Package com.mongodb.gridfs

Class GridFSDBFile

java.lang.Object

com.mongodb.gridfs.GridFSFile

com.mongodb.gridfs.GridFSDBFile

All Implemented Interfaces:

DBObject, BSONObject

public class GridFSDBFile
extends GridFSFile

This class enables retrieving a GridFS file metadata and content. Operations include:

• Writing data to a file on disk or an OutputStream
• Creating an InputStream to stream the data into

MongoDB documentation

GridFS

Constructor Summary

Constructors

Constructor	Description
GridFSDBFile()

Method Summary

Modifier and Type	Method	Description
InputStream	getInputStream()	Returns an InputStream from which data can be read.
long	writeTo(File file)	Writes the file's data to a file on disk.
long	writeTo(OutputStream out)	Writes the file's data to an OutputStream.
long	writeTo(String filename)	Writes the file's data to a file on disk.

Methods inherited from class com.mongodb.gridfs.GridFSFile

containsField, get, getAliases, getChunkSize, getContentType, getFilename, getGridFS, getId, getLength, getMetaData, getUploadDate, isPartialObject, keySet, markAsPartialObject, numChunks, put, putAll, putAll, removeField, save, setGridFS, setMetaData, toMap, toString

Methods inherited from class java.lang.Object

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

Constructor Details

GridFSDBFile

public GridFSDBFile()

Method Details

getInputStream

public InputStream getInputStream()

Returns an InputStream from which data can be read.

Returns:

the input stream

writeTo

public long writeTo(String filename)
             throws IOException

Writes the file's data to a file on disk.

Parameters:

filename - the file name on disk

Returns:

number of bytes written

Throws:

IOException - if there are problems writing to the file

writeTo

public long writeTo(File file)
             throws IOException

Writes the file's data to a file on disk.

Parameters:

file - the File object

Returns:

number of bytes written

Throws:

IOException - if there are problems writing to the file

writeTo

public long writeTo(OutputStream out)
             throws IOException

Writes the file's data to an OutputStream.

Parameters:

out - the OutputStream

Returns:

number of bytes written

Throws:

IOException - if there are problems writing to out