Package com.mongodb.client.gridfs

Class GridFSUploadStream

java.lang.Object

java.io.OutputStream

com.mongodb.client.gridfs.GridFSUploadStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

@NotThreadSafe
public abstract class GridFSUploadStream
extends OutputStream

A GridFS OutputStream for uploading data into GridFS

Provides the id for the file to be uploaded as well as the write methods of a OutputStream

This implementation of a OutputStream will not throw IOExceptions. However, it will throw a MongoException if there is an error writing to MongoDB.

Since:

3.1

Constructor Summary

Constructors

Constructor	Description
GridFSUploadStream()

Method Summary

Modifier and Type	Method	Description
abstract void	abort()	Aborts the upload and deletes any data.
abstract void	close()
void	flush()
abstract BsonValue	getId()	Gets the BsonValue for the file to be uploaded
abstract ObjectId	getObjectId()	Gets the ObjectId for the file to be uploaded or throws an error if an alternative BsonType has been used for the id.
abstract void	write(byte[] b)
abstract void	write(byte[] b, int off, int len)
abstract void	write(int b)

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Constructor Details

GridFSUploadStream

public GridFSUploadStream()

Method Details

getObjectId

public abstract ObjectId getObjectId()

Gets the ObjectId for the file to be uploaded or throws an error if an alternative BsonType has been used for the id. Throws a MongoGridFSException if the file id is not an ObjectId.

Returns:

the ObjectId for the file to be uploaded

getId

public abstract BsonValue getId()

Gets the BsonValue for the file to be uploaded

Returns:

the BsonValue for the file to be uploaded

abort

public abstract void abort()

Aborts the upload and deletes any data.

write

public abstract void write(int b)

Specified by:

write in class OutputStream

write

public abstract void write(byte[] b)

Overrides:

write in class OutputStream

write

public abstract void write(byte[] b,
 int off,
 int len)

Overrides:

write in class OutputStream

flush

public void flush()

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

close

public abstract void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream