com.google.visualization.datasource
Class DataSourceServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.google.visualization.datasource.DataSourceServlet

All Implemented Interfaces:

DataTableGenerator, java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public abstract class DataSourceServlet
extends javax.servlet.http.HttpServlet
implements DataTableGenerator

An abstract class for data source servlet implementations.

Author:

Yaniv S.

See Also:

Serialized Form

Constructor Summary

DataSourceServlet()

Method Summary

protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
protected void	doPost(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
Capabilities	getCapabilities() Returns the capabilities supported by this data table generator.
protected boolean	isRestrictedAccessMode() Returns a flag that indicates whether the servlet is in restricted-access mode.

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.visualization.datasource.DataTableGenerator

generateDataTable

Constructor Detail

DataSourceServlet

public DataSourceServlet()

Method Detail

doGet

protected void doGet(javax.servlet.http.HttpServletRequest req,
                     javax.servlet.http.HttpServletResponse resp)
              throws java.io.IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

java.io.IOException

isRestrictedAccessMode

protected boolean isRestrictedAccessMode()

Returns a flag that indicates whether the servlet is in restricted-access mode. In restricted-access mode the server serves only requests coming from the same domain as the server domain (i.e., same origin policy). This protects the server from XSRF attacks while limiting the requests to which the server can respond.

Returns:

True if this servlet operates in restricted-access mode, false otherwise.

doPost

protected void doPost(javax.servlet.http.HttpServletRequest req,
                      javax.servlet.http.HttpServletResponse resp)
               throws java.io.IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

java.io.IOException

getCapabilities

public Capabilities getCapabilities()

Description copied from interface: DataTableGenerator

Returns the capabilities supported by this data table generator. The query that generateDataTable accepts will only contain clauses corresponding to these capabilities. (see Capabilities).

Specified by:

getCapabilities in interface DataTableGenerator

Returns:

The capabilities supported by this datasource.