Re: [text-similarity-users] reading text-similarity output from java

[Ted P. <dul...@gm...>]

Hi Antonio,

I'm afraid I have very little experience with Java, so I don't really
know how to include Perl in a Java program. I do know that there are
Perl modules that let you do the opposite, that is include Java in
Perl programs .... this is most commonly done with Inline::Java, which
can be found here :

http://search.cpan.org/~patl/Inline-Java/

I don't know if that would give any ideas about how to include Perl in
Java, but it's about the only thing I could think of to mention.

Please do let us know if you figure this out, seems like potentially a
very useful technique.

Cordially,
Ted


On Fri, Jan 16, 2009 at 11:32 AM, Antonio Toral
<ant...@il...> wrote:
> hi,
>
> i'd like to use text-similarity from a java program. So from this program I
> call text-similarity and then I capture its output. This is the java code:
>
> String command
> = "text_similarity.pl --type=Text::Similarity::Overlaps --string \"" +
> string1 + "\" \"" + string2 + "\"";
>                String result = "";
>                try {
>                        Process p = Runtime.getRuntime().exec(command);
>                        int command_exit = p.waitFor();
>                        System.err.println("Command ended with value: " + command_exit);
>
>                        BufferedReader stdInput = new BufferedReader(new
> InputStreamReader(p.getInputStream()));
>                        BufferedReader stdError = new BufferedReader(new
> InputStreamReader(p.getErrorStream()));
>                        String s = null;
>                        while ((s = stdInput.readLine()) != null) {
>                                System.out.println("\treading result: " + s);
>                                result += s;
>                        }
>                        while ((s = stdError.readLine()) != null) {
>                                System.out.println("\tERROR: " + s);
>                        }
>                }
>                catch (IOException e) {
>                        e.printStackTrace();
>                        System.exit(-1);
>                }
>                catch (InterruptedException i) {
>                        i.printStackTrace();
>                        System.exit(-2);
>                }
>
>
> However it does not work! I just get the string "0".
>
> If I run text-similarity from the command line it works fine.
> If I call from my java program a shell command (like "ls") or a "hello world"
> perl script then I can capture its output, so I guess the problem is somehow
> related to the way text-similarity buffers its output. I've read of people
> having this kind of issues when calling perl scripts from java and someone
> proposes as a solution to put this at the beginning of perl scripts:
>
> use IO::Handle;
> STDOUT->autoflush(1);
> STDERR->autoflush(1);
> [http://forums.sun.com/thread.jspa?threadID=189595&forumID=31]
>
> however, I've also tried to put this at the beginning of text_similarity.pl
> but without luck!
>
> Does anyone know how should I do?
>
>
> Thanks in advance,
> Antonio Toral
>
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-- 
Ted Pedersen
http://www.d.umn.edu/~tpederse