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Introspector (Velocity 1.7 API)
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SUMMARY: NESTED | <A HREF="#fields_inherited_from_class_org.apache.velocity.util.introspection.IntrospectorBase">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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org.apache.velocity.util.introspection</FONT>
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Class Introspector</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html" title="class in org.apache.velocity.util.introspection">org.apache.velocity.util.introspection.IntrospectorBase</A>
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><B>org.apache.velocity.util.introspection.Introspector</B>
</PRE>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../org/apache/velocity/util/introspection/SecureIntrospectorImpl.html" title="class in org.apache.velocity.util.introspection">SecureIntrospectorImpl</A></DD>
</DL>
<HR>
<DL>
<DT>public class <B>Introspector</B><DT>extends <A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html" title="class in org.apache.velocity.util.introspection">IntrospectorBase</A></DL>
<P>
This basic function of this class is to return a Method
object for a particular class given the name of a method
and the parameters to the method in the form of an Object[]
The first time the Introspector sees a
class it creates a class method map for the
class in question. Basically the class method map
is a Hastable where Method objects are keyed by a
concatenation of the method name and the names of
classes that make up the parameters.
For example, a method with the following signature:
public void method(String a, StringBuffer b)
would be mapped by the key:
"method" + "java.lang.String" + "java.lang.StringBuffer"
This mapping is performed for all the methods in a class
and stored for
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Id: Introspector.java 687177 2008-08-19 22:00:32Z nbubna $</DD>
<DT><B>Author:</B></DT>
<DD><a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>, <a href="mailto:bob@werken.com">Bob McWhirter</a>, <a href="mailto:szegedia@freemail.hu">Attila Szegedi</a>, <a href="mailto:paulo.gaspar@krankikom.de">Paulo Gaspar</a>, <a href="mailto:henning@apache.org">Henning P. Schmiedehausen</a></DD>
</DL>
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<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
<!-- =========== FIELD SUMMARY =========== -->
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<B>Field Summary</B></FONT></TD>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from class org.apache.velocity.util.introspection.<A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html" title="class in org.apache.velocity.util.introspection">IntrospectorBase</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html#log">log</A></CODE></TD>
</TR>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/Introspector.html#Introspector(org.apache.velocity.runtime.log.Log)">Introspector</A></B>(<A HREF="../../../../../org/apache/velocity/runtime/log/Log.html" title="class in org.apache.velocity.runtime.log">Log</A> log)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/Introspector.html#Introspector(org.apache.velocity.runtime.RuntimeLogger)">Introspector</A></B>(<A HREF="../../../../../org/apache/velocity/runtime/RuntimeLogger.html" title="interface in org.apache.velocity.runtime">RuntimeLogger</A> logger)</CODE>
<BR>
<B>Deprecated.</B> <I>RuntimeLogger is deprecated. Use Introspector(Log log).</I></TD>
</TR>
</TABLE>
<!-- ========== METHOD SUMMARY =========== -->
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<TD COLSPAN=2><FONT SIZE="+2">
<B>Method Summary</B></FONT></TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/reflect/Method.html" title="class or interface in java.lang.reflect">Method</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/Introspector.html#getMethod(java.lang.Class, java.lang.String, java.lang.Object[])">getMethod</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Class.html" title="class or interface in java.lang">Class</A> c,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[] params)</CODE>
<BR>
Gets the method defined by <code>name</code> and
<code>params</code> for the Class <code>c</code>.</TD>
</TR>
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<A NAME="methods_inherited_from_class_org.apache.velocity.util.introspection.IntrospectorBase"><!-- --></A>
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<TD><B>Methods inherited from class org.apache.velocity.util.introspection.<A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html" title="class in org.apache.velocity.util.introspection">IntrospectorBase</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html#getIntrospectorCache()">getIntrospectorCache</A></CODE></TD>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="Introspector(org.apache.velocity.runtime.log.Log)"><!-- --></A><H3>
Introspector</H3>
<PRE>
public <B>Introspector</B>(<A HREF="../../../../../org/apache/velocity/runtime/log/Log.html" title="class in org.apache.velocity.runtime.log">Log</A> log)</PRE>
<DL>
<DT><B>Parameters:</B><DD><CODE>log</CODE> - A Log object to use for the introspector.<DT><B>Since:</B></DT>
<DD>1.5</DD>
</DL>
<HR>
<A NAME="Introspector(org.apache.velocity.runtime.RuntimeLogger)"><!-- --></A><H3>
Introspector</H3>
<PRE>
public <B>Introspector</B>(<A HREF="../../../../../org/apache/velocity/runtime/RuntimeLogger.html" title="interface in org.apache.velocity.runtime">RuntimeLogger</A> logger)</PRE>
<DL>
<DD><B>Deprecated.</B> <I>RuntimeLogger is deprecated. Use Introspector(Log log).</I>
<P>
<DT><B>Parameters:</B><DD><CODE>logger</CODE> - A runtime logger object.</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<A NAME="getMethod(java.lang.Class, java.lang.String, java.lang.Object[])"><!-- --></A><H3>
getMethod</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/reflect/Method.html" title="class or interface in java.lang.reflect">Method</A> <B>getMethod</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Class.html" title="class or interface in java.lang">Class</A> c,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>[] params)
throws <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></PRE>
<DL>
<DD>Gets the method defined by <code>name</code> and
<code>params</code> for the Class <code>c</code>.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html#getMethod(java.lang.Class, java.lang.String, java.lang.Object[])">getMethod</A></CODE> in class <CODE><A HREF="../../../../../org/apache/velocity/util/introspection/IntrospectorBase.html" title="class in org.apache.velocity.util.introspection">IntrospectorBase</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - Class in which the method search is taking place<DD><CODE>name</CODE> - Name of the method being searched for<DD><CODE>params</CODE> - An array of Objects (not Classes) that describe the
the parameters
<DT><B>Returns:</B><DD>The desired Method object.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - When the parameters passed in can not be used for introspection.</DL>
</DD>
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