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[Struts Wiki] Trivial Update of "StrutsManualActionClasses" by MichaelJouravlev
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The following page has been changed by MichaelJouravlev:
http://wiki.apache.org/struts/StrutsManualActionClasses
--
The goal of an Action class is to either implement a stateless ''service''
like "Search", or to manage a stateful ''business object'' like "Customer".
- An Action class handles a request and returns an !ActionForward object, which
represents a logical outcome of processing a request. An action mapping in
{{{struts-config.xml}}} file associates !ActionForward object with either
another Action (see [:ActionChaining:action chaining]), or with a presentation
page, or with any arbitrary URL. By not defining a specific target location in
Java code, it is possible to separate logical outcome of an action from its
visual representation.
+ An Action class handles a request and returns an !ActionForward object, which
represents a logical outcome of processing a request. An action mapping in
{{{struts-config.xml}}} file associates !ActionForward object with either
another Action (see [:ActionChaining:action chaining]) or with a presentation
page. By not defining a specific target location in Java code, it is possible
to separate logical outcome of an action from its visual representation.
Struts is agnostic to presentation technology, so response can be generated
using JSP file, Tile definition, Velocity template, XSLT stylesheet or other
rendering engine.
@@ -24, +24 @@
== Using Action To Display A Web Page ==
- JSP is default view technology used when developing with Struts. JSP file
creates dynamic web content by reading information from various Java objects
stored in page, request, session or application scope. In a Model 1 application
these objects are stored in a scope by the code that resides in JSP page itself.
+ JSP is default presentation technology used when developing with Struts. JSP
file creates dynamic web content by reading information from various Java
objects stored in page, request, session or application scope.
A standard practice to display a dynamic page in a Struts application is to
use Action class "in front" of a JSP page (see
[http://java.sun.com/blueprints/guidelines/designing_enterprise_applications_2e/web-tier/web-tier5.html
Model 2 web application architecture]). Action class creates needed beans,
puts them in an appropriate context, and forwards control to a JSP page that
reads information from these beans and displays it. Action class has access to
all standard J2EE contexts except JSP-specific page context.
- As a concequence of Model 2 architecture, JSP pages are not directly
navigated with browser when programming with Struts. Applications developed
with Struts or with other similar web frameworks like !WebWork or Stripes are
often called ''action-based''. This is different from so called ''page-based''
frameworks like ASP.NET, where web page is accessed directly from browser. In
ASP.NET a web page usually delegates events processing and page
lifecycle-related tasks to a code-behind class.
+ As a concequence of Model 2 architecture, JSP pages are not directly
accessible from browser when programming with Struts. Applications developed
with Struts or with other similar web frameworks like !WebWork or Stripes are
often called ''action-based''. This is different from so called ''page-based''
frameworks like ASP.NET, where web page is accessed directly from browser. In
ASP.NET a web page usually delegates events processing and page
lifecycle-related tasks to a ''code-behind'' class. In Microsoft parlance,
Struts Action class can be called ''code-in-front''.
The following picture illustrates a "render page" use case implemented with
Struts and ASP.NET.
@@ -38, +38 @@
The most common use case in an interactive web application is submitting of
HTML form. A user expects that if input data is not valid then the form is
redisplayed keeping information entered by the user, and displaying relevant
error messages.
- This input/output process is traditionally implemented in Struts with
setup/submit pattern:
+ The input/output process is traditionally implemented in Struts with
setup/submit pattern:
* ''setup action'' (''pre-action'', ''output action'', ''render action'')
prepares output data for display. It loads data from database, queues it into
one or more arbitrary objects located in the request or session scope, then
forwards to a view, usually a JSP page.
* ''submit action'' (''post-action'', ''input action'', ''accept action'',
''event action'') processes input data from web form and redisplays the web
form if errors has been found. If input does not contain errors, submit action
updates application state and forwards to a success page.
@@ -57, +57 @@
* Update the server-side
svn commit: r512578 - /struts/struts2/branches/STRUTS_2_0_X/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
Author: musachy
Date: Tue Feb 27 18:44:58 2007
New Revision: 512578
URL: http://svn.apache.org/viewvc?view=rev&rev=512578
Log:
WW-1777 DateTimePicker now supports expressions in the property "displayFormat"
Modified:
struts/struts2/branches/STRUTS_2_0_X/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
Modified:
struts/struts2/branches/STRUTS_2_0_X/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
URL:
http://svn.apache.org/viewvc/struts/struts2/branches/STRUTS_2_0_X/core/src/main/java/org/apache/struts2/components/DateTimePicker.java?view=diff&rev=512578&r1=512577&r2=512578
==
---
struts/struts2/branches/STRUTS_2_0_X/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
(original)
+++
struts/struts2/branches/STRUTS_2_0_X/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
Tue Feb 27 18:44:58 2007
@@ -299,13 +299,13 @@
// try to parse a date
String dateStr = obj.toString();
if(dateStr.equalsIgnoreCase("today"))
-return RFC3339_FORMAT.format(new Date());
+return RFC3339_FORMAT.format(new Date());
try {
Date date = null;
if(this.displayFormat != null) {
SimpleDateFormat format = new SimpleDateFormat(
-this.displayFormat);
+(String) getParameters().get("displayFormat"));
date = format.parse(dateStr);
return RFC3339_FORMAT.format(date);
} else {
svn commit: r512580 - /struts/struts2/trunk/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
Author: musachy
Date: Tue Feb 27 18:48:06 2007
New Revision: 512580
URL: http://svn.apache.org/viewvc?view=rev&rev=512580
Log:
WW-1777 DateTimePicker now supports expressions in the property "displayFormat"
Modified:
struts/struts2/trunk/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
Modified:
struts/struts2/trunk/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
URL:
http://svn.apache.org/viewvc/struts/struts2/trunk/core/src/main/java/org/apache/struts2/components/DateTimePicker.java?view=diff&rev=512580&r1=512579&r2=512580
==
---
struts/struts2/trunk/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
(original)
+++
struts/struts2/trunk/core/src/main/java/org/apache/struts2/components/DateTimePicker.java
Tue Feb 27 18:48:06 2007
@@ -299,13 +299,13 @@
// try to parse a date
String dateStr = obj.toString();
if(dateStr.equalsIgnoreCase("today"))
-return RFC3339_FORMAT.format(new Date());
+return RFC3339_FORMAT.format(new Date());
try {
Date date = null;
if(this.displayFormat != null) {
SimpleDateFormat format = new SimpleDateFormat(
-this.displayFormat);
+(String) getParameters().get("displayFormat"));
date = format.parse(dateStr);
return RFC3339_FORMAT.format(date);
} else {
