Download 764_8_Web

CIS 764 Database Systems Design
L8. Web ….
Fall 2008
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CIS 764 Database Systems Design
class status:
19 persons
( 7 off campus, 12 in class )
… not checked all home pages yet
… homework index … done
off campus may run 3-7 days behind the in-class
(part delay in posting)
next week … review of reverse engineering,
(then forward engineering exercise)
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CIS 764 Database Systems Design
ejb tutorial …
is that an effective way give programming assignment?
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ejb tutorial …
is that an effective way give programming assignment?
SE answer: No … missing design documents (diagrams)
(later)
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CIS 764 Database Systems Design
next logical topic: Object-Relational Mapping
but … skip that for now
used implicitly in tables  classes
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CIS 764 Database Systems Design
CIS 726 WWW Technologies
Spring 2009
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web issues / topics:
dynamic pages …. user interaction, generated data
page control / design
db aware components
usability
testing
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CIS 764 Database Systems Design
web issues / topics:
dynamic pages …. user interaction, generated data
JavaScript …
JSP …
page control / design
Struts .. Page flow model
db aware components
JSF, ADF components
usability … later
testing
Fall 2008
… later (performance vs functional )
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CIS 764 Database Systems Design
dynamic web pages:
http://en.wikipedia.org/wiki/Dynamic_web_page
* client side scripting: e.g.
JavaScript (not really Java), VBScript, PHP, …
* server side: e.g. ASP, JSP, PHP,….
** AJAX … a bit of both
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CIS 764 Database Systems Design
http://en.wikipedia.org/wiki/JavaServer_Pages
scriptlets (old, embedded code)
<% int localStackBasedVariable = 1;
out.println(localStackBasedVariable); %>
vs
tags
<jsp:forward page="subpage.jsp" >
<jsp:param name="forwardedFrom" value="this.jsp" />
</jsp:forward>
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CIS 764 Database Systems Design
http://en.wikipedia.org/wiki/JavaServer_Pages
tag libraries :
components, logic, sql, actions, custom tags
Standard Tag Library (JSTL)
primer
http://www.ibm.com/developerworks/java/library/j-jstl0211.html
Quick reference sheet
http://bellsouthpwp.net/b/i/billsigg/jstl-quick-reference.pdf
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CIS 764 Database Systems Design
JSP … several tutorials: http://www.jsptut.com/
(or http://www.visualbuilder.com/jsp/tutorial/ )
Getting familiar with your JSP server
Your first JSP
Adding dynamic content via expressions
Scriptlets
Mixing Scriptlets and HTML
Directives
Declarations
Tags
Sessions
Beans and Forms Processing
Tag Libraries
Form Editing
Log-in pages
Further learning
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Struts: a (well structured) framework for JSP development,
with tag libraries
“Model-View-Control” framework
JSP is the view,
Struts is the view-controller
ejb-beans are the model
but …. Separate controllers in the model ,
JSP page attributes defined in “beans” (not ejbs)
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CIS 764 Database Systems Design
Struts: a (well structured) framework for JSP development,
with tag libraries
Ref:
also:
Struts Survival Guide: Basics to Best Practices,
S. Shenoy, N. Mallya
Object Source, Austin, TX 2004
Apache , Jakarta project
http://www.visualbuilder.com/jsp/struts/tutorial/
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struts-config.xml
web.xml
servlets
mapping
session parms
listeners
tag libs
defaults
MIME
filters
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Attribute
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description
.
Path
URL (either full or suffix) which triggers this mapping
Type
the full class name of the Action
Name
name of the form bean
Scope
session or request
Validate
boolean: true => call validate method on the input data
Input
actually, the page (or other Action) for error response
Forward
page (or other Action) when ActionForward in exected
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Oracle tutorials:
“Creating an Input Form JSP Page Using the Struts Validator to Validate Data…”
http://www.oracle.com/technology/obe/obe_as_1012/j2ee/develop/client/strutsvalidator/validator.htm
Assignment (not homework to be collected):
View the validator tutorial … preparation for next ADF assignment.
http://people.cis.ksu.edu/~hankley/d764/JDev/struts/Validator_Tut/validator.htm
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CIS 764 Database Systems Design
JSF
“JavaServer Faces (JSF) is a Java-based Web application framework
intended to simplify development of user interfaces for Java EE applications.
Unlike other traditional request-driven MVC web frameworks, JSF uses a
component-based approach. The state of UI components is saved when the
client requests a new page and then is restored when the request is returned. “
http://en.wikipedia.org/wiki/JavaServer_Faces#JSF_versions
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CIS 764 Database Systems Design
ADF Faces
“Oracle ADF Faces is a rich set of user interface components based on the
JavaServer Faces JSR (JSR-127). The Oracle ADF Faces Components provide
various user-interface components with built-in functionality - such as data
tables, hierarchical tables, and color and date pickers - that can be customized
and re-used in your application. “
http://www.oracle.com/technology/products/adf/adffaces/index.html
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ADF Faces components
http://www.oracle.com/technology/products/jdev/htdocs/partners/addins/excha
nge/jsf/doc/tagdoc/core/imageIndex.html
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CIS 764 Database Systems Design
end
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