edu.isi.ontosaurus.tomcat
Class OntosaurusServlet

java.lang.Object
  HttpServlet
      edu.isi.ontosaurus.tomcat.PowerLoomTomcatServlet
          edu.isi.ontosaurus.tomcat.OntosaurusServlet

public class OntosaurusServlet
extends PowerLoomTomcatServlet

Servlet class for Ontosaurus to work with the Tomcat or other servers which follow the javax servlet standards

Field Summary

static java.lang.String	dotProgram
static java.lang.String	tempDir

Fields inherited from class edu.isi.ontosaurus.tomcat.PowerLoomTomcatServlet

KBHome, kbsLoaded

Constructor Summary

OntosaurusServlet()

Method Summary

protected void	doGet(HttpServletRequest req, HttpServletResponse res) Services a single GET request from the client.
protected void	doPost(HttpServletRequest req, HttpServletResponse res) Services a single POST request from the client.
java.lang.String	getServletInfo()
static boolean	grapherAvailable()
void	init() Configure the common stuff.

Methods inherited from class edu.isi.ontosaurus.tomcat.PowerLoomTomcatServlet

configure, copyStream, initialize, printErrorHeader, printErrorTrailer, streamToString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dotProgram

public static java.lang.String dotProgram

tempDir

public static java.lang.String tempDir

Constructor Detail

OntosaurusServlet

public OntosaurusServlet()

Method Detail

init

public void init()
          throws ServletException

Configure the common stuff. This will initialize PowerLoom and other required systems. It will set the values of the dot program and temporary directory. It will also congifure common stuff. Information for setting these values comes from the config object. The following initialization parameters are supported: COMMON: SystemInits Whitespace separated list of Stella/PowerLoom system initialization code to call. This must be the fully qualified name to invoke with now parameters. Encoding of whitespace and other unusual characters is like in URLs. KBHome Path to the top of the KB directory. Must end with a directory separator character. Encoding of whitespace and other unusual characters is like in URLs. KBs Whitespace separated list of paths (relative to kbhome) of knowledge bases to load. They will be loaded after any additional systems are initialized. Encoding of whitespace and other unusual characters is like in URLs. SPECIFIC dot Path to executable for dot graphing program tempDir Path to temporary directory for graphs. Must end with a directory separator character. Default value is the system property java.io.tempdir Note that this must match the location in the OntosaurusContext.xml file for graph locations.

Overrides:

init in class PowerLoomTomcatServlet

Throws:

ServletException

getServletInfo

public java.lang.String getServletInfo()

Overrides:

getServletInfo in class PowerLoomTomcatServlet

doPost

protected void doPost(HttpServletRequest req,
                      HttpServletResponse res)
               throws ServletException,
                      java.io.IOException

Services a single POST request from the client. This is an interface to the Stella-generated Ontosaurus code.

Overrides:

doPost in class PowerLoomTomcatServlet

Parameters:

req - the servlet request

req - the servlet response

Throws:

ServletException - when an exception has occurred

java.io.IOException

doGet

protected void doGet(HttpServletRequest req,
                     HttpServletResponse res)
              throws ServletException,
                     java.io.IOException

Services a single GET request from the client. This is an interface to the Stella-generated Ontosaurus code.

Overrides:

doGet in class PowerLoomTomcatServlet

Parameters:

req - the servlet request

req - the servlet response

Throws:

ServletException - when an exception has occurred

java.io.IOException

grapherAvailable

public static boolean grapherAvailable()