com.atlassian.confluence.pages.persistence.dao
Interface AttachmentDao

All Known Implementing Classes:

AbstractHibernateAttachmentDao, CachingAttachmentDao, NonTransactionalHibernateAttachmentDao, TransactionalHibernateAttachmentDao, WebDavAttachmentDao

public interface AttachmentDao

This interface defines the methods for classes acting as a DAO at the level of meta-data storage for Attachments.

Nested Class Summary

static interface	AttachmentDao.AttachmentCopier
static interface	AttachmentDao.AttachmentMigrator

Method Summary

void	afterMigrationFrom() Perform any tasks necessary after Attachment data has been moved from this data store to another.
int	countLatestVersionsOfAttachments(ContentEntityObject content)
java.util.List<Attachment>	findAll() Retrieves the latest versions of all Attachments Use of this method is discouraged when there are a large amount of Attachments.
java.util.List<Attachment>	findAllVersions(Attachment attachment)
java.util.Iterator<Attachment>	findLatestVersionsIterator() Retrieves the latest versions of all Attachments and returns an Iterator to the results.
Attachment	getAttachment(ContentEntityObject content, java.lang.String fileName, int version) Return the attachment on the specified content with the given filename and version.
java.io.InputStream	getAttachmentData(Attachment attachment) Retrieves the InputStream representing the data for attachment
AttachmentDataStorageType	getBackingStorageType() Returns the backing storage type.
Attachment	getById(long id) Returns the attachment with the given persistent ID.
AttachmentDao.AttachmentCopier	getCopier(AttachmentDao destinationDao) Get a copier object to copy attachments between data stores The source data store will remain untouched
java.util.List<Attachment>	getLastAddedVersionsOf(Attachment attachment) Retrieves all the last added versions for each user who has added a version of the attachment That is, if a user has added multiple versions, only the latest added version will be added to the list returned.
Attachment	getLatestAttachment(ContentEntityObject content, java.lang.String fileName) Return the latest version of the attachment on the specified content with the given filename.
java.util.List<Attachment>	getLatestVersionsOfAttachments(ContentEntityObject ceo) Retrieves the latest versions of all attachments to ceo
AttachmentDao.AttachmentMigrator	getMigrator(AttachmentDao destinationDao) Get a migrator object to migrate attachments between attachment datastores.
boolean	isAttachmentPresent(Attachment attachment) Check that an attachment exists
void	moveAttachment(Attachment attachment, Attachment oldAttachment, ContentEntityObject newContent) Moves an Attachment to a new file name or content object This method assumes that the filename and/or content of the attachment (and its previous versions) have already been updated.
void	prepareForMigrationTo() Prepare the data store for a migration from another type of data store.
void	removeAttachmentFromServer(Attachment attachment) Removes attachment (and all of its versions)
void	removeAttachmentVersionFromServer(Attachment attachment) Removes an attachment version
void	replaceAttachmentData(Attachment attachment, java.io.InputStream attachmentData) Sets the attachment data for attachment This method will overwrite any existing data for the attachment version.
void	saveNewAttachment(Attachment attachment, java.io.InputStream attachmentData) Saves a new attachment
void	saveNewAttachmentVersion(Attachment attachment, Attachment previousVersion, java.io.InputStream attachmentData) Saves a new version of attachment

Method Detail

getLatestVersionsOfAttachments

java.util.List<Attachment> getLatestVersionsOfAttachments(ContentEntityObject ceo)

Retrieves the latest versions of all attachments to ceo

Parameters:

ceo - the content to look up attachments

Returns:

a List of Attachment objects

See Also:

countLatestVersionsOfAttachments(com.atlassian.confluence.core.ContentEntityObject)

countLatestVersionsOfAttachments

int countLatestVersionsOfAttachments(ContentEntityObject content)

Parameters:

content - the content object

Returns:

the number of current attachments on a content object

See Also:

getLatestVersionsOfAttachments(com.atlassian.confluence.core.ContentEntityObject)

findAll

java.util.List<Attachment> findAll()

Retrieves the latest versions of all Attachments Use of this method is discouraged when there are a large amount of Attachments.

Returns:

A List of Attachment objects

See Also:

findLatestVersionsIterator()

findLatestVersionsIterator

java.util.Iterator<Attachment> findLatestVersionsIterator()

Retrieves the latest versions of all Attachments and returns an Iterator to the results.

Returns:

Iterator to the results

getAttachmentData

java.io.InputStream getAttachmentData(Attachment attachment)
                                      throws AttachmentDataNotFoundException

Retrieves the InputStream representing the data for attachment

Parameters:

attachment - the attachment whose data will be returned

Returns:

InputStream of the data

Throws:

AttachmentDataNotFoundException - if the data could not be found

saveNewAttachment

void saveNewAttachment(Attachment attachment,
                       java.io.InputStream attachmentData)

Saves a new attachment

Parameters:

attachment - the Attachment to be saved

attachmentData - the attachment data to be saved

saveNewAttachmentVersion

void saveNewAttachmentVersion(Attachment attachment,
                              Attachment previousVersion,
                              java.io.InputStream attachmentData)

Saves a new version of attachment

Parameters:

attachment - the Attachment to be saved

previousVersion - the previous version of the Attachment

attachmentData - the attachment data to be saved

isAttachmentPresent

boolean isAttachmentPresent(Attachment attachment)

Check that an attachment exists

Parameters:

attachment - the Attachment to be checked

moveAttachment

void moveAttachment(Attachment attachment,
                    Attachment oldAttachment,
                    ContentEntityObject newContent)

Moves an Attachment to a new file name or content object

This method assumes that the filename and/or content of the attachment (and its previous versions) have already been updated.

Parameters:

attachment - the Attachment to be moved

oldAttachment - the Attachment before it has been updated

newContent - the new content attachment belongs to

Throws:

java.lang.IllegalArgumentException - if attachment is not the latest version

removeAttachmentFromServer

void removeAttachmentFromServer(Attachment attachment)

Removes attachment (and all of its versions)

Parameters:

attachment - the Attachment to be removed

removeAttachmentVersionFromServer

void removeAttachmentVersionFromServer(Attachment attachment)

Removes an attachment version

Parameters:

attachment - the Attachment version to be removed

Since:

4.2

replaceAttachmentData

void replaceAttachmentData(Attachment attachment,
                           java.io.InputStream attachmentData)

Sets the attachment data for attachment This method will overwrite any existing data for the attachment version.

Parameters:

attachment - Attachment the data belongs to

attachmentData - the data to save

getMigrator

AttachmentDao.AttachmentMigrator getMigrator(AttachmentDao destinationDao)

Get a migrator object to migrate attachments between attachment datastores. To be used when switching datastore implementations

Parameters:

destinationDao - dao to move attachments to

Returns:

A migrator

getCopier

AttachmentDao.AttachmentCopier getCopier(AttachmentDao destinationDao)

Get a copier object to copy attachments between data stores The source data store will remain untouched

Parameters:

destinationDao - dao to copy attachments to

Returns:

A copier

prepareForMigrationTo

void prepareForMigrationTo()

Prepare the data store for a migration from another type of data store.

Classes implementing this method will perform any tasks necessary to allow the data store to be used. These tasks may assume that users are locked out of the system.

Throws:

java.lang.RuntimeException - if there was a problem

afterMigrationFrom

void afterMigrationFrom()

Perform any tasks necessary after Attachment data has been moved from this data store to another. These tasks may assume that users are locked out of the system.

Throws:

java.lang.RuntimeException - if there was a problem

findAllVersions

java.util.List<Attachment> findAllVersions(Attachment attachment)

getById

Attachment getById(long id)

Returns the attachment with the given persistent ID. Returns null if no such attachment exists.

Parameters:

id - the persistent ID of the attachment to retrieve

Returns:

the attachment with the given ID, or null if no attachment exists with the provided ID.

Since:

3.0

getAttachment

Attachment getAttachment(ContentEntityObject content,
                         java.lang.String fileName,
                         int version)
                         throws java.lang.IllegalArgumentException

Return the attachment on the specified content with the given filename and version. Returns null if no such attachment exists.

Note: unlike AttachmentManager.getAttachment(ContentEntityObject, String, int), this method does not accept zero as a special flag to indicate the latest version of an attachment. To retrieve the latest version of an attachment, use getLatestAttachment(ContentEntityObject, String).

Parameters:

content - the content to find the attachment on

fileName - the file name of the attachment, treated case-insensitively

version - the version of the attachment

Returns:

the attachment with the given name and version attached to that content, or null if the attachment does not exist.

Throws:

java.lang.IllegalArgumentException - if the content or fileName is null

Since:

3.0

getLatestAttachment

Attachment getLatestAttachment(ContentEntityObject content,
                               java.lang.String fileName)
                               throws java.lang.IllegalArgumentException

Return the latest version of the attachment on the specified content with the given filename. Returns null if no attachment with that name on the content exists.

Parameters:

content - the content to find the attachment on

fileName - the file name of the attachment

Returns:

the latest version of attachment with the given name attached to that content, or null if the attachment does not exist.

Throws:

java.lang.IllegalArgumentException - if the content or fileName is null

Since:

3.0

getLastAddedVersionsOf

java.util.List<Attachment> getLastAddedVersionsOf(Attachment attachment)

Retrieves all the last added versions for each user who has added a version of the attachment That is, if a user has added multiple versions, only the latest added version will be added to the list returned. Result will be sorted with the earliest version coming first.

Parameters:

attachment - attachment (must be the latest version)

Returns:

the last added versions for each user who has added a version of the attachment

Throws:

java.lang.IllegalArgumentException - if the attachment is not the latest version or null

getBackingStorageType

AttachmentDataStorageType getBackingStorageType()

Returns the backing storage type.

Returns:

the backing storage type

Since:

4.3

See Also:

AttachmentDataDao.getStorageType()