-
- <section id="componentmodulesalvis">
- <title>ALVIS Record Model and Filter Module</title>
- <para>
- The Alvis filter for XML files is an XSLT based input
- filter.
- It indexes element and attribute content of any thinkable XML format
- using full XPATH support, a feature which the standard Zebra
- GRS SGML and XML filters lacked. The indexed documents are
- parsed into a standard XML DOM tree, which restricts record size
- according to availability of memory.
- </para>
- <para>
- The Alvis filter
- uses XSLT display stylesheets, which let
- the Zebra DB administrator associate multiple, different views on
- the same XML document type. These views are chosen on-the-fly in
- search time.
- </para>
- <para>
- In addition, the Alvis filter configuration is not bound to the
- arcane BIB-1 Z39.50 library catalogue indexing traditions and
- folklore, and is therefore easier to understand.
- </para>