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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><!-- Generated by javadoc (build 1.4.2_13) on Tue Jun 05 11:36:40 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>GraphTraversal (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.graph.traverse.GraphTraversal interface"><META NAME="keywords" CONTENT="CONTINUE"><META NAME="keywords" CONTENT="SUSPEND"><META NAME="keywords" CONTENT="KILL_BRANCH"><META NAME="keywords" CONTENT="STOP"><META NAME="keywords" CONTENT="setGraph()"><META NAME="keywords" CONTENT="getGraph()"><META NAME="keywords" CONTENT="setIterator()"><META NAME="keywords" CONTENT="getIterator()"><META NAME="keywords" CONTENT="setWalker()"><META NAME="keywords" CONTENT="getWalker()"><META NAME="keywords" CONTENT="init()"><META NAME="keywords" CONTENT="traverse()"><META NAME="keywords" CONTENT="isVisited()"><META NAME="keywords" CONTENT="setVisited()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="GraphTraversal (Geotools 2.3.x 2.3.2 API)";}</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/GraphTraversal.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></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/geotools/graph/traverse/GraphIterator.html" title="interface in org.geotools.graph.traverse"><B>PREV CLASS</B></A> <A HREF="../../../../org/geotools/graph/traverse/GraphWalker.html" title="interface in org.geotools.graph.traverse"><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="GraphTraversal.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> | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | 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">org.geotools.graph.traverse</FONT><BR>Interface GraphTraversal</H2><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/geotools/graph/traverse/basic/BasicGraphTraversal.html" title="class in org.geotools.graph.traverse.basic">BasicGraphTraversal</A></DD></DL><HR><DL><DT>public interface <B>GraphTraversal</B></DL><P>Iterates a GraphWalker over the components of a Graph. The order in which components are iterated over is determined by the GraphIterator class. The GraphTraversal is the mediator between the GraphWalker and the GraphIterator.<BR> <BR> Upon each visitation, the GraphWalker communicates to the GraphTraversal through a series of return codes, each specifying a different action to perform at that point of the travesal. The following summarizes the meaning of the codes.<BR> <BR> <TABLE border="1" width="60%" style="font-family:Arial;font-size=10pt"> <TH width="20%">Code</TH> <TH width="40%">Action Taken</TH> <TR> <TD align="center">CONTINUE</TD> <TD>The traversal continues as normal.</TD> </TR> <TR> <TD align="center"f>SUSPEND</TD> <TD>Suspends the traversal at some intermediate stage. This code should be returned if the traversal is intended to be resumed.</TD> </TR> <TR> <TD align="center">KILL_BRANCH</TD> <TD>Kills the current branch of the traversal. Depending on the iteration algorithm, returning this code may end the traversal.</TD> </TR> <TR> <TD align="center">STOP</TD> <TD>Stops the traversal.</TD> </TR> </TABLE> <BR> <BR> GraphTraversals are started with a call to traverse(). If the traversal is suspended at some intermediate point, an additional call to traverse() will resume the traversal.<BR> <BR><P><P><DL><DT><B>Author:</B></DT> <DD>Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net</DD><DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/graph/traverse/GraphWalker.html" title="interface in org.geotools.graph.traverse"><CODE>GraphWalker</CODE></A>, <A HREF="../../../../org/geotools/graph/traverse/GraphIterator.html" title="interface in org.geotools.graph.traverse"><CODE>GraphIterator</CODE></A>, <A HREF="../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure"><CODE>Graph</CODE></A><DT><B>Module:</B></DT><DD><CODE><B>ext/graph</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-graph/"><CODE>gt2-graph.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/graph/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/ext/graph/src/org/geotools/graph/traverse/GraphTraversal.java">SVN head</A>)</DD></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>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#CONTINUE">CONTINUE</A></B></CODE><BR> Signals the traversal to continue</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#KILL_BRANCH">KILL_BRANCH</A></B></CODE><BR> Signals the traversal to kill the current branch</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#STOP">STOP</A></B></CODE><BR> Signals the traversal to stop</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#SUSPEND">SUSPEND</A></B></CODE><BR> Signals the traversal to suspend at some intermediate point</TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== 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="../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#getGraph()">getGraph</A></B>()</CODE><BR> Returns the graph being traversed.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/geotools/graph/traverse/GraphIterator.html" title="interface in org.geotools.graph.traverse">GraphIterator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#getIterator()">getIterator</A></B>()</CODE><BR> Returns the iterator that specifies the order in which to visit graph components.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/geotools/graph/traverse/GraphWalker.html" title="interface in org.geotools.graph.traverse">GraphWalker</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/graph/traverse/GraphTraversal.html#getWalker()">getWalker</A></B>()</CODE><BR> Returns the walker (visitor) traversing the graph of the graph.</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="../../../../org/geotools/graph/traverse/GraphTraversal.html#init()">init</A></B>()</CODE><BR> Initializes the traversal.</TD></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="../../../../org/geotools/graph/traverse/GraphTraversal.html#isVisited(org.geotools.graph.structure.Graphable)">isVisited</A></B>(<A HREF="../../../../org/geotools/graph/structure/Graphable.html" title="interface in org.geotools.graph.structure">Graphable</A> g)</CODE><BR> </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="../../../../org/geotools/graph/traverse/GraphTraversal.html#setGraph(org.geotools.graph.structure.Graph)">setGraph</A></B>(<A HREF="../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A> graph)</CODE><BR> Sets the graph being traversed.</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="../../../../org/geotools/graph/traverse/GraphTraversal.html#setIterator(org.geotools.graph.traverse.GraphIterator)">setIterator</A></B>(<A HREF="../../../../org/geotools/graph/traverse/GraphIterator.html" title="interface in org.geotools.graph.traverse">GraphIterator</A> iterator)</CODE><BR> Sets the iterator that specifies the order in which visit graph components.</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="../../../../org/geotools/graph/traverse/GraphTraversal.html#setVisited(org.geotools.graph.structure.Graphable, boolean)">setVisited</A></B>(<A HREF="../../../../org/geotools/graph/structure/Graphable.html" title="interface in org.geotools.graph.structure">Graphable</A> g, boolean visited)</CODE><BR> </TD>⌨️ 快捷键说明
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