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AbstractMessageDecoder (MINA 0.7.4 API)
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org.apache.mina.examples.sumup.codec</FONT>
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Class AbstractMessageDecoder</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/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 "><B>org.apache.mina.examples.sumup.codec.AbstractMessageDecoder</B>
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<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html" title="interface in org.apache.mina.protocol.codec">MessageDecoder</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../../org/apache/mina/examples/sumup/codec/AddMessageDecoder.html" title="class in org.apache.mina.examples.sumup.codec">AddMessageDecoder</A>, <A HREF="../../../../../../org/apache/mina/examples/sumup/codec/ResultMessageDecoder.html" title="class in org.apache.mina.examples.sumup.codec">ResultMessageDecoder</A></DD>
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<DT><PRE>public abstract class <B>AbstractMessageDecoder</B><DT>extends <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><DT>implements <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html" title="interface in org.apache.mina.protocol.codec">MessageDecoder</A></DL>
</PRE>
<P>
A <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html" title="interface in org.apache.mina.protocol.codec"><CODE>MessageDecoder</CODE></A> that decodes message header and forwards
the decoding of body to a subclass.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Rev: 264677 $, $Date: 2005-08-30 11:44:35 +0900 $</DD>
<DT><B>Author:</B></DT>
<DD>The Apache Directory Project</DD>
</DL>
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<TH ALIGN="left"><B>Fields inherited from interface org.apache.mina.protocol.codec.<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html" title="interface in org.apache.mina.protocol.codec">MessageDecoder</A></B></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NEED_DATA">NEED_DATA</A>, <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NOT_OK">NOT_OK</A>, <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#OK">OK</A></CODE></TD>
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<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/mina/examples/sumup/codec/AbstractMessageDecoder.html#AbstractMessageDecoder(int)">AbstractMessageDecoder</A></B>(int&nbsp;type)</CODE>
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<CODE>&nbsp;<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoderResult.html" title="class in org.apache.mina.protocol.codec">MessageDecoderResult</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/mina/examples/sumup/codec/AbstractMessageDecoder.html#decodable(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer)">decodable</A></B>(<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/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;in)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks the specified buffer is decodable by this decoder.</TD>
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<CODE>&nbsp;<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoderResult.html" title="class in org.apache.mina.protocol.codec">MessageDecoderResult</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/mina/examples/sumup/codec/AbstractMessageDecoder.html#decode(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer, org.apache.mina.protocol.ProtocolDecoderOutput)">decode</A></B>(<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/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;in,
<A HREF="../../../../../../org/apache/mina/protocol/ProtocolDecoderOutput.html" title="interface in org.apache.mina.protocol">ProtocolDecoderOutput</A>&nbsp;out)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Decodes binary or protocol-specific content into higher-level message objects.</TD>
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<CODE>protected abstract &nbsp;<A HREF="../../../../../../org/apache/mina/examples/sumup/message/AbstractMessage.html" title="class in org.apache.mina.examples.sumup.message">AbstractMessage</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/mina/examples/sumup/codec/AbstractMessageDecoder.html#decodeBody(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer)">decodeBody</A></B>(<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/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;in)</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<A NAME="AbstractMessageDecoder(int)"><!-- --></A><H3>
AbstractMessageDecoder</H3>
<PRE>
protected <B>AbstractMessageDecoder</B>(int&nbsp;type)</PRE>
<DL>
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<A NAME="decodable(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer)"><!-- --></A><H3>
decodable</H3>
<PRE>
public <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoderResult.html" title="class in org.apache.mina.protocol.codec">MessageDecoderResult</A> <B>decodable</B>(<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/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;in)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#decodable(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer)">MessageDecoder</A></CODE></B></DD>
<DD>Checks the specified buffer is decodable by this decoder.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#decodable(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer)">decodable</A></CODE> in interface <CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html" title="interface in org.apache.mina.protocol.codec">MessageDecoder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#OK"><CODE>MessageDecoder.OK</CODE></A> if this decoder can decode the specified buffer.
<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NOT_OK"><CODE>MessageDecoder.NOT_OK</CODE></A> if this decoder cannot decode the specified buffer.
<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NEED_DATA"><CODE>MessageDecoder.NEED_DATA</CODE></A> if more data is required to determine if the
specified buffer is decodable (<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#OK"><CODE>MessageDecoder.OK</CODE></A>) or not decodable
<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NOT_OK"><CODE>MessageDecoder.NOT_OK</CODE></A>.</DL>
</DD>
</DL>
<HR>
<A NAME="decode(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer, org.apache.mina.protocol.ProtocolDecoderOutput)"><!-- --></A><H3>
decode</H3>
<PRE>
public <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoderResult.html" title="class in org.apache.mina.protocol.codec">MessageDecoderResult</A> <B>decode</B>(<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/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;in,
<A HREF="../../../../../../org/apache/mina/protocol/ProtocolDecoderOutput.html" title="interface in org.apache.mina.protocol">ProtocolDecoderOutput</A>&nbsp;out)
throws <A HREF="../../../../../../org/apache/mina/protocol/ProtocolViolationException.html" title="class in org.apache.mina.protocol">ProtocolViolationException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#decode(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer, org.apache.mina.protocol.ProtocolDecoderOutput)">MessageDecoder</A></CODE></B></DD>
<DD>Decodes binary or protocol-specific content into higher-level message objects.
MINA invokes <A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#decode(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer, org.apache.mina.protocol.ProtocolDecoderOutput)"><CODE>MessageDecoder.decode(ProtocolSession, ByteBuffer, ProtocolDecoderOutput)</CODE></A>
method with read data, and then the decoder implementation puts decoded
messages into <A HREF="../../../../../../org/apache/mina/protocol/ProtocolDecoderOutput.html" title="interface in org.apache.mina.protocol"><CODE>ProtocolDecoderOutput</CODE></A>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#decode(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer, org.apache.mina.protocol.ProtocolDecoderOutput)">decode</A></CODE> in interface <CODE><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html" title="interface in org.apache.mina.protocol.codec">MessageDecoder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#OK"><CODE>MessageDecoder.OK</CODE></A> if you finished decoding messages successfully.
<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NEED_DATA"><CODE>MessageDecoder.NEED_DATA</CODE></A> if you need more data to finish decoding current message.
<A HREF="../../../../../../org/apache/mina/protocol/codec/MessageDecoder.html#NOT_OK"><CODE>MessageDecoder.NOT_OK</CODE></A> if you cannot decode current message due to protocol specification violation.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../../org/apache/mina/protocol/ProtocolViolationException.html" title="class in org.apache.mina.protocol">ProtocolViolationException</A></CODE> - if the read data violated protocol
specification</DL>
</DD>
</DL>
<HR>
<A NAME="decodeBody(org.apache.mina.protocol.ProtocolSession, org.apache.mina.common.ByteBuffer)"><!-- --></A><H3>
decodeBody</H3>
<PRE>
protected abstract <A HREF="../../../../../../org/apache/mina/examples/sumup/message/AbstractMessage.html" title="class in org.apache.mina.examples.sumup.message">AbstractMessage</A> <B>decodeBody</B>(<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/ByteBuffer.html" title="class in org.apache.mina.common">ByteBuffer</A>&nbsp;in)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><tt>null</tt> if the whole body is not read yet</DL>
</DD>
</DL>
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