FileContentStore (Alfresco 5.2.4 Public Java API)

org.springframework.context.ApplicationContextAware, org.springframework.beans.factory.Aware, org.springframework.context.ApplicationListener<org.springframework.context.ApplicationEvent>, EventListener, ContentStore

@org.alfresco.api.AlfrescoPublicApi
public class FileContentStore

extends AbstractContentStore

implements org.springframework.context.ApplicationContextAware, org.springframework.context.ApplicationListener<org.springframework.context.ApplicationEvent>

Provides a store of node content directly to the file system. The writers are generated using information from the simple content context.

The file names obey, as they must, the URL naming convention as specified in the ContentStore interface.
The protocols handled are:

store: These URLs can be generated by this implementation and are file references within the root directory.
spoof: These URLs are never generated by the implementation but represent spoofed binary text stream data.

Author:

Derek Hulley

Field Summary
static String	SPOOF_PROTOCOL
static String	STORE_PROTOCOL store is the default prefix for file content URLs

Fields inherited from class org.alfresco.repo.content.AbstractContentStore

contentLimitProvider

Fields inherited from interface org.alfresco.repo.content.ContentStore

NEW_CONTENT_CONTEXT, PROTOCOL_DELIMITER

Constructor Summary
FileContentStore(org.springframework.context.ApplicationContext context, File rootDirectory) Public constructor for programmatic use.
FileContentStore(org.springframework.context.ApplicationContext context, File rootDirectory, Map<String,Serializable> extendedEventParams)
FileContentStore(org.springframework.context.ApplicationContext context, String rootDirectoryStr) Public constructor for programmatic use.

Method Summary
static String	createNewFileStoreUrl() Creates a new content URL.
boolean	delete(String contentUrl) Attempts to delete the content.
boolean	exists(String contentUrl) Performs a direct check against the file for its existence.
ContentReader	getReader(String contentUrl) This implementation requires that the URL start with STORE_PROTOCOL or SPOOF_PROTOCOL
String	getRootLocation() Get the location where the store is rooted.
long	getSpaceFree() Get the filesystem's free space.
long	getSpaceTotal() Get the filesystem's total space.
ContentWriter	getWriterInternal(ContentReader existingContentReader, String newContentUrl) Returns a writer onto a location based on the date.
boolean	isWriteSupported() Check if the store supports write requests.
void	onApplicationEvent(org.springframework.context.ApplicationEvent event)
void	setAllowRandomAccess(boolean allowRandomAccess) Stores may optionally produce readers and writers that support random access.
void	setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
void	setDeleteEmptyDirs(boolean deleteEmptyDirs) Configure the FileContentStore to delete empty parent directories upon deleting a content URL.
void	setFileContentUrlProvider(FileContentUrlProvider fileContentUrlProvider)
void	setReadOnly(boolean readOnly) File stores may optionally be declared read-only.
String	toString()

Methods inherited from class org.alfresco.repo.content.AbstractContentStore

getContentUrlParts, getWriter, isContentUrlSupported, isValidContentUrl, setContentLimitProvider

Methods inherited from class java.lang.Object

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

Field Detail

SPOOF_PROTOCOL

public static final String SPOOF_PROTOCOL

See Also:

Constant Field Values

STORE_PROTOCOL

public static final String STORE_PROTOCOL

store is the default prefix for file content URLs

Constructor Detail

FileContentStore

public FileContentStore(org.springframework.context.ApplicationContext context,
String rootDirectoryStr)

Public constructor for programmatic use.

Parameters:

context - application context through which events can be published

rootDirectoryStr - the root under which files will be stored. The directory will be created if it does not exist.

See Also:

FileContentStore(File)

FileContentStore

public FileContentStore(org.springframework.context.ApplicationContext context,
File rootDirectory)

Public constructor for programmatic use.

Parameters:

context - application context through which events can be published

rootDirectory - the root under which files will be stored. The directory will be created if it does not exist.

FileContentStore

public FileContentStore(org.springframework.context.ApplicationContext context,
File rootDirectory,
Map<String,Serializable> extendedEventParams)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

setApplicationContext

public void setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
throws org.springframework.beans.BeansException

Specified by:

setApplicationContext in interface org.springframework.context.ApplicationContextAware

Throws:

org.springframework.beans.BeansException

setAllowRandomAccess

public void setAllowRandomAccess(boolean allowRandomAccess)

Stores may optionally produce readers and writers that support random access. Switch this off for this store by setting this to false.

This switch is primarily used during testing to ensure that the system has the ability to spoof random access in cases where the store is unable to produce readers and writers that allow random access. Typically, stream-based access would be an example.

Parameters:

allowRandomAccess - true to allow random access, false to have it faked

setReadOnly

public void setReadOnly(boolean readOnly)

File stores may optionally be declared read-only. This is useful when configuring a store, possibly temporarily, to act as a source of data but to preserve it against any writes.

Parameters:

readOnly - true to force the store to only allow reads.

setFileContentUrlProvider

public void setFileContentUrlProvider(FileContentUrlProvider fileContentUrlProvider)

isWriteSupported

public boolean isWriteSupported()

Description copied from interface: ContentStore

Check if the store supports write requests.

Specified by:

isWriteSupported in interface ContentStore

Returns:

Returns true always

exists

public boolean exists(String contentUrl)

Performs a direct check against the file for its existence. For spoofed URLs, the URL always exists.

Specified by:

exists in interface ContentStore

Overrides:

exists in class AbstractContentStore

Parameters:

contentUrl - the path to the content

Returns:

Returns true if the content exists, otherwise false if the content doesn't exist or if the URL is not applicable to this store.

getSpaceFree

public long getSpaceFree()

Get the filesystem's free space.

Specified by:

getSpaceFree in interface ContentStore

Overrides:

getSpaceFree in class AbstractContentStore

Returns:

Returns the root directory partition's free space

getSpaceTotal

public long getSpaceTotal()

Get the filesystem's total space.

Specified by:

getSpaceTotal in interface ContentStore

Overrides:

getSpaceTotal in class AbstractContentStore

Returns:

Returns the root directory partition's total space

getRootLocation

public String getRootLocation()

Description copied from interface: ContentStore

Get the location where the store is rooted. The format of the returned value will depend on the specific implementation of the store.

Specified by:

getRootLocation in interface ContentStore

Overrides:

getRootLocation in class AbstractContentStore

Returns:

Returns the canonical path to the root directory

getReader

public ContentReader getReader(String contentUrl)

This implementation requires that the URL start with STORE_PROTOCOL or SPOOF_PROTOCOL

Specified by:

getReader in interface ContentStore

Parameters:

contentUrl - the path to where the content is located

Returns:

Returns a read-only content accessor for the given URL. There may be no content at the given URL, but the reader must still be returned.

getWriterInternal

public ContentWriter getWriterInternal(ContentReader existingContentReader,
String newContentUrl)

Returns a writer onto a location based on the date.

Overrides:

getWriterInternal in class AbstractContentStore

Parameters:

existingContentReader - the existing content reader

newContentUrl - the new content url

Returns:

Returns a writer onto a location based on the date

delete

public boolean delete(String contentUrl)

Attempts to delete the content. The actual deletion is optional on the interface so it just returns the success or failure of the underlying delete.

Specified by:

delete in interface ContentStore

Overrides:

delete in class AbstractContentStore

Parameters:

contentUrl - the URL of the content to delete

Returns:

Returns true if the content was deleted (either by this or another operation), otherwise false. If the content no longer exists, then true is returned.

Throws:

UnsupportedOperationException - if the store is read-only

See Also:

setReadOnly(boolean)

createNewFileStoreUrl

public static String createNewFileStoreUrl()

Creates a new content URL. This must be supported by all stores that are compatible with Alfresco.

Returns:

Returns a new and unique content URL

onApplicationEvent

public void onApplicationEvent(org.springframework.context.ApplicationEvent event)

Specified by:

onApplicationEvent in interface org.springframework.context.ApplicationListener<E extends org.springframework.context.ApplicationEvent>

setDeleteEmptyDirs

public void setDeleteEmptyDirs(boolean deleteEmptyDirs)

Configure the FileContentStore to delete empty parent directories upon deleting a content URL.

Parameters:

deleteEmptyDirs - the deleteEmptyDirs to set

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