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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_03) on Mon Jun 07 16:42:35 BST 2004 --><TITLE>ChartDeleter (JFreeChart Class Library (version 0.9.20))</TITLE><META NAME="keywords" CONTENT="org.jfree.chart.servlet.ChartDeleter class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="ChartDeleter (JFreeChart Class Library (version 0.9.20))";}</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="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"> PREV CLASS <A HREF="../../../../org/jfree/chart/servlet/DisplayChart.html" title="class in org.jfree.chart.servlet"><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="ChartDeleter.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 | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <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.jfree.chart.servlet</FONT><BR>Class ChartDeleter</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>org.jfree.chart.servlet.ChartDeleter</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.util.EventListener, javax.servlet.http.HttpSessionBindingListener</DD></DL><HR><DL><DT>public class <B>ChartDeleter</B><DT>extends java.lang.Object<DT>implements javax.servlet.http.HttpSessionBindingListener</DL><P>Used for deleting charts from the temporary directory when the users session expires.<P><P><DL><DT><B>Author:</B></DT> <DD>Richard Atkinson</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== 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/jfree/chart/servlet/ChartDeleter.html#ChartDeleter()">ChartDeleter</A></B>()</CODE><BR> Blank constructor.</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> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/servlet/ChartDeleter.html#addChart(java.lang.String)">addChart</A></B>(java.lang.String filename)</CODE><BR> Add a chart to be deleted when the session expires</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/jfree/chart/servlet/ChartDeleter.html#isChartAvailable(java.lang.String)">isChartAvailable</A></B>(java.lang.String filename)</CODE><BR> Checks to see if a chart is in the list of charts to be deleted</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/jfree/chart/servlet/ChartDeleter.html#valueBound(javax.servlet.http.HttpSessionBindingEvent)">valueBound</A></B>(javax.servlet.http.HttpSessionBindingEvent event)</CODE><BR> Binding this object to the session has no additional effects.</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/jfree/chart/servlet/ChartDeleter.html#valueUnbound(javax.servlet.http.HttpSessionBindingEvent)">valueUnbound</A></B>(javax.servlet.http.HttpSessionBindingEvent event)</CODE><BR> When this object is unbound from the session (including upon session expiry) the files that have been added to the ArrayList are iterated and deleted.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="ChartDeleter()"><!-- --></A><H3>ChartDeleter</H3><PRE>public <B>ChartDeleter</B>()</PRE><DL><DD>Blank constructor.<P></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="addChart(java.lang.String)"><!-- --></A><H3>addChart</H3><PRE>public void <B>addChart</B>(java.lang.String filename)</PRE><DL><DD>Add a chart to be deleted when the session expires<P><DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>filename</CODE> - the name of the chart in the temporary directory to be deleted.</DL></DD></DL><HR><A NAME="isChartAvailable(java.lang.String)"><!-- --></A><H3>isChartAvailable</H3><PRE>public boolean <B>isChartAvailable</B>(java.lang.String filename)</PRE><DL><DD>Checks to see if a chart is in the list of charts to be deleted<P><DD><DL></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>filename</CODE> - the name of the chart in the temporary directory.<DT><B>Returns:</B><DD>a boolean value indicating whether the chart is present in the list.</DL></DD></DL><HR><A NAME="valueBound(javax.servlet.http.HttpSessionBindingEvent)"><!-- --></A><H3>valueBound</H3><PRE>public void <B>valueBound</B>(javax.servlet.http.HttpSessionBindingEvent event)</PRE><DL><DD>Binding this object to the session has no additional effects.<P><DD><DL><DT><B>Specified by:</B><DD><CODE>valueBound</CODE> in interface <CODE>javax.servlet.http.HttpSessionBindingListener</CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>event</CODE> - the session bind event.</DL></DD></DL><HR><A NAME="valueUnbound(javax.servlet.http.HttpSessionBindingEvent)"><!-- --></A><H3>valueUnbound</H3><PRE>public void <B>valueUnbound</B>(javax.servlet.http.HttpSessionBindingEvent event)</PRE><DL><DD>When this object is unbound from the session (including upon session expiry) the files that have been added to the ArrayList are iterated and deleted.<P><DD><DL><DT><B>Specified by:</B><DD><CODE>valueUnbound</CODE> in interface <CODE>javax.servlet.http.HttpSessionBindingListener</CODE></DL></DD><DD><DL><DT><B>Parameters:</B><DD><CODE>event</CODE> - the session unbind event.</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=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD 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