org.matalon.pagerankhits.servlet
Class AbstractServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.matalon.pagerankhits.servlet.AbstractServlet

All Implemented Interfaces:

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

Direct Known Subclasses:

CrawlerControlServlet, DisplayMatrixServlet, GetRoutineServlet, ShowCrawlingProgressServlet

public abstract class AbstractServlet

extends javax.servlet.http.HttpServlet

This class acts as an abstract base for all servlets in the program.

Author:

Yonatan Matalon

See Also:

Serialized Form

Field Summary

static java.lang.String	PARAM_NAME_STATUS
static java.lang.String	PARAM_VALUE_STATUS_ERROR
static java.lang.String	PARAM_VALUE_STATUS_IDLE
static java.lang.String	PARAM_VALUE_STATUS_RUNNING
static java.lang.String	PARAM_VALUE_STATUS_SUCCESS
static long	RECENTLY_MODIFIED_INTERVAL
private static long	serialVersionUID

Fields inherited from class javax.servlet.http.HttpServlet

Fields inherited from class javax.servlet.GenericServlet

Constructor Summary

AbstractServlet()

Method Summary

protected static void	printErrorMessage(java.io.PrintWriter printWriter, int callingPageNo, java.lang.String errorMsg) Prints an error message.
private static void	printHtmlFooter(java.io.PrintWriter printWriter) Prints a HTML footer.
private static void	printHtmlHeader(java.io.PrintWriter printWriter, int callingPageNo, java.lang.String status, boolean autoRefreshPage) Prints a HTML header.
protected static void	printStandByMessage(java.io.PrintWriter printWriter, int callingPageNo, long interval) Prints a stand-by message.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, 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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

PARAM_NAME_STATUS

public static final java.lang.String PARAM_NAME_STATUS

See Also:

Constant Field Values

PARAM_VALUE_STATUS_IDLE

public static final java.lang.String PARAM_VALUE_STATUS_IDLE

See Also:

Constant Field Values

PARAM_VALUE_STATUS_RUNNING

public static final java.lang.String PARAM_VALUE_STATUS_RUNNING

See Also:

Constant Field Values

PARAM_VALUE_STATUS_ERROR

public static final java.lang.String PARAM_VALUE_STATUS_ERROR

See Also:

Constant Field Values

PARAM_VALUE_STATUS_SUCCESS

public static final java.lang.String PARAM_VALUE_STATUS_SUCCESS

See Also:

Constant Field Values

RECENTLY_MODIFIED_INTERVAL

public static final long RECENTLY_MODIFIED_INTERVAL

See Also:

Constant Field Values

Constructor Detail

AbstractServlet

public AbstractServlet()

Method Detail

printStandByMessage

protected static void printStandByMessage(java.io.PrintWriter printWriter,
                                          int callingPageNo,
                                          long interval)
                                   throws java.io.IOException

Prints a stand-by message.

Parameters:

printWriter -

callingPageNo -

interval -

Throws:

java.io.IOException

printErrorMessage

protected static void printErrorMessage(java.io.PrintWriter printWriter,
                                        int callingPageNo,
                                        java.lang.String errorMsg)
                                 throws java.io.IOException

Prints an error message.

Parameters:

printWriter -

callingPageNo -

errorMsg -

Throws:

java.io.IOException

printHtmlHeader

private static void printHtmlHeader(java.io.PrintWriter printWriter,
                                    int callingPageNo,
                                    java.lang.String status,
                                    boolean autoRefreshPage)

Prints a HTML header.

Parameters:

printWriter -

callingPageNo -

status -

autoRefreshPage -

printHtmlFooter

private static void printHtmlFooter(java.io.PrintWriter printWriter)

Prints a HTML footer.

Parameters:

printWriter -