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EventHandlerMethodExecutor (Velocity 1.7 API)
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org.apache.velocity.app.event</FONT>
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Interface EventHandlerMethodExecutor</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../../org/apache/velocity/app/event/IncludeEventHandler.IncludeEventExecutor.html" title="class in org.apache.velocity.app.event">IncludeEventHandler.IncludeEventExecutor</A>, <A HREF="../../../../../org/apache/velocity/app/event/InvalidReferenceEventHandler.InvalidGetMethodExecutor.html" title="class in org.apache.velocity.app.event">InvalidReferenceEventHandler.InvalidGetMethodExecutor</A>, <A HREF="../../../../../org/apache/velocity/app/event/InvalidReferenceEventHandler.InvalidMethodExecutor.html" title="class in org.apache.velocity.app.event">InvalidReferenceEventHandler.InvalidMethodExecutor</A>, <A HREF="../../../../../org/apache/velocity/app/event/InvalidReferenceEventHandler.InvalidSetMethodExecutor.html" title="class in org.apache.velocity.app.event">InvalidReferenceEventHandler.InvalidSetMethodExecutor</A>, <A HREF="../../../../../org/apache/velocity/app/event/MethodExceptionEventHandler.MethodExceptionExecutor.html" title="class in org.apache.velocity.app.event">MethodExceptionEventHandler.MethodExceptionExecutor</A>, <A HREF="../../../../../org/apache/velocity/app/event/NullSetEventHandler.ShouldLogOnNullSetExecutor.html" title="class in org.apache.velocity.app.event">NullSetEventHandler.ShouldLogOnNullSetExecutor</A>, <A HREF="../../../../../org/apache/velocity/app/event/ReferenceInsertionEventHandler.referenceInsertExecutor.html" title="class in org.apache.velocity.app.event">ReferenceInsertionEventHandler.referenceInsertExecutor</A></DD>
</DL>
<HR>
<DL>
<DT>public interface <B>EventHandlerMethodExecutor</B></DL>
<P>
Strategy object used to execute event handler method. Will be called
while looping through all the chained event handler implementations.
Each EventHandler method call should have a parallel executor object
defined.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>1.5</DD>
<DT><B>Version:</B></DT>
<DD>$Id: EventHandlerMethodExecutor.java 685685 2008-08-13 21:43:27Z nbubna $</DD>
<DT><B>Author:</B></DT>
<DD><a href="mailto:wglass@forio.com">Will Glass-Husain</a></DD>
</DL>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/velocity/app/event/EventHandlerMethodExecutor.html#execute(org.apache.velocity.app.event.EventHandler)">execute</A></B>(<A HREF="../../../../../org/apache/velocity/app/event/EventHandler.html" title="interface in org.apache.velocity.app.event">EventHandler</A> handler)</CODE>
<BR>
Execute the event handler method.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<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/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/velocity/app/event/EventHandlerMethodExecutor.html#getReturnValue()">getReturnValue</A></B>()</CODE>
<BR>
Get return value at end of all the iterations</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/velocity/app/event/EventHandlerMethodExecutor.html#isDone()">isDone</A></B>()</CODE>
<BR>
Called after execute() to see if iterating should stop.</TD>
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<A NAME="execute(org.apache.velocity.app.event.EventHandler)"><!-- --></A><H3>
execute</H3>
<PRE>
public void <B>execute</B>(<A HREF="../../../../../org/apache/velocity/app/event/EventHandler.html" title="interface in org.apache.velocity.app.event">EventHandler</A> handler)
throws <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Execute the event handler method. If Object is not null, do not
iterate further through the handler chain.
If appropriate, the returned Object will be the return value.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>handler</CODE> - call the appropriate method on this handler
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE> - generic exception potentially thrown by event handlers</DL>
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</DL>
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<A NAME="isDone()"><!-- --></A><H3>
isDone</H3>
<PRE>
public boolean <B>isDone</B>()</PRE>
<DL>
<DD>Called after execute() to see if iterating should stop. Should
always return false before method execute() is run.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>true if no more event handlers for this method should be called.</DL>
</DD>
</DL>
<HR>
<A NAME="getReturnValue()"><!-- --></A><H3>
getReturnValue</H3>
<PRE>
public <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>getReturnValue</B>()</PRE>
<DL>
<DD>Get return value at end of all the iterations
<P>
<DD><DL>
<DT><B>Returns:</B><DD>null if no return value is required</DL>
</DD>
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