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Hong-Thai Nguyen commented on TIKA-1308: ---------------------------------------- A virtual FileSystem may be a solution, If you're on Java 7. The NIO APIs with FileSytemProvider [1] allows you define or inject a Virtual FileSystem (eg. Common VFS [2]). [1] http://docs.oracle.com/javase/7/docs/api/java/nio/file/spi/FileSystemProvider.html [2] http://commons.apache.org/proper/commons-vfs/filesystems.html > Support in memory parse mode(don't create temp file): to support run Tika in > GAE > -------------------------------------------------------------------------------- > > Key: TIKA-1308 > URL: https://issues.apache.org/jira/browse/TIKA-1308 > Project: Tika > Issue Type: Improvement > Components: parser > Affects Versions: 1.5 > Reporter: yuanyun.cn > Labels: gae > Fix For: 1.6 > > > I am trying to use Tika in GAE and write a simple servlet to extract meta > data info from jpeg: > String urlStr = req.getParameter("imageUrl"); > byte[] oldImageData = IOUtils.toByteArray(new URL(urlStr)); > ByteArrayInputStream bais = new ByteArrayInputStream(oldImageData); > Metadata metadata = new Metadata(); > BodyContentHandler ch = new BodyContentHandler(); > AutoDetectParser parser = new AutoDetectParser(); > parser.parse(bais, ch, metadata, new ParseContext()); > bais.close(); > This fails with exception: > Caused by: java.lang.SecurityException: Unable to create temporary file > at java.io.File.createTempFile(File.java:1986) > at > org.apache.tika.io.TemporaryResources.createTemporaryFile(TemporaryResources.java:66) > at org.apache.tika.io.TikaInputStream.getFile(TikaInputStream.java:533) > at org.apache.tika.parser.jpeg.JpegParser.parse(JpegParser.java:56) > at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242 > Checked the code, in > org.apache.tika.parser.jpeg.JpegParser.parse(InputStream, ContentHandler, > Metadata, ParseContext), it creates a temp file from the input stream. > I can understand why tika create temp file from the stream: so tika can parse > it multiple times. > But as GAE and other cloud servers are getting more popular, is it possible > to avoid create temp file: instead we can copy the origin stream to a > byteArray stream, so tika can also parse it multiple times. > -- This will have a limit on the file size, as tika keeps the whole file in > memory, but this can make tika work in GAE and maybe other cloud server. > We can add a parameter in parser.parse to indicate whether do in memory parse > only. > -- This message was sent by Atlassian JIRA (v6.2#6252)