Author: kkolinko
Date: Wed Jan 18 20:09:15 2012
New Revision: 1233034
URL: http://svn.apache.org/viewvc?rev=1233034&view=rev
Log:
Amend the page.
Correct some descriptions.
Document Part class conflict with wildcard imports that someone observed on
users@.
Correct description of CSRF protection (it is important what roles the user
has, not what parts of application she accesses).
Modified:
tomcat/site/trunk/docs/migration-7.html
tomcat/site/trunk/xdocs/migration-7.xml
Modified: tomcat/site/trunk/docs/migration-7.html
URL:
http://svn.apache.org/viewvc/tomcat/site/trunk/docs/migration-7.html?rev=1233034&r1=1233033&r2=1233034&view=diff
==============================================================================
--- tomcat/site/trunk/docs/migration-7.html (original)
+++ tomcat/site/trunk/docs/migration-7.html Wed Jan 18 20:09:15 2012
@@ -201,7 +201,10 @@
<a href="#Java_6_required">Java 6 required</a>
</li>
<li>
-<a href="#General_configuration">General configuration</a>
+<a href="#Servlet_3.0_API">Servlet 3.0 API</a>
+</li>
+<li>
+<a href="#Regular_expressions">Regular expressions</a>
</li>
<li>
<a href="#Deployment">Deployment</a>
@@ -308,8 +311,68 @@ of Apache Tomcat.</p>
<blockquote>
-<p>Apache Tomcat 7.0.x requires Java 6. Apache Tomcat 6.0.x required Java
- 5.</p>
+<p>Apache Tomcat 7.0.x requires Java 6 or later. Apache Tomcat 6.0.x
+ required Java 5.</p>
+
+
+</blockquote>
+</td>
+</tr>
+<tr>
+<td>
+<br>
+</td>
+</tr>
+</table>
+
+
+<table border="0" cellspacing="0" cellpadding="2" width="100%">
+<tr>
+<td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica,sanserif"><a
name="Servlet 3.0 API">
+<!--()--></a><a name="Servlet_3.0_API"><strong>Servlet 3.0
API</strong></a></font></td>
+</tr>
+<tr>
+<td>
+<blockquote>
+
+
+<p>Apache Tomcat 7 supports Java Servlet 3.0, JavaServer Pages 2.2 and
+ Expression Language 2.2
+ <a href="http://wiki.apache.org/tomcat/Specifications";>specifications</a>.
+ The changes between versions of specifications may be found in the
+ <em>Changes</em> appendix in each of specification documents.
+ </p>
+
+
+<p>In JSP pages that use wildcard import syntax the new classes added in
+ Servlet API may conflict with ones in web applications.
+ For example, if package <code>"a"</code> contains class <code>Part</code>,
+ the following JSP page will cease to compile in Tomcat 7:</p>
+
+
+<div align="left">
+<table cellspacing="4" cellpadding="0" border="0">
+<tr>
+<td bgcolor="#023264" width="1" height="1"><img src="/images/void.gif"
width="1" height="1" vspace="0" hspace="0" border="0"></td><td
bgcolor="#023264" height="1"><img src="/images/void.gif" width="1" height="1"
vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1"
height="1"><img src="/images/void.gif" width="1" height="1" vspace="0"
hspace="0" border="0"></td>
+</tr>
+<tr>
+<td bgcolor="#023264" width="1"><img src="/images/void.gif" width="1"
height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff"
height="1">
+<pre>
+<%@page import="a.*"%>
+<% Part page = new Part(); %></pre>
+</td><td bgcolor="#023264" width="1"><img src="/images/void.gif" width="1"
height="1" vspace="0" hspace="0" border="0"></td>
+</tr>
+<tr>
+<td bgcolor="#023264" width="1" height="1"><img src="/images/void.gif"
width="1" height="1" vspace="0" hspace="0" border="0"></td><td
bgcolor="#023264" height="1"><img src="/images/void.gif" width="1" height="1"
vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1"
height="1"><img src="/images/void.gif" width="1" height="1" vspace="0"
hspace="0" border="0"></td>
+</tr>
+</table>
+</div>
+
+
+<p>That happens because implicit import of <code>javax.servlet.http.*</code>
+ and explicit import of <code>a.*</code> will provide conflicting
+ definitions of class <code>Part</code> that was added in Servlet 3.0.
+ The solution is to use explicit import, <code>import="a.Part"</code>.</p>
</blockquote>
@@ -325,8 +388,8 @@ of Apache Tomcat.</p>
<table border="0" cellspacing="0" cellpadding="2" width="100%">
<tr>
-<td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica,sanserif"><a
name="General configuration">
-<!--()--></a><a name="General_configuration"><strong>General
configuration</strong></a></font></td>
+<td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica,sanserif"><a
name="Regular expressions">
+<!--()--></a><a name="Regular_expressions"><strong>Regular
expressions</strong></a></font></td>
</tr>
<tr>
<td>
@@ -368,6 +431,11 @@ of Apache Tomcat.</p>
</ul>
+
+<p>Note that separate regular expressions can be concatenated using the
+ "<code>|</code>" operator (or). Using "<code>|</code>" works both in this
+ and in earlier Tomcat versions.</p>
+
</blockquote>
</td>
@@ -439,26 +507,27 @@ of Apache Tomcat.</p>
<p>The roles required to use the Manager application were changed from the
- single <tt>manager</tt> role to the following four roles. You will need to
+ single <code>manager</code> role to the following four roles. You will
need to
assign the role(s) required for the functionality you wish to access.</p>
<ul>
<li>
-<tt>manager-gui</tt> - allows access to the HTML GUI and the status
- pages</li>
+<code>manager-gui</code> - allows access to the HTML GUI
+ and the status pages</li>
<li>
-<tt>manager-script</tt> - allows access to the text interface and the
- status pages</li>
+<code>manager-script</code> - allows access to the text interface
+ and the status pages</li>
<li>
-<tt>manager-jmx</tt> - allows access to the JMX proxy and the status
- pages</li>
+<code>manager-jmx</code> - allows access to the JMX proxy
+ and the status pages</li>
<li>
-<tt>manager-status</tt> - allows access to the status pages only</li>
+<code>manager-status</code> - allows access to
+ the status pages only</li>
</ul>
@@ -472,9 +541,11 @@ of Apache Tomcat.</p>
<li>users with the <tt>manager-gui</tt> role should not be granted
either the <tt>manager-script</tt> or <tt>manager-jmx</tt>
roles.</li>
-<li>if the text or jmx interfaces are accessed through a browser (e.g. for
- testing since these interfaces are intended for tools not humans)
then
- the browser must be closed afterwards to terminate the session.</li>
+<li>if the Manager application is accessed through a browser by a user
+ who has <tt>manager-script</tt> or <tt>manager-jmx</tt> roles
+ (e.g. for testing the text or jmx interfaces since these interfaces
+ are intended for tools not humans) then all browser windows
+ must be closed afterwards to terminate the session.</li>
</ul>
@@ -524,19 +595,19 @@ of Apache Tomcat.</p>
<p>The roles required to use the Host Manager application were changed from
- the single <tt>admin</tt> role to the following two roles. You will need to
+ the single <code>admin</code> role to the following two roles. You will
need to
assign the role(s) required for the functionality you wish to access.</p>
<ul>
<li>
-<tt>admin-gui</tt> - allows access to the HTML GUI and the status
- pages</li>
+<code>admin-gui</code> - allows access to the HTML GUI
+ and the status pages</li>
<li>
-<tt>admin-script</tt> - allows access to the text interface and the
- status pages</li>
+<code>admin-script</code> - allows access to the text interface
+ and the status pages</li>
</ul>
@@ -550,8 +621,10 @@ of Apache Tomcat.</p>
<li>users with the <tt>admin-gui</tt> role should not be granted the
<tt>admin-script</tt> role.</li>
-<li>if the text interface is accessed through a browser (e.g. for testing
- since this inteface is intended for tools not humans) then the
browser
+<li>if the Host Manager application is accessed through a browser
+ by a user who has <tt>admin-script</tt> role (e.g. for testing
+ the text interface since this inteface is intended for tools
+ not humans) then all browser windows
must be closed afterwards to terminate the session.</li>
</ul>
@@ -587,17 +660,18 @@ of Apache Tomcat.</p>
<ul>
<li>
-<tt>randomClass</tt> has changed to <tt>secureRandomClass</tt> and
- the provided class must extend <code>java.secure.SecureRandom</code>
+<code>randomClass</code> attribute of <strong>Manager</strong>
+ has changed to <code>secureRandomClass</code> and the provided class
+ must extend <code>java.secure.SecureRandom</code>
</li>
-<li>Two new properties <tt>secureRandomAlgoithm</tt> and
- <tt>secureRandomProvider</tt> have been added to enable the selection of
- a SecureRandom implementation.</li>
+<li>Two new properties <code>secureRandomAlgoithm</code> and
+ <code>secureRandomProvider</code> have been added to enable the selection
+ of a SecureRandom implementation.</li>
-<li>The <tt>algorithm</tt> attribute has been removed</li>
+<li>The <code>algorithm</code> attribute has been removed</li>
-<li>The <tt>entropy</tt> attribute has been removed</li>
+<li>The <code>entropy</code> attribute has been removed</li>
</ul>
@@ -653,15 +727,19 @@ of Apache Tomcat.</p>
<strong>Context</strong><code>.disableURLRewriting</code>: This has
been removed. An equivalent effect can be obtained by configuring the
<code>session-config/tracking-mode</code> elements in a web application
- or in the global <conf>CATALINA_BASE/conf/web.xml</conf> file.</li>
+ or in the global <code>CATALINA_BASE/conf/web.xml</code> file.</li>
</ul>
<p>The session and SSO cookies in Tomcat 7 are being sent with HttpOnly
flag by default, to instruct browsers to prevent access to those cookies
- from JavaScript.
- (This can be enabled in Tomcat 6.0 and 5.5 by setting
+ from JavaScript. This is considered more secure, but it will prevent
+ JavaScripts from accessing the value of the cookie.
+ This feature can be controlled by <code>useHttpOnly</code> attribute
+ on the <strong>Context</strong> element.
+ (This feature is also implemented in latest versions of Tomcat 6.0 and 5.5,
+ but is off by default. It can be enabled by setting
<code>useHttpOnly="true"</code> on <strong>Context</strong> element in
a web application or in the global
<code>CATALINA_BASE/conf/context.xml</code> file).</p>
@@ -685,13 +763,13 @@ of Apache Tomcat.</p>
<tr>
<td>
<blockquote>
-
+
-<p>Tomcat no longer accepts non-specification compliant name only cookies by
+<p>Tomcat no longer accepts non-specification compliant name-only cookies by
default. However, a new system property has been added,
<code>org.apache.tomcat.util.http.ServerCookie.ALLOW_NAME_ONLY</code>, that
- can be used to accept name only cookies.</p>
-
+ can be used to accept name-only cookies.</p>
+
</blockquote>
</td>
@@ -716,8 +794,9 @@ of Apache Tomcat.</p>
<p>The custom request attribute
<code>javax.servlet.request.ssl_session</code> provided to access the SSL
- session ID has been deprecated in favour of the new, specification defined
- request attribute <code>javax.servlet.request.ssl_session_id</code>.
Support
+ session ID has been deprecated in favour of the new standard request
+ attribute that is defined in the Servlet specification,
+ <code>javax.servlet.request.ssl_session_id</code>. Support
for the custom attribute will be removed in Tomcat 8.</p>
@@ -743,10 +822,10 @@ of Apache Tomcat.</p>
<p>To enable Comet to work correctly when running under a security manager,
the Comet classes have been moved from the <code>org.apache.catalina</code>
- package to the <code>org.apache.catalina.comet</code> package. Code using
- Comet will need to be updated and recompiled to reflect the new package
- name.</p>
-
+ package to the <code>org.apache.catalina.comet</code> package. Code that
+ uses Comet will need to be updated and recompiled to reflect the new
+ package name.</p>
+
</blockquote>
</td>
@@ -771,9 +850,9 @@ of Apache Tomcat.</p>
<p>The configuration of XML validation has been simplified. The
<code>xmlValidation</code> and <code>xmlNamespaceAware</code> attributes
- have been removed from the <code><Host></code> element. These
+ have been removed from the <strong>Host</strong> element. These
attributes, along with <code>tldValidation</code> and
- <code>tldNamespaceAware</code>, are now set per
<code><Context></code>
+ <code>tldNamespaceAware</code>, are now set per <strong>Context</strong>
element. The defaults (<code>false</code> for each attribute) have not been
changed. However, in line with the requirements of the Servlet
specification, if the
@@ -816,7 +895,8 @@ of Apache Tomcat.</p>
<p>The <code>org.apache.coyote.MAX_TRAILER_SIZE</code> has been removed and
- is replaced by the maxTrailerSize attribute of the Connector.</p>
+ is replaced by the maxTrailerSize attribute of the
+ <strong>Connector</strong>.</p>
</blockquote>
@@ -843,16 +923,18 @@ of Apache Tomcat.</p>
<p>Whilst the Tomcat 7 internal API is broadly compatible with Tomcat 6
there have been many changes at the detail level and they are not binary
compatible. Developers of custom components that interact with Tomcat's
- internals should review the JavaDoc for the relevant API. Of particular
note
- are:</p>
+ internals should review the JavaDoc for the relevant API.</p>
+
+
+<p>Of particular note are:</p>
<ul>
-<li>Use of generics.</li>
-
<li>A standard implementation of the Lifecycle interface that all
components extend.</li>
+<li>Use of generics.</li>
+
<li>The use of Context name rather than Context path as the unique
identifier for a Context within a Host.</li>
Modified: tomcat/site/trunk/xdocs/migration-7.xml
URL:
http://svn.apache.org/viewvc/tomcat/site/trunk/xdocs/migration-7.xml?rev=1233034&r1=1233033&r2=1233034&view=diff
==============================================================================
--- tomcat/site/trunk/xdocs/migration-7.xml (original)
+++ tomcat/site/trunk/xdocs/migration-7.xml Wed Jan 18 20:09:15 2012
@@ -27,12 +27,37 @@ of Apache Tomcat.</p>
<subsection name="Java 6 required">
- <p>Apache Tomcat 7.0.x requires Java 6. Apache Tomcat 6.0.x required Java
- 5.</p>
+ <p>Apache Tomcat 7.0.x requires Java 6 or later. Apache Tomcat 6.0.x
+ required Java 5.</p>
</subsection>
- <subsection name="General configuration">
+ <subsection name="Servlet 3.0 API">
+
+ <p>Apache Tomcat 7 supports Java Servlet 3.0, JavaServer Pages 2.2 and
+ Expression Language 2.2
+ <a href="http://wiki.apache.org/tomcat/Specifications";>specifications</a>.
+ The changes between versions of specifications may be found in the
+ <em>Changes</em> appendix in each of specification documents.
+ </p>
+
+ <p>In JSP pages that use wildcard import syntax the new classes added in
+ Servlet API may conflict with ones in web applications.
+ For example, if package <code>"a"</code> contains class <code>Part</code>,
+ the following JSP page will cease to compile in Tomcat 7:</p>
+
+ <source>
+<%@page import="a.*"%>
+<% Part page = new Part(); %></source>
+
+ <p>That happens because implicit import of
<code>javax.servlet.http.*</code>
+ and explicit import of <code>a.*</code> will provide conflicting
+ definitions of class <code>Part</code> that was added in Servlet 3.0.
+ The solution is to use explicit import, <code>import="a.Part"</code>.</p>
+
+ </subsection>
+
+ <subsection name="Regular expressions">
<p>All configuration options that use regular expression now require a
single regular expression (using <code>java.util.regex</code>) rather than
a
@@ -58,6 +83,10 @@ of Apache Tomcat.</p>
<a href="/tomcat-7.0-doc/config/http.html">HTTP connectors</a>.</li>
</ul>
+ <p>Note that separate regular expressions can be concatenated using the
+ "<code>|</code>" operator (or). Using "<code>|</code>" works both in this
+ and in earlier Tomcat versions.</p>
+
</subsection>
<subsection name="Deployment">
@@ -86,17 +115,18 @@ of Apache Tomcat.</p>
"<ContextPath>" to "<ContextPath>/text".</p>
<p>The roles required to use the Manager application were changed from the
- single <tt>manager</tt> role to the following four roles. You will need to
+ single <code>manager</code> role to the following four roles. You will
need to
assign the role(s) required for the functionality you wish to access.</p>
<ul>
- <li><tt>manager-gui</tt> - allows access to the HTML GUI and the status
- pages</li>
- <li><tt>manager-script</tt> - allows access to the text interface and the
- status pages</li>
- <li><tt>manager-jmx</tt> - allows access to the JMX proxy and the status
- pages</li>
- <li><tt>manager-status</tt> - allows access to the status pages only</li>
+ <li><code>manager-gui</code> - allows access to the HTML GUI
+ and the status pages</li>
+ <li><code>manager-script</code> - allows access to the text interface
+ and the status pages</li>
+ <li><code>manager-jmx</code> - allows access to the JMX proxy
+ and the status pages</li>
+ <li><code>manager-status</code> - allows access to
+ the status pages only</li>
</ul>
<p>The HTML interface is protected against CSRF but the text and JMX
@@ -105,9 +135,11 @@ of Apache Tomcat.</p>
<ul>
<li>users with the <tt>manager-gui</tt> role should not be granted
either the <tt>manager-script</tt> or <tt>manager-jmx</tt>
roles.</li>
- <li>if the text or jmx interfaces are accessed through a browser (e.g.
for
- testing since these interfaces are intended for tools not humans)
then
- the browser must be closed afterwards to terminate the session.</li>
+ <li>if the Manager application is accessed through a browser by a user
+ who has <tt>manager-script</tt> or <tt>manager-jmx</tt> roles
+ (e.g. for testing the text or jmx interfaces since these interfaces
+ are intended for tools not humans) then all browser windows
+ must be closed afterwards to terminate the session.</li>
</ul>
<p>The roles command has been removed from the Manager application since it
@@ -131,14 +163,14 @@ of Apache Tomcat.</p>
"<ContextPath>" to "<ContextPath>/text".</p>
<p>The roles required to use the Host Manager application were changed from
- the single <tt>admin</tt> role to the following two roles. You will need to
+ the single <code>admin</code> role to the following two roles. You will
need to
assign the role(s) required for the functionality you wish to access.</p>
<ul>
- <li><tt>admin-gui</tt> - allows access to the HTML GUI and the status
- pages</li>
- <li><tt>admin-script</tt> - allows access to the text interface and the
- status pages</li>
+ <li><code>admin-gui</code> - allows access to the HTML GUI
+ and the status pages</li>
+ <li><code>admin-script</code> - allows access to the text interface
+ and the status pages</li>
</ul>
<p>The HTML interface is protected against CSRF but the text interface is
@@ -147,8 +179,10 @@ of Apache Tomcat.</p>
<ul>
<li>users with the <tt>admin-gui</tt> role should not be granted the
<tt>admin-script</tt> role.</li>
- <li>if the text interface is accessed through a browser (e.g. for testing
- since this inteface is intended for tools not humans) then the
browser
+ <li>if the Host Manager application is accessed through a browser
+ by a user who has <tt>admin-script</tt> role (e.g. for testing
+ the text interface since this inteface is intended for tools
+ not humans) then all browser windows
must be closed afterwards to terminate the session.</li>
</ul>
@@ -162,13 +196,14 @@ of Apache Tomcat.</p>
generation was first written. The configuration changes are:</p>
<ul>
- <li><tt>randomClass</tt> has changed to <tt>secureRandomClass</tt> and
- the provided class must extend <code>java.secure.SecureRandom</code></li>
- <li>Two new properties <tt>secureRandomAlgoithm</tt> and
- <tt>secureRandomProvider</tt> have been added to enable the selection of
- a SecureRandom implementation.</li>
- <li>The <tt>algorithm</tt> attribute has been removed</li>
- <li>The <tt>entropy</tt> attribute has been removed</li>
+ <li><code>randomClass</code> attribute of <strong>Manager</strong>
+ has changed to <code>secureRandomClass</code> and the provided class
+ must extend <code>java.secure.SecureRandom</code></li>
+ <li>Two new properties <code>secureRandomAlgoithm</code> and
+ <code>secureRandomProvider</code> have been added to enable the selection
+ of a SecureRandom implementation.</li>
+ <li>The <code>algorithm</code> attribute has been removed</li>
+ <li>The <code>entropy</code> attribute has been removed</li>
</ul>
</subsection>
@@ -196,13 +231,17 @@ of Apache Tomcat.</p>
<li><strong>Context</strong><code>.disableURLRewriting</code>: This has
been removed. An equivalent effect can be obtained by configuring the
<code>session-config/tracking-mode</code> elements in a web application
- or in the global <conf>CATALINA_BASE/conf/web.xml</conf> file.</li>
+ or in the global <code>CATALINA_BASE/conf/web.xml</code> file.</li>
</ul>
<p>The session and SSO cookies in Tomcat 7 are being sent with HttpOnly
flag by default, to instruct browsers to prevent access to those cookies
- from JavaScript.
- (This can be enabled in Tomcat 6.0 and 5.5 by setting
+ from JavaScript. This is considered more secure, but it will prevent
+ JavaScripts from accessing the value of the cookie.
+ This feature can be controlled by <code>useHttpOnly</code> attribute
+ on the <strong>Context</strong> element.
+ (This feature is also implemented in latest versions of Tomcat 6.0 and 5.5,
+ but is off by default. It can be enabled by setting
<code>useHttpOnly="true"</code> on <strong>Context</strong> element in
a web application or in the global
<code>CATALINA_BASE/conf/context.xml</code> file).</p>
@@ -210,20 +249,21 @@ of Apache Tomcat.</p>
</subsection>
<subsection name="Cookies">
-
- <p>Tomcat no longer accepts non-specification compliant name only cookies
by
+
+ <p>Tomcat no longer accepts non-specification compliant name-only cookies
by
default. However, a new system property has been added,
<code>org.apache.tomcat.util.http.ServerCookie.ALLOW_NAME_ONLY</code>, that
- can be used to accept name only cookies.</p>
-
+ can be used to accept name-only cookies.</p>
+
</subsection>
<subsection name="Request attributes">
<p>The custom request attribute
<code>javax.servlet.request.ssl_session</code> provided to access the SSL
- session ID has been deprecated in favour of the new, specification defined
- request attribute <code>javax.servlet.request.ssl_session_id</code>.
Support
+ session ID has been deprecated in favour of the new standard request
+ attribute that is defined in the Servlet specification,
+ <code>javax.servlet.request.ssl_session_id</code>. Support
for the custom attribute will be removed in Tomcat 8.</p>
</subsection>
@@ -232,19 +272,19 @@ of Apache Tomcat.</p>
<p>To enable Comet to work correctly when running under a security manager,
the Comet classes have been moved from the <code>org.apache.catalina</code>
- package to the <code>org.apache.catalina.comet</code> package. Code using
- Comet will need to be updated and recompiled to reflect the new package
- name.</p>
-
+ package to the <code>org.apache.catalina.comet</code> package. Code that
+ uses Comet will need to be updated and recompiled to reflect the new
+ package name.</p>
+
</subsection>
<subsection name="XML validation">
<p>The configuration of XML validation has been simplified. The
<code>xmlValidation</code> and <code>xmlNamespaceAware</code> attributes
- have been removed from the <code><Host></code> element. These
+ have been removed from the <strong>Host</strong> element. These
attributes, along with <code>tldValidation</code> and
- <code>tldNamespaceAware</code>, are now set per
<code><Context></code>
+ <code>tldNamespaceAware</code>, are now set per <strong>Context</strong>
element. The defaults (<code>false</code> for each attribute) have not been
changed. However, in line with the requirements of the Servlet
specification, if the
@@ -268,7 +308,8 @@ of Apache Tomcat.</p>
priority.</p>
<p>The <code>org.apache.coyote.MAX_TRAILER_SIZE</code> has been removed and
- is replaced by the maxTrailerSize attribute of the Connector.</p>
+ is replaced by the maxTrailerSize attribute of the
+ <strong>Connector</strong>.</p>
</subsection>
@@ -277,12 +318,13 @@ of Apache Tomcat.</p>
<p>Whilst the Tomcat 7 internal API is broadly compatible with Tomcat 6
there have been many changes at the detail level and they are not binary
compatible. Developers of custom components that interact with
Tomcat's
- internals should review the JavaDoc for the relevant API. Of particular
note
- are:</p>
+ internals should review the JavaDoc for the relevant API.</p>
+
+ <p>Of particular note are:</p>
<ul>
- <li>Use of generics.</li>
<li>A standard implementation of the Lifecycle interface that all
components extend.</li>
+ <li>Use of generics.</li>
<li>The use of Context name rather than Context path as the unique
identifier for a Context within a Host.</li>
</ul>
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