Examples of org.apache.tomcat.util.http.fileupload.DeferredFileOutputStream

org.apache.tomcat.util.http.fileupload.DeferredFileOutputStream

An output stream which will retain data in memory until a specified threshold is reached, and only then commit it to disk. If the stream is closed before the threshold is reached, the data will not be written to disk at all.

This class originated in FileUpload processing. In this use case, you do not know in advance the size of the file being uploaded. If the file is small you want to store it in memory (for speed), but if the file is large you want to store it to file (to avoid memory issues). @version $Id: DeferredFileOutputStream.java 1456969 2013-03-15 14:37:04Z markt $

    @Override
    public OutputStream getOutputStream()
        throws IOException {
        if (dfos == null) {
            File outputFile = getTempFile();
            dfos = new DeferredFileOutputStream(sizeThreshold, outputFile);
        }
        return dfos;
    }

Examples of org.apache.tomcat.util.http.fileupload.DeferredFileOutputStream

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