jython.html

数据挖掘的最常用工具。由于开源

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<A NAME="CLASS_PYTHONOBJECTINPUTSTREAM"><!-- --></A><H3>
CLASS_PYTHONOBJECTINPUTSTREAM</H3>
<PRE>
public static final java.lang.String <B>CLASS_PYTHONOBJECTINPUTSTREAM</B></PRE>
<DL>
<DD>the classname of the Python ObjectInputStream
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../constant-values.html#weka.core.Jython.CLASS_PYTHONOBJECTINPUTSTREAM">Constant Field Values</A></DL>
</DL>

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<A NAME="Jython()"><!-- --></A><H3>
Jython</H3>
<PRE>
public <B>Jython</B>()</PRE>
<DL>
<DD>default constructor, tries to instantiate a Python Interpreter
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="getInterpreter()"><!-- --></A><H3>
getInterpreter</H3>
<PRE>
public java.lang.Object <B>getInterpreter</B>()</PRE>
<DL>
<DD>returns the currently used Python Interpreter
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the interpreter, can be null</DL>
</DD>
</DL>
<HR>

<A NAME="invoke(java.lang.String, java.lang.Class[], java.lang.Object[])"><!-- --></A><H3>
invoke</H3>
<PRE>
public java.lang.Object <B>invoke</B>(java.lang.String&nbsp;methodName,
                               java.lang.Class[]&nbsp;paramClasses,
                               java.lang.Object[]&nbsp;paramValues)</PRE>
<DL>
<DD>executes the specified method on the current interpreter and returns the 
 result, if any
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - the object the method should be called from,
                                e.g., a Python Interpreter<DD><CODE>methodName</CODE> - the name of the method<DD><CODE>paramClasses</CODE> - the classes of the parameters<DD><CODE>paramValues</CODE> - the values of the parameters
<DT><B>Returns:</B><DD>the return value of the method, if any (in that case null)</DL>
</DD>
</DL>
<HR>

<A NAME="isPresent()"><!-- --></A><H3>
isPresent</H3>
<PRE>
public static boolean <B>isPresent</B>()</PRE>
<DL>
<DD>returns whether the Jython classes are present or not, i.e. whether the 
 classes are in the classpath or not
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>whether the Jython classes are available</DL>
</DD>
</DL>
<HR>

<A NAME="newInterpreter()"><!-- --></A><H3>
newInterpreter</H3>
<PRE>
public static java.lang.Object <B>newInterpreter</B>()</PRE>
<DL>
<DD>initializes and returns a Python Interpreter
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the interpreter or null if Jython classes not present</DL>
</DD>
</DL>
<HR>

<A NAME="newInstance(java.io.File, java.lang.Class)"><!-- --></A><H3>
newInstance</H3>
<PRE>
public static java.lang.Object <B>newInstance</B>(java.io.File&nbsp;file,
                                           java.lang.Class&nbsp;template)</PRE>
<DL>
<DD>loads the module and returns a new instance of it as instance of the
 provided Java class template.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filename</CODE> - the path to the Jython module, incl. filename<DD><CODE>template</CODE> - the template for the returned Java object
<DT><B>Returns:</B><DD>the Jython object</DL>
</DD>
</DL>
<HR>

<A NAME="newInstance(java.io.File, java.lang.Class, java.io.File[])"><!-- --></A><H3>
newInstance</H3>
<PRE>
public static java.lang.Object <B>newInstance</B>(java.io.File&nbsp;file,
                                           java.lang.Class&nbsp;template,
                                           java.io.File[]&nbsp;paths)</PRE>
<DL>
<DD>loads the module and returns a new instance of it as instance of the
 provided Java class template. The paths are added to 'sys.path' - can 
 be used if the module depends on other Jython modules.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filename</CODE> - the path to the Jython module, incl. filename<DD><CODE>template</CODE> - the template for the returned Java object<DD><CODE>paths</CODE> - additional paths to add to "sys.path"
<DT><B>Returns:</B><DD>the Jython object</DL>
</DD>
</DL>
<HR>

<A NAME="invoke(java.lang.Object, java.lang.String, java.lang.Class[], java.lang.Object[])"><!-- --></A><H3>
invoke</H3>
<PRE>
public static java.lang.Object <B>invoke</B>(java.lang.Object&nbsp;o,
                                      java.lang.String&nbsp;methodName,
                                      java.lang.Class[]&nbsp;paramClasses,
                                      java.lang.Object[]&nbsp;paramValues)</PRE>
<DL>
<DD>executes the specified method and returns the result, if any
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - the object the method should be called from,
                                e.g., a Python Interpreter<DD><CODE>methodName</CODE> - the name of the method<DD><CODE>paramClasses</CODE> - the classes of the parameters<DD><CODE>paramValues</CODE> - the values of the parameters
<DT><B>Returns:</B><DD>the return value of the method, if any (in that case null)</DL>
</DD>
</DL>
<HR>

<A NAME="deserialize(java.io.InputStream)"><!-- --></A><H3>
deserialize</H3>
<PRE>
public static java.lang.Object <B>deserialize</B>(java.io.InputStream&nbsp;in)</PRE>
<DL>
<DD>deserializes the Python Object from the stream
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>in</CODE> - the stream to use
<DT><B>Returns:</B><DD>the deserialized object</DL>
</DD>
</DL>
<HR>

<A NAME="getRevision()"><!-- --></A><H3>
getRevision</H3>
<PRE>
public java.lang.String <B>getRevision</B>()</PRE>
<DL>
<DD>Returns the revision string.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/core/RevisionHandler.html#getRevision()">getRevision</A></CODE> in interface <CODE><A HREF="../../weka/core/RevisionHandler.html" title="interface in weka.core">RevisionHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the revision</DL>
</DD>
</DL>
<HR>

<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
<PRE>
public static void <B>main</B>(java.lang.String[]&nbsp;args)</PRE>
<DL>
<DD>If no arguments are given, it just prints the presence of the Jython
 classes, otherwise it expects a Jython filename to execute.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - commandline arguments</DL>
</DD>
</DL>
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