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<h1>Highlights</h1>
<p>This page lists some of the most important new features introduced in Saxon 9.0</p>
<ol>
<li content="para">
<p>There is a <a class="bodylink" href="../../changes/s90/s9api90.xml">new Java API</a>, called <b>s9api</b>.
Existing APIs remain supported.</p>
</li>
<li content="para">
<p>The <b>command line</b> interfaces have received a revamp, while retaining backwards
compatibility for most options.</p>
</li>
<li content="para">
<p>The schema processor now supports <b>assertions</b>, as defined in XML Schema 1.1.</p>
</li>
<li content="para">
<p>A new extension function allows <b>multiple document output</b> in XQuery.</p>
</li>
<li content="para">
<p>It is now possible to <b>save a compiled schema</b> (the schema component model) as XML.</p>
</li>
<li content="para">
<p>There is a new model for <b>pull-based evaluation</b> of queries., improving the ability to integrate
into a pull-based pipeline architecture.</p>
</li>
<li content="para">
<p>The latest draft of the <b>XQJ</b> specification (XQuery API for Java) is implemented</p>
</li>
<li content="para">
<p>Number and date formatting has been added for a number of <b>additional European languages</b> including
Belgian French, Flemish, Dutch, Danish, Swedish, and Italian</p>
</li>
<li content="para">
<p>A number of new <b>optimizations</b> have been introduced. These include function and variable
inlining, wider use of automatic indexing, wider use of tail call optimization, hashing for
large xsl:choose expressions, and a speed-up of the DOM interface.</p>
</li>
<li content="para">
<p>
<b>Document projection</b> analyzes a query and discards the parts of the source tree that are
not needed to answer the query, giving a significant saving in tree-building time and memory.</p>
</li>
<li content="para">
<p>Optimized <b>expression trees</b> can now be output ("explained") in an XML format, making it amenable to
processing or graphical rendition.</p>
</li>
</ol>
<p>Please note that queries compiled into Java code are not backwards-compatible at this release; they must be recompiled.</p>
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