Package org.apache.jackrabbit.server.io

Class VersionHistoryHandler

java.lang.Object

org.apache.jackrabbit.server.io.VersionHistoryHandler

All Implemented Interfaces:

IOHandler, PropertyHandler

public class VersionHistoryHandler
extends Object
implements IOHandler, PropertyHandler

VersionHistoryHandler...

Constructor Summary

Constructors

Constructor	Description
VersionHistoryHandler()
VersionHistoryHandler(IOManager ioManager)

Method Summary

Modifier and Type	Method	Description
boolean	canExport(ExportContext context, boolean isCollection)	Returns true, if this handler can run a successful export based on the specified context.
boolean	canExport(ExportContext context, DavResource resource)	Returns true, if this handler can run a successful export based on the specified context and resource.
boolean	canExport(PropertyExportContext context, boolean isCollection)	Returns true, if this handler can run a successful export based on the specified context.
boolean	canImport(ImportContext context, boolean isCollection)	Returns true, if this handler can run a successful import based on the specified context.
boolean	canImport(ImportContext context, DavResource resource)	Returns true, if this handler can run a successful import based on the specified context and resource.
boolean	canImport(PropertyImportContext context, boolean isCollection)	Returns true, if this handler can run a property import based on the specified context.
boolean	exportContent(ExportContext context, boolean isCollection)	Runs the export for the given context.
boolean	exportContent(ExportContext context, DavResource resource)	Runs the export for the given context and resource.
boolean	exportProperties(PropertyExportContext exportContext, boolean isCollection)	Exports properties to the given context.
IOManager	getIOManager()	Returns the IOManager that called this handler or null.
String	getName()	Returns a human readable name for this IOHandler.
boolean	importContent(ImportContext context, boolean isCollection)	Runs the import for the given context and indicates by a boolean return value, if the import could be completed successfully.
boolean	importContent(ImportContext context, DavResource resource)	Runs the import for the given context and resource.
Map<? extends PropEntry,?>	importProperties(PropertyImportContext importContext, boolean isCollection)	Imports, modifies or removes properties according the the change list available from the import context.
void	setIOManager(IOManager ioManager)	Sets the IOManager that called this handler.

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionHistoryHandler

public VersionHistoryHandler()

VersionHistoryHandler

public VersionHistoryHandler(IOManager ioManager)

Method Detail

getIOManager

public IOManager getIOManager()

Description copied from interface: IOHandler

Returns the IOManager that called this handler or null.

Specified by:

getIOManager in interface IOHandler

setIOManager

public void setIOManager(IOManager ioManager)

Description copied from interface: IOHandler

Sets the IOManager that called this handler.

Specified by:

setIOManager in interface IOHandler

getName

public String getName()

Description copied from interface: IOHandler

Returns a human readable name for this IOHandler.

Specified by:

getName in interface IOHandler

canImport

public boolean canImport(ImportContext context,
                         boolean isCollection)

Description copied from interface: IOHandler

Returns true, if this handler can run a successful import based on the specified context.

Specified by:

canImport in interface IOHandler

canImport

public boolean canImport(ImportContext context,
                         DavResource resource)

Description copied from interface: IOHandler

Returns true, if this handler can run a successful import based on the specified context and resource. A simple implementation may choose to return the same as IOHandler.canImport(ImportContext, boolean) where the isCollection flag is determined by DavResource.isCollection().

Specified by:

canImport in interface IOHandler

importContent

public boolean importContent(ImportContext context,
                             boolean isCollection)
                      throws IOException

Description copied from interface: IOHandler

Runs the import for the given context and indicates by a boolean return value, if the import could be completed successfully. If the specified ImportContext does not provide a stream the implementation is free, to only import properties of to refuse the import.

Please note, that it is the responsibility of the specified ImportContext to assert, that its stream is not consumed multiple times when being passed to a chain of IOHandlers.

Specified by:

importContent in interface IOHandler

Returns:

true if the import was successful.

Throws:

IOException - if an unexpected error occurs or if this method has been called although IOHandler.canImport(ImportContext, boolean) returns false.

importContent

public boolean importContent(ImportContext context,
                             DavResource resource)
                      throws IOException

Description copied from interface: IOHandler

Runs the import for the given context and resource. It indicates by a boolean return value, if the import could be completed successfully. If the specified ImportContext does not provide a stream the implementation is free, to only import properties of to refuse the import. A simple implementation may return the same as IOHandler.importContent(ImportContext, boolean) where the isCollection flag is determined by DavResource.isCollection()

Please note, that it is the responsibility of the specified ImportContext to assert, that its stream is not consumed multiple times when being passed to a chain of IOHandlers.

Specified by:

importContent in interface IOHandler

Returns:

Throws:

IOException - if an unexpected error occurs or if this method has been called although IOHandler.canImport(ImportContext, DavResource) returns false.

See Also:

IOHandler.importContent(ImportContext, boolean)

canExport

public boolean canExport(ExportContext context,
                         boolean isCollection)

Description copied from interface: IOHandler

Returns true, if this handler can run a successful export based on the specified context.

Specified by:

canExport in interface IOHandler

canExport

public boolean canExport(ExportContext context,
                         DavResource resource)

Description copied from interface: IOHandler

Returns true, if this handler can run a successful export based on the specified context and resource. A simple implementation may choose to return the same as IOHandler.canExport(ExportContext, boolean) where the isCollection flag is determined by DavResource.isCollection().

Specified by:

canExport in interface IOHandler

exportContent

public boolean exportContent(ExportContext context,
                             boolean isCollection)
                      throws IOException

Description copied from interface: IOHandler

Runs the export for the given context. It indicates by a boolean return value, if the export could be completed successfully. If the specified ExportContext does not provide a stream the implementation should set the properties only and ignore the content to be exported. A simple implementation may return the same as IOHandler.exportContent(ExportContext, boolean) where the isCollection flag is determined by DavResource.isCollection()

Please note, that it is the responsibility of the specified ExportContext to assert, that its stream is not written multiple times when being passed to a chain of IOHandlers.

Specified by:

exportContent in interface IOHandler

Returns:

Throws:

IOException - if an unexpected error occurs or if this method has been called although IOHandler.canExport(ExportContext, boolean) returns false.

exportContent

public boolean exportContent(ExportContext context,
                             DavResource resource)
                      throws IOException

Description copied from interface: IOHandler

Runs the export for the given context and resource. It indicates by a boolean return value, if the export could be completed successfully. If the specified ExportContext does not provide a stream the implementation should set the properties only and ignore the content to be exported. A simple implementation may return the same as IOHandler.exportContent(ExportContext, boolean) where the isCollection flag is determined by DavResource.isCollection()

Please note, that it is the responsibility of the specified ExportContext to assert, that its stream is not written multiple times when being passed to a chain of IOHandlers.

Specified by:

exportContent in interface IOHandler

Returns:

Throws:

IOException - if an unexpected error occurs or if this method has been called although IOHandler.canExport(ExportContext, DavResource) returns false.

canImport

public boolean canImport(PropertyImportContext context,
                         boolean isCollection)

Description copied from interface: PropertyHandler

Returns true, if this handler can run a property import based on the specified context.

Specified by:

canImport in interface PropertyHandler

Returns:

true if this PropertyHandler can import properties given the specified parameters.

importProperties

public Map<? extends PropEntry,?> importProperties(PropertyImportContext importContext,
                                                         boolean isCollection)
                                                  throws RepositoryException

Description copied from interface: PropertyHandler

Imports, modifies or removes properties according the the change list available from the import context. Note, that according to JSR 170 setting a property value to null is equivalent to its removal.

The return value of this method must be used to provided detailed information about any kind of failures.

Specified by:

importProperties in interface PropertyHandler

Returns:

Map listing those properties that failed to be updated. An empty map indicates a successful import for all properties listed in the context.

Throws:

RepositoryException - If PropertyHandler.canImport(PropertyImportContext, boolean) returns false for the given parameters or if some other unrecoverable error occurred. Note, that normal failure of a property update must be reported with the return value and should not result in an exception.

canExport

public boolean canExport(PropertyExportContext context,
                         boolean isCollection)

Description copied from interface: PropertyHandler

Returns true, if this handler can run a successful export based on the specified context.

Specified by:

canExport in interface PropertyHandler

Returns:

true if this PropertyHandler is export properties given the specified parameters.

exportProperties

public boolean exportProperties(PropertyExportContext exportContext,
                                boolean isCollection)
                         throws RepositoryException

Description copied from interface: PropertyHandler

Exports properties to the given context. Note that the export must be consistent with properties that might be exposed by content export such as defined by IOHandler.exportContent(ExportContext, boolean).

Specified by:

exportProperties in interface PropertyHandler

Returns:

true if the export succeeded.

Throws:

RepositoryException - If an attempt is made to export properties even if PropertyHandler.canExport(PropertyExportContext, boolean) returns false or if some other unrecoverable error occurs.