org.apache.tapestry5.internal.services.assets

Class StreamableResourceImpl

java.lang.Object

org.apache.tapestry5.internal.services.assets.StreamableResourceImpl

All Implemented Interfaces:

StreamableResource

Direct Known Subclasses:

CompressedStreamableResource

public class StreamableResourceImpl
extends Object
implements StreamableResource

Field Summary

Fields

Modifier and Type	Field and Description
protected AssetChecksumGenerator	assetChecksumGenerator
protected BytestreamCache	bytestreamCache
protected CompressionStatus	compression
protected String	description
protected long	lastModified
protected ResponseCustomizer	responseCustomizer

Constructor Summary

Constructors

Constructor and Description
StreamableResourceImpl(String description, ContentType contentType, CompressionStatus compression, long lastModified, BytestreamCache bytestreamCache, AssetChecksumGenerator assetChecksumGenerator, ResponseCustomizer responseCustomizer)

Method Summary

Modifier and Type	Method and Description
StreamableResource	addResponseCustomizer(ResponseCustomizer customizer) Returns a new StreamableResource that includes the provided customizer.
String	getChecksum() Compute and return the checksum of the content for this asset; the checksum should be computed based on the uncompressed content.
CompressionStatus	getCompression() Indicates if the content is compressed, or compressable.
ContentType	getContentType() Returns the resource's content type.
String	getDescription() Describes the underlying Resource (or resources} for this streamable resource; expressly used as part of the object's toString().
long	getLastModified() Returns the time the resource was last modified, with accuracy to one second (so as to match the HTTP request/response date headers).
ResponseCustomizer	getResponseCustomizer() Returns the customizer, if any, for this resource.
int	getSize() The size, in bytes, of the underlying bytestream.
InputStream	openStream() Opens the content of the resource as an input stream; the caller is responsible for closing the stream after reading it.
void	streamTo(OutputStream os) Streams the resource's content to the provided stream.
String	toString()
StreamableResource	withContentType(ContentType newContentType) Returns a new StreamableResource instance with the new content type.

Methods inherited from class java.lang.Object

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

Field Detail

description

protected final String description

compression

protected final CompressionStatus compression

lastModified

protected final long lastModified

bytestreamCache

protected final BytestreamCache bytestreamCache

assetChecksumGenerator

protected final AssetChecksumGenerator assetChecksumGenerator

responseCustomizer

protected final ResponseCustomizer responseCustomizer

Constructor Detail

StreamableResourceImpl

public StreamableResourceImpl(String description,
                              ContentType contentType,
                              CompressionStatus compression,
                              long lastModified,
                              BytestreamCache bytestreamCache,
                              AssetChecksumGenerator assetChecksumGenerator,
                              ResponseCustomizer responseCustomizer)

Method Detail

getDescription

public String getDescription()

Description copied from interface: StreamableResource

Describes the underlying Resource (or resources} for this streamable resource; expressly used as part of the object's toString().

Specified by:

getDescription in interface StreamableResource

getCompression

public CompressionStatus getCompression()

Description copied from interface: StreamableResource

Indicates if the content is compressed, or compressable.

Specified by:

getCompression in interface StreamableResource

getContentType

public ContentType getContentType()

Description copied from interface: StreamableResource

Returns the resource's content type.

Specified by:

getContentType in interface StreamableResource

getSize

public int getSize()

Description copied from interface: StreamableResource

The size, in bytes, of the underlying bytestream.

Specified by:

getSize in interface StreamableResource

getLastModified

public long getLastModified()

Description copied from interface: StreamableResource

Returns the time the resource was last modified, with accuracy to one second (so as to match the HTTP request/response date headers).

Specified by:

getLastModified in interface StreamableResource

streamTo

public void streamTo(OutputStream os)
              throws IOException

Description copied from interface: StreamableResource

Streams the resource's content to the provided stream. The caller is responsible for flushing or closing the output stream.

Specified by:

streamTo in interface StreamableResource

Throws:

IOException

openStream

public InputStream openStream()
                       throws IOException

Description copied from interface: StreamableResource

Opens the content of the resource as an input stream; the caller is responsible for closing the stream after reading it.

Specified by:

openStream in interface StreamableResource

Returns:

stream of the contents of the resource

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

getChecksum

public String getChecksum()
                   throws IOException

Description copied from interface: StreamableResource

Compute and return the checksum of the content for this asset; the checksum should be computed based on the uncompressed content.

Specified by:

getChecksum in interface StreamableResource

Returns:

checksum for uncompressed content

Throws:

IOException

See Also:

AssetChecksumGenerator.generateChecksum(StreamableResource)

addResponseCustomizer

public StreamableResource addResponseCustomizer(ResponseCustomizer customizer)

Description copied from interface: StreamableResource

Returns a new StreamableResource that includes the provided customizer. Customizers are invoked in the order they are added.

Specified by:

addResponseCustomizer in interface StreamableResource

getResponseCustomizer

public ResponseCustomizer getResponseCustomizer()

Description copied from interface: StreamableResource

Returns the customizer, if any, for this resource. This may represent an aggregate customizer.

Specified by:

getResponseCustomizer in interface StreamableResource

withContentType

public StreamableResource withContentType(ContentType newContentType)

Description copied from interface: StreamableResource

Returns a new StreamableResource instance with the new content type.

Specified by:

withContentType in interface StreamableResource