Examples of com.vaadin.terminal.StreamVariable

com.vaadin.terminal.StreamVariable
StreamVariable is a special kind of variable whose value is streamed to an {@link OutputStream} provided by the {@link #getOutputStream()} method. E.g.in web terminals {@link StreamVariable} can be used to send large files frombrowsers to the server without consuming large amounts of memory.
Note, writing to the {@link OutputStream} is not synchronized by the terminal(to avoid stalls in other operations when eg. streaming to a slow network service or file system). If UI is changed as a side effect of writing to the output stream, developer must handle synchronization manually.
@author IT Mill Ltd. @version 6.7.1 @since 6.5 @see PaintTarget#addVariable(VariableOwner,String,StreamVariable)

        String uppUri = pathInfo.substring(startOfData);
        String[] parts = uppUri.split("/", 3); // 0 = pid, 1= name, 2 = sec key
        String variableName = parts[1];
        String paintableId = parts[0];


        StreamVariable streamVariable = pidToNameToStreamVariable.get(
                paintableId).get(variableName);
        String secKey = streamVariableToSeckey.get(streamVariable);
        if (secKey.equals(parts[2])) {


            VariableOwner source = getVariableOwner(paintableId);

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            ResourceResponse response) throws IOException {
        String contentType = request.getContentType();
        String name = request.getParameter("name");
        String ownerId = request.getParameter("rec-owner");
        VariableOwner variableOwner = getVariableOwner(ownerId);
        StreamVariable streamVariable = ownerToNameToStreamVariable.get(
                variableOwner).get(name);


        if (contentType.contains("boundary")) {
            doHandleSimpleMultipartFileUpload(
                    new PortletRequestWrapper(request),

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        String uppUri = pathInfo.substring(startOfData);
        String[] parts = uppUri.split("/", 3); // 0 = pid, 1= name, 2 = sec key
        String variableName = parts[1];
        String paintableId = parts[0];


        StreamVariable streamVariable = getStreamVariable(paintableId,
                variableName);
        String secKey = streamVariableToSeckey.get(streamVariable);
        if (secKey.equals(parts[2])) {


            VariableOwner source = getVariableOwner(paintableId);

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        Map<String, StreamVariable> nameToStreamVariable = pidToNameToStreamVariable
                .get(paintableId);
        if (nameToStreamVariable == null) {
            return null;
        }
        StreamVariable streamVariable = nameToStreamVariable.get(variableName);
        return streamVariable;
    }

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            ResourceResponse response) throws IOException {
        String contentType = request.getContentType();
        String name = request.getParameter("name");
        String ownerId = request.getParameter("rec-owner");
        VariableOwner variableOwner = getVariableOwner(ownerId);
        StreamVariable streamVariable = ownerToNameToStreamVariable.get(
                variableOwner).get(name);


        if (contentType.contains("boundary")) {
            doHandleSimpleMultipartFileUpload(
                    new PortletRequestWrapper(request),

View Full Code Here

        String uppUri = pathInfo.substring(startOfData);
        String[] parts = uppUri.split("/", 3); // 0 = pid, 1= name, 2 = sec key
        String variableName = parts[1];
        String paintableId = parts[0];


        StreamVariable streamVariable = pidToNameToStreamVariable.get(
                paintableId).get(variableName);
        String secKey = streamVariableToSeckey.get(streamVariable);
        if (secKey.equals(parts[2])) {


            VariableOwner source = getVariableOwner(paintableId);

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                                    "File rejected. Max 2MB files are accepted by Sampler",
                                    Window.Notification.TYPE_WARNING_MESSAGE);
                } else {


                    final ByteArrayOutputStream bas = new ByteArrayOutputStream();
                    StreamVariable streamVariable = new StreamVariable() {


                        @Override
                        public OutputStream getOutputStream() {
                            return bas;
                        }

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            // expecting this to be an html5 drag
            WrapperTransferable tr = (WrapperTransferable) transferable;
            Html5File[] files = tr.getFiles();
            if (files != null) {
                for (Html5File html5File : files) {
                    StreamVariable streamVar = m_uploadHandler.prepareUpload(html5File);


                    html5File.setStreamVariable(streamVar);
                }
            }
        }

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            ResourceResponse response) throws IOException {
        String contentType = request.getContentType();
        String name = request.getParameter("name");
        String ownerId = request.getParameter("rec-owner");
        VariableOwner variableOwner = getVariableOwner(ownerId);
        StreamVariable streamVariable = ownerToNameToStreamVariable.get(
                variableOwner).get(name);


        if (contentType.contains("boundary")) {
            doHandleSimpleMultipartFileUpload(
                    new PortletRequestWrapper(request),

View Full Code Here

        String uppUri = pathInfo.substring(startOfData);
        String[] parts = uppUri.split("/", 3); // 0 = pid, 1= name, 2 = sec key
        String variableName = parts[1];
        String paintableId = parts[0];


        StreamVariable streamVariable = pidToNameToStreamVariable.get(
                paintableId).get(variableName);
        String secKey = streamVariableToSeckey.get(streamVariable);
        if (secKey.equals(parts[2])) {


            VariableOwner source = getVariableOwner(paintableId);

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