VTD-XML is a "non-extractive" XML processing software API implementing Virtual Token Descriptor. Currently, VTD-XML only supports built-in entity references (" &s ' >
Designed to be random-access capable, it attempts to be both high-performance and memory-efficient. In addition, because VTD is inherent persistent, it can be saved on disk along side the XML document to achieve "parse-once, use many times.
" The "non-extractive" nature of VTD means that incremental, dynamic updates don't require re-serialization of irrelevant parts of the original document.
On a 1.5gHz Athlon PC, VTD-XML consistently outperforms SAX parsers with NULL content handler, delivering 25~35 MB/sec sustained throughput, without sacrifice random access. Its memory usage is typical between 1.3x~1.5 x the size of the XML document, with 1 being the XML itself.
What's New in This Release: [ read full changelog ]
· Full XPath node() support was added, and XPath text is supported.
· Sophisticated XPath rewrite features were added for performance optimization.
· Internal caching is now supported, and for certain complex expressions 1000x improvements are possible.
· A more permissive deletion condition was added to XMLModifier.
· Bugs in getElementFragment() and getContentFragment() were fixed.