Hi all, A new enhanced implementation of my JSP like Cocoon Tag-Library is now available. I think it is now ready to go into scratchpad ;-). The first version I have posted some weeks ago. I send the Code of the Taglib implementation as a PATH in the next 10 minutes, to keep this mail smaller than 100k. I have appended examples (webapp.zip, parent.html) Three different Tag Interfaces are now available: **Tag**, a Tag which does not consume or produce content. Example is org.apache.cocoon.taglib.i18n.LocaleTag which only defines a "LocaleContext" for the embedded child Tags. A child Tag can use LocaleTag localeTag = (LocaleTag) TagSupport.findAncestorWithClass(this, LocaleTag.class); to find its enclosing LocaleTag. LocaleTag can also select the Locale as an attribute from the request, session, or application (<i18n:locale localeRef="$session/locale">). See also parent.xhtml in webapp.zip attachment (sorry for using xhtml directly and not XML/XSLT). **XMLProducerTag**, a Tag which only produces content. Example org.apache.cocoon.taglib.test.HelloWorldTag which prints out "Hello World" in german or english dependent of the enclosing LocaleTag. **XMLConsumerTag**, consumes content only (no examples in the moment) **TransformerTag**, works like a Transformer see org.apache.cocoon.taglib.string.UpperCaseTag which translate the text content to upper case. **IterationTag**, for Tags which need to iterate. A simple example for a IterationTag is org.apache.cocoon.taglib.test. IterationTestTag. The Iteration Tag itself does not implement the Iteration loop, this is implemented by the TagTransformer (see start and endElement Method). With IterationTestTag you can repeat the content as specified by count attribute (default is 2). Tag attributes are automatic mapped to the corresponding set method. The Taglib implementation also allows setting and getting Variables. The implementation is based on the Jakarta JXPath Project. There are predefined variables request, session and application which are mapped to Cocoon Request, Session and Context Object. This works like JSP request, session and application scope. Look at org.apache.cocoon.taglib.VarTagSupport for the implementation. The VariableContext is implemented as a RequestLifecycleComponent, so each Pipeline has it's own set of variables. Example: The org.apache.cocoon.taglib.test.acting.TagtestAction adds one attribute BrowserLocales (Enumeration of the Browser Locales) to the Request and one attribute RequestInfo (Collection, five entries) to the Session. <jxpath:forEach var="i" items="$request/BrowserLocales" > <li><jxpath:out value="$i/language" /></li> </jxpath:forEach> forEach Tag (org.apache.cocoon.taglib.jxpath.core.ForEachTag) loops over all Browser Locales and assign the current value to the variable i. The out Tag selects from the variable i (type Locale) the language property. This works, because JXPath applies Xpath expressions to graphs of objects of all kinds, JavaBeans, Maps, DOM etc, including mixtures thereof. I have added support for Cocoon Request, Session and Context. <jxpath:out value="$session/RequestInfo[5]/language" /> selects the attribute RequestInfo from the Session. The 5th value of the returned Collection, a Locale, is selected and the language property is send out to the SAX-Pipeline. With the OutTag is is also possible to set attributes. <jxpath:out var="$session/language" value="$session/RequestInfo[5]/language" /> Now the session attribute language is set with the result of the value expression. Please look at the "parent.html" attachment. This file is the output of the parent.xhtml (webapp.zip). I you want to see a live demo, you can add the examples of webapp.zip file to your cocoon engine. Add the compiled Classes of taglib.zip (extract from my PATCH) to your cocoon engine. You need to add the content from tag.xconf to your cocoon.xconf and configure the rest of the files as a subsitemap (see sitemap.xmap) in your webapplication. Start with TaglibTest.xhtml. I have also implemented a SourceTag, wich is able to insert the output of a Source. I have used Cocoon 2.0.3, may be this tag is not working with 2.1 HEAD because of changes in the Source implementation. With this SourceTag it is possible to design a page as a set of components (pipelines). The SourceTag is used in the variable-r.xhtml example. I hope my Java code is better than my English explanation ;-) Regards, Volker (See attached file: webapp.zip)(See attached file: parent.html)
webapp.zip
Description: .ZIP File
parent.html
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