java.lang.Runnable runnable)

Deprecated. use executeInsideSession(String, Runnable)

Execute the given runnable in MD session. runInSession() will check whether a session has been already created. If not, it creates a new session. After executed, it closes its created session. The method never cancels the session even exception occurs. A runnable needs to cancel the session explicitly in case of exception.

Parameters:

sessionName - session name if needs to be created

runnable - runnable to run

executeInsideSession

public void executeInsideSession(java.lang.String sessionName,
                                 java.lang.Runnable runnable)

Executes given runnable inside session. Creates new session if session is not created yet, after execution new session is closed (canceled if exception occurs on execution).

Parameters:

sessionName - new session name.

runnable - runnable to execute.

runInSession

@Deprecated
public <V> V runInSession(java.lang.String sessionName,
                                      java.util.concurrent.Callable<V> callable)

Deprecated. use callInsideSession(String, Callable)

Execute the given callable in MD session. runInSession() will check whether a session has been already created. If not, it creates a new session. After executed, it closes its created session. The method never cancels the session even exception occurs. A callable needs to cancel the session explicitly in case of exception.

Type Parameters:

V - the return type

Parameters:

sessionName - the session name

callable - the callable object

Returns:

the return value from callable.

callInsideSession

public <V> V callInsideSession(java.lang.String sessionName,
                               java.util.concurrent.Callable<V> callable)
                        throws java.lang.Exception

Calls given callable inside session. Creates new session if session is not created yet, after execution new session is closed (canceled if exception occurs on calling).

Type Parameters:

V - return type.

Parameters:

sessionName - new session name.

callable - callable to call.

Throws:

java.lang.Exception