com.vaadin.terminal
Class StreamResource

java.lang.Object
  com.vaadin.terminal.StreamResource

All Implemented Interfaces:

ApplicationResource, Resource, Serializable

public class StreamResource
extends Object
implements ApplicationResource

StreamResource is a resource provided to the client directly by the application. The strean resource is fetched from URI that is most often in the context of the application or window. The resource is automatically registered to window in creation.

Since:

3.0

Version:

6.8.18

Author:

Vaadin Ltd.

See Also:

Serialized Form

Nested Class Summary

static interface

StreamResource.StreamSource Interface implemented by the source of a StreamResource.

Field Summary

Fields inherited from interface com.vaadin.terminal.ApplicationResource

DEFAULT_CACHETIME

Constructor Summary

StreamResource(StreamResource.StreamSource streamSource, String filename, Application application)
Creates a new stream resource for downloading from stream.

Method Summary

Application	getApplication() Gets the application of the resource.
int	getBufferSize() Gets the size of the download buffer used for this resource.
long	getCacheTime() Gets the length of cache expiration time.
String	getFilename() Gets the filename.
String	getMIMEType() Gets the MIME type of the resource.
DownloadStream	getStream() Gets resource as stream.
StreamResource.StreamSource	getStreamSource() Returns the source for this StreamResource.
void	setBufferSize(int bufferSize) Sets the size of the download buffer used for this resource.
void	setCacheTime(long cacheTime) Sets the length of cache expiration time.
void	setFilename(String filename) Sets the filename.
void	setMIMEType(String MIMEType) Sets the mime type of the resource.
void	setStreamSource(StreamResource.StreamSource streamSource) Sets the source for this StreamResource.

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamResource

public StreamResource(StreamResource.StreamSource streamSource,
                      String filename,
                      Application application)

Creates a new stream resource for downloading from stream.

Parameters:

streamSource - the source Stream.

filename - the name of the file.

application - the Application object.

Method Detail

getMIMEType

public String getMIMEType()

Description copied from interface: Resource

Gets the MIME type of the resource.

Specified by:

getMIMEType in interface Resource

Returns:

the MIME type of the resource.

See Also:

Resource.getMIMEType()

setMIMEType

public void setMIMEType(String MIMEType)

Sets the mime type of the resource.

Parameters:

MIMEType - the MIME type to be set.

getStreamSource

public StreamResource.StreamSource getStreamSource()

Returns the source for this StreamResource. StreamSource is queried when the resource is about to be streamed to the client.

Returns:

Source of the StreamResource.

setStreamSource

public void setStreamSource(StreamResource.StreamSource streamSource)

Sets the source for this StreamResource. StreamSource is queried when the resource is about to be streamed to the client.

Parameters:

streamSource - the source to set.

getFilename

public String getFilename()

Gets the filename.

Specified by:

getFilename in interface ApplicationResource

Returns:

the filename.

setFilename

public void setFilename(String filename)

Sets the filename.

Parameters:

filename - the filename to set.

getApplication

public Application getApplication()

Description copied from interface: ApplicationResource

Gets the application of the resource.

Specified by:

getApplication in interface ApplicationResource

See Also:

ApplicationResource.getApplication()

getStream

public DownloadStream getStream()

Description copied from interface: ApplicationResource

Gets resource as stream.

Specified by:

getStream in interface ApplicationResource

See Also:

ApplicationResource.getStream()

getBufferSize

public int getBufferSize()

Description copied from interface: ApplicationResource

Gets the size of the download buffer used for this resource.

If the buffer size is 0, the buffer size is decided by the terminal adapter. The default value is 0.

Specified by:

getBufferSize in interface ApplicationResource

Returns:

int the size of the buffer in bytes.

setBufferSize

public void setBufferSize(int bufferSize)

Sets the size of the download buffer used for this resource.

Parameters:

bufferSize - the size of the buffer in bytes.

getCacheTime

public long getCacheTime()

Description copied from interface: ApplicationResource

Gets the length of cache expiration time.

This gives the adapter the possibility cache streams sent to the client. The caching may be made in adapter or at the client if the client supports caching. Default is DEFAULT_CACHETIME.

Specified by:

getCacheTime in interface ApplicationResource

Returns:

Cache time in milliseconds

setCacheTime

public void setCacheTime(long cacheTime)

Sets the length of cache expiration time.

This gives the adapter the possibility cache streams sent to the client. The caching may be made in adapter or at the client if the client supports caching. Zero or negavive value disbales the caching of this stream.

Parameters:

cacheTime - the cache time in milliseconds.