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| Velocity 1.4 API: Class ClassMap |
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| SUMMARY: <A HREF="#inner_class_summary">INNER</A> | <A HREF="#field_summary">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> |
| <BR> |
| Class ClassMap</H2> |
| <PRE> |
| java.lang.Object |
| | |
| +--<B>org.apache.velocity.util.introspection.ClassMap</B> |
| </PRE> |
| <HR> |
| <DL> |
| <DT>public class <B>ClassMap</B><DT>extends java.lang.Object</DL> |
| |
| <P> |
| A cache of introspection information for a specific class instance. |
| Keys <CODE>java.lang.Method</CODE> objects by a concatenation of the |
| method name and the names of classes that make up the parameters. |
| <P> |
| <DL> |
| <DT><B>Version: </B><DD>$Id: ClassMap.java,v 1.20.8.1 2004/03/03 23:23:08 geirm Exp $</DD> |
| <DT><B>Author: </B><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:geirm@optonline.net">Geir Magnusson Jr.</a></DD> |
| </DL> |
| <HR> |
| |
| <P> |
| <!-- ======== INNER CLASS SUMMARY ======== --> |
| |
| <A NAME="inner_class_summary"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=2><FONT SIZE="+2"> |
| <B>Inner Class Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static class</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.CacheMiss.html">ClassMap.CacheMiss</A></B></CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static class</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.MethodInfo.html">ClassMap.MethodInfo</A></B></CODE> |
| |
| <BR> |
| Used for the iterative discovery process for public methods.</TD> |
| </TR> |
| </TABLE> |
| |
| <!-- =========== FIELD SUMMARY =========== --> |
| |
| <A NAME="field_summary"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=2><FONT SIZE="+2"> |
| <B>Field Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static <A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.CacheMiss.html">ClassMap.CacheMiss</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#CACHE_MISS">CACHE_MISS</A></B></CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private java.lang.Class</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#clazz">clazz</A></B></CODE> |
| |
| <BR> |
| Class passed into the constructor used to as |
| the basis for the Method map.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private java.util.Map</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#methodCache">methodCache</A></B></CODE> |
| |
| <BR> |
| Cache of Methods, or CACHE_MISS, keyed by method |
| name and actual arguments used to find it.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private <A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html">MethodMap</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#methodMap">methodMap</A></B></CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static java.lang.Object</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#OBJECT">OBJECT</A></B></CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| |
| <A NAME="constructor_summary"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=2><FONT SIZE="+2"> |
| <B>Constructor Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private </CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#ClassMap()">ClassMap</A></B>()</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> </CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#ClassMap(java.lang.Class)">ClassMap</A></B>(java.lang.Class clazz)</CODE> |
| |
| <BR> |
| Standard constructor</TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ========== METHOD SUMMARY =========== --> |
| |
| <A NAME="method_summary"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=2><FONT SIZE="+2"> |
| <B>Method Summary</B></FONT></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> java.lang.reflect.Method</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#findMethod(java.lang.String, java.lang.Object[])">findMethod</A></B>(java.lang.String name, |
| java.lang.Object[] params)</CODE> |
| |
| <BR> |
| Find a Method using the methodKey |
| provided.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static java.lang.reflect.Method[]</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#getAccessibleMethods(java.lang.Class)">getAccessibleMethods</A></B>(java.lang.Class clazz)</CODE> |
| |
| <BR> |
| Retrieves public methods for a class.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#getAccessibleMethods(java.lang.Class, org.apache.velocity.util.introspection.ClassMap.MethodInfo[], int)">getAccessibleMethods</A></B>(java.lang.Class clazz, |
| <A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.MethodInfo.html">ClassMap.MethodInfo</A>[] methodInfos, |
| int upcastCount)</CODE> |
| |
| <BR> |
| Recursively finds a match for each method, starting with the class, and then |
| searching the superclass and interfaces.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>(package private) java.lang.Class</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#getCachedClass()">getCachedClass</A></B>()</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static java.lang.reflect.Method</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#getPublicMethod(java.lang.Class, java.lang.String, java.lang.Class[])">getPublicMethod</A></B>(java.lang.Class clazz, |
| java.lang.String name, |
| java.lang.Class[] paramTypes)</CODE> |
| |
| <BR> |
| Looks up the method with specified name and signature in the first public |
| superclass or implemented interface of the class.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>static java.lang.reflect.Method</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#getPublicMethod(java.lang.reflect.Method)">getPublicMethod</A></B>(java.lang.reflect.Method method)</CODE> |
| |
| <BR> |
| For a given method, retrieves its publicly accessible counterpart.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private java.lang.String</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#makeMethodKey(java.lang.reflect.Method)">makeMethodKey</A></B>(java.lang.reflect.Method method)</CODE> |
| |
| <BR> |
| Make a methodKey for the given method using |
| the concatenation of the name and the |
| types of the method parameters.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static java.lang.String</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#makeMethodKey(java.lang.String, java.lang.Object[])">makeMethodKey</A></B>(java.lang.String method, |
| java.lang.Object[] params)</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.html#populateMethodCache()">populateMethodCache</A></B>()</CODE> |
| |
| <BR> |
| Populate the Map of direct hits.</TD> |
| </TR> |
| </TABLE> |
| <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
| <TD><B>Methods inherited from class java.lang.Object</B></TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><clinit>, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait</CODE></TD> |
| </TR> |
| </TABLE> |
| |
| <P> |
| |
| <!-- ============ FIELD DETAIL =========== --> |
| |
| <A NAME="field_detail"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=1><FONT SIZE="+2"> |
| <B>Field Detail</B></FONT></TD> |
| </TR> |
| </TABLE> |
| |
| <A NAME="CACHE_MISS"><!-- --></A><H3> |
| CACHE_MISS</H3> |
| <PRE> |
| private static final <A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.CacheMiss.html">ClassMap.CacheMiss</A> <B>CACHE_MISS</B></PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="OBJECT"><!-- --></A><H3> |
| OBJECT</H3> |
| <PRE> |
| private static final java.lang.Object <B>OBJECT</B></PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="clazz"><!-- --></A><H3> |
| clazz</H3> |
| <PRE> |
| private java.lang.Class <B>clazz</B></PRE> |
| <DL> |
| <DD>Class passed into the constructor used to as |
| the basis for the Method map.</DL> |
| <HR> |
| |
| <A NAME="methodCache"><!-- --></A><H3> |
| methodCache</H3> |
| <PRE> |
| private java.util.Map <B>methodCache</B></PRE> |
| <DL> |
| <DD>Cache of Methods, or CACHE_MISS, keyed by method |
| name and actual arguments used to find it.</DL> |
| <HR> |
| |
| <A NAME="methodMap"><!-- --></A><H3> |
| methodMap</H3> |
| <PRE> |
| private <A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html">MethodMap</A> <B>methodMap</B></PRE> |
| <DL> |
| </DL> |
| |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| |
| <A NAME="constructor_detail"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=1><FONT SIZE="+2"> |
| <B>Constructor Detail</B></FONT></TD> |
| </TR> |
| </TABLE> |
| |
| <A NAME="ClassMap(java.lang.Class)"><!-- --></A><H3> |
| ClassMap</H3> |
| <PRE> |
| public <B>ClassMap</B>(java.lang.Class clazz)</PRE> |
| <DL> |
| <DD>Standard constructor</DL> |
| <HR> |
| |
| <A NAME="ClassMap()"><!-- --></A><H3> |
| ClassMap</H3> |
| <PRE> |
| private <B>ClassMap</B>()</PRE> |
| <DL> |
| </DL> |
| |
| <!-- ============ METHOD DETAIL ========== --> |
| |
| <A NAME="method_detail"><!-- --></A> |
| <TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TD COLSPAN=1><FONT SIZE="+2"> |
| <B>Method Detail</B></FONT></TD> |
| </TR> |
| </TABLE> |
| |
| <A NAME="getCachedClass()"><!-- --></A><H3> |
| getCachedClass</H3> |
| <PRE> |
| java.lang.Class <B>getCachedClass</B>()</PRE> |
| <DL> |
| <DD><DL> |
| <DT><B>Returns:</B><DD>the class object whose methods are cached by this map.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="findMethod(java.lang.String, java.lang.Object[])"><!-- --></A><H3> |
| findMethod</H3> |
| <PRE> |
| public java.lang.reflect.Method <B>findMethod</B>(java.lang.String name, |
| java.lang.Object[] params) |
| throws <A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.AmbiguousException.html">MethodMap.AmbiguousException</A></PRE> |
| <DL> |
| <DD>Find a Method using the methodKey |
| provided. |
| |
| Look in the methodMap for an entry. If found, |
| it'll either be a CACHE_MISS, in which case we |
| simply give up, or it'll be a Method, in which |
| case, we return it. |
| |
| If nothing is found, then we must actually go |
| and introspect the method from the MethodMap.</DL> |
| <HR> |
| |
| <A NAME="populateMethodCache()"><!-- --></A><H3> |
| populateMethodCache</H3> |
| <PRE> |
| private void <B>populateMethodCache</B>()</PRE> |
| <DL> |
| <DD>Populate the Map of direct hits. These |
| are taken from all the public methods |
| that our class provides.</DL> |
| <HR> |
| |
| <A NAME="makeMethodKey(java.lang.reflect.Method)"><!-- --></A><H3> |
| makeMethodKey</H3> |
| <PRE> |
| private java.lang.String <B>makeMethodKey</B>(java.lang.reflect.Method method)</PRE> |
| <DL> |
| <DD>Make a methodKey for the given method using |
| the concatenation of the name and the |
| types of the method parameters.</DL> |
| <HR> |
| |
| <A NAME="makeMethodKey(java.lang.String, java.lang.Object[])"><!-- --></A><H3> |
| makeMethodKey</H3> |
| <PRE> |
| private static java.lang.String <B>makeMethodKey</B>(java.lang.String method, |
| java.lang.Object[] params)</PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="getAccessibleMethods(java.lang.Class)"><!-- --></A><H3> |
| getAccessibleMethods</H3> |
| <PRE> |
| private static java.lang.reflect.Method[] <B>getAccessibleMethods</B>(java.lang.Class clazz)</PRE> |
| <DL> |
| <DD>Retrieves public methods for a class. In case the class is not |
| public, retrieves methods with same signature as its public methods |
| from public superclasses and interfaces (if they exist). Basically |
| upcasts every method to the nearest acccessible method.</DL> |
| <HR> |
| |
| <A NAME="getAccessibleMethods(java.lang.Class, org.apache.velocity.util.introspection.ClassMap.MethodInfo[], int)"><!-- --></A><H3> |
| getAccessibleMethods</H3> |
| <PRE> |
| private static int <B>getAccessibleMethods</B>(java.lang.Class clazz, |
| <A HREF="../../../../../org/apache/velocity/util/introspection/ClassMap.MethodInfo.html">ClassMap.MethodInfo</A>[] methodInfos, |
| int upcastCount)</PRE> |
| <DL> |
| <DD>Recursively finds a match for each method, starting with the class, and then |
| searching the superclass and interfaces.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>clazz</CODE> - Class to check<DD><CODE>methodInfos</CODE> - array of methods we are searching to match<DD><CODE>upcastCount</CODE> - current number of methods we have matched<DT><B>Returns:</B><DD>count of matched methods</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getPublicMethod(java.lang.reflect.Method)"><!-- --></A><H3> |
| getPublicMethod</H3> |
| <PRE> |
| public static java.lang.reflect.Method <B>getPublicMethod</B>(java.lang.reflect.Method method)</PRE> |
| <DL> |
| <DD>For a given method, retrieves its publicly accessible counterpart. |
| This method will look for a method with same name |
| and signature declared in a public superclass or implemented interface of this |
| method's declaring class. This counterpart method is publicly callable.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>method</CODE> - a method whose publicly callable counterpart is requested.<DT><B>Returns:</B><DD>the publicly callable counterpart method. Note that if the parameter |
| method is itself declared by a public class, this method is an identity |
| function.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getPublicMethod(java.lang.Class, java.lang.String, java.lang.Class[])"><!-- --></A><H3> |
| getPublicMethod</H3> |
| <PRE> |
| private static java.lang.reflect.Method <B>getPublicMethod</B>(java.lang.Class clazz, |
| java.lang.String name, |
| java.lang.Class[] paramTypes)</PRE> |
| <DL> |
| <DD>Looks up the method with specified name and signature in the first public |
| superclass or implemented interface of the class.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>class</CODE> - the class whose method is sought<DD><CODE>name</CODE> - the name of the method<DD><CODE>paramTypes</CODE> - the classes of method parameters</DL> |
| </DD> |
| </DL> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <HR> |
| |
| <!-- ========== START OF NAVBAR ========== --> |
| <A NAME="navbar_bottom"><!-- --></A> |
| <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"> |
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| <A NAME="navbar_bottom_firstrow"><!-- --></A> |
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