Metacat

    <servlet-mapping>

        <servlet-name>RestServlet</servlet-name>

        <url-pattern>/checksum/*</url-pattern>

    </servlet-mapping>

    private static final String RESOURCE_CHECKSUM = "checksum";

            	} else if(resource.equals(RESOURCE_CHECKSUM)) {

            	    //handle checksum requests

            	    System.out.println("Handling getChecksum request");

            	    if(httpVerb == GET)

            	    {

            	        String guid = null;

            	        String checksumAlgorithm = "MD5";

            	        try

            	        {

            	           guid = params.get("id")[0];

            	        }

            	        catch(Exception e)

            	        {

            	            throw new InvalidRequest("1402", "Incorrect parameters passed to getChecksum");

            	        }

            	        Identifier guidid = new Identifier();

            	        guidid.setValue(guid);

            	        AuthToken token = new AuthToken(sessionId);

            	        try

            	        {

            	            checksumAlgorithm = params.get("checksumAlgorithm")[0];

            	        }

            	        catch(Exception e)

            	        {

            	            //do nothing.  default to MD5

            	        }

            	        System.out.println("getting checksum for object " + guid +

            	                " with algorithm " + checksumAlgorithm);

            	        try

            	        {

            	            Checksum c = CrudService.getInstance().getChecksum(token, guidid, checksumAlgorithm);

            	            System.out.println("got checksum " + c.getValue());

            	            response.setStatus(200);

            	            System.out.println("serializing response");

            	            serializeServiceType(Checksum.class, c, response.getOutputStream());

            	            System.out.println("done serializing response.");

            	        }

            	        catch(NotAuthorized na)

            	        {

            	            na.setDetail_code("1400");

            	            serializeException(na, response.getOutputStream());

            	        }

            	        catch(NotFound nf)

            	        {

            	            nf.setDetail_code("1420");

            	            serializeException(nf, response.getOutputStream());

            	        }

            	        catch(InvalidRequest ir)

            	        {

            	            ir.setDetail_code("1402");

            	            serializeException(ir, response.getOutputStream());

            	        }

            	        catch(ServiceFailure sf)

            	        {

            	            sf.setDetail_code("1410");

            	            serializeException(sf, response.getOutputStream());

            	        }

            	        catch(InvalidToken it)

            	        {

            	            it.setDetail_code("1430");

            	            serializeException(it, response.getOutputStream());

            	        }

            	    }

        if(checksumAlgorithm == null)

        {

            checksumAlgorithm = "MD5";

        }