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<h1>22. Virtuoso Functions Guide - jvm_ref_import</h1>
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<div id="text">
<h2>jvm_ref_import</h2>
<div class="refpurpose">Creates XML description of Java class</div>
<div class="funcsynopsis">
<span class="funcdef">varchar <span class="function">jvm_ref_import</span>
</span>
(<span class="paramdef">in <span class="parameter">files</span> any</span>,
<span class="paramdef">in <span class="parameter">classes</span> any</span>);
</div>
<div class="refsect1">
<div class="refsect1title">Description</div>
<p>This function will returns an XML description of the selected classes
from the source files.</p>
<p>The XML produced by the JVM_REF_IMPORT can be supplied to the
predefined XSL style sheet <span class="computeroutput">__javavm_type</span>
to produce the CREATE TYPE statements:</p>
<div>
<pre class="programlisting">
select xslt ('__javavm_type', xml_tree_doc (JVM_REF_IMPORT (files, classes)));
</pre>
</div>
<p>This can also be achieve directly using a single call to:</p>
<div>
<pre class="programlisting">
IMPORT_JAR (in files any, in classes any)
</pre>
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Parameters</div>
<div class="refsect2">
<span class="refsect2title">files – </span>
Null, string or vector of strings. This can contain one or many
Java .class files, .zip or .jar files to pick classes from. Null means
only the classes specified in the classes argument regardless of their
physical location.
</div>
<div class="refsect2">
<span class="refsect2title">classes – </span>
Wildcard string or a vector of strings specifying which classes to
describe in the resulting XML.
</div>
</div>
<div class="refsect1">
<div class="refsect1title">Return Types</div>
<p>A varchar of XML that describes the selected Java classes.</p>
</div>
<div class="refsect1">
<div class="refsect1title">Examples</div>
<a name="ex_jvm_ref_import" />
<div class="example">
<div class="exampletitle" />
<div>
<pre class="screen">
JVM_REF_IMPORT (NULL, vector ('java.lang.Object', 'java.lang.System'));
</pre>
</div>
<p>This will return an XML describing the Java classes java.lang.Object
and java.lang.System. Because the java.lang.System class is a subclass
of java.lang.Object the XML description for java.lang.System will contain
a reference to java.lang.Object and only the methods/members defined in
java.lang.System (because the methods/members of java.lang.Object will
be inherited).</p>
<div>
<pre class="screen">
JVM_REF_IMPORT (NULL, 'java.lang.System');
</pre>
</div>
<p>As opposed to the above example this will create an XML description
only for the java.lang.System class, but will also add the inherited
methods/members (from java.lang.Object) as if they were methods/members of
the java.lang.System class.</p>
</div>
</div>
<div class="refsect1">
<div class="refsect1title">See Also</div>
<p>
<a href="fn_import_jar.html">import_jar()</a>
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