com.opmath.test.db
Class ContactServlet

java.lang.Object
  |
  +--javax.servlet.GenericServlet
        |
        +--javax.servlet.http.HttpServlet
              |
              +--com.opmath.util.http.HttpServlet
                    |
                    +--com.opmath.test.db.ContactServlet

All Implemented Interfaces:

ParamIndex, Serializable, Servlet, ServletConfig

public class ContactServlet

extends HttpServlet

Example - a Servlet making use of DMLDoc, Jakarta Tomcat and an embedded JDBC driver: a very simple but functional contact book. Demonstrates the use of DMLDoc, as contained within Open Math Utilities v010 with Jakarta Tomcat 4.0 / Servlet 2.3 API and any local JDBC connection.

Copyright: (c) 2002 The Open Math Company Limited

The Terms of Distribution of this software are stipulated in the javadoc Overview for this project.

Since:

J2SE 1.3.0, Java Servlet 2.3

Version:

ExpDMLDoc v1.0

Author:

Bruno Beloff bruno.beloff@opmath.com

See Also:

Serialized Form

Field Summary

static String	DB_HOST The absolute local file path to the database.
static String	DB_PASS The password for the database connection.
static String	DB_PATH The absolute local file path to the database.
static String	DB_USER the user name for the database connection.
static String	DBA_CLASS the class of the database adapter.
static String	TPL_DIR The absolute local file path to the HTML templates used by the servlet.

Fields inherited from class com.opmath.util.http.HttpServlet

EOL, LOGON_DONE, LOGON_TARGET

Constructor Summary

ContactServlet()

Method Summary

void	destroy() Releases the servlet's resources, including the mail client.
String	doGetDispatch(HttpServletRequest req) Responds to an HTTP GET request.
String	getServletInfo() Reports a summary of the servlet's identity.
void	init() Initialise the servlet.

Methods inherited from class com.opmath.util.http.HttpServlet

, doGet, doPost, doPostDispatch, getIndex, getParamIndex, getValueCount, paramIndices, paramMappings, paramNames, paramValues, registerIndex, registerIndices, report, setConfig, setConfig

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

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

Methods inherited from class java.lang.Object

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

Field Detail

TPL_DIR

public static String TPL_DIR

The absolute local file path to the HTML templates used by the servlet. Should be initialised using web.xml.

Since:

J2SE 1.3

DB_HOST

public static String DB_HOST

The absolute local file path to the database. Should be initialised using web.xml.

Since:

J2SE 1.3

DB_PATH

public static String DB_PATH

The absolute local file path to the database. Should be initialised using web.xml.

Since:

J2SE 1.3

DBA_CLASS

public static String DBA_CLASS

the class of the database adapter. Should be initialised using web.xml.

Since:

J2SE 1.3

DB_USER

public static String DB_USER

the user name for the database connection. Should be initialised using web.xml.

Since:

J2SE 1.3

DB_PASS

public static String DB_PASS

The password for the database connection. Should be initialised using web.xml.

Since:

J2SE 1.3

Constructor Detail

ContactServlet

public ContactServlet()

Method Detail

init

public void init()
          throws ServletException,
                 UnavailableException

Initialise the servlet. Invoked only by the servlet container.

Overrides:

init in class GenericServlet

Throws:

ServletException - not explicitly thrown within this method.

UnavailableException - if the servlet could not be initialised.

Since:

J2SE 1.3

doGetDispatch

public String doGetDispatch(HttpServletRequest req)
                     throws Exception

Responds to an HTTP GET request. Invoked by doGet(..) on the servlet's superclass.

Overrides:

doGetDispatch in class HttpServlet

Parameters:

req - a com.opmath.util.http.HttpServletRequest instantiated by the container.

Throws:

Exception - if the request could not be satisfied.

Since:

J2SE 1.3

destroy

public void destroy()

Releases the servlet's resources, including the mail client. (Invoked only by the servlet container.)

Overrides:

destroy in class GenericServlet

Since:

J2SE 1.3

getServletInfo

public String getServletInfo()

Reports a summary of the servlet's identity.

Overrides:

getServletInfo in class HttpServlet

Returns:

A String describing this servlet.

Since:

J2SE 1.3