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ErasureCodec (Rice Pastry - API Specifications)
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<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
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Rice Pastry API</EM>
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SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD>
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<!-- ======== START OF CLASS DATA ======== -->
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<H2>
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<FONT SIZE="-1">
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rice.p2p.glacier</FONT>
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<BR>
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Class ErasureCodec</H2>
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<PRE>
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java.lang.Object
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<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>rice.p2p.glacier.ErasureCodec</B>
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</PRE>
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<HR>
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<DL>
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<DT><PRE>public class <B>ErasureCodec</B><DT>extends java.lang.Object</DL>
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</PRE>
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<P>
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DESCRIBE THE CLASS
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<P>
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<P>
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<DL>
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<DT><B>Version:</B></DT>
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<DD>$Id: ErasureCodec.java 3613 2007-02-15 14:45:14Z jstewart $</DD>
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<DT><B>Author:</B></DT>
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<DD>ahae</DD>
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</DL>
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<HR>
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<P>
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<!-- =========== FIELD SUMMARY =========== -->
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<A NAME="field_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Field Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected <A HREF="../../../rice/environment/Environment.html" title="class in rice.environment">Environment</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#environment">environment</A></B></CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected <A HREF="../../../rice/environment/logging/Logger.html" title="class in rice.environment.logging">Logger</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#logger">logger</A></B></CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#numFragments">numFragments</A></B></CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#numSurvivors">numSurvivors</A></B></CODE>
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<BR>
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</TD>
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</TR>
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</TABLE>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<A NAME="constructor_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Constructor Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#ErasureCodec(int, int, rice.environment.Environment)">ErasureCodec</A></B>(int _numFragments,
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int _numSurvivors,
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<A HREF="../../../rice/environment/Environment.html" title="class in rice.environment">Environment</A> env)</CODE>
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<BR>
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Constructor for ErasureCodec.</TD>
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</TR>
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</TABLE>
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<!-- ========== METHOD SUMMARY =========== -->
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<A NAME="method_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Method Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#decode(rice.p2p.glacier.Fragment[], rice.p2p.commonapi.Endpoint, rice.p2p.past.rawserialization.PastContentDeserializer)">decode</A></B>(<A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[] frag,
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<A HREF="../../../rice/p2p/commonapi/Endpoint.html" title="interface in rice.p2p.commonapi">Endpoint</A> endpoint,
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<A HREF="../../../rice/p2p/past/rawserialization/PastContentDeserializer.html" title="interface in rice.p2p.past.rawserialization">PastContentDeserializer</A> pcd)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#decodeChunk(int[], int, int[], boolean[], long[][], int[])">decodeChunk</A></B>(int[] buffer,
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int nExtra,
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int[] RowInd,
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boolean[] haveFragment,
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long[][] InvMat,
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int[] ColInd)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected <A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#deserialize(byte[], rice.p2p.commonapi.Endpoint, rice.p2p.past.rawserialization.PastContentDeserializer)">deserialize</A></B>(byte[] bytes,
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<A HREF="../../../rice/p2p/commonapi/Endpoint.html" title="interface in rice.p2p.commonapi">Endpoint</A> endpoint,
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<A HREF="../../../rice/p2p/past/rawserialization/PastContentDeserializer.html" title="interface in rice.p2p.past.rawserialization">PastContentDeserializer</A> pcd)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#dump(byte[])">dump</A></B>(byte[] data)</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[]</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#encode(byte[], int, boolean[])">encode</A></B>(byte[] bytes,
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int length,
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boolean[] generateFragment)</CODE>
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<BR>
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Generates multiple fragments from the incoming bytes</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected void</CODE></FONT></TD>
|
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#encodeChunk(int[])">encodeChunk</A></B>(int[] buffer)</CODE>
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<BR>
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Input: buffer of size <numFragments*Lfield>; first <numSurvivors*Lfield> words contain message, rest is zeroes
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Output: buffer contains fragments</TD>
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</TR>
|
||
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<TR BGCOLOR="white" CLASS="TableRowColor">
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||
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
|
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<CODE> <A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[]</CODE></FONT></TD>
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||
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#encodeObject(rice.p2p.past.PastContent, boolean[])">encodeObject</A></B>(<A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A> obj,
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boolean[] generateFragment)</CODE>
|
||
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<BR>
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</TD>
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||
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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||
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[]</CODE></FONT></TD>
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||
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#encodeObject(rice.p2p.past.rawserialization.RawPastContent, boolean[])">encodeObject</A></B>(<A HREF="../../../rice/p2p/past/rawserialization/RawPastContent.html" title="interface in rice.p2p.past.rawserialization">RawPastContent</A> obj,
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boolean[] generateFragment)</CODE>
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||
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<BR>
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||
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Serializes the object.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../rice/p2p/glacier/ErasureCodec.html#initElt()">initElt</A></B>()</CODE>
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<BR>
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</TD>
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||
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</TR>
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</TABLE>
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||
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<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
||
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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|
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</TR>
|
||
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<TR BGCOLOR="white" CLASS="TableRowColor">
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||
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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||
|
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</TR>
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||
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</TABLE>
|
||
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|
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<P>
|
||
|
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|
||
|
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<!-- ============ FIELD DETAIL =========== -->
|
||
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|
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|
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<A NAME="field_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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||
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Field Detail</B></FONT></TH>
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||
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</TR>
|
||
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</TABLE>
|
||
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<A NAME="numFragments"><!-- --></A><H3>
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||
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|
numFragments</H3>
|
||
|
|
<PRE>
|
||
|
|
protected int <B>numFragments</B></PRE>
|
||
|
|
<DL>
|
||
|
|
<DL>
|
||
|
|
</DL>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="numSurvivors"><!-- --></A><H3>
|
||
|
|
numSurvivors</H3>
|
||
|
|
<PRE>
|
||
|
|
protected int <B>numSurvivors</B></PRE>
|
||
|
|
<DL>
|
||
|
|
<DL>
|
||
|
|
</DL>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="environment"><!-- --></A><H3>
|
||
|
|
environment</H3>
|
||
|
|
<PRE>
|
||
|
|
protected <A HREF="../../../rice/environment/Environment.html" title="class in rice.environment">Environment</A> <B>environment</B></PRE>
|
||
|
|
<DL>
|
||
|
|
<DL>
|
||
|
|
</DL>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="logger"><!-- --></A><H3>
|
||
|
|
logger</H3>
|
||
|
|
<PRE>
|
||
|
|
protected <A HREF="../../../rice/environment/logging/Logger.html" title="class in rice.environment.logging">Logger</A> <B>logger</B></PRE>
|
||
|
|
<DL>
|
||
|
|
<DL>
|
||
|
|
</DL>
|
||
|
|
</DL>
|
||
|
|
|
||
|
|
<!-- ========= CONSTRUCTOR DETAIL ======== -->
|
||
|
|
|
||
|
|
<A NAME="constructor_detail"><!-- --></A>
|
||
|
|
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
||
|
|
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
|
||
|
|
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
|
||
|
|
<B>Constructor Detail</B></FONT></TH>
|
||
|
|
</TR>
|
||
|
|
</TABLE>
|
||
|
|
|
||
|
|
<A NAME="ErasureCodec(int, int, rice.environment.Environment)"><!-- --></A><H3>
|
||
|
|
ErasureCodec</H3>
|
||
|
|
<PRE>
|
||
|
|
public <B>ErasureCodec</B>(int _numFragments,
|
||
|
|
int _numSurvivors,
|
||
|
|
<A HREF="../../../rice/environment/Environment.html" title="class in rice.environment">Environment</A> env)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD>Constructor for ErasureCodec.
|
||
|
|
<P>
|
||
|
|
<DL>
|
||
|
|
<DT><B>Parameters:</B><DD><CODE>_numFragments</CODE> - DESCRIBE THE PARAMETER<DD><CODE>_numSurvivors</CODE> - DESCRIBE THE PARAMETER</DL>
|
||
|
|
</DL>
|
||
|
|
|
||
|
|
<!-- ============ METHOD DETAIL ========== -->
|
||
|
|
|
||
|
|
<A NAME="method_detail"><!-- --></A>
|
||
|
|
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
|
||
|
|
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
|
||
|
|
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
|
||
|
|
<B>Method Detail</B></FONT></TH>
|
||
|
|
</TR>
|
||
|
|
</TABLE>
|
||
|
|
|
||
|
|
<A NAME="dump(byte[])"><!-- --></A><H3>
|
||
|
|
dump</H3>
|
||
|
|
<PRE>
|
||
|
|
public void <B>dump</B>(byte[] data)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD><DL>
|
||
|
|
</DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="encodeObject(rice.p2p.past.PastContent, boolean[])"><!-- --></A><H3>
|
||
|
|
encodeObject</H3>
|
||
|
|
<PRE>
|
||
|
|
public <A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[] <B>encodeObject</B>(<A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A> obj,
|
||
|
|
boolean[] generateFragment)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD><DL>
|
||
|
|
</DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="encodeObject(rice.p2p.past.rawserialization.RawPastContent, boolean[])"><!-- --></A><H3>
|
||
|
|
encodeObject</H3>
|
||
|
|
<PRE>
|
||
|
|
public <A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[] <B>encodeObject</B>(<A HREF="../../../rice/p2p/past/rawserialization/RawPastContent.html" title="interface in rice.p2p.past.rawserialization">RawPastContent</A> obj,
|
||
|
|
boolean[] generateFragment)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD>Serializes the object.
|
||
|
|
<P>
|
||
|
|
<DD><DL>
|
||
|
|
<DT><B>Parameters:</B><DD><CODE>obj</CODE> - <DD><CODE>generateFragment</CODE> -
|
||
|
|
<DT><B>Returns:</B><DD></DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="encodeChunk(int[])"><!-- --></A><H3>
|
||
|
|
encodeChunk</H3>
|
||
|
|
<PRE>
|
||
|
|
protected void <B>encodeChunk</B>(int[] buffer)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD>Input: buffer of size <numFragments*Lfield>; first <numSurvivors*Lfield> words contain message, rest is zeroes
|
||
|
|
Output: buffer contains fragments
|
||
|
|
<P>
|
||
|
|
<DD><DL>
|
||
|
|
</DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="encode(byte[], int, boolean[])"><!-- --></A><H3>
|
||
|
|
encode</H3>
|
||
|
|
<PRE>
|
||
|
|
public <A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[] <B>encode</B>(byte[] bytes,
|
||
|
|
int length,
|
||
|
|
boolean[] generateFragment)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD>Generates multiple fragments from the incoming bytes
|
||
|
|
<P>
|
||
|
|
<DD><DL>
|
||
|
|
<DT><B>Parameters:</B><DD><CODE>bytes</CODE> - <DD><CODE>length</CODE> - <DD><CODE>generateFragment</CODE> -
|
||
|
|
<DT><B>Returns:</B><DD></DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="decodeChunk(int[], int, int[], boolean[], long[][], int[])"><!-- --></A><H3>
|
||
|
|
decodeChunk</H3>
|
||
|
|
<PRE>
|
||
|
|
protected void <B>decodeChunk</B>(int[] buffer,
|
||
|
|
int nExtra,
|
||
|
|
int[] RowInd,
|
||
|
|
boolean[] haveFragment,
|
||
|
|
long[][] InvMat,
|
||
|
|
int[] ColInd)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD><DL>
|
||
|
|
</DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="decode(rice.p2p.glacier.Fragment[], rice.p2p.commonapi.Endpoint, rice.p2p.past.rawserialization.PastContentDeserializer)"><!-- --></A><H3>
|
||
|
|
decode</H3>
|
||
|
|
<PRE>
|
||
|
|
public <A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A> <B>decode</B>(<A HREF="../../../rice/p2p/glacier/Fragment.html" title="class in rice.p2p.glacier">Fragment</A>[] frag,
|
||
|
|
<A HREF="../../../rice/p2p/commonapi/Endpoint.html" title="interface in rice.p2p.commonapi">Endpoint</A> endpoint,
|
||
|
|
<A HREF="../../../rice/p2p/past/rawserialization/PastContentDeserializer.html" title="interface in rice.p2p.past.rawserialization">PastContentDeserializer</A> pcd)</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD><DL>
|
||
|
|
</DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="deserialize(byte[], rice.p2p.commonapi.Endpoint, rice.p2p.past.rawserialization.PastContentDeserializer)"><!-- --></A><H3>
|
||
|
|
deserialize</H3>
|
||
|
|
<PRE>
|
||
|
|
protected <A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A> <B>deserialize</B>(byte[] bytes,
|
||
|
|
<A HREF="../../../rice/p2p/commonapi/Endpoint.html" title="interface in rice.p2p.commonapi">Endpoint</A> endpoint,
|
||
|
|
<A HREF="../../../rice/p2p/past/rawserialization/PastContentDeserializer.html" title="interface in rice.p2p.past.rawserialization">PastContentDeserializer</A> pcd)
|
||
|
|
throws java.io.IOException,
|
||
|
|
java.lang.ClassNotFoundException</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD><DL>
|
||
|
|
|
||
|
|
<DT><B>Throws:</B>
|
||
|
|
<DD><CODE>java.io.IOException</CODE>
|
||
|
|
<DD><CODE>java.lang.ClassNotFoundException</CODE></DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="initElt()"><!-- --></A><H3>
|
||
|
|
initElt</H3>
|
||
|
|
<PRE>
|
||
|
|
protected void <B>initElt</B>()</PRE>
|
||
|
|
<DL>
|
||
|
|
<DD><DL>
|
||
|
|
</DL>
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
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<!-- ========= END OF CLASS DATA ========= -->
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|
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<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
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