[cvs] expresso/expresso-web/expresso/doc newbieguide.html
JCorporate Ltd
jcorp at jcorp2.servlets.net
Sun May 9 19:01:45 PDT 2004
Update of /home/javacorp/.cvs/expresso/expresso/expresso-web/expresso/doc
In directory jcorp2.servlets.net:/tmp/cvs-serv18250/expresso-web/expresso/doc
Modified Files:
newbieguide.html
Log Message:
now includes material from usersguide
Index: newbieguide.html
===================================================================
RCS file: /home/javacorp/.cvs/expresso/expresso/expresso-web/expresso/doc/newbieguide.html,v
retrieving revision 1.4
retrieving revision 1.5
diff -C2 -d -r1.4 -r1.5
*** newbieguide.html 5 May 2004 04:07:26 -0000 1.4
--- newbieguide.html 10 May 2004 02:01:43 -0000 1.5
***************
*** 14,23 ****
<DIV align="left">
<h1 align="center"><A name="Top"></A>An Expresso Newbie's Guide</h1>
! <p><span class="jc-explanation">Expresso is a robust and mature development
! framework built on top of <A href="http://jakarta.apache.org/struts" target="_blank">Apache
Struts</A>, utilizing solid architectural principles that will accommodate
from the simple projects with few users to the complex corporate high use
projects. This guide will attempt to navigate the novice user through the
various areas of Expresso.</span> </p>
<TABLE border="0" width="100%">
<TBODY>
--- 14,38 ----
<DIV align="left">
<h1 align="center"><A name="Top"></A>An Expresso Newbie's Guide</h1>
! <p><span class="jc-explanation">Expresso is the most popular architectural
! framework. Expresso is a robust and mature development framework built
! on top of <A href="http://jakarta.apache.org/struts" target="_blank">Apache
Struts</A>, utilizing solid architectural principles that will accommodate
from the simple projects with few users to the complex corporate high use
projects. This guide will attempt to navigate the novice user through the
various areas of Expresso.</span> </p>
+ <p><span class="jc-explanation">Developing a web application entirely from
+ scratch can be a massive overkill. There just isn't enough time/money in
+ the world to reinvent the wheel every time for each web application. It
+ is better to leverage an open-sourced framework and toolkit, like the Expresso
+ because it has far more virtual Internet resources to help debug and maintain
+ it - thus more robust, productive, and efficient than 'going it alone'. </span></p>
+ <p><span class="jc-explanation">Expresso is maintained and supported by many
+ developers and users - in fact the largest framework community globally.
+ There is the standard open source argument that OS projects are better
+ because there are many people working on it.Most people who develop the
+ next generation of web software prefer to build on something that already
+ works out of the box. So now that you have completed the installation process,
+ this document describes the Getting Started process for Expresso. Many
+ thanks to Geeta Ramani for her ideas to this resource document. </span></p>
<TABLE border="0" width="100%">
<TBODY>
***************
*** 33,38 ****
</TD>
<TD valign="top">
! <P><A href="mailto:david at lloydhome.com?Subject=An Expresso Newbie's Guide">David
! A. Lloyd</A></P>
</TD>
</TR>
--- 48,53 ----
</TD>
<TD valign="top">
! <P><A href="mailto:geeta.ramani at cmpco.com?Subject=Expresso Newbie Guide Documentation">Geeta
! Ramani</A></P>
</TD>
</TR>
***************
*** 44,48 ****
in other documents. The purpose of this roadmap is to point you to those
documents when possible and hopefully you won't have to hunt down the right
! document for what you need, when you need it.. <BR>
<BR>
For a list of available documentation for Expresso, try the <A href="http://www.jcorporate.com/econtent/Content.do?state=runView&db=default&resource=254">Expresso
--- 59,86 ----
in other documents. The purpose of this roadmap is to point you to those
documents when possible and hopefully you won't have to hunt down the right
! document for what you need, when you need it.</P>
! <P>Many clever developers realized that JavaServer Pages *and* servlets could
! be used <B>together</B> to deploy web applications which became known as
! Model 2. It is now commonplace to use the terms Model 2 and MVC (Model-View-Controller)
! interchangeably. The servlets help with the control-flow, and the JSPs focus
! on the business of writing HTML. With the release of 4.0, Expresso was
! integrated with Struts, which provides a standard MVC framework to the Java
! community. With the release of 5.5.Expresso is now integrated with Struts
! 1.1. For an introduction to Struts please read the <A href="http://jakarta.apache.org/struts/userGuide/index.html" target="_blank">Struts
! Users Guide</A>. <BR>
! <BR>
! The ready-made web application is on the horizon, where you as a software developer,
! professional or otherwise, will look in distaste if you had to code your own
! security, database persistence layers, session management, controller, actions,
! input and output, validation, and user profiling entirely from scratch. Many
! users are thrilled to find Expresso because of all the complexities and tedium
! it solves, and because of its rapid development capabilities. But the next question
! is finding the way out from the basic starting point. This document describes
! the process of taking that next step with Expresso. <BR>
! <BR>
! By now it is recommended that you have read the <A href="http://www.jcorporate.com/expresso/doc/prereq.html">Expresso
! Pre-requisites</A> and started the <A href="http://www.jcorporate.com/expresso/doc/expressocomplete.html">installation</A>.
! There are no "post-install" steps to Expresso other than connecting
! to an alternate database or beginning development. <BR>
<BR>
For a list of available documentation for Expresso, try the <A href="http://www.jcorporate.com/econtent/Content.do?state=runView&db=default&resource=254">Expresso
***************
*** 53,57 ****
faciliate this, local file names are provided throughout this document, i.e.
configuration.html. Third party resources are also links throughout this
! document to provide additional learning material.</P>
<h2><A name="Installation"></A>Installation</h2>
<P>With Expresso complete it is very straightforward install. You can simplify
--- 91,229 ----
faciliate this, local file names are provided throughout this document, i.e.
configuration.html. Third party resources are also links throughout this
! document to provide additional learning material.</P>
! <h2><A name="What is a Framework?"></A>What is a Framework?</h2>
! <P> A framework is a set of prefabricated software building blocks that programmers
! can use, extend, or customize to suit their application. With frameworks.
! developers don't have to start from scratch each time they build an application:
! both tile design and the code of a framework may be reused. A Java web development
! framework is a collection of tools and API's that enhance Sun's standard
! Java APIs by providing:
! <UL>
! <LI>Structure to web development
! <LI>Generic services that are needed on most projects (logging, persistence,
! etc...)
! <LI>Tools and methods that simplify and accelerate web development.
! </UL>
! <P>Frameworks capture the programming expertise and best practices necessary
! to solve a particular class of problems and make them pervasive. In this
! case, it is the web centric, multi-tiered, enterprise environment that the
! Expresso application framework addresses. Programmers purchase or reuse frameworks
! to obtain such problem solving expertise without having to reinvent the wheel. </P>
! <h2><A name="What Can I do with Expresso?"></A>What Can I do with the Expresso
! Framework?</h2>
! <P>Based on feedback from some newbies, the main question a newbie asks is: "what
! can i do with Expresso"? And many newbies say that though Expresso seems
! to be a *wonderful* application, the amount of stuff is certainly overwhelming.
! So we're going to try to make it a little easier.<BR>
! <BR>
! Expresso is a good, powerful, flexible framework which provides a number of
! services that assist in building web applications. The major areas that these
! services are used are:</P>
! <UL>
! <LI>Provides Application Organization and Configuration
! <LI>Provides Database access and Database Objects toolkit
! <LI>Support MVC Architecture and provides package of components for creating
! several types of "Controller" objects
! <LI>Provides Job Queueing/Handling
! <LI>Provides a means for easily and quickly creating useful servlets and
! JSP pages
! <LI>Provides a mechanism for defining "events" that occur within
! the web application.
! <LI>Provides a number of other userful utilities.
! </UL>
! <h2><A name="Getting Started User Questions"></A>Getting Started User Questions</h2>
! <P>Before reading the Expresso Developers Guide (EDG) as a reference document,
! here are some questions/answers and reference material as suggested by some
! newbies getting started withe Expresso:</P>
! <OL>
! <LI><B>Why would I choose Expresso over developing my own framework?</B> <BR>
! Expresso is maintained and supported by many developers and users. Thus the
! standard open source argument certainly holds: OS projects are better than
! homegrown because there are many people working on it and using it in a
! huge diversity of environments. Thus Expresso evolves and reflects the
! huge real world experiences of its users. Further, since Expresso is open
! source, code can be modified to fit individual needs. Although, a better/easier
! approach would be to extend the framework which, happily, is pretty easy.
! Moreover, many developers are already familiar with Expresso and/or Struts
! so new team members may not need training as in a proprietary framework.
! Struts and Expresso are becoming so popular that it's darn near a standard
! in Java web development. <BR>
! <LI><B>What does a person need to know about Struts before (s)he works with
! Expresso?</b> <br>
! It would probably be wishful thinking to assume that you could pick up Struts
! along the way as you catch up with Expresso. Struts is a wonderful and powerful
! framework in its own right, and well worth study. The good news is that since
! Expresso is now tightly integrated with Struts, learning Struts is a good
! first step to learning Expresso. Further, Struts has a gentle learning curve,
! is <A href="http://jakarta.apache.org/struts/userGuide/index.html" target="_blank">well
! documented</a>, and has an active and friendly list serve.
! <LI><B>What does Struts do for Expresso?</B> <BR>
! Struts is open source framework which implements a Model 2, JSP web application
! architecture for building web applications in Java Servlets and JavaServer
! Pages. This approach is characterised by using a Servlet as a command request
! dispatcher. Further, Struts unifies Java Beans and JSPs through the using
! custom action tag libraries. It is particularly strong in coupling business
! logic and views without excessive cohesion. There is a clear separation
! of business logic and presentation with the library if the edicts are followed.
! The rich custom action tag libraries, use of XML technology, and for some
! people whose natural language is not English, built-in in support for internationalisation,
! means that Struts is clear popular winner across the world. Please refer
! to the <A href="http://www.jcorporate.com/expresso/doc/struts.html">Struts_Integration</A> document
! for more information, as well as the diagram of the <A href="http://www.jcorporate.com/expresso/doc/struts1.pdf">Struts
! /Controller execution in Expresso</A> for a graphical representation.<BR>
! <LI><B>What is the difference between Tomcat, JBoss and Expresso?</B> <BR>
! Tomcat is a servlet/JSP container, and JBoss is an EJB container. Thus, Tomcat
! doesn't know what to do with EJBs as JBoss doesn't know what to do with
! servlets and JSPs. Moreover, there is a JBoss bundle that comes with Tomcat
! set up to run with it. JBoss is not an alternative to Expresso either,
! but, again, they can work together if you really need EJBs. Otherwise,
! Expresso's DBObjects and controllers can make the deal..<BR>
! <LI><B>How loosely coupled are the services/components in the Expresso Framework</b> The
! question can be rephrased as folows: If you have already developed internally
! some framework you'd like to continue using, could you still supplement
! with Expresso services?
! <LI><BR>
! About the only parts of Expresso you can't get away from are:
! <UL>
! <li>DBObjects and Derivatives</li>
! <li>Expresso Configuration,</li>
! <li>and Expresso Logging system.</li>
! </UL>
! <BR>
! Without these, pretty much none of the services will work. After that you
! can start picking and choosing... for example, we talked to a guy on the
! Struts list one time that JUST used DBObjects and skipped the whole controller
! stuff, and was just using Struts for the controller. I've found for myself
! that it was easier extending 4.0 to do things just the way I wanted it rather
! than building my own custom services from scratch and then using Expresso
! for the other things.<BR>
! <LI><B>Where is the "servlet stuff" hidden?</B><BR>
! Most of us are used to dealing with servlets and so on but Expresso treats
! even HttpRequest/HttpResponse objects are too "core" for an app
! writer to have to deal with and so are hidden from view. An explanation
! of how this is achieved in Expresso as well (as how an app writer should
! infact take advantage of this) would be great. Does anyone have any tips
! on how to debug Expresso apps and what tools are used to do this?<BR>
! <LI><B>Is there an Expresso "tutorial"?</B><BR>
! Check out the <A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=871" target="_blank">Weblog
! Example</A>, <A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=807" target="_blank">Location
! Example</A> and the <A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=808" target="_blank">Contacts
! Example</A>. The latter example is also used by the How To document and may
! be referenced throughout other documentation as the reference for learning.<BR>
! <LI><B>Does anyone have any tips on how to debug Expresso apps and what tools
! are used to do this?</B><BR>
! You can use Expresso's own log4j implementation, which is documented on the
! site. It is quite easy to use, and can be turned on and off in each area,
! with ease. It has been a very powerful approach for many users. You can use
! your IDE too. For example the setup for use Forte's IDE with standard breakpoints
! is documented in detail at <a href="http://Expresso.badfw.org/">http://Expresso.badfw.org/</a>.
! IBM's VisualAge for Java also works very well, which in addition to the interactive
! debugger, has the advantage of incremental compilation making the debug,
! edit, test cycle very quick. You could also use the JUnit implementation
! within Expresso to utilize standardized testing regimens. You will find many
! such tests sprinkled throughout the Expresso class structure. IDE specific
! notes can also be found in the main <a href="http://www.jcorporate.com/econtent/Content.do?state=template&template=2&resource=636&db=default">Documentation
! page</a>.
! </OL>
<h2><A name="Installation"></A>Installation</h2>
<P>With Expresso complete it is very straightforward install. You can simplify
***************
*** 121,124 ****
--- 293,430 ----
</TBODY>
</TABLE>
+ <h2><A name="Best Practice with the Expresso Framework"></A>Best Practice with
+ the Expresso Framework</h2>
+ <P> Please review the "<A href="http://www.theserverside.com/resources/article.jsp?l=Expresso" target="_blank">Best
+ Practice with Expresso Framework: Using a framework to create a web application</A>" written
+ by Peter Pilgrim. Expresso Framework is a large toolkit of classes.
+ Getting started can be overwhelming because there are so many classes [well
+ over
+ 200] to look at. This document directs a newbie's focus to the "important" classes
+ so that is really helpful. The document also divides the framework classes
+ into four types and discusses the roles of each of these types of classes:</P>
+ <UL>
+ <LI>schemas
+ <LI>database object persistence
+ <LI>controller design
+ <LI>and the rest of the kit, which involves job control, utilities, etc
+ </UL>
+ <P>It is essential that you understand the first three parts. Expresso Framework
+ is also very much database-driven. That is, you will need to use a reliable,
+ scalable relational database to make full use of the kit. Mysql, Sybase,
+ Oracle, DB2, and Postgres are all suitable candidates. The document demosnstrates
+ best practices by describing a simple stock trading program that displays
+ stocks trades, and allows the user to buy and sell stocks. Hopefully, you
+ can take this best of practice, using a framework, custom tag action libraries,
+ JSP's, and Servlets, elsewhere and make it a success in your web applications. </P>
+ <h2><A name="Where is the Root of My Application Supposed to Be?"></A>Where
+ is the Root of My Application Supposed to Be?</h2>
+ <P>Based on feedback from Newbies, another prominent question is: "Where
+ is the root of My applications supposed to be"? So we want to give an
+ explanation of the suggested directory structure. First you might want to
+ review the <A href="http://www.jcorporate.com/expresso/doc/expressoMap.html">package
+ and file organization</A> of Expresso. All Expresso apps fall under the same
+ context as Expresso (so the apps can use Expresso's classes).<BR>
+ <BR>
+ First, a brief review of the notion of "contexts" in your servlet/JSP
+ container.</P>
+ <h3>Contexts</h3>
+ <P>Your JSP container (for the sake of simplicity let say it is TOMCAT), defines
+ a directory for web applications as it needs to know about all the contexts
+ you have defined. This is because, when Tomcat receives a request to serve
+ a web page, it checks the "context" of the request URI. For example,
+ if the URI is http://www.mycompany.com/myapp/index.jsp, then the "context" is "myapp",
+ and so it looks for the "myapp" context.
+ <P>Contexts are defined in two ways: either explicitly via a definition in
+ the container's "server.xml" or due to the presence of subdirectories within
+ a special subdirectory called "webapps" present in the root of $TOMCAT_HOME:
+ $TOMCAT_HOME/webapps. For example, the "default web app" is the one stored
+ in the "ROOT" subdirectory, and is accessed via the URI "http://www.mycompany.com/".
+ Standalone Tomcat installations usually create this default context/subdirectory
+ as well as an "examples" context/subdirectory.
+ <P>In particular, Tomcat can run multiple web applications because each web
+ application which is a subdirectory under the "webapps" directories defines
+ a distinct context (and can be accessed via a distinct URI).
+ <P>Expresso Framework is one web application when it is properly installed:
+ there is a subdirectory called "Expresso" in "webapps":
+ $TOMCAT_HOME/webapps/Expresso. Thus the URI "http://www.mycompany.com/Expresso" can
+ be considered the front page for web application, Expresso.
+ <P>In keeping with this "usual" scenario, earlier versions of Expresso
+ Framework created an "Expresso" context/subdirectory, and stored
+ its root "frame.jsp" page in the this context (eg. in $TOMCAT_HOME/webapps/Expresso/frame.jsp
+ for Unix) which translates to a URI of "http://www.mycompany.com/Expresso/frame.jsp".
+ However, in later versions, the root frame page was moved to a directory
+ further down - into another subdirectory, also called "Expresso":
+ So for example, for Unix systems, this is in $TOMCAT_HOME/webapps/Expresso/Expresso/frame.jsp,
+ accessible via an URI: http://www.mycompany.com/Expresso/Expresso/frame.jsp
+ <P>Due to this change, you can now insert your own customised welcome page
+ (accessed via "http://www.mycompany.com/Expresso/frame.jsp" and
+ stored in $TOMCAT_HOME/webapps/Expresso/frame.jsp for Unix) while the Expresso
+ pages, which may in fact be thought of as the "Administration" directory
+ no longer "takes over" your site.
+ <P>Next, we move to the question of where to put your own web apps. Since each
+ JSP container allocates a unique class loader for each context, there are
+ two possible ways of incorporating the Expresso Framework with your preexisting
+ applications. We describe them both below:
+ <OL>
+ <LI>Install the Expresso Framework for <B>each</B> of your web applications
+ in separate contexts. For example, if you have three web applications,
+ alpha, beta, and gamma, you could have the following set up, with three
+ separate installations of the Expresso Framework:
+ <UL>
+ <LI>[( Class loader for "alpha" created/defined as follows:]<BR>
+ webapps/alpha<BR>
+ webapps/alpha/Expresso/
+ <LI>[( Class loader for "beta" created/defined as follows:]<BR>
+ webapps/beta<BR>
+ webapps/beta/Expresso/
+ <LI>[( Class loader for "gamma created/defined as follows:]<BR>
+ webapps/gamma<BR>
+ webapps/gamma/Expresso/</LI>
+ </UL>
+ <LI>On the other hand, you can have more than one application with in the
+ Expresso framework. It is just a matter of organising the directory structures.
+ The way to achieve this is to install just one instance of the Expresso
+ Framework . Divide and reorganise the context to whatever you feel your
+ architecture requires so all your applications (or more properly "sub-applications")
+ belong to the *same* context as does "Expresso". For example,
+ you could have the following subdirectories:
+ <UL>
+ <LI>webapps/Expresso/Expresso
+ <LI>webapps/Expresso/alpha
+ <LI>webapps/Expresso/beta
+ <LI>webapps/Expresso/gamma</LI>
+ </UL>
+ </LI>
+ </OL>
+ <P>Each approach has its advantages and disadvantages. The individual requirements
+ of your applications should dictate which approach you take. </P>
+ <P>In the first case, you will have three separate & different installations
+ of the Expresso Framework! However, the three web applications will belong
+ to three distinct contexts and therfore are completely independent (and ignorant
+ ) of each other. In particular, they can never share any application code
+ or sessions etc. When you publicize your web application on the Internet
+ you probably dont want to broadcast that Expresso is being used until you
+ have secured the application. You can rename the `Expresso' sub directory
+ to the `Expresso235' and then change the set up value `%Expresso%' in the
+ database. So can secure the admin site of your site. Lastly you should leave
+ the java classes in `%context%/WEB-INF/classes' because Java has packages
+ and readily support namespaces. Just call them different eg. `com.acme.work.webapp.*'
+ and it won't interference with Expresso's `com.jcorporate.*'.<BR>
+ Put your custom tag library descriptors in `WEB-INF/tlds' and your libraries
+ jar files in `WEB-INF/lib'. See the spec at <A href="http://java.sun.com/products/jsp/" target="_blank">http://java.sun.com/products/jsp/</A>.
+ <P>On the other hand, in the second case, all three of your sub-applications
+ share the same context and can therfore share sessions, code, state, database
+ pooling etc. For example, in the example above, sub-application beta can
+ seamlessly switch over to sub-application gamma. Further, session data stored
+ by sub-application beta can be picked up by sub-application gamma. <BR>
+ <BR>
+ The JSP Container (Tomcat) can run multiple web applications because each one
+ is a subdirectory under the 'webapps' directories. With standalone Tomcat there
+ is at least two delivered out of the box 'ROOT' and 'examples'. The ROOT subdirectory
+ is special because that is the default web applicationthat you see when you
+ type in 'http://localhost:8080/' on your web browser. The 'examples' subdirectory
+ is another web application with example servlets and JSPs. The java classes
+ for each web application are loaded with its own class loader so that they
+ don't interfere with one another. </P>
<h2><A name="Directory Structure Details"></A>Directory Structure Details</h2>
<p>You would be well advised to take a bit of time to go through the directory
***************
*** 617,626 ****
to facilitate looking at examples and it wouldn't hurt to keep them there
either. </P>
! <h2><A name="Database Setup"></A>Database Setup</h2>
<P>Database setup and configuration is so ubiquitous it must be mentioned in
this document. Expresso should work with most databases. See <A href="http://www.jcorporate.com/econtent/Content.do?state=viewPage&pageId=3" target="_blank">Database-specific
Installation Notes</A> <A href="http://www.jcorporate.com/econtent/Content.do?state=viewPage&pageId=3" target="_blank"><IMG style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" height="23" alt="on the web" src="file:///D:/My Documents/Studio 3.5 Projects/jcorp/html/images/icons/Ie5.gif" width="21"></A> . Specific
! databases known to work are:<BR>
! </P>
<UL>
<LI>InstantDB Database
--- 923,932 ----
to facilitate looking at examples and it wouldn't hurt to keep them there
either. </P>
! <h2><A name="Setting up Different Database and/or Servlet Engine"></A>Setting
! up Different Database and/or Servlet Engine</h2>
<P>Database setup and configuration is so ubiquitous it must be mentioned in
this document. Expresso should work with most databases. See <A href="http://www.jcorporate.com/econtent/Content.do?state=viewPage&pageId=3" target="_blank">Database-specific
Installation Notes</A> <A href="http://www.jcorporate.com/econtent/Content.do?state=viewPage&pageId=3" target="_blank"><IMG style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" height="23" alt="on the web" src="file:///D:/My Documents/Studio 3.5 Projects/jcorp/html/images/icons/Ie5.gif" width="21"></A> . Specific
! databases known to work are:</P>
<UL>
<LI>InstantDB Database
***************
*** 636,639 ****
--- 942,951 ----
<LI>SapDB </LI>
</UL>
+ <P class=prText>There are different database and Servlet engine specific installation
+ notes onsite under the Documentation link.
+ <h2><A name="Using an IDE"></A>Using an IDE</h2>
+ <P>Expresso can be used with any of the IDEs on the market. There are notes
+ onsite for specific IDEs under the " IDE-specific Installation Notes" section
+ of the Expresso Documentation.
<h2><A name="First Time Setup"></A>First Time Setup</h2>
<P>Before anything meaningful can be accomplished with a new database (like
***************
*** 743,750 ****
</TBODY>
</TABLE>
! <h2><A name="Your Application Setup"></A>Your Application Setup</h2>
! <P>Once you have some small part of your application sarted and are ready to
! try it out, a few steps must be completed to let Expresso 'know' that your
! application exists and to tie it into the framework. <BR>
</P>
<UL>
--- 1055,1111 ----
</TBODY>
</TABLE>
! <h2><A name="Sample Applications"></A>Example 5.5 Applications</h2>
! <P>To make it easier to get rolling with Expresso, <B>"Example" applications</B> are
! available with Example documentation explaining how to access the demo applications
! and how to use them as a basis for developing your own applications with
! Expresso. You might begin with a sample application such as:</P>
! <UL>
! <LI> <A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=871" target="_blank">Weblog
! Example</A>
! <LI><A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=807" target="_blank">Location
! Example</A>
! <LI><A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=808" target="_blank">Contacts
! Example</A>
! <LI><A href="http://www.xenonsoft.demon.co.uk/products/java.html" target="_blank">Orange
! Trader Example Web Application</A> and <A href="http://www.theserverside.com/resources/article.jsp?l=Expresso-Struts" target="_blank">related
! article</A>.
! </UL>
! <P> The code and relates tutorials are also available for download under the
! Expresso Examples Project. There is also an effort community underway onsite
! to develop an <A href="http://www.jcorporate.com/econtent/Content.do?state=template&template=2&db=default&resource=767" target="_blank">Expresso
! J2EE Pet Shop example</A> application. This example will illustrate Sun's
! Java BluePrints guidelines and patterns implemented using the Expresso Framework.
! This sample application, when completed, will show how to use the capabilities
! of the J2EE 1.3 platform to develop flexible, scalable, cross-platform enterprise
! applications based on the Expresso Framework. </P>
! <h2><A name="DBMaint: A Step by Step How to Example"></A>DBMaint: A Step by
! Step How to Example</h2>
! <P> Please review the "DBMaint: A Step-by-Step Example" written by
! Geeta Ramani which is in the EDG DBMaint Chapter. This is an exercise which
! can be completed by a newbie fairly easily and I think there's always something
! to be said about actually getting something to work! It illustrates the writing
! of a simple application which allows maintenance of a customer database,
! complete with security. The application can be used as a beginning for a
! more sophisticated sales tracking application. Also, the author follows the
! directory structure which is discussed in this document, so that will help.</P>
! <h2><A name="Developing Applications with Expresso"></A>Developing Applications
! with Expresso</h2>
! <P>Here are some commonly asked questions about next steps and where to do
! from here:<BR>
! <BR>
! The next step after installing Expresso is to <A href="http://www.jcorporate.com/expresso/doc/installapp.html" target="_blank">install
! other applications</A>, such as eForum or begin development. Here are some
! references for beginning to develop your own application:</P>
! <UL>
! <LI><A href="http://www.jcorporate.com/econtent/Content.do?state=resource&resource=552" target="_blank">Expresso
! Developer's Guide</A>
! </UL>
! <P> If you get a bug that has you hung up, it will likely get fixed very quickly
! with the community collaboration in which case you will want to download
! the daily -dev download from cvs.</P>
! <h3><A name="Your Application Setup"></A>Your Application Setup</h3>
! <P>Once you have some small part of your application started and are ready
! to try it out, a few steps must be completed to let Expresso 'know' that
! your application exists and to tie it into the framework. <BR>
</P>
<UL>
***************
*** 771,774 ****
--- 1132,1165 ----
</TBODY>
</TABLE>
+ <h2><A name="Troubleshooting Resources"></A>Troubleshooting Resources</h2>
+ <P>If you get stuck along the way there are a number of resources available
+ to help you:</P>
+ <OL>
+ <LI><B>FAQ</B><BR>
+ A good starting place for getting questions answered is found on the <A href="http://www.jcorporate.com/econtent/Content.do?state=template&template=2&resource=636&db=default" target="_blank">Expresso
+ project page</A>, choose the FAQ link in the left column.
+ <LI><B>Opensource Listserv and its archives</B><BR>
+ We recommend that you <A href="http://mailman.jcorporate.com/pipermail/opensource/" target="_blank">view
+ its recent archives</A> for answers to your questions. You can also post
+ your question with the community of Expresso developers on the opensource
+ listserv. When you registered you may have selected to join the listserv
+ at that time. You can post to the listserv by sending a message to : <A href="mailto:opensource at jcorporate.com?Subject=Troubleshooting question....">opensource at jcorporate.com</A>.
+ This is a tremendous community resource as there are several thousand members
+ on this listserv. If you are not already a member you can <A href="http://mailman.jcorporate.com/mailman/listinfo/opensource" target="_blank">join
+ the listserv</A>.
+ <LI><B>Expresso Forums</B><BR>
+ You can find them on the <A href="http://www.jcorporate.com/econtent/Content.do?state=template&template=2&resource=636&db=default" target="_blank">Expresso
+ project page</A>, choose the Forums link in the top menu bar. There are users
+ and developer forums available to post your questions and suggestions. By
+ using the community process your question is freely answered and also benefits
+ other community members who may have the same question. Forums are available
+ to registered users.
+ <LI><B>Premium Support</B><BR>
+ Many corporations have tight project constraints and wish the security of
+ guaranteed prompt responses beyond that of the community resources and/or
+ dedicated support personnel - so we encourage these companies to purchase
+ Premium Support for Expresso or any of our other products: please email
+ us at <A href="mailto:sales at jcorporate.com?Subject=Premium Support">sales at jcorporate.com</A>.
+ </OL>
<h2><A name="Conclusion"></A>Conclusion</h2>
<p>Great documentation exists on Expresso. But in my experience, the best place
***************
*** 796,800 ****
find it takes about 2 weeks to get fully up to speed.
<h3>Contributors</h3>
! <P>Contributors to this document include: <A href="mailto:david at lloydhome.com?Subject=An Expresso Newbie's Guide">David
A. Lloyd</A>, <a href="mailto:info at jcorporate.com">Sandra Cann</a></P>
<P>If you find any trouble spots with this document, or something you'd like
--- 1187,1192 ----
find it takes about 2 weeks to get fully up to speed.
<h3>Contributors</h3>
! <P>Contributors to this document include: <A href="mailto:geeta.ramani at cmpco.com?Subject=Expresso Newbie Guide Documentation">Geeta
! Ramani</A>, <A href="mailto:david at lloydhome.com?Subject=An Expresso Newbie's Guide">David
A. Lloyd</A>, <a href="mailto:info at jcorporate.com">Sandra Cann</a></P>
<P>If you find any trouble spots with this document, or something you'd like
***************
*** 808,812 ****
</A></FONT><BR>
Last Modified:
! <!-- #BeginDate format:En2 -->04-May-2004<!-- #EndDate -->
</FONT></P>
</DIV>
--- 1200,1204 ----
</A></FONT><BR>
Last Modified:
! <!-- #BeginDate format:En2 -->09-May-2004<!-- #EndDate -->
</FONT></P>
</DIV>
More information about the cvs
mailing list