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com.vaadin.flow.server.communication.
Class StreamRequestHandler
java.lang.Object
com.vaadin.flow.server.communication.StreamRequestHandler
All Implemented Interfaces:
Handles StreamResource and StreamReceiver instances
registered in VaadinSession.
For internal use only. May be renamed or removed in a future release.
Since:
1.0
Author:
Vaadin Ltd
See Also:
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Field Summary
Fields -
Constructor Summary
ConstructorsModifierConstructorDescriptionCreate a new stream request handler with the default StreamReceiverHandler.
protectedStreamRequestHandler(StreamReceiverHandler receiverHandler) -
Method Summary
Modifier and TypeMethodDescriptionstatic StringgenerateURI(String name, String id) Generates URI string for a dynamic resource using its
idandname.protected longReturns maximum file part count for upload.
protected longReturns maximum file size for upload.
protected longReturns maximum request size for upload.
booleanhandleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) Called when a request needs to be handled.
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Field Details
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DYN_RES_PREFIX
Dynamic resource URI prefix.
See Also:
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Constructor Details
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StreamRequestHandler
public StreamRequestHandler()Create a new stream request handler with the default StreamReceiverHandler.
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StreamRequestHandler
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Method Details
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handleRequest
public boolean handleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException Description copied from interface:
RequestHandlerCalled when a request needs to be handled. If a response is written, this method should return
trueto indicate that no more request handlers should be invoked for the request.Note that request handlers by default do not lock the session. If you are using VaadinSession or anything inside the VaadinSession you must ensure the session is locked. This can be done by extending
SynchronizedRequestHandleror by usingVaadinSession.accessSynchronously(Command)orUI.accessSynchronously(Command).Specified by:
handleRequestin interfaceRequestHandlerParameters:
session- The session for the requestrequest- The request to handleresponse- The response object to which a response can be written.Returns:
true if a response has been written and no further request handlers should be called, otherwise false
Throws:
IOException- If an IO error occurred -
generateURI
Generates URI string for a dynamic resource using its
idandname. [0] UIid, [1] sec key, [2] nameParameters:
name- file or attribute name to use in pathid- unique resource idReturns:
generated URI string
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getRequestSizeMax
protected long getRequestSizeMax()Returns maximum request size for upload. Override this to increase the default. Defaults to -1 (no limit).
Returns:
maximum request size for upload
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getFileSizeMax
protected long getFileSizeMax()Returns maximum file size for upload. Override this to increase the default. Defaults to -1 (no limit).
Returns:
maximum file size for upload
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getFileCountMax
protected long getFileCountMax()Returns maximum file part count for upload. Override this to increase the default. Defaults to 10000.
Returns:
maximum file part count for upload
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