org.nuxeo.ecm.core.blob

Class FilesystemBlobProvider

java.lang.Object

org.nuxeo.ecm.core.blob.AbstractBlobProvider

org.nuxeo.ecm.core.blob.FilesystemBlobProvider

All Implemented Interfaces:

BlobProvider

public class FilesystemBlobProvider
extends AbstractBlobProvider

Blob provider that can reference files on the filesystem.

This blob provider MUST be configured with a "root" property that specifies the minimum root path for all files:

 
 <blobprovider name="myfsblobprovider">
   <class>org.nuxeo.ecm.core.blob.FilesystemBlobProvider</class>
   <property name="root">/base/directory/for/files</property>
 </blobprovider>
 
 

A root of / may be used to allow any path.

Blobs are constructed through createBlob(org.nuxeo.ecm.core.blob.BlobInfo). The constructed blob's key, which will be stored in the document database, contains a path relative to the root.

Since:

7.10

Field Summary

Fields

Modifier and Type	Field and Description
protected String	root The root ending with /, or an empty string.
static String	ROOT_PROP

Fields inherited from class org.nuxeo.ecm.core.blob.AbstractBlobProvider

blobProviderId, properties

Constructor Summary

Constructors

Constructor and Description
FilesystemBlobProvider()

Method Summary

Modifier and Type	Method and Description
void	close() Closes this blob provider and releases resources that may be held by it.
ManagedBlob	createBlob(BlobInfo blobInfo) Creates a filesystem blob with the given information.
InputStream	getStream(ManagedBlob blob) Gets an InputStream for the data of a managed blob.
void	initialize(String blobProviderId, Map<String,String> properties) Initializes the blob provider.
Blob	readBlob(BlobInfo blobInfo) Reads a Blob from storage.
boolean	supportsUserUpdate() Checks if user update is supported.
String	writeBlob(Blob blob) Writes a Blob to storage and returns information about it.

Methods inherited from class org.nuxeo.ecm.core.blob.AbstractBlobProvider

getProperties, hasCreateFromKeyPermission, isTransient, supportsUserUpdateDefaultFalse, supportsUserUpdateDefaultTrue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.nuxeo.ecm.core.blob.BlobProvider

canConvert, getAppLinks, getAvailableConversions, getBinaryManager, getThumbnail, getURI, isVersion, performsExternalAccessControl

Field Detail

ROOT_PROP

public static final String ROOT_PROP

See Also:

Constant Field Values

root

protected String root

The root ending with /, or an empty string.

Constructor Detail

FilesystemBlobProvider

public FilesystemBlobProvider()

Method Detail

initialize

public void initialize(String blobProviderId,
                       Map<String,String> properties)
                throws IOException

Description copied from interface: BlobProvider

Initializes the blob provider.

Specified by:

initialize in interface BlobProvider

Overrides:

initialize in class AbstractBlobProvider

Parameters:

blobProviderId - the blob provider id for this binary manager

properties - initialization properties

Throws:

IOException

close

public void close()

Description copied from interface: BlobProvider

Closes this blob provider and releases resources that may be held by it.

readBlob

public Blob readBlob(BlobInfo blobInfo)
              throws IOException

Description copied from interface: BlobProvider

Reads a Blob from storage.

Parameters:

blobInfo - the blob information

Returns:

the blob

Throws:

IOException

getStream

public InputStream getStream(ManagedBlob blob)
                      throws IOException

Description copied from interface: BlobProvider

Gets an InputStream for the data of a managed blob.

Like all InputStream, the result must be closed when done with it to avoid resource leaks.

Parameters:

blob - the managed blob

Returns:

the stream

Throws:

IOException

supportsUserUpdate

public boolean supportsUserUpdate()

Description copied from interface: BlobProvider

Checks if user update is supported.

A user update refers to the fact that a blob from this provider may be overwritten with another blob, wherever the original blob may occur (usually in a document property).

Specified by:

supportsUserUpdate in interface BlobProvider

Overrides:

supportsUserUpdate in class AbstractBlobProvider

Returns:

true if user update is supported

writeBlob

public String writeBlob(Blob blob)
                 throws IOException

Description copied from interface: BlobProvider

Writes a Blob to storage and returns information about it.

Called to store a user-created blob.

Parameters:

blob - the blob

Returns:

the blob key

Throws:

IOException

createBlob

public ManagedBlob createBlob(BlobInfo blobInfo)
                       throws IOException

Creates a filesystem blob with the given information.

The passed BlobInfo contains information about the blob, and the key is a file path.

Parameters:

blobInfo - the blob info where the key is a file path

Returns:

the blob

Throws:

IOException