net.sf.webdav.spi

Interface IWebdavStore

All Known Implementing Classes:

LocalFileSystemStore

public interface IWebdavStore

Interface for simple implementation of any store for the WebdavServlet

based on the BasicWebdavStore from Oliver Zeigermann, that was part of the Webdav Construcktion Kit from slide

Method Summary

Methods

Modifier and Type	Method and Description
ITransaction	begin(Principal principal) Indicates that a new request or transaction with this store involved has been started.
void	checkAuthentication(ITransaction transaction) Checks if authentication information passed in is valid.
void	commit(ITransaction transaction) Indicates that all changes done inside this request shall be made permanent and any transactions, connections and other temporary resources shall be terminated.
void	createFolder(ITransaction transaction, String folderUri) Creates a folder at the position specified by folderUri.
void	createResource(ITransaction transaction, String resourceUri) Creates a content resource at the position specified by resourceUri.
String[]	getChildrenNames(ITransaction transaction, String folderUri) Gets the names of the children of the folder specified by folderUri.
InputStream	getResourceContent(ITransaction transaction, String resourceUri) Gets the content of the resource specified by resourceUri.
long	getResourceLength(ITransaction transaction, String resourceUri) Gets the length of the content resource specified by resourceUri.
StoredObject	getStoredObject(ITransaction transaction, String uri) Gets the storedObject specified by uri
void	removeObject(ITransaction transaction, String uri) Removes the object specified by uri.
void	rollback(ITransaction transaction) Indicates that all changes done inside this request shall be undone and any transactions, connections and other temporary resources shall be terminated.
long	setResourceContent(ITransaction transaction, String resourceUri, InputStream content, long contentLength) Sets / stores the content of the resource specified by resourceUri.

Method Detail

begin

ITransaction begin(Principal principal)
                   throws WebdavException

Indicates that a new request or transaction with this store involved has been started. The request will be terminated by either commit(ITransaction transaction) or rollback(ITransaction transaction). If only non-read methods have been called, the request will be terminated by a commit(ITransaction transaction). This method will be called by (@link WebdavStoreAdapter} at the beginning of each request.

Parameters:

principal - the principal that started this request or null if there is non available

Throws:

WebdavException

checkAuthentication

void checkAuthentication(ITransaction transaction)
                         throws WebdavException

Checks if authentication information passed in is valid. If not throws an exception.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

Throws:

WebdavException

commit

void commit(ITransaction transaction)
            throws WebdavException

Indicates that all changes done inside this request shall be made permanent and any transactions, connections and other temporary resources shall be terminated.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

Throws:

WebdavException - if something goes wrong on the store level

rollback

void rollback(ITransaction transaction)
              throws WebdavException

Indicates that all changes done inside this request shall be undone and any transactions, connections and other temporary resources shall be terminated.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

Throws:

WebdavException - if something goes wrong on the store level

createFolder

void createFolder(ITransaction transaction,
                String folderUri)
                  throws WebdavException

Creates a folder at the position specified by folderUri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

folderUri - URI of the folder

Throws:

WebdavException - if something goes wrong on the store level

createResource

void createResource(ITransaction transaction,
                  String resourceUri)
                    throws WebdavException

Creates a content resource at the position specified by resourceUri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

resourceUri - URI of the content resource

Throws:

WebdavException - if something goes wrong on the store level

getResourceContent

InputStream getResourceContent(ITransaction transaction,
                             String resourceUri)
                               throws WebdavException

Gets the content of the resource specified by resourceUri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

resourceUri - URI of the content resource

Returns:

input stream you can read the content of the resource from

Throws:

WebdavException - if something goes wrong on the store level

setResourceContent

long setResourceContent(ITransaction transaction,
                      String resourceUri,
                      InputStream content,
                      long contentLength)
                        throws WebdavException

Sets / stores the content of the resource specified by resourceUri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

resourceUri - URI of the resource where the content will be stored

content - input stream from which the content will be read from

contentLength - The length of the content.

Returns:

lenght of resource

Throws:

WebdavException - if something goes wrong on the store level

getChildrenNames

String[] getChildrenNames(ITransaction transaction,
                        String folderUri)
                          throws WebdavException

Gets the names of the children of the folder specified by folderUri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

folderUri - URI of the folder

Returns:

a (possibly empty) list of children, or null if the uri points to a file

Throws:

WebdavException - if something goes wrong on the store level

getResourceLength

long getResourceLength(ITransaction transaction,
                     String resourceUri)
                       throws WebdavException

Gets the length of the content resource specified by resourceUri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

resourceUri - URI of the content resource

Returns:

length of the resource in bytes, -1 declares this value as invalid and asks the adapter to try to set it from the properties if possible

Throws:

WebdavException - if something goes wrong on the store level

removeObject

void removeObject(ITransaction transaction,
                String uri)
                  throws WebdavException

Removes the object specified by uri.

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

uri - URI of the object, i.e. content resource or folder

Throws:

WebdavException - if something goes wrong on the store level

getStoredObject

StoredObject getStoredObject(ITransaction transaction,
                           String uri)
                             throws WebdavException

Gets the storedObject specified by uri

Parameters:

transaction - indicates that the method is within the scope of a WebDAV transaction

uri - URI

Returns:

StoredObject

Throws:

WebdavException