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Id.Distance (Rice Pastry - API Specifications)
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Rice Pastry API</EM>
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<A HREF="../../rice/pastry/Id.html" title="class in rice.pastry"><B>PREV CLASS</B></A>
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<A HREF="../../rice/pastry/IdRange.html" title="class in rice.pastry"><B>NEXT CLASS</B></A></FONT></TD>
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SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD>
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rice.pastry</FONT>
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<BR>
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Class Id.Distance</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.pastry.Id.Distance</B>
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</PRE>
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<DL>
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<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, java.lang.Comparable<<A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A>>, <A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A></DD>
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</DL>
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<DL>
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<DT><B>Enclosing class:</B><DD><A HREF="../../rice/pastry/Id.html" title="class in rice.pastry">Id</A></DD>
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</DL>
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<HR>
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<DL>
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<DT><PRE>public static class <B>Id.Distance</B><DT>extends java.lang.Object<DT>implements <A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A></DL>
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</PRE>
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<P>
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A class for representing and manipulating the distance between two Ids on the circle.
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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: Id.java 4654 2009-01-08 16:33:07Z jeffh $</DD>
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<DT><B>Author:</B></DT>
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<DD>amislove</DD>
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<DT><B>See Also:</B><DD><A HREF="../../serialized-form.html#rice.pastry.Id.Distance">Serialized Form</A></DL>
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<HR>
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<P>
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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/pastry/Id.Distance.html#Id.Distance()">Id.Distance</A></B>()</CODE>
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<BR>
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Constructor.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#Id.Distance(byte[])">Id.Distance</A></B>(byte[] diff)</CODE>
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<BR>
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Constructor.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#Id.Distance(int[])">Id.Distance</A></B>(int[] diff)</CODE>
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<BR>
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Constructor.</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> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#blit(byte[])">blit</A></B>(byte[] target)</CODE>
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<BR>
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Blits the distance into a target array.</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/pastry/Id.Distance.html#blit(byte[], int)">blit</A></B>(byte[] target,
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int offset)</CODE>
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<BR>
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Blits the distance into a target array, starting at the given offset.</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> int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#compareTo(rice.p2p.commonapi.Id.Distance)">compareTo</A></B>(<A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A> obj)</CODE>
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<BR>
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Comparison operator.</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> byte[]</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#copy()">copy</A></B>()</CODE>
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<BR>
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Copy the distance into a freshly generated array.</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> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object obj)</CODE>
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<BR>
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Equality operator.</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> int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#hashCode()">hashCode</A></B>()</CODE>
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<BR>
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Hash codes.</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/pastry/Id.Distance.html" title="class in rice.pastry">Id.Distance</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#shift(int, int)">shift</A></B>(int cnt,
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int fill)</CODE>
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<BR>
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Shift operator.</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/pastry/Id.Distance.html" title="class in rice.pastry">Id.Distance</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#shift(int, int, boolean)">shift</A></B>(int cnt,
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int fill,
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boolean roundUp)</CODE>
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<BR>
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Shift operator.</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/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#shiftDistance(int, int)">shiftDistance</A></B>(int cnt,
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int fill)</CODE>
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<BR>
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Shift operator.</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> java.lang.String</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../rice/pastry/Id.Distance.html#toString()">toString</A></B>()</CODE>
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<BR>
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Returns a string representation of the distance The string is a byte string from most to
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least significant.</TD>
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</TR>
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</TABLE>
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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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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
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</TR>
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</TABLE>
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<P>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="constructor_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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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Constructor Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="Id.Distance()"><!-- --></A><H3>
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Id.Distance</H3>
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<PRE>
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public <B>Id.Distance</B>()</PRE>
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<DL>
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<DD>Constructor.
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<P>
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</DL>
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<HR>
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<A NAME="Id.Distance(byte[])"><!-- --></A><H3>
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Id.Distance</H3>
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<PRE>
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public <B>Id.Distance</B>(byte[] diff)</PRE>
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<DL>
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<DD>Constructor.
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<P>
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<DL>
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<DT><B>Parameters:</B><DD><CODE>diff</CODE> - The different, as a byte array</DL>
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</DL>
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<HR>
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<A NAME="Id.Distance(int[])"><!-- --></A><H3>
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Id.Distance</H3>
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<PRE>
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public <B>Id.Distance</B>(int[] diff)</PRE>
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<DL>
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<DD>Constructor.
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<P>
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<DL>
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<DT><B>Parameters:</B><DD><CODE>diff</CODE> - The difference, as an int array</DL>
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</DL>
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<!-- ============ METHOD DETAIL ========== -->
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<A NAME="method_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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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Method Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="blit(byte[])"><!-- --></A><H3>
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blit</H3>
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<PRE>
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public void <B>blit</B>(byte[] target)</PRE>
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<DL>
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<DD>Blits the distance into a target array.
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<P>
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<DD><DL>
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</DL>
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</DD>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>target</CODE> - an array of length at least IdBitLength/8 for the distance to be stored in.</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="blit(byte[], int)"><!-- --></A><H3>
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blit</H3>
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<PRE>
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public void <B>blit</B>(byte[] target,
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int offset)</PRE>
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<DL>
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<DD>Blits the distance into a target array, starting at the given offset.
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<P>
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<DD><DL>
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</DL>
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</DD>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>offset</CODE> - The offset to start at<DD><CODE>target</CODE> - an array of length at least IdBitLength/8 for the distance to be stored in.</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="copy()"><!-- --></A><H3>
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copy</H3>
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<PRE>
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public byte[] <B>copy</B>()</PRE>
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<DL>
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<DD>Copy the distance into a freshly generated array.
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<P>
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<DD><DL>
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</DL>
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</DD>
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<DD><DL>
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<DT><B>Returns:</B><DD>a fresh copy of the distance material</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="compareTo(rice.p2p.commonapi.Id.Distance)"><!-- --></A><H3>
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compareTo</H3>
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<PRE>
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public int <B>compareTo</B>(<A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A> obj)</PRE>
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<DL>
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<DD>Comparison operator. The comparison that occurs is an absolute magnitude comparison.
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<P>
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<DD><DL>
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<DT><B>Specified by:</B><DD><CODE>compareTo</CODE> in interface <CODE>java.lang.Comparable<<A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A>></CODE></DL>
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</DD>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>obj</CODE> - the Distance to compare with.
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<DT><B>Returns:</B><DD>negative if this < obj, 0 if they are equal and positive if this > obj.</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
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equals</H3>
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<PRE>
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public boolean <B>equals</B>(java.lang.Object obj)</PRE>
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<DL>
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<DD>Equality operator.
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<P>
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<DD><DL>
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<DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL>
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</DD>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>obj</CODE> - another Distance.
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<DT><B>Returns:</B><DD>true if they are the same, false otherwise.</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="shift(int, int)"><!-- --></A><H3>
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shift</H3>
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<PRE>
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public <A HREF="../../rice/pastry/Id.Distance.html" title="class in rice.pastry">Id.Distance</A> <B>shift</B>(int cnt,
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int fill)</PRE>
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<DL>
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<DD>Shift operator. shift(-1,0) multiplies value of this by two, shift(1,0) divides by 2
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<P>
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<DD><DL>
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</DL>
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</DD>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>cnt</CODE> - the number of bits to shift, negative shifts left, positive shifts right<DD><CODE>fill</CODE> - value of bit shifted in (0 if fill == 0, 1 otherwise)
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<DT><B>Returns:</B><DD>this</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="shift(int, int, boolean)"><!-- --></A><H3>
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shift</H3>
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<PRE>
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public <A HREF="../../rice/pastry/Id.Distance.html" title="class in rice.pastry">Id.Distance</A> <B>shift</B>(int cnt,
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int fill,
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boolean roundUp)</PRE>
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<DL>
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<DD>Shift operator. shift(-1,0) multiplies value of this by two, shift(1,0) divides by 2
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<P>
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<DD><DL>
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</DL>
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</DD>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>cnt</CODE> - the number of bits to shift, negative shifts left, positive shifts right<DD><CODE>fill</CODE> - value of bit shifted in (0 if fill == 0, 1 otherwise)<DD><CODE>roundUp</CODE> - if true, round up the results after right shifting
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<DT><B>Returns:</B><DD>this</DL>
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</DD>
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</DL>
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<HR>
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|
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<A NAME="hashCode()"><!-- --></A><H3>
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hashCode</H3>
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<PRE>
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public int <B>hashCode</B>()</PRE>
|
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<DL>
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<DD>Hash codes.
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<P>
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<DD><DL>
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<DT><B>Overrides:</B><DD><CODE>hashCode</CODE> in class <CODE>java.lang.Object</CODE></DL>
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</DD>
|
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<DD><DL>
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<DT><B>Returns:</B><DD>a hash code.</DL>
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</DD>
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</DL>
|
|
<HR>
|
|
|
|
<A NAME="toString()"><!-- --></A><H3>
|
|
toString</H3>
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<PRE>
|
|
public java.lang.String <B>toString</B>()</PRE>
|
|
<DL>
|
|
<DD>Returns a string representation of the distance The string is a byte string from most to
|
|
least significant.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
|
|
</DD>
|
|
<DD><DL>
|
|
|
|
<DT><B>Returns:</B><DD>The string representation of this distance</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="shiftDistance(int, int)"><!-- --></A><H3>
|
|
shiftDistance</H3>
|
|
<PRE>
|
|
public <A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A> <B>shiftDistance</B>(int cnt,
|
|
int fill)</PRE>
|
|
<DL>
|
|
<DD>Shift operator. shift(-1,0) multiplies value of this by two, shift(1,0) divides by 2
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Specified by:</B><DD><CODE><A HREF="../../rice/p2p/commonapi/Id.Distance.html#shiftDistance(int, int)">shiftDistance</A></CODE> in interface <CODE><A HREF="../../rice/p2p/commonapi/Id.Distance.html" title="interface in rice.p2p.commonapi">Id.Distance</A></CODE></DL>
|
|
</DD>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>cnt</CODE> - the number of bits to shift, negative shifts left, positive shifts right<DD><CODE>fill</CODE> - value of bit shifted in (0 if fill == 0, 1 otherwise)
|
|
<DT><B>Returns:</B><DD>this</DL>
|
|
</DD>
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</DL>
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