Class SparqlServlet

java.lang.Object
jakarta.servlet.GenericServlet
jakarta.servlet.http.HttpServlet
se.liu.ida.hefquin.service.SparqlServlet
All Implemented Interfaces:
jakarta.servlet.Servlet, jakarta.servlet.ServletConfig, Serializable
public class SparqlServlet extends jakarta.servlet.http.HttpServlet
Servlet for handling SPARQL queries via HTTP GET and POST requests. Supports multiple result formats and integrates with the HeFQUIN engine.
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    SparqlServlet()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    protected void
    doGet(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response)
    Handles HTTP GET requests containing a SPARQL query passed via the 'query' parameter.
    protected void
    doPost(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response)
    Handles HTTP POST requests containing SPARQL queries.
    void
    init(jakarta.servlet.ServletConfig config)
    Initializes the servlet.

    Methods inherited from class jakarta.servlet.http.HttpServlet

    doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

    Methods inherited from class jakarta.servlet.GenericServlet

    destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • SparqlServlet

      public SparqlServlet()

  • Method Details

    • init

      public void init(jakarta.servlet.ServletConfig config) throws jakarta.servlet.ServletException
      Initializes the servlet.
      Specified by:
      init in interface jakarta.servlet.Servlet
      Overrides:
      init in class jakarta.servlet.GenericServlet
      Parameters:
      config - the servlet configuration
      Throws:
      jakarta.servlet.ServletException - if the engine initialization fails

    • doPost

      protected void doPost(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response) throws IOException
      Handles HTTP POST requests containing SPARQL queries. Supports both 'application/sparql-query' and 'application/x-www-form-urlencoded'.
      Overrides:
      doPost in class jakarta.servlet.http.HttpServlet
      Parameters:
      request - the HTTP request
      response - the HTTP response
      Throws:
      IOException

    • doGet

      protected void doGet(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response) throws IOException
      Handles HTTP GET requests containing a SPARQL query passed via the 'query' parameter.
      Overrides:
      doGet in class jakarta.servlet.http.HttpServlet
      Parameters:
      request - the HTTP request
      response - the HTTP response
      Throws:
      IOException