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| |
| <page |
| xmlns:cinclude="http://apache.org/cocoon/include/1.0" |
| > |
| |
| <content> |
| <p> |
| The multi-channel publishing subsystem of Cocoon is based on <em>XML processing pipelines</em>. |
| </p> |
| <p> |
| A pipeline consists of: |
| <ul> |
| <li>A <em>Generator</em>, which generates XML data for further processing.</li> |
| |
| <li> |
| Zero or more <em>Transformers</em>, which process, transform or complete |
| the XML data. |
| </li> |
| |
| <li> |
| A <em>Serializer</em>, which transforms the XML data into the appropriate |
| text or binary format for the client. |
| </li> |
| </ul> |
| </p> |
| <p> |
| The are many types of Generators, Transformers and Serializers, but |
| a typical pipeline could consist of: |
| <ul> |
| <li> |
| A <em>FileGenerator</em> which produces XML data by parsing XML files or XML documents |
| retrieved via an HTTP request. |
| </li> |
| <li> |
| An <em>XSLT transformer</em> which converts the XML vocabulary to another, for example |
| XHTML. |
| </li> |
| <li> |
| An <em>HTMLSerializer</em> which sets the <em>text/html</em> content-type and sends |
| the XML elements as HTML to the output. |
| </li> |
| </ul> |
| </p> |
| <p> |
| The building and configuration of the pipelines is controlled by the <em>sitemap</em>, an |
| XML document used by Cocoon to dynamically instantiate and activate pipelines. |
| </p> |
| <p> |
| The next pages show several examples using various components. |
| </p> |
| </content> |
| </page> |