blob: f73e3f83673e27d726179406dde2b6d5157ee86a [file] [log] [blame]
<?xml version="1.0"?>
<document url="release-notes-1.0-b2.html">
<properties>
<author>Craig R. McClanahan</author>
<title>Struts Release Notes (Version 1.0-beta-2)</title>
</properties>
<body>
<section name="Introduction" href="Introduction">
<p>This document contains the release notes for
<strong>Version 1.0-beta-2</strong> of the Struts Framework,
and covers changes that have taken place since
<a href="release-notes-1.0-b1.html">Version 1.0-beta-1</a>
was released. The following sections cover
<a href="#New">New Features</a> and <a href="#Changes">Changes</a>
to Struts.</p>
</section>
<section name="What's Included?" href="Included">
<p>The binary distribution of this release includes the following
files relevant to Struts 1.0:</p>
<ul>
<li><code>INSTALL</code> - Brief installation instructions. See
the <code>Struts Documentation Application</code>, or online at
<a href="http://jakarta.apache.org/struts/">http://jakarta.apache.org/struts/</a>
for more information.</li>
<li><code>LICENSE</code> - The Apache Software Foundation license that
defines the terms under which you can use Struts (and other software
licensed by Apache).</li>
<li><code>README</code> - A brief introduction to Struts.</li>
<li><code>lib/</code> - Directory containing files you will need in
your own applications. The individual files of interest are:
<ul>
<li><code>struts.jar</code> - JAR file that contains the compiled
Java classes for both version 0.5 and 1.0 of Struts. You must
place this file in the <code>/WEB-INF/lib</code> directory of
your web application.</li>
<li><code>struts-xxxxx.tld</code> - The tag library descriptor files
for the Struts 1.0 tag libraries (bean, html, logic, and
template). You must place these files in the <code>/WEB-INF</code>
directory of your web application, and reference them with
appropriate <code>&lt;taglib&gt;</code> directives in your
web.xml file. <strong>NOTE</strong> - The struts-form.tld
file is deprecated; you should use the struts-html.tld file
instead.</li>
<li><code>jdbc2_0-stdext.jar</code> - The JDBC 2.0 Optional Package
API classes (package <code>javax.sql</code>). You will need to
include this file in the <code>/WEB-INF/lib</code> directory
of your application, if it is not already made visible to web
applications by your servlet container.</li>
<li><code>struts-config_1_0.dtd</code> - The document type descriptor
(DTD) for the Struts configuration file (which is typically named
<code>/WEB-INF/struts-config.xml</code>. Your configuration file
will be validated against an internal copy of this DTD -- this
copy is available for reference purposes only.</li>
<li><code>web-app_2_2.dtd</code> - The document type descriptor (DTD)
for web.xml files conforming to the Servlet 2.2 specification.
This copy is for reference purposes only.</li>
<li><code>web-app_2_3.dtd</code> - The document type descriptor (DTD)
for web.xml files conforming to the Servlet 2.3 specification.
This copy is for reference purposes only.</li>
</ul></li>
<li><code>webapps/</code> - Web Application Archive (WAR) files for the
web applications that are included with Struts.</li>
</ul>
<p>For backwards compatibility only, the binary distribution also
includes the following files that conform to the Struts 0.5 milestone
release APIs. Usage of these files and APIs is deprecated, and they
will be removed from releases after Struts 1.0:</p>
<ul>
<li><code>lib/</code> - Directory containing files you will need in
your own applications. The individual files of interest are:
<ul>
<li><code>struts.jar</code> - JAR file that contains the compiled
Java classes for both version 0.5 and 1.0 of Struts. You must
place this file in the <code>/WEB-INF/lib</code> directory of
your web application.</li>
<li><code>struts.tld</code> - The tag library descriptor file for
the 0.5 version of the Struts tags. You must place this file
in the <code>/WEB-INF</code> directory of your web application,
and reference it with appropriate <code>&lt;taglib&gt;</code>
directives in your web.xml file.</li>
</ul></li>
</ul>
</section>
<section name="What's New?" href="New">
<p><strong>DEPRECATIONS</strong> - The entire custom tag library
that is documented in <code>struts.tld</code> has been deprecated.
These tags correspond to the Struts 0.5 functionality that is also
deprecated, and have been replaced (and considerably enhanced) in
the various individual tag libraries.</p>
<p>The build procedure for compiling the Struts source distribution
has been revised, and now depends on having <strong>Ant 1.2</strong>
(or later) installed, with the <code>$ANT_HOME/bin</code> directory
on your path. Further information can be found in the
<a href="installation.html">Installation</a> documentation.</p>
<p>The following new features have been added to the basic controller
framework (package <code>org.apache.struts.action</code>):</p>
<ul>
<li>You can now specify that an <code>&lt;action&gt;</code> element should
invoke an existing servlet or JSP page resource, rather than calling an
<code>Action</code> class, by using the <code>include</code> attribute
rather than the <code>type</code> attribute. The standard form bean
processing provided by the controller is still performed first, if you
have configured it, so the included resource can benefit from this
processing if it wishes to.</li>
<li>The <code>initDataSources()</code> method can now throw a
<code>ServletException</code> to report that an initialization error
has occurred. Previously, such errors were logged but otherwise
ignored.</li>
<li>It is now possible to integrate business logic that is already
encapsulated as a servlet or JSP page, via use of two new standard
actions: <code>org.apache.struts.actions.ForwardAction</code> and
<code>org.apache.struts.actions.IncludeAction</code>. These actions
let you take advantage of the standard processing performed by the
controller servlet (including form bean population and calling the
<code>validate()</code> method), but not have to write Java code to
perform (or wrap) the required business logic.</li>
<li>A wrapper class has been added around the standard
<code>HttpServletRequest</code> for handling multipart requests as
identically as possible to standard requests, including processing
request parameters, populating form beans, transaction tokens, and
checking for cancellations.</li>
</ul>
<p>The following new features have been added to the utility classes
(package <code>org.apache.struts.util</code>):</p>
<ul>
<li><code>PropertyUtils</code> can now correctly locate public methods
defined in a nested interface that is implemented by a bean.</li>
<li><code>PropertyUtils</code> methods now throw
<code>IllegalArgumentException</code> when you pass a null
<code>bean</code> reference or property <code>name</code>.</li>
<li><strong>DEPRECATIONS</strong> - The following classes have been
deprecated in their entirety, because they will be replaced by
corresponding classes (with identical functionality) from the
<a href="http://jakarta.apache.org/commons">Jakarta Commons Project</a>
at some point after Struts 1.0 final release. The only change that
will ultimately be required in user code is to change the package
names on the <code>import</code> clauses:
<ul>
<li><code>org.apache.struts.util.FastArrayList</code></li>
<li><code>org.apache.struts.util.FastHashMap</code></li>
<li><code>org.apache.struts.util.FastTreeMap</code></li>
<li><code>org.apache.struts.util.BeanUtils</code></li>
<li><code>org.apache.struts.util.ConvertUtils</code></li>
<li><code>org.apache.struts.util.PropertyUtils</code></li>
</ul></li>
</ul>
<p>The following new features have been added to the
<em>struts-html</em> custom tag library (package
<code>org.apache.struts.taglib.html</code>):</p>
<ul>
<li>The <code>&lt;html:link&gt;</code> tag now accepts an optional
<code>anchor</code> attribute, to allow the inclusion of a
(possibly calculated) anchor ("#xxx") in the generated hyperlink.</li>
<li>The <code>&lt;html:base&gt;</code> tag now accepts an optional
<code>target</code> attribute.</li>
<li>The <code>&lt;html:image&gt;</code> tag now accepts an optional
<code>border</code> attribute, to define the border with around
this image.</li>
<li>You can now request that the <code>&lt;html:link&gt;</code> tag
include any current transaction control token in the generated
hyperlink, by specifying the <code>transaction</code> attribute
with a value of <code>true</code>.</li>
<li>The <code>&lt;html:options&gt;</code> tag now supports Enumeration
for the <code>collection</code> property.</li>
<li>The <code>&lt;html:form&gt;</code> tag now creates attributes for
the tag itself, and the form bean, in request scope instead of
page scope. Among other benefits, this allows you to nest the
fields of a form inside a separate page that is accessed via a
template or a <code>&lt;jsp:include&gt;</code> tag.</li>
<li>The <code>styleId</code> attribute has been added to all of the
tags where the corresponding <code>id</code> tag is relevant, to
identify a specific tag for the purposes of stylesheet references.</li>
<li>The <code>&lt;html:file&gt;</code> tag now supports the
<code>size</code> attribute to set the size of the file list
field.</li>
</ul>
<p>The following new features have been added to the
<em>struts-logic</em> custom tag library (package
<code>org.apache.struts.taglib.logic</code>):</p>
<ul>
<li>The <code>&lt;logic:iterate&gt;</code> tag now supports Enumeration
for the <code>collection</code> property.</li>
<li>The <code>&lt;logic:iterate&gt;</code> tag now exposes the current
iteration index to nested tags, through a call to the
<code>getIndex()</code> method.</li>
</ul>
<p>The following new features have been added to the
<em>struts-template</em> custom tag library (package
<code>org.apache.struts.taglib.template</code>):</p>
<ul>
<li>Attribute getter methods have been added to all of the custom
tag implementation classes to facilitate reuse.</li>
<li>The <code>&lt;template:get&gt;</code> tag now has an optional
"flush" attribute that causes the response to be committed prior
to performing the include, if set to "true". This allows working
around problems on broken servlet containers.</li>
</ul>
<p>The following new features have been added to the Struts Documentation
application (and corresponding contents on the Struts web site):</p>
<ul>
<li>Platform specific installation notes for a wide variety of application
server and servlet container environments have been accumulated and
published.</li>
</ul>
</section>
<section name="Changes and Bug Fixes" href="Changes">
<p>The following changes and bug fixes have occurred in the basic
controller framework (package <code>org.apache.struts.action</code>):</p>
<ul>
<li><code>DiskMultipartRequestHandler</code> now tries to retrieve the
temporary directory provided by the servlet container before all other
possible temporary directories.</li>
</ul>
<p>The following changes and bug fixes have occurred in the utilities
(package <code>org.apache.struts.util</code>):</p>
<ul>
<li>The <code>computeURL()</code> method now returns a
<code>MalformedURLException</code> if a URL cannot be created.
Previously, this case returned <code>null</code> with no error
message, making some problems difficult to track down.</li>
</ul>
<p>The following changes and bug fixes have occurred in the
<em>struts-html</em> custom tag library (package
<code>org.apache.struts.taglib.html</code>):</p>
<ul>
<li>The <code>&lt;html:image&gt;</code> tag now correctly generates a
closing double quote on the <code>name</code> attribute.</li>
<li>The <code>&lt;html:form&gt;</code> tag now generates a hyperlink
that includes any query parameters that were included in the original
hyperlink value.</li>
<li>The <code>&lt;html:link&gt;</code> tag now correctly places any
specified anchor ("#xxx") in the generated hyperlink.</li>
<li>The JavaScript code generated to implement the <code>focus</code>
attribute of the <code>&lt;html:form&gt;</code> tag now works even
when you use nested or indexed property expressions. Previously,
this would generate an invalid JavaScript reference to the field.</li>
<li>The <code>&lt;html:checkbox&gt;</code> tag now conforms to its
documentation, and sends the specified <code>value</code> to the
server if this checkbox is checked at submit time. In addition, a
default value of <code>on</code> is sent if no value attribute is
specified.</li>
<li>The hyperlinks created by the <code>&lt;html:link&gt;</code> and
<code>&lt;html:redirect&gt;</code> tags now properly omit the port
number if it is the default port for the current request scheme (80
for http, or 443 for https). Among other things, this corrects
session management behavior on the standard port numbers.</li>
<li>The <code>focus</code> attribute of the <code>&lt;html:form&gt;</code>
tag now works when the corresponding input field is a radio button,
or is otherwise indexed.</li>
<li>The <code>disabled</code> and <code>readonly</code> attributes have
been added to all HTML-rendering tags where they are relevant.</li>
</ul>
<p>The following changes and bug fixes have occurred in the
<em>struts-logic</em> custom tag library (package
<code>org.apache.struts.taglib.logic</code>):</p>
<ul>
<li>Hyperlink processing in the <code>&lt;logic:forward&gt;</code>
tag is now identical to that performed by the Struts Controller
Servlet when it processes an <code>ActionForward</code> that is
returned by an <code>Action</code>.</li>
</ul>
<p>The following changes and bug fixes to the Struts Documentation
application (and corresponding contents on the Struts web site) have
occurred:</p>
<ul>
<li>The Java types of collections (and arrays) over which the
<code>&lt;logic:iterate&gt;</code> tag can run are now documented.</li>
<li>The <code>&lt;bean:define&gt;</code> documentation now mentions the
JSP 1.1 Specification restriction on using more than one
<code>id</code> attribute with the same value in the same page.</li>
</ul>
<p>The following changes and bug fixes to the Struts Example Application
have occurred:</p>
<ul>
<li>The Java source code of these applications is now included in the
corresponding WAR files, in subdirectory <code>WEB-INF/src</code>.</li>
<li>Excessive filter() calls in <code>LinkSubscriptionTag</code>
have been eliminated.</li>
<li>Calls to the deprecated <code>BeanUtils.filter()</code> have been
replaced by calls to <code>ResponseUtils.filter()</code>.</li>
<li>Removed any attempt to save the pseudo-database at application
shutdown, because there is no portable mechanism to accomplish
this task.</li>
</ul>
<p>The following changes and bug fixes to the Struts Template Example
Application have occurred:</p>
<ul>
<li>Refactored the example pages to eliminate the creation of redundant
<code>&lt;html&gt;</code>, <code>&lt;head&gt;</code>, and
<code>&lt;body&gt;</code> tags.</li>
<li>If <code>&lt;template:get&gt;</code> or
<code>&lt;template:insert&gt;</code> throws an exception, do not
overwrite any "real" exception that has already been saved.</li>
<li>The text of the various pages in the example has been updated so
that they are not identical.</li>
</ul>
</section>
</body>
</document>