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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 11:36:39 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>TextfileReaderWriter (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.graph.io.standard.TextfileReaderWriter class"><META NAME="keywords" CONTENT="DELIMITER"><META NAME="keywords" CONTENT="read()"><META NAME="keywords" CONTENT="write()"><META NAME="keywords" CONTENT="writeNode()"><META NAME="keywords" CONTENT="writeEdge()"><META NAME="keywords" CONTENT="readInternal()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="TextfileReaderWriter (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/TextfileReaderWriter.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/io/standard/SerializedReaderWriter.html" title="class in org.geotools.graph.io.standard"><B>PREV CLASS</B></A> NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="TextfileReaderWriter.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">org.geotools.graph.io.standard</FONT><BR>Class TextfileReaderWriter</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html" title="class in org.geotools.graph.io.standard">AbstractReaderWriter</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><B>TextfileReaderWriter</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/geotools/graph/io/standard/FileReaderWriter.html" title="interface in org.geotools.graph.io.standard">FileReaderWriter</A>, <A HREF="../../../../../org/geotools/graph/io/GraphReaderWriter.html" title="interface in org.geotools.graph.io">GraphReaderWriter</A></DD></DL><HR><DL><DT>public abstract class <B>TextfileReaderWriter</B><DT>extends <A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html" title="class in org.geotools.graph.io.standard">AbstractReaderWriter</A><DT>implements <A HREF="../../../../../org/geotools/graph/io/standard/FileReaderWriter.html" title="interface in org.geotools.graph.io.standard">FileReaderWriter</A></DL><P>An implementation of GraphReaderWriter that reads/writes graphs from/to text files. Each line of the text file represents an object to be modelled by the graph. <BR> When performing a read, the text file is read line by line. As each line is read it is tokenized based on the delimiter property, and passed to the template method readInternal(StringTokenizer), which must be implemented by a subclass. The method returns the object that is to be represented in the graph. The returned object is then passed to an underlying GraphGenerator which creates the necessary graph components to modell the object.<BR> <BR> When performing a write, the graph is read component by component based on set properties. If the NODES property is set, nodes will be written. If the EDGES property is set, edges will be written as well. As each component is processed, it is passed to the repspective template methods writeNode(Writer,Node) and writeEdge(Writer,Edge). The methods then write out the text representation of the component.<P><P><DL><DT><B>Author:</B></DT> <DD>Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net</DD><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/io/standard/TextfileReaderWriter.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 <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/io/standard/TextfileReaderWriter.html#DELIMITER">DELIMITER</A></B></CODE><BR> line delimiter key</TD></TR></TABLE> <A NAME="fields_inherited_from_class_AbstractReaderWriter"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class <A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html" title="class in org.geotools.graph.io.standard">AbstractReaderWriter</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html#BUILDER">BUILDER</A>, <A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html#EDGES">EDGES</A>, <A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html#GENERATOR">GENERATOR</A>, <A HREF="../../../../../org/geotools/graph/io/standard/AbstractReaderWriter.html#NODES">NODES</A></CODE></TD></TR></TABLE> <A NAME="fields_inherited_from_class_FileReaderWriter"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface <A HREF="../../../../../org/geotools/graph/io/standard/FileReaderWriter.html" title="interface in org.geotools.graph.io.standard">FileReaderWriter</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../../org/geotools/graph/io/standard/FileReaderWriter.html#FILENAME">FILENAME</A></CODE></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="../../../../../org/geotools/graph/io/standard/TextfileReaderWriter.html#TextfileReaderWriter()">TextfileReaderWriter</A></B>()</CODE><BR> </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="../../../../../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/io/standard/TextfileReaderWriter.html#read()">read</A></B>()</CODE><BR> Performs a read of the text file line by line. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/io/standard/TextfileReaderWriter.html#readInternal(java.util.StringTokenizer)">readInternal</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/StringTokenizer.html" title="class or interface in java.util">StringTokenizer</A> st)</CODE><BR> Template method for returning the object represented by a line in the text file being read.</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/io/standard/TextfileReaderWriter.html#write(org.geotools.graph.structure.Graph)">write</A></B>(<A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A> g)</CODE><BR> Performs a write on the graph out to a text file. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/io/standard/TextfileReaderWriter.html#writeEdge(java.io.Writer, org.geotools.graph.structure.Edge)">writeEdge</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Writer.html" title="class or interface in java.io">Writer</A> out, <A HREF="../../../../../org/geotools/graph/structure/Edge.html" title="interface in org.geotools.graph.structure">Edge</A> e)</CODE><BR> Template method for writing the text representation of an edge to an text file.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/io/standard/TextfileReaderWriter.html#writeNode(java.io.Writer, org.geotools.graph.structure.Node)">writeNode</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Writer.html" title="class or interface in java.io">Writer</A> out, <A HREF="../../../../../org/geotools/graph/structure/Node.html" title="interface in org.geotools.graph.structure">Node</A> n)</CODE><BR> Template method for writing the text representation of a node to ⌨️ 快捷键说明
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