<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--NewPage--> <HTML> <HEAD> <!-- Generated by javadoc (build 1.6.0_07) on Fri Mar 13 20:01:00 CET 2009 --> <TITLE> PastPolicy (Rice Pastry - API Specifications) </TITLE> <META NAME="date" CONTENT="2009-03-13"> <LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"> <SCRIPT type="text/javascript"> function windowTitle() { if (location.href.indexOf('is-external=true') == -1) { parent.document.title="PastPolicy (Rice Pastry - API Specifications)"; } } </SCRIPT> <NOSCRIPT> </NOSCRIPT> </HEAD> <BODY BGCOLOR="white" onload="windowTitle();"> <HR> <!-- ========= START OF TOP NAVBAR ======= --> <A NAME="navbar_top"><!-- --></A> <A HREF="#skip-navbar_top" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_top_firstrow"><!-- --></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/PastPolicy.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> Rice Pastry API</EM> </TD> </TR> <TR> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../rice/p2p/past/PastImpl.PastDeserializer.html" title="class in rice.p2p.past"><B>PREV CLASS</B></A> <A HREF="../../../rice/p2p/past/PastPolicy.DefaultPastPolicy.html" title="class in rice.p2p.past"><B>NEXT CLASS</B></A></FONT></TD> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?rice/p2p/past/PastPolicy.html" target="_top"><B>FRAMES</B></A> <A HREF="PastPolicy.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--> </SCRIPT> <NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> </NOSCRIPT> </FONT></TD> </TR> <TR> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#nested_class_summary">NESTED</A> | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> </TR> </TABLE> <A NAME="skip-navbar_top"></A> <!-- ========= END OF TOP NAVBAR ========= --> <HR> <!-- ======== START OF CLASS DATA ======== --> <H2> <FONT SIZE="-1"> rice.p2p.past</FONT> <BR> Interface PastPolicy</H2> <DL> <DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../rice/p2p/past/PastPolicy.DefaultPastPolicy.html" title="class in rice.p2p.past">PastPolicy.DefaultPastPolicy</A></DD> </DL> <HR> <DL> <DT><PRE>public interface <B>PastPolicy</B></DL> </PRE> <P> <DL> <DT><B>Version:</B></DT> <DD>$Id: PastPolicy.java 4654 2009-01-08 16:33:07Z jeffh $</DD> <DT><B>Author:</B></DT> <DD>Alan Mislove</DD> </DL> <HR> <P> <!-- ======== NESTED CLASS SUMMARY ======== --> <A NAME="nested_class_summary"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> <B>Nested Class Summary</B></FONT></TH> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE>static class</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../rice/p2p/past/PastPolicy.DefaultPastPolicy.html" title="class in rice.p2p.past">PastPolicy.DefaultPastPolicy</A></B></CODE> <BR> The default policy for Past, which fetches any available copy of a replicated object and always allows inserts locally.</TD> </TR> </TABLE> <!-- ========== METHOD SUMMARY =========== --> <A NAME="method_summary"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> <B>Method Summary</B></FONT></TH> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> boolean</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../rice/p2p/past/PastPolicy.html#allowInsert(rice.p2p.past.PastContent)">allowInsert</A></B>(<A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A> content)</CODE> <BR> This method is call before an insert() is processed on the local node.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> void</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../rice/p2p/past/PastPolicy.html#fetch(rice.p2p.commonapi.Id, rice.p2p.commonapi.NodeHandle, rice.persistence.Cache, rice.p2p.past.Past, rice.Continuation)">fetch</A></B>(<A HREF="../../../rice/p2p/commonapi/Id.html" title="interface in rice.p2p.commonapi">Id</A> id, <A HREF="../../../rice/p2p/commonapi/NodeHandle.html" title="class in rice.p2p.commonapi">NodeHandle</A> hint, <A HREF="../../../rice/persistence/Cache.html" title="interface in rice.persistence">Cache</A> backup, <A HREF="../../../rice/p2p/past/Past.html" title="interface in rice.p2p.past">Past</A> past, <A HREF="../../../rice/Continuation.html" title="interface in rice">Continuation</A> command)</CODE> <BR> This method is called when Past is told to fetch a key.</TD> </TR> </TABLE> <P> <!-- ============ 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="fetch(rice.p2p.commonapi.Id, rice.p2p.commonapi.NodeHandle, rice.persistence.Cache, rice.p2p.past.Past, rice.Continuation)"><!-- --></A><H3> fetch</H3> <PRE> void <B>fetch</B>(<A HREF="../../../rice/p2p/commonapi/Id.html" title="interface in rice.p2p.commonapi">Id</A> id, <A HREF="../../../rice/p2p/commonapi/NodeHandle.html" title="class in rice.p2p.commonapi">NodeHandle</A> hint, <A HREF="../../../rice/persistence/Cache.html" title="interface in rice.persistence">Cache</A> backup, <A HREF="../../../rice/p2p/past/Past.html" title="interface in rice.p2p.past">Past</A> past, <A HREF="../../../rice/Continuation.html" title="interface in rice">Continuation</A> command)</PRE> <DL> <DD>This method is called when Past is told to fetch a key. This method allows the application to specify how a replica is fetched and authenticated. The client should fetch the object (possibly using the past instance provided) and then return the object to the provided continuation. The client *MUST* call the continuation at some point in the future, even if the request is lost. <P> <DD><DL> <DT><B>Parameters:</B><DD><CODE>id</CODE> - The id to fetch<DD><CODE>past</CODE> - The local past instance<DD><CODE>backup</CODE> - The backup cache, where the object *might* be located<DD><CODE>command</CODE> - The command to call with the replica to store</DL> </DD> </DL> <HR> <A NAME="allowInsert(rice.p2p.past.PastContent)"><!-- --></A><H3> allowInsert</H3> <PRE> boolean <B>allowInsert</B>(<A HREF="../../../rice/p2p/past/PastContent.html" title="interface in rice.p2p.past">PastContent</A> content)</PRE> <DL> <DD>This method is call before an insert() is processed on the local node. This allows applications to make a decision on whether or not to store the replica. Unless you know what you are doing, don't return anything but 'true' here. <P> <DD><DL> <DT><B>Parameters:</B><DD><CODE>content</CODE> - The content about to be stored <DT><B>Returns:</B><DD>Whether the insert should be allowed</DL> </DD> </DL> <!-- ========= END OF CLASS DATA ========= --> <HR> <!-- ======= START OF BOTTOM NAVBAR ====== --> <A NAME="navbar_bottom"><!-- --></A> <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_bottom_firstrow"><!-- --></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/PastPolicy.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> Rice Pastry API</EM> </TD> </TR> <TR> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../rice/p2p/past/PastImpl.PastDeserializer.html" title="class in rice.p2p.past"><B>PREV CLASS</B></A> <A HREF="../../../rice/p2p/past/PastPolicy.DefaultPastPolicy.html" title="class in rice.p2p.past"><B>NEXT CLASS</B></A></FONT></TD> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?rice/p2p/past/PastPolicy.html" target="_top"><B>FRAMES</B></A> <A HREF="PastPolicy.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--> </SCRIPT> <NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> </NOSCRIPT> </FONT></TD> </TR> <TR> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: <A HREF="#nested_class_summary">NESTED</A> | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> </TR> </TABLE> <A NAME="skip-navbar_bottom"></A> <!-- ======== END OF BOTTOM NAVBAR ======= --> <HR> <i>Copyright © 2001-2005 - Rice Pastry.</i> </BODY> </HTML>