expressionevaluator.html

本体推理工具 共八个例子:从如何建立本体到做一些简单的的本体推理

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<TD><CODE><B><A HREF="../../../../../org/semanticweb/kaon2/extensionapi/builtins/ExpressionEvaluator.html#registerBuiltinFunction(java.lang.String, java.lang.Class)">registerBuiltinFunction</A></B>(java.lang.String&nbsp;functionName,
                        java.lang.Class&lt;T&gt;&nbsp;evaluatorClass)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Registers a builtin function under given name.</TD>
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<A NAME="ExpressionEvaluator()"><!-- --></A><H3>
ExpressionEvaluator</H3>
<PRE>
public <B>ExpressionEvaluator</B>()</PRE>
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<A NAME="evaluate(org.semanticweb.kaon2.extensionapi.builtins.ExpressionEvaluatorContext, org.semanticweb.kaon2.api.logic.Term[])"><!-- --></A><H3>
evaluate</H3>
<PRE>
public abstract <A HREF="../../../../../org/semanticweb/kaon2/api/logic/Term.html" title="interface in org.semanticweb.kaon2.api.logic">Term</A> <B>evaluate</B>(<A HREF="../../../../../org/semanticweb/kaon2/extensionapi/builtins/ExpressionEvaluatorContext.html" title="interface in org.semanticweb.kaon2.extensionapi.builtins">ExpressionEvaluatorContext</A>&nbsp;context,
                              <A HREF="../../../../../org/semanticweb/kaon2/api/logic/Term.html" title="interface in org.semanticweb.kaon2.api.logic">Term</A>[]&nbsp;boundValues)
                       throws <A HREF="../../../../../org/semanticweb/kaon2/api/KAON2Exception.html" title="class in org.semanticweb.kaon2.api">KAON2Exception</A></PRE>
<DL>
<DD>Invoked to evaluate the operation on given objects.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>context</CODE> - the context for the evaluation<DD><CODE>boundValues</CODE> - the array of arguments
<DT><B>Returns:</B><DD>the value of the evaluator
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../org/semanticweb/kaon2/api/KAON2Exception.html" title="class in org.semanticweb.kaon2.api">KAON2Exception</A></CODE> - thrown if there is an error in evaluating the object</DL>
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<A NAME="getNumberOfArguments()"><!-- --></A><H3>
getNumberOfArguments</H3>
<PRE>
public abstract int <B>getNumberOfArguments</B>()</PRE>
<DL>
<DD>Returns the number of arguments.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the number of arguments</DL>
</DD>
</DL>
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<A NAME="getArgument(int)"><!-- --></A><H3>
getArgument</H3>
<PRE>
public abstract <A HREF="../../../../../org/semanticweb/kaon2/extensionapi/builtins/ExpressionEvaluator.html" title="class in org.semanticweb.kaon2.extensionapi.builtins">ExpressionEvaluator</A> <B>getArgument</B>(int&nbsp;index)</PRE>
<DL>
<DD>Returns the argument with a given index.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index
<DT><B>Returns:</B><DD>the argument with a given index</DL>
</DD>
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<A NAME="registerBuiltinFunction(java.lang.String, java.lang.Class)"><!-- --></A><H3>
registerBuiltinFunction</H3>
<PRE>
public static &lt;T extends <A HREF="../../../../../org/semanticweb/kaon2/extensionapi/builtins/ExpressionEvaluator.html" title="class in org.semanticweb.kaon2.extensionapi.builtins">ExpressionEvaluator</A>&gt; void <B>registerBuiltinFunction</B>(java.lang.String&nbsp;functionName,
                                                                           java.lang.Class&lt;T&gt;&nbsp;evaluatorClass)</PRE>
<DL>
<DD>Registers a builtin function under given name. The <code>evaluatorClass</code> parameter should point to
 the class implementing the evaluator. The class must have a public constructor accepting
 <code>ExpressionEvaluator...</code> as arguments.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>functionName</CODE> - the name of the function<DD><CODE>evaluatorClass</CODE> - the class of the evaluator</DL>
</DD>
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