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| org.apache.velocity.util.introspection</FONT> |
| <BR> |
| Class MethodMap</H2> |
| <PRE> |
| java.lang.Object |
| | |
| +--<B>org.apache.velocity.util.introspection.MethodMap</B> |
| </PRE> |
| <HR> |
| <DL> |
| <DT>public class <B>MethodMap</B><DT>extends java.lang.Object</DL> |
| |
| <P> |
| <DL> |
| <DT><B>Version: </B><DD>$Id: MethodMap.java,v 1.15.4.1 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:Christoph.Reck@dlr.de">Christoph Reck</a>, <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>, <a href="mailto:szegedia@freemail.hu">Attila Szegedi</a></DD> |
| </DL> |
| <HR> |
| |
| <P> |
| <!-- ======== INNER CLASS SUMMARY ======== --> |
| |
| <A NAME="inner_class_summary"><!-- --></A> |
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| <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>static class</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.AmbiguousException.html">MethodMap.AmbiguousException</A></B></CODE> |
| |
| <BR> |
| simple distinguishable exception, used when |
| we run across ambiguous overloading</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 int</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#INCOMPARABLE">INCOMPARABLE</A></B></CODE> |
| |
| <BR> |
| </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/MethodMap.html#LESS_SPECIFIC">LESS_SPECIFIC</A></B></CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>(package private) java.util.Map</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#methodByNameMap">methodByNameMap</A></B></CODE> |
| |
| <BR> |
| Keep track of all methods with the same name.</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/MethodMap.html#MORE_SPECIFIC">MORE_SPECIFIC</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><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#MethodMap()">MethodMap</A></B>()</CODE> |
| |
| <BR> |
| </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> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#add(java.lang.reflect.Method)">add</A></B>(java.lang.reflect.Method method)</CODE> |
| |
| <BR> |
| Add a method to a list of methods by name.</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/MethodMap.html#find(java.lang.String, java.lang.Object[])">find</A></B>(java.lang.String methodName, |
| java.lang.Object[] args)</CODE> |
| |
| <BR> |
| |
| Find a method.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> java.util.List</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#get(java.lang.String)">get</A></B>(java.lang.String key)</CODE> |
| |
| <BR> |
| Return a list of methods with the same name.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static java.util.LinkedList</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#getApplicables(java.util.List, java.lang.Class[])">getApplicables</A></B>(java.util.List methods, |
| java.lang.Class[] classes)</CODE> |
| |
| <BR> |
| Returns all methods that are applicable to actual argument types.</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/MethodMap.html#getMostSpecific(java.util.List, java.lang.Class[])">getMostSpecific</A></B>(java.util.List methods, |
| java.lang.Class[] classes)</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#isApplicable(java.lang.reflect.Method, java.lang.Class[])">isApplicable</A></B>(java.lang.reflect.Method method, |
| java.lang.Class[] classes)</CODE> |
| |
| <BR> |
| Returns true if the supplied method is applicable to actual |
| argument types.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#isMethodInvocationConvertible(java.lang.Class, java.lang.Class)">isMethodInvocationConvertible</A></B>(java.lang.Class formal, |
| java.lang.Class actual)</CODE> |
| |
| <BR> |
| Determines whether a type represented by a class object is |
| convertible to another type represented by a class object using a |
| method invocation conversion, treating object types of primitive |
| types as if they were primitive types (that is, a Boolean actual |
| parameter type matches boolean primitive formal type).</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>private static boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.html#isStrictMethodInvocationConvertible(java.lang.Class, java.lang.Class)">isStrictMethodInvocationConvertible</A></B>(java.lang.Class formal, |
| java.lang.Class actual)</CODE> |
| |
| <BR> |
| Determines whether a type represented by a class object is |
| convertible to another type represented by a class object using a |
| method invocation conversion, without matching object and primitive |
| types.</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/MethodMap.html#moreSpecific(java.lang.Class[], java.lang.Class[])">moreSpecific</A></B>(java.lang.Class[] c1, |
| java.lang.Class[] c2)</CODE> |
| |
| <BR> |
| Determines which method signature (represented by a class array) is more |
| specific.</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="MORE_SPECIFIC"><!-- --></A><H3> |
| MORE_SPECIFIC</H3> |
| <PRE> |
| private static final int <B>MORE_SPECIFIC</B></PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="LESS_SPECIFIC"><!-- --></A><H3> |
| LESS_SPECIFIC</H3> |
| <PRE> |
| private static final int <B>LESS_SPECIFIC</B></PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="INCOMPARABLE"><!-- --></A><H3> |
| INCOMPARABLE</H3> |
| <PRE> |
| private static final int <B>INCOMPARABLE</B></PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="methodByNameMap"><!-- --></A><H3> |
| methodByNameMap</H3> |
| <PRE> |
| java.util.Map <B>methodByNameMap</B></PRE> |
| <DL> |
| <DD>Keep track of all methods with the same name.</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="MethodMap()"><!-- --></A><H3> |
| MethodMap</H3> |
| <PRE> |
| public <B>MethodMap</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="add(java.lang.reflect.Method)"><!-- --></A><H3> |
| add</H3> |
| <PRE> |
| public void <B>add</B>(java.lang.reflect.Method method)</PRE> |
| <DL> |
| <DD>Add a method to a list of methods by name. |
| For a particular class we are keeping track |
| of all the methods with the same name.</DL> |
| <HR> |
| |
| <A NAME="get(java.lang.String)"><!-- --></A><H3> |
| get</H3> |
| <PRE> |
| public java.util.List <B>get</B>(java.lang.String key)</PRE> |
| <DL> |
| <DD>Return a list of methods with the same name.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>String</CODE> - key<DT><B>Returns:</B><DD>List list of methods</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="find(java.lang.String, java.lang.Object[])"><!-- --></A><H3> |
| find</H3> |
| <PRE> |
| public java.lang.reflect.Method <B>find</B>(java.lang.String methodName, |
| java.lang.Object[] args) |
| throws <A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.AmbiguousException.html">MethodMap.AmbiguousException</A></PRE> |
| <DL> |
| <DD><p> |
| Find a method. Attempts to find the |
| most specific applicable method using the |
| algorithm described in the JLS section |
| 15.12.2 (with the exception that it can't |
| distinguish a primitive type argument from |
| an object type argument, since in reflection |
| primitive type arguments are represented by |
| their object counterparts, so for an argument of |
| type (say) java.lang.Integer, it will not be able |
| to decide between a method that takes int and a |
| method that takes java.lang.Integer as a parameter. |
| </p> |
| |
| <p> |
| This turns out to be a relatively rare case |
| where this is needed - however, functionality |
| like this is needed. |
| </p><DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>methodName</CODE> - name of method<DD><CODE>args</CODE> - the actual arguments with which the method is called<DT><B>Returns:</B><DD>the most specific applicable method, or null if no |
| method is applicable.<DT><B>Throws:</B><DD><CODE><A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.AmbiguousException.html">MethodMap.AmbiguousException</A></CODE> - if there is more than one maximally |
| specific applicable method</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getMostSpecific(java.util.List, java.lang.Class[])"><!-- --></A><H3> |
| getMostSpecific</H3> |
| <PRE> |
| private static java.lang.reflect.Method <B>getMostSpecific</B>(java.util.List methods, |
| java.lang.Class[] classes) |
| throws <A HREF="../../../../../org/apache/velocity/util/introspection/MethodMap.AmbiguousException.html">MethodMap.AmbiguousException</A></PRE> |
| <DL> |
| </DL> |
| <HR> |
| |
| <A NAME="moreSpecific(java.lang.Class[], java.lang.Class[])"><!-- --></A><H3> |
| moreSpecific</H3> |
| <PRE> |
| private static int <B>moreSpecific</B>(java.lang.Class[] c1, |
| java.lang.Class[] c2)</PRE> |
| <DL> |
| <DD>Determines which method signature (represented by a class array) is more |
| specific. This defines a partial ordering on the method signatures.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>c1</CODE> - first signature to compare<DD><CODE>c2</CODE> - second signature to compare<DT><B>Returns:</B><DD>MORE_SPECIFIC if c1 is more specific than c2, LESS_SPECIFIC if |
| c1 is less specific than c2, INCOMPARABLE if they are incomparable.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getApplicables(java.util.List, java.lang.Class[])"><!-- --></A><H3> |
| getApplicables</H3> |
| <PRE> |
| private static java.util.LinkedList <B>getApplicables</B>(java.util.List methods, |
| java.lang.Class[] classes)</PRE> |
| <DL> |
| <DD>Returns all methods that are applicable to actual argument types.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>methods</CODE> - list of all candidate methods<DD><CODE>classes</CODE> - the actual types of the arguments<DT><B>Returns:</B><DD>a list that contains only applicable methods (number of |
| formal and actual arguments matches, and argument types are assignable |
| to formal types through a method invocation conversion).</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="isApplicable(java.lang.reflect.Method, java.lang.Class[])"><!-- --></A><H3> |
| isApplicable</H3> |
| <PRE> |
| private static boolean <B>isApplicable</B>(java.lang.reflect.Method method, |
| java.lang.Class[] classes)</PRE> |
| <DL> |
| <DD>Returns true if the supplied method is applicable to actual |
| argument types.</DL> |
| <HR> |
| |
| <A NAME="isMethodInvocationConvertible(java.lang.Class, java.lang.Class)"><!-- --></A><H3> |
| isMethodInvocationConvertible</H3> |
| <PRE> |
| private static boolean <B>isMethodInvocationConvertible</B>(java.lang.Class formal, |
| java.lang.Class actual)</PRE> |
| <DL> |
| <DD>Determines whether a type represented by a class object is |
| convertible to another type represented by a class object using a |
| method invocation conversion, treating object types of primitive |
| types as if they were primitive types (that is, a Boolean actual |
| parameter type matches boolean primitive formal type). This behavior |
| is because this method is used to determine applicable methods for |
| an actual parameter list, and primitive types are represented by |
| their object duals in reflective method calls.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>formal</CODE> - the formal parameter type to which the actual |
| parameter type should be convertible<DD><CODE>actual</CODE> - the actual parameter type.<DT><B>Returns:</B><DD>true if either formal type is assignable from actual type, |
| or formal is a primitive type and actual is its corresponding object |
| type or an object type of a primitive type that can be converted to |
| the formal type.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="isStrictMethodInvocationConvertible(java.lang.Class, java.lang.Class)"><!-- --></A><H3> |
| isStrictMethodInvocationConvertible</H3> |
| <PRE> |
| private static boolean <B>isStrictMethodInvocationConvertible</B>(java.lang.Class formal, |
| java.lang.Class actual)</PRE> |
| <DL> |
| <DD>Determines whether a type represented by a class object is |
| convertible to another type represented by a class object using a |
| method invocation conversion, without matching object and primitive |
| types. This method is used to determine the more specific type when |
| comparing signatures of methods.<DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>formal</CODE> - the formal parameter type to which the actual |
| parameter type should be convertible<DD><CODE>actual</CODE> - the actual parameter type.<DT><B>Returns:</B><DD>true if either formal type is assignable from actual type, |
| or formal and actual are both primitive types and actual can be |
| subject to widening conversion to formal.</DL> |
| </DD> |
| </DL> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <HR> |
| |
| <!-- ========== START OF NAVBAR ========== --> |
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