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ProtocolFilter (MINA 0.7.3 API)
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org.apache.mina.protocol</FONT>
<BR>
Interface ProtocolFilter</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/mina/protocol/ProtocolFilterAdapter.html" title="class in org.apache.mina.protocol">ProtocolFilterAdapter</A>, <A HREF="../../../../org/apache/mina/protocol/filter/ProtocolLoggingFilter.html" title="class in org.apache.mina.protocol.filter">ProtocolLoggingFilter</A>, <A HREF="../../../../org/apache/mina/protocol/filter/ProtocolThreadPoolFilter.html" title="class in org.apache.mina.protocol.filter">ProtocolThreadPoolFilter</A></DD>
</DL>
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<DL>
<DT><PRE>public interface <B>ProtocolFilter</B></DL>
</PRE>
<P>
A filter which intercepts <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html" title="interface in org.apache.mina.protocol"><CODE>ProtocolHandler</CODE></A> events like Servlet
filters. Filters can be used for these purposes:
<ul>
<li>Event logging,</li>
<li>Performance measurement,</li>
<li>Authorization,</li>
<li>Overload control,</li>
<li>Message transformation (e.g. encryption and decryption, ...),</li>
<li>and many more.</li>
</ul>
<p>
<strong>Please NEVER implement your filters to wrap
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol"><CODE>ProtocolSession</CODE></A>s.</strong> Users can cache the reference to the
session, which might malfunction if any filters are added or removed later.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Rev: 210062 $, $Date: 2005-07-11 12:52:38 +0900 $</DD>
<DT><B>Author:</B></DT>
<DD>Trustin Lee (trustin@apache.org)</DD>
<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/mina/protocol/ProtocolFilterAdapter.html" title="class in org.apache.mina.protocol"><CODE>ProtocolFilterAdapter</CODE></A></DL>
<HR>
<P>
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<CODE>static&nbsp;interface</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#exceptionCaught(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Throwable)">exceptionCaught</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Throwable.html" title="class or interface in java.lang">Throwable</A>&nbsp;cause)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#exceptionCaught(org.apache.mina.protocol.ProtocolSession, java.lang.Throwable)"><CODE>ProtocolHandler.exceptionCaught(ProtocolSession,Throwable)</CODE></A>
event.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#filterWrite(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Object)">filterWrite</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;message)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html#write(java.lang.Object)"><CODE>ProtocolSession.write(Object)</CODE></A> method invocation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#messageReceived(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Object)">messageReceived</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;message)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#messageReceived(org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><CODE>ProtocolHandler.messageReceived(ProtocolSession,Object)</CODE></A>
event.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#messageSent(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Object)">messageSent</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;message)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#messageSent(org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><CODE>ProtocolHandler.messageSent(ProtocolSession,Object)</CODE></A>
event.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#sessionClosed(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession)">sessionClosed</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#sessionClosed(org.apache.mina.protocol.ProtocolSession)"><CODE>ProtocolHandler.sessionClosed(ProtocolSession)</CODE></A> event.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#sessionIdle(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.IdleStatus)">sessionIdle</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="../../../../org/apache/mina/common/IdleStatus.html" title="class in org.apache.mina.common">IdleStatus</A>&nbsp;status)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#sessionIdle(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.IdleStatus)"><CODE>ProtocolHandler.sessionIdle(ProtocolSession,IdleStatus)</CODE></A>
event.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.html#sessionOpened(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession)">sessionOpened</A></B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#sessionOpened(org.apache.mina.protocol.ProtocolSession)"><CODE>ProtocolHandler.sessionOpened(ProtocolSession)</CODE></A> event.</TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Method Detail</B></FONT></TH>
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<A NAME="sessionOpened(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession)"><!-- --></A><H3>
sessionOpened</H3>
<PRE>
void <B>sessionOpened</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#sessionOpened(org.apache.mina.protocol.ProtocolSession)"><CODE>ProtocolHandler.sessionOpened(ProtocolSession)</CODE></A> event.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="sessionClosed(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession)"><!-- --></A><H3>
sessionClosed</H3>
<PRE>
void <B>sessionClosed</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#sessionClosed(org.apache.mina.protocol.ProtocolSession)"><CODE>ProtocolHandler.sessionClosed(ProtocolSession)</CODE></A> event.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="sessionIdle(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.IdleStatus)"><!-- --></A><H3>
sessionIdle</H3>
<PRE>
void <B>sessionIdle</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="../../../../org/apache/mina/common/IdleStatus.html" title="class in org.apache.mina.common">IdleStatus</A>&nbsp;status)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#sessionIdle(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.IdleStatus)"><CODE>ProtocolHandler.sessionIdle(ProtocolSession,IdleStatus)</CODE></A>
event.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="exceptionCaught(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Throwable)"><!-- --></A><H3>
exceptionCaught</H3>
<PRE>
void <B>exceptionCaught</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Throwable.html" title="class or interface in java.lang">Throwable</A>&nbsp;cause)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#exceptionCaught(org.apache.mina.protocol.ProtocolSession, java.lang.Throwable)"><CODE>ProtocolHandler.exceptionCaught(ProtocolSession,Throwable)</CODE></A>
event.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="messageReceived(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><!-- --></A><H3>
messageReceived</H3>
<PRE>
void <B>messageReceived</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;message)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#messageReceived(org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><CODE>ProtocolHandler.messageReceived(ProtocolSession,Object)</CODE></A>
event.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="messageSent(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><!-- --></A><H3>
messageSent</H3>
<PRE>
void <B>messageSent</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;message)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolHandler.html#messageSent(org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><CODE>ProtocolHandler.messageSent(ProtocolSession,Object)</CODE></A>
event.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="filterWrite(org.apache.mina.protocol.ProtocolFilter.NextFilter, org.apache.mina.protocol.ProtocolSession, java.lang.Object)"><!-- --></A><H3>
filterWrite</H3>
<PRE>
void <B>filterWrite</B>(<A HREF="../../../../org/apache/mina/protocol/ProtocolFilter.NextFilter.html" title="interface in org.apache.mina.protocol">ProtocolFilter.NextFilter</A>&nbsp;nextFilter,
<A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html" title="interface in org.apache.mina.protocol">ProtocolSession</A>&nbsp;session,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;message)
throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></PRE>
<DL>
<DD>Filters <A HREF="../../../../org/apache/mina/protocol/ProtocolSession.html#write(java.lang.Object)"><CODE>ProtocolSession.write(Object)</CODE></A> method invocation.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html" title="class or interface in java.lang">Exception</A></CODE></DL>
</DD>
</DL>
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