| --- |
| layout: post |
| status: PUBLISHED |
| published: true |
| title: Apache Click v2.3.0 Release Candidate 1 now available |
| excerpt: Apache Click 2.3.0 Release Candidate 1 is available for download. v2.3.0 |
| contains important new features including <a href="http://click.apache.org/docs/user-guide/html/ch04.html">Ajax</a> |
| support, <a href="http://click.apache.org/docs/user-guide/html/ch02s07.html">Page |
| Actions</a> and light-weight <a href="http://click.apache.org/docs/click-api/org/apache/click/Stateful.html">stateful |
| controls</a>. In addition there are new documentation, examples and a slew other |
| enhancements. |
| id: 98a99dcd-d5fb-4229-9e7f-cc4356df2133 |
| date: '2011-01-30 01:53:25 -0500' |
| categories: click |
| tags: |
| - release |
| - 2.3.0 |
| permalink: click/entry/apache_click_v2_3_01 |
| --- |
| <p>Apache Click 2.3.0 Release Candidate 1 is available for download. v2.3.0 contains important new features including <a href="http://click.apache.org/docs/user-guide/html/ch04.html">Ajax</a> support, <a href="http://click.apache.org/docs/user-guide/html/ch02s07.html">Page Actions</a> and light-weight <a href="http://click.apache.org/docs/click-api/org/apache/click/Stateful.html">stateful controls</a>. In addition there are new documentation, examples and a slew other enhancements.</p> |
| <ul> |
| <li><a href="http://click.apache.org/">Click Home</a></li> |
| <li><a href="http://click.apache.org/docs/roadmap-changes.html#2.3.0">Roadmap and Changes</a> - full list of new features, improvements and bug fixes</li> |
| <li><a href="http://click.apache.org/docs/upgrade-path.html#2.3.0">Upgrade Path</a> - please see the upgrade path when upgrading from 2.2.0 or earlier.</li> |
| <li><a href="http://www.apache.org/dyn/closer.cgi/click/click/2.3.0-RC1/click-2.3.0-RC1.zip">Download Click 2.3.0-RC1</a></li> |
| <li><a href="http://repo1.maven.org/maven2/org/apache/click/">Maven bundles</a> </li> |
| <li><a href="http://click.avoka.com/click-examples/">Live examples</a></li> |
| </ul> |
| <p><b>New features and improvement:</b></p> |
| <ul> |
| <li><a href="http://click.apache.org/docs/user-guide/html/ch04.html">Ajax</a> support.</li> |
| <li><a href="http://click.apache.org/docs/user-guide/html/ch02s07.html">Page Action</a> support. </li> |
| <li><a href="http://click.apache.org/docs/click-api/org/apache/click/Stateful.html">Stateful</a> Controls.</li> |
| <li>Improve fields to only be processed if they have an incoming request<br /> |
| parameter. This improvement streamlines dynamic forms<br /> |
| since fields added at runtime during s POST request won't<br /> |
| bind their values and won't be validated for that<br /> |
| request. In subsequent requests the Field will have an<br /> |
| incoming parameter and so will have it's value bound and<br /> |
| validated. Another advantage is that dynamically added Fields won't<br /> |
| have their default value overridden in the POST request they<br /> |
| were added in. This issue has been raised by Nirmal<br /> |
| Solanki [<a href="https://issues.apache.org/jira/browse/CLK-722" target="_blank">CLK-722</a>]. </li> |
| <li> Added automapping support for GAE with a caveat that page templates must be placed under the folders <tt>page</tt> or <tt>pages</tt>. This issue was raised by Ke Sun [<a href="https://issues.apache.org/jira/browse/CLK-639" target="_blank">CLK-639</a>]. </li> |
| <li> Added <a href="http://click.apache.org/docs/click-api/org/apache/click/service/MessagesMapService.html">MessagesMapService</a> interface to support pluggable messages map implementations [<a href="https://issues.apache.org/jira/browse/CLK-655" target="_blank">CLK-655</a>]. </li> |
| <li> Improved <a href="http://click.apache.org/docs/click-api/org/apache/click/util/MessagesMap.html">MessagesMap</a> to be extendable and customizable [<a href="https://issues.apache.org/jira/browse/CLK-728" target="_blank">CLK-728</a>]. </li> |
| <li> Added support for loading <a href="http://click.apache.org/docs/extras-api/org/apache/click/extras/control/DateField.html">DateField</a> translations for month and day names from the JDK. [<a href="https://issues.apache.org/jira/browse/CLK-650" target="_blank">CLK-650</a>]. </li> |
| <li> Added support for Menus that do not have <tt>roles</tt> defined. If no roles are defined, <a href="http://click.apache.org/docs/extras-api/org/apache/click/extras/control/Menu.html#isUserInRoles%28%29">IsUserInRoles</a> passes a <tt>null</tt> argument to <a href="http://click.apache.org/docs/extras-api/org/apache/click/extras/security/AccessController.html#hasAccess%28javax.servlet.http.HttpServletRequest,%20java.lang.String%29">hasAccess</a> to determine whether access is permitted to menus without roles [<a href="https://issues.apache.org/jira/browse/CLK-724" target="_blank">CLK-724</a>]. </li> |
| <li> Added support for absolute page classnames when configuring pages in <tt>click.xml</tt>. Absolute classnames aids with IDE hot-linking and is less confusing to use. [<a href="https://issues.apache.org/jira/browse/CLK-704" target="_blank">CLK-704</a>]. </li> |
| <li>Fixed escaping of control values and attributes to be XML friendly<br /> |
| in order to support Ajax requests. Previously all HTML<br /> |
| characters was escaped, now only the following characters<br /> |
| are escaped: &lt;, &gt;, ", ', &amp; [<a href="https://issues.apache.org/jira/browse/CLK-674" target="_blank">CLK-674</a>]. </li> |
| </ul> |
| <p><b>New documentation:</b></p> |
| <ul> |
| <li>Added a section covering the new <a href="http://click.apache.org/docs/user-guide/html/ch03s08.html">Behavior</a> support.</li> |
| <li>Added a chapter on <a href="http://click.apache.org/docs/user-guide/html/ch04.html">Ajax</a>, covering <a href="http://click.apache.org/docs/user-guide/html/ch04s02.html">AjaxBehaviors</a>, <a href="http://click.apache.org/docs/user-guide/html/ch04s03.html">Ajax execution flow</a> and a full <a href="http://click.apache.org/docs/user-guide/html/ch04s04.html">example</a>.</li> |
| <li>Added a section covering the new <a href="http://click.apache.org/docs/user-guide/html/ch02s07.html">Page Action</a> support. </li> |
| </ul> |
| <p></p> |
| <p><b>New examples:</b></p> |
| <ul> |
| <li>Added <a class="external" href="http://click.avoka.com/click-examples/" target="_blank">examples</a> showcasing the new Ajax support. See the Ajax Menu for the full list of examples.</li> |
| <li>Added an example showing how to integrate a <a class="external" href="http://click.avoka.com/click-examples/panel/tabbed-panel-with-controls.htm" target="_blank">TabbedPanel, Form and Table</a>.</li> |
| <li>Added an example showing a <a class="external" href="http://click.avoka.com/click-examples/panel/stateful-tabbed-panel-demo.htm" target="_blank">Stateful TabbedPanel</a>.</li> |
| <li>Added an example <a href="http://click.avoka.com/click-examples/control/field-separator-demo.htm" target="_blank">FieldSeparator Control</a> and example usage page [<a href="https://issues.apache.org/jira/browse/CLK-544" target="_blank">CLK-544</a>]. </li> |
| </ul> |
| <p><b>Removed:</b> </p> |
| <ul> |
| <li>Removed the ability to automatically <tt>bypass validation</tt><br /> |
| for Forms through JavaScript. This ability was added in<br /> |
| 2.2.0 but raised concerns over security and was dropped for<br /> |
| 2.3.0. If you used this feature in existing applications,<br /> |
| please see the <a href="http://click.apache.org/docs/upgrade-path.html#removed-bypass-validation">Upgrade path</a> for a safe alternative to <tt>bypass validation</tt>. We apologize for the inconvenience. </li> |
| </ul> |
| <p></p> |
| <p><b>Deprecated:</b></p> |
| <ul> |
| <li>Deprecated stateful page support: <a href="http://click.apache.org/docs/click-api/org/apache/click/Page.html#setStateful%28boolean%29">Page.setStateful()</a>. </li> |
| <li class="change"> Stateful pages had the following issues: <br /> |
| <ul> |
| <li> Stateful pages was introduced to make it easier to<br /> |
| store page state across multiple HTTP requests. However<br /> |
| developing a stateful page is very different from developing<br /> |
| a stateless one and this lead to Click applications that are<br /> |
| inconsistent and harder to maintain. </li> |
| <li> In addition stateful page support has never been<br /> |
| implemented consistently across the framework and some<br /> |
| components did not work correctly. </li> |
| <li> Stateful pages are very coarse grained, making it<br /> |
| difficult to control which objects are stored in the<br /> |
| session. </li> |
| <li> Stateful pages have also introduced unnecessary<br /> |
| complexity in the framework itself, which can now be phased<br /> |
| out. </li> |
| </ul> |
| <p>Unfortunately there is no direct upgrade path from a stateful page.<br /> |
| However the majority of use cases are catered for by the new<br /> |
| stateful support in the controls: Table, Form, TabbedPanel,<br /> |
| Field and AbstractLink. </p> |
| </li> |
| </ul> |
| <p></p> |
| <p>The Apache Click team </p> |
