org.w3c.jigsaw.frames
Class JpegComFrame
java.lang.Object
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+--org.w3c.tools.resources.AttributeHolder
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+--org.w3c.tools.resources.Resource
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+--org.w3c.tools.resources.FramedResource
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+--org.w3c.tools.resources.ResourceFrame
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+--org.w3c.tools.resources.ProtocolFrame
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+--org.w3c.jigsaw.frames.HTTPFrame
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+--org.w3c.jigsaw.frames.JpegComFrame
- public class JpegComFrame
- extends HTTPFrame
This class will read the comments from a jpeg file and return it
depending on the Accept: header
Field Summary |
protected static int |
ATTR_COM_TYPE
Attribute index - The comment content type |
protected HttpEntityTag |
cometag
The comment entity tag |
protected java.lang.String |
comment
The comment. |
static boolean |
debug
|
protected static java.lang.String[] |
vary
the static String of the Vary ehader to be added |
Fields inherited from class org.w3c.jigsaw.frames.HTTPFrame |
acceptRanges,
allowed,
ATTR_ALLOW_DEL,
ATTR_BROWSABLE,
ATTR_CHARSET,
ATTR_CONTENT_ENCODING,
ATTR_CONTENT_LANGUAGE,
ATTR_CONTENT_LENGTH,
ATTR_CONTENT_TYPE,
ATTR_ICON,
ATTR_ICONDIR,
ATTR_INDEX,
ATTR_INDEXES,
ATTR_MAXAGE,
ATTR_MD5,
ATTR_PUTABLE,
ATTR_QUALITY,
ATTR_RELOCATE,
ATTR_STYLE_LINK,
ATTR_TITLE,
browsetype,
COND_FAILED,
COND_OK,
dresource,
fresource,
listing,
listing_stamp,
STATE_CONTENT_LOCATION |
Methods inherited from class org.w3c.jigsaw.frames.HTTPFrame |
addStyleSheet,
browse,
checkIfMatch,
checkIfModifiedSince,
checkIfNoneMatch,
checkIfUnmodifiedSince,
checkRequest,
computeContainerListing,
computeTrashDir,
computeTrashFile,
createDefaultReply,
createFileReply,
delete,
deleteDirectoryResource,
deleteFileResource,
deleteMe,
deleteOtherResource,
extended,
get,
getAllow,
getAllowDeleteFlag,
getBrowsableFlag,
getBrowseType,
getCharset,
getContentEncoding,
getContentLanguage,
getContentLength,
getContentType,
getDirectoryListing,
getDirectoryResource,
getDirectoryResource,
getETag,
getFileResource,
getHelpURL,
getHelpURL,
getIcon,
getIconDirectory,
getIndex,
getIndexes,
getMaxAge,
getMD5Flag,
getOtherResource,
getPutableFlag,
getQuality,
getRelocateFlag,
getStyleSheetURL,
getTitle,
getURL,
handleRangeRequest,
head,
headDirectoryResource,
headOtherResource,
link,
lookup,
lookupDirectory,
lookupFile,
lookupOther,
lookupResource,
options,
perform,
performFrames,
post,
put,
putOtherResource,
registerOtherResource,
registerResource,
setValue,
trace,
unlink |
Methods inherited from class org.w3c.tools.resources.ResourceFrame |
addFrameEventListener,
eventDisabled,
fireFrameEvent,
frameModified,
getFilters,
getFilters,
getFrameReference,
getResource,
getResourceReference,
getSpaceEntry,
getURLPath,
lookupFilters,
lookupFrames,
postFrameEvent,
processEvent,
removeFrameEventListener,
unregisterResource,
updateDefaultChildAttributes |
Methods inherited from class org.w3c.tools.resources.FramedResource |
addAttributeChangedListener,
addStructureChangedListener,
collectFramesReference,
delete,
disableEvent,
displayEvent,
enableEvent,
fireAttributeChangeEvent,
fireStructureChangedEvent,
fireStructureChangedEvent,
frameAdded,
frameRemoved,
getClone,
getFrame,
getFrame,
getFrameReference,
getFrameReference,
getFramesReference,
getOid,
initialize,
markModified,
notifyUnload,
postAttributeChangeEvent,
postEvent,
postStructureChangedEvent,
postStructureChangedEvent,
registerFrame,
registerFrameIfNone,
removeAttributeChangedListener,
removeStructureChangedListener,
setSilentValue,
setSilentValue,
unregisterFrame |
Methods inherited from class org.w3c.tools.resources.Resource |
acceptUnload,
checkMultipleLock,
collectFrames,
getContext,
getFrame,
getFrames,
getIdentifier,
getLastModified,
getParent,
getServer,
getSpace,
getStoreEntry,
getValue,
getValue,
isInitialized,
isUnloaded,
setContext,
setContext,
setValue,
updateAttributes |
Methods inherited from class org.w3c.tools.resources.AttributeHolder |
definesAttribute,
definesAttribute,
getAttributes,
getBoolean,
getChar,
getClone,
getClone,
getDouble,
getFloat,
getInt,
getLong,
getString,
getValue,
initialize,
lookupAttribute,
pickleValues,
print,
setBoolean,
setChar,
setDouble,
setFloat,
setInt,
setLong,
setString,
setValue,
unsafeGetValue |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
debug
public static final boolean debug
ATTR_COM_TYPE
protected static int ATTR_COM_TYPE
- Attribute index - The comment content type
vary
protected static java.lang.String[] vary
- the static String of the Vary ehader to be added
cometag
protected HttpEntityTag cometag
- The comment entity tag
comment
protected java.lang.String comment
- The comment.
JpegComFrame
public JpegComFrame()
getCommentType
public MimeType getCommentType()
- get the content type of the comment embedded in the picture
- Returns:
- a MimeType, or null if undefined
getMetadata
protected java.lang.String getMetadata()
- Extract the comment from the jpeg image.
- Returns:
- the comment
getComETag
public HttpEntityTag getComETag()
- Get the comment Etag
- Returns:
- an instance of HttpEntityTag, or null if not
defined.
updateCachedHeaders
protected void updateCachedHeaders()
- Update the cached headers value.
Each resource maintains a set of cached values for headers, this
allows for a nice sped-up in headers marshalling, which - as the
complexity of the protocol increases - becomes a bottleneck.
- Overrides:
- updateCachedHeaders in class HTTPFrame
attributeChanged
public void attributeChanged(AttributeChangedEvent evt)
- Listen its resource.
- Overrides:
- attributeChanged in class HTTPFrame
- Tags copied from interface: AttributeChangedListener
- Parameters:
evt
- The AttributeChangeEvent describing the change.
createCommentReply
public Reply createCommentReply(Request request,
int status)
createCommentReply
public Reply createCommentReply(Request request)
checkIfMatch
public int checkIfMatch(Request request,
HttpEntityTag etag)
- Check the
If-Match
condition of that request.
- Parameters:
request
- The request to check.- Returns:
- An integer, either
COND_FAILED if condition
was checked, but failed, COND_OK
if condition was checked
and succeeded, or 0 if the condition was not checked
at all (eg because the resource or the request didn't support it).
checkIfNoneMatch
public int checkIfNoneMatch(Request request,
HttpEntityTag etag)
- Check the
If-None-Match
condition of that request.
- Parameters:
request
- The request to check.- Returns:
- An integer, either
COND_FAILED if condition
was checked, but failed, COND_OK
if condition was checked
and succeeded, or 0 if the condition was not checked
at all (eg because the resource or the request didn't support it).
negotiate
protected boolean negotiate(Request request)
throws ProtocolException
- Negotiate.
- Parameters:
request
- the incomming request.- Returns:
- true if the client wants the comment, false if the client
wants the image.
getMatchingAccept
protected HttpAccept getMatchingAccept(HttpAccept[] accepts,
MimeType mime)
headFileResource
protected Reply headFileResource(Request request)
throws ProtocolException,
ResourceException
- Perform a HEAD request for the associated FileResource.
- Overrides:
- headFileResource in class HTTPFrame
- Parameters:
request
- the incomming request.- Returns:
- A Reply instance
- Throws:
- ProtocolException - If processsing the request failed.
- ResourceException - If the resource got a fatal error.
getFileResource
protected Reply getFileResource(Request request)
throws ProtocolException,
ResourceException
- Get for FileResource
- Overrides:
- getFileResource in class HTTPFrame
- Parameters:
request
- the incomming request.- Returns:
- A Reply instance
- Throws:
- ProtocolException - If processsing the request failed.
- ResourceException - If the resource got a fatal error.
putFileResource
protected Reply putFileResource(Request request)
throws ProtocolException,
ResourceException
- Allow PUT based only on ETags, otherwise PUT is done on the image itself
- Overrides:
- putFileResource in class HTTPFrame
- See Also:
HTTPFrame.putFileResource