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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><TITLE>Codat (Project JXTA J2SE)</TITLE><META NAME="keywords" CONTENT="net.jxta.codat.Codat class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Codat (Project JXTA J2SE)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= 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=3 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/Codat.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><a href='http://www.jxta.org' target='_blank'>Project JXTA</a></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> PREV CLASS <A HREF="../../../net/jxta/codat/CodatID.html" title="class in net.jxta.codat"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="Codat.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: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <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">net.jxta.codat</FONT><BR>Class Codat</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>net.jxta.codat.Codat</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../net/jxta/codat/Metadata.html" title="class in net.jxta.codat">Metadata</A></DD></DL><HR><DL><DT>public class <B>Codat</B><DT>extends java.lang.Object</DL><P>Codats are container objects that can hold both data or code and are associated with a JXTA ID. The Codat class is offered as a standard way for applications and services to exchange any kind of contents via a common API and associate a unique JXTA id to these contents. <p>Codats are containers objects that are used to hold any kinds of objects or data. A codat can represent a file, a class file, the saved state of an application, a loadable C library. Codats are handled transparently by the JXTA platform, and are used as placeholders for any types of data. Codats hold Document that represent the data that they hold.</p> <p>Codats are published in peer groups. A Codat can belong to only one peer group. Multiple copies of a codat can be made to be published in multiple peer groups.</p> <p>Codats are uniquely identified via a unique CodatID. This Id is guaranteed to be unique within the JXTA world.</p> <p>The core manipulates two main types of codats:</p> <ul type-disc> <li><b>Codat</b> - hold data or code</li> <li><b>Metadata</b> - hold information about another Codat</li> </ul> <p>The JXTA platform defines Codat as the unit of information shared and exchanged within a JXTA group. All instances of Codats reside within a peer group. The PeerGroup content caching service provides storage and retrieval methods for codats using codatId as index.</p><P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../net/jxta/codat/CodatID.html" title="class in net.jxta.codat"><CODE>CodatID</CODE></A>, <A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document"><CODE>Document</CODE></A>, <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document"><CODE>StructuredDocument</CODE></A>, <A HREF="../../../net/jxta/document/StructuredTextDocument.html" title="interface in net.jxta.document"><CODE>StructuredTextDocument</CODE></A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document">Document</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#doc">doc</A></B></CODE><BR> A JXTA Document which contains the data held by this Codat.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#id">id</A></B></CODE><BR> Id of this Codat. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#metaId">metaId</A></B></CODE><BR> Codat Id of a Codat to which this Codat is related. </TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#Codat(net.jxta.codat.CodatID, net.jxta.codat.CodatID, net.jxta.document.Document)">Codat</A></B>(<A HREF="../../../net/jxta/codat/CodatID.html" title="class in net.jxta.codat">CodatID</A> id, <A HREF="../../../net/jxta/codat/CodatID.html" title="class in net.jxta.codat">CodatID</A> about, <A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document">Document</A> document)</CODE><BR> Makes a new Codat instance from an existing Codat, with a given CodatID and a document.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#Codat(net.jxta.peergroup.PeerGroupID, net.jxta.id.ID, net.jxta.document.Document)">Codat</A></B>(<A HREF="../../../net/jxta/peergroup/PeerGroupID.html" title="class in net.jxta.peergroup">PeerGroupID</A> groupID, <A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A> about, <A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document">Document</A> document)</CODE><BR> Makes a new Codat with a new CodatId given a PeerGroupID and a document.</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"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#getCodatID()">getCodatID</A></B>()</CODE><BR> Returns the CodatId associated with this Codat.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document">Document</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/codat/Codat.html#getDocument()">getDocument</A></B>()</CODE>⌨️ 快捷键说明
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