Package org.eclipse.ltk.core.refactoring.history

Interface IRefactoringHistoryService

public interface IRefactoringHistoryService

Interface for a refactoring history service. A refactoring history service provides methods to register refactoring history listeners, refactoring execution listeners and facilities to query the global refactoring history index for specific refactoring histories. Additionally, methods are provided which read or write refactoring information. The refactoring history service only returns refactorings which have contributed a refactoring descriptor via their change object.

An instance of a refactoring history service may be obtained by calling RefactoringCore.getHistoryService().

All time stamps are measured as the milliseconds since January 1, 1970, 00:00:00 GMT.

Note: this interface is not intended to be implemented by clients.

Since:

3.2

See Also:

RefactoringCore, IRefactoringHistoryListener, IRefactoringExecutionListener, RefactoringHistory, RefactoringDescriptorProxy

Restriction:

This interface is not intended to be implemented by clients.

Restriction:

This interface is not intended to be extended by clients.

Method Summary

Modifier and Type	Method	Description
void	addExecutionListener(IRefactoringExecutionListener listener)	Adds the specified refactoring execution listener to this service.
void	addHistoryListener(IRefactoringHistoryListener listener)	Adds the specified refactoring history listener to this service.
void	connect()	Connects the refactoring history service to the workbench's operation history if necessary and increments an internal counter.
void	disconnect()	Disconnects the refactoring history service from the workbench's operation history if necessary and decrements an internal counter.
RefactoringHistory	getProjectHistory(IProject project, long start, long end, int flags, IProgressMonitor monitor)	Returns a project refactoring history for the specified project.
RefactoringHistory	getProjectHistory(IProject project, IProgressMonitor monitor)	Returns a project refactoring history for the specified project.
RefactoringHistory	getRefactoringHistory(IProject[] projects, long start, long end, int flags, IProgressMonitor monitor)	Returns the combined refactoring history for the specified projects.
RefactoringHistory	getRefactoringHistory(IProject[] projects, IProgressMonitor monitor)	Returns the combined refactoring history for the specified projects.
RefactoringHistory	getWorkspaceHistory(long start, long end, IProgressMonitor monitor)	Returns the workspace refactoring history.
RefactoringHistory	getWorkspaceHistory(IProgressMonitor monitor)	Returns the workspace refactoring history.
RefactoringHistory	readRefactoringHistory(InputStream stream, int flags)	Reads a refactoring history from the input stream.
void	removeExecutionListener(IRefactoringExecutionListener listener)	Removes the specified refactoring execution listener from this service.
void	removeHistoryListener(IRefactoringHistoryListener listener)	Removes the specified refactoring history listener from this service.
void	writeRefactoringDescriptors(RefactoringDescriptorProxy[] proxies, OutputStream stream, int flags, boolean time, IProgressMonitor monitor)	Writes the specified refactoring descriptor proxies to the output stream.
void	writeRefactoringSession(RefactoringSessionDescriptor descriptor, OutputStream stream, boolean time)	Writes the specified refactoring session descriptor to the output stream.

Method Detail

addExecutionListener

void addExecutionListener(IRefactoringExecutionListener listener)

Adds the specified refactoring execution listener to this service.

If the listener is already registered with the service, nothing happens.

Parameters:

listener - the listener to add

addHistoryListener

void addHistoryListener(IRefactoringHistoryListener listener)

Adds the specified refactoring history listener to this service.

If the listener is already registered with the service, nothing happens.

Parameters:

listener - the listener to add

connect

void connect()

Connects the refactoring history service to the workbench's operation history if necessary and increments an internal counter.

If the service is already connected, nothing happens.

Every call to connect() must be balanced with a corresponding call to disconnect().

disconnect

void disconnect()

Disconnects the refactoring history service from the workbench's operation history if necessary and decrements an internal counter.

If the service is not connected, nothing happens. If the service is connected, all resources acquired since the corresponding call to connect() are released.

Every call to disconnect() must be balanced with a corresponding call to connect().

getProjectHistory

RefactoringHistory getProjectHistory(IProject project,
                                     IProgressMonitor monitor)

Returns a project refactoring history for the specified project.

Clients must connect to the refactoring history service first before calling this method.

Parameters:

project - the project, which must exist

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Returns:

the project refactoring history

getProjectHistory

RefactoringHistory getProjectHistory(IProject project,
                                     long start,
                                     long end,
                                     int flags,
                                     IProgressMonitor monitor)

Returns a project refactoring history for the specified project.

Clients must connect to the refactoring history service first before calling this method.

Note that calling this method with a flag argument unequal to RefactoringDescriptor#NONE may result in a performance degradation, since the actual descriptors have to be eagerly resolved. This in turn results in faster execution of any subsequent calls to RefactoringDescriptorProxy.requestDescriptor(IProgressMonitor) which try to request a descriptor from the returned refactoring history.

Parameters:

project - the project, which must exist

start - the start time stamp, inclusive

end - the end time stamp, inclusive

flags - the refactoring descriptor flags which must be present in order to be returned in the refactoring history object, or RefactoringDescriptor#NONE

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Returns:

the project refactoring history

getRefactoringHistory

RefactoringHistory getRefactoringHistory(IProject[] projects,
                                         IProgressMonitor monitor)

Returns the combined refactoring history for the specified projects.

Clients must connect to the refactoring history service first before calling this method.

Parameters:

projects - the projects, which must exist

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Returns:

the combined refactoring history

getRefactoringHistory

RefactoringHistory getRefactoringHistory(IProject[] projects,
                                         long start,
                                         long end,
                                         int flags,
                                         IProgressMonitor monitor)

Returns the combined refactoring history for the specified projects.

Clients must connect to the refactoring history service first before calling this method.

Note that calling this method with a flag argument unequal to RefactoringDescriptor#NONE may result in a performance degradation, since the actual descriptors have to be eagerly resolved. This in turn results in faster execution of any subsequent calls to RefactoringDescriptorProxy.requestDescriptor(IProgressMonitor) which try to request a descriptor from the returned refactoring history.

Parameters:

projects - the projects, which must exist

start - the start time stamp, inclusive

end - the end time stamp, inclusive

flags - the refactoring descriptor flags which must be present in order to be returned in the refactoring history object, or RefactoringDescriptor#NONE

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Returns:

the combined refactoring history

getWorkspaceHistory

RefactoringHistory getWorkspaceHistory(IProgressMonitor monitor)

Returns the workspace refactoring history.

Clients must connect to the refactoring history service first before calling this method.

Parameters:

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Returns:

the workspace refactoring history

getWorkspaceHistory

RefactoringHistory getWorkspaceHistory(long start,
                                       long end,
                                       IProgressMonitor monitor)

Returns the workspace refactoring history.

Clients must connect to the refactoring history service first before calling this method.

Parameters:

start - the start time stamp, inclusive

end - the end time stamp, inclusive

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Returns:

the workspace refactoring history

readRefactoringHistory

RefactoringHistory readRefactoringHistory(InputStream stream,
                                          int flags)
                                   throws CoreException

Reads a refactoring history from the input stream.

The resulting refactoring history contains resolved refactoring descriptors and should not be held on to.

It is the responsibility of the caller to close the input stream.

Parameters:

stream - a UTF-8 input stream where to read the refactoring history from

flags - the refactoring descriptor flags to filter the refactoring descriptors

Returns:

a refactoring history containing the filtered refactoring descriptors

Throws:

CoreException - if an error occurs while reading form the input stream. Reasons include:

• The input stream contains no version information for the refactoring history.
• The input stream contains an unsupported version of a refactoring history.
• An I/O error occurs while reading the refactoring history from the input stream.

See Also:

RefactoringDescriptor.NONE, RefactoringDescriptor.STRUCTURAL_CHANGE, RefactoringDescriptor.BREAKING_CHANGE, IRefactoringCoreStatusCodes.REFACTORING_HISTORY_IO_ERROR, IRefactoringCoreStatusCodes.UNSUPPORTED_REFACTORING_HISTORY_VERSION, IRefactoringCoreStatusCodes.MISSING_REFACTORING_HISTORY_VERSION

removeExecutionListener

void removeExecutionListener(IRefactoringExecutionListener listener)

Removes the specified refactoring execution listener from this service.

If the listener is not registered with the service, nothing happens.

Parameters:

listener - the listener to remove

removeHistoryListener

void removeHistoryListener(IRefactoringHistoryListener listener)

Removes the specified refactoring history listener from this service.

If the listener is not registered with the service, nothing happens.

Parameters:

listener - the listener to remove

writeRefactoringDescriptors

void writeRefactoringDescriptors(RefactoringDescriptorProxy[] proxies,
                                 OutputStream stream,
                                 int flags,
                                 boolean time,
                                 IProgressMonitor monitor)
                          throws CoreException

Writes the specified refactoring descriptor proxies to the output stream. Refactoring descriptor proxies which cannot be resolved are automatically skipped.

It is the responsibility of the caller to close the output stream.

Parameters:

proxies - the refactoring descriptor proxies

stream - a UTF-8 output stream where to write the refactoring descriptors to

flags - the flags which must be present in order to be written to the output stream, or RefactoringDescriptor#NONE

time - true to write time information associated with the refactorings, false otherwise

monitor - the progress monitor to use, or null if no progress monitoring or cancelation is desired

Throws:

CoreException - if an error occurs while writing to the output stream. Reasons include:

• The refactoring descriptors have an illegal format, contain illegal arguments or otherwise illegal information.
• An I/O error occurs while writing the refactoring descriptors to the output stream.

See Also:

RefactoringDescriptor.NONE, RefactoringDescriptor.STRUCTURAL_CHANGE, RefactoringDescriptor.BREAKING_CHANGE, IRefactoringCoreStatusCodes.REFACTORING_HISTORY_FORMAT_ERROR, IRefactoringCoreStatusCodes.REFACTORING_HISTORY_IO_ERROR

writeRefactoringSession

void writeRefactoringSession(RefactoringSessionDescriptor descriptor,
                             OutputStream stream,
                             boolean time)
                      throws CoreException

Writes the specified refactoring session descriptor to the output stream.

It is the responsibility of the caller to close the output stream.

Parameters:

descriptor - the refactoring session descriptor to write

stream - a UTF-8 output stream where to write the refactoring session to

time - true to write time information associated with the refactorings, false otherwise

Throws:

CoreException - if an error occurs while writing to the output stream. Reasons include:

• The refactoring descriptors have an illegal format, contain illegal arguments or otherwise illegal information.
• An I/O error occurs while writing the refactoring descriptors to the output stream.

See Also:

IRefactoringCoreStatusCodes.REFACTORING_HISTORY_FORMAT_ERROR, IRefactoringCoreStatusCodes.REFACTORING_HISTORY_IO_ERROR