Package org.nuxeo.ecm.core.api.impl.blob

Class FileBlob

java.lang.Object

org.nuxeo.ecm.core.api.impl.blob.AbstractBlob

org.nuxeo.ecm.core.api.impl.blob.FileBlob

All Implemented Interfaces:

Serializable, Blob

public class FileBlob
extends AbstractBlob
implements Serializable

A Blob backed by a File.

The backing file may be in a temporary location, which is the case if this FileBlob was constructed from an InputStream or from a file which was explicitly marked as temporary. In this case, the file may be renamed, or the file location may be changed to a non-temporary one.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected File	file
protected boolean	isTemporary

Fields inherited from class org.nuxeo.ecm.core.api.impl.blob.AbstractBlob

digest, digestAlgorithm, encoding, filename, mimeType, TEXT_PLAIN, UTF_8

Constructor Summary

Constructors

Constructor	Description
FileBlob(File file)
FileBlob(File file, boolean isTemporary)	Creates a temporary FileBlob backed by a File.
FileBlob(File file, String mimeType)
FileBlob(File file, String mimeType, String encoding)
FileBlob(File file, String mimeType, String encoding, String filename, String digest)
FileBlob(InputStream in)	Creates a FileBlob from an InputStream, by saving it to a temporary file.
FileBlob(InputStream in, String mimeType)	Creates a FileBlob from an InputStream, by saving it to a temporary file.
FileBlob(InputStream in, String mimeType, String encoding)	Creates a FileBlob from an InputStream, by saving it to a temporary file.
FileBlob(InputStream in, String mimeType, String encoding, File tmpDir)	Creates a FileBlob from an InputStream, by saving it to a temporary file.
FileBlob(String ext)	Creates a FileBlob with an empty temporary file with the given extension.

Method Summary

Modifier and Type	Method	Description
File	getFile()	If this blob is backed by an actual file, returns it.
long	getLength()	Gets the data length in bytes if known.
InputStream	getStream()	Gets an InputStream for the data of this blob.
boolean	isTemporary()	Checks whether this FileBlob is backed by a temporary file.
void	moveTo(File dest)	Moves this blob's temporary file to a new non-temporary location.

Methods inherited from class org.nuxeo.ecm.core.api.impl.blob.AbstractBlob

equals, equalsStream, getByteArray, getCloseableFile, getCloseableFile, getDigest, getDigestAlgorithm, getEncoding, getFilename, getMimeType, getString, hashCode, setDigest, setDigestAlgorithm, setEncoding, setFilename, setMimeType, transferTo, transferTo

Methods inherited from class java.lang.Object

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

Field Details

file

protected File file

isTemporary

protected boolean isTemporary

Constructor Details

FileBlob

public FileBlob(File file)

FileBlob

public FileBlob(File file,
 String mimeType)

FileBlob

public FileBlob(File file,
 String mimeType,
 String encoding)

FileBlob

public FileBlob(File file,
 String mimeType,
 String encoding,
 String filename,
 String digest)

FileBlob

public FileBlob(InputStream in)
         throws IOException

Creates a FileBlob from an InputStream, by saving it to a temporary file.

The input stream is closed.

Parameters:

in - the input stream, which is closed after use

Throws:

IOException

FileBlob

public FileBlob(InputStream in,
 String mimeType)
         throws IOException

Creates a FileBlob from an InputStream, by saving it to a temporary file.

The input stream is closed.

Parameters:

in - the input stream, which is closed after use

mimeType - the MIME type

Throws:

IOException

FileBlob

public FileBlob(InputStream in,
 String mimeType,
 String encoding)
         throws IOException

Creates a FileBlob from an InputStream, by saving it to a temporary file.

The input stream is closed.

Parameters:

in - the input stream, which is closed after use

mimeType - the MIME type

encoding - the encoding

Throws:

IOException

FileBlob

public FileBlob(InputStream in,
 String mimeType,
 String encoding,
 File tmpDir)
         throws IOException

Creates a FileBlob from an InputStream, by saving it to a temporary file.

The input stream is closed.

Parameters:

in - the input stream, which is closed after use

mimeType - the MIME type

encoding - the encoding

tmpDir - the temporary directory for file creation

Throws:

IOException

FileBlob

public FileBlob(String ext)
         throws IOException

Creates a FileBlob with an empty temporary file with the given extension.

Parameters:

ext - the temporary file extension

Throws:

IOException

Since:

7.2

FileBlob

public FileBlob(File file,
 boolean isTemporary)

Creates a temporary FileBlob backed by a File.

Since:

10.3

Method Details

getFile

public File getFile()

Description copied from interface: Blob

If this blob is backed by an actual file, returns it.

The returned file may be short-lived (temporary), so should be used immediately.

Specified by:

getFile in interface Blob

Overrides:

getFile in class AbstractBlob

Returns:

a file, or null if the blob is not backed by a file

getLength

public long getLength()

Description copied from interface: Blob

Gets the data length in bytes if known.

Specified by:

getLength in interface Blob

Overrides:

getLength in class AbstractBlob

Returns:

the data length or -1 if not known

getStream

public InputStream getStream()
                      throws IOException

Description copied from interface: Blob

Gets an InputStream for the data of this blob.

The contract of Blob is that this method can be called several times and will correctly return a new InputStream each time. In other words, several reads of the Blob can be done.

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

Specified by:

getStream in interface Blob

Returns:

the stream

Throws:

IOException

isTemporary

public boolean isTemporary()

Checks whether this FileBlob is backed by a temporary file.

Since:

7.2

moveTo

public void moveTo(File dest)
            throws IOException

Moves this blob's temporary file to a new non-temporary location.

The move is done as atomically as possible.

Throws:

IOException

Since:

7.2