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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 16:42:23 BST 2004 --><TITLE>JDBCXYDataset (JFreeChart Class Library (version 0.9.20))</TITLE><META NAME="keywords" CONTENT="org.jfree.data.JDBCXYDataset class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="JDBCXYDataset (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"> <A HREF="../../../org/jfree/data/JDBCPieDataset.html" title="class in org.jfree.data"><B>PREV CLASS</B></A> <A HREF="../../../org/jfree/data/KeyedObject.html" title="class in org.jfree.data"><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="JDBCXYDataset.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.data</FONT><BR>Class JDBCXYDataset</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../org/jfree/data/AbstractDataset.html" title="class in org.jfree.data">org.jfree.data.AbstractDataset</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../org/jfree/data/AbstractSeriesDataset.html" title="class in org.jfree.data">org.jfree.data.AbstractSeriesDataset</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../org/jfree/data/AbstractXYDataset.html" title="class in org.jfree.data">org.jfree.data.AbstractXYDataset</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>org.jfree.data.JDBCXYDataset</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable, <A HREF="../../../org/jfree/data/Dataset.html" title="interface in org.jfree.data">Dataset</A>, java.util.EventListener, java.io.ObjectInputValidation, <A HREF="../../../org/jfree/data/RangeInfo.html" title="interface in org.jfree.data">RangeInfo</A>, java.io.Serializable, <A HREF="../../../org/jfree/data/SeriesChangeListener.html" title="interface in org.jfree.data">SeriesChangeListener</A>, <A HREF="../../../org/jfree/data/SeriesDataset.html" title="interface in org.jfree.data">SeriesDataset</A>, <A HREF="../../../org/jfree/data/TableXYDataset.html" title="interface in org.jfree.data">TableXYDataset</A>, <A HREF="../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data">XYDataset</A></DD></DL><HR><DL><DT>public class <B>JDBCXYDataset</B><DT>extends <A HREF="../../../org/jfree/data/AbstractXYDataset.html" title="class in org.jfree.data">AbstractXYDataset</A><DT>implements <A HREF="../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data">XYDataset</A>, <A HREF="../../../org/jfree/data/TableXYDataset.html" title="interface in org.jfree.data">TableXYDataset</A>, <A HREF="../../../org/jfree/data/RangeInfo.html" title="interface in org.jfree.data">RangeInfo</A></DL><P>This class provides an <A HREF="../../../org/jfree/data/XYDataset.html" title="interface in org.jfree.data"><CODE>XYDataset</CODE></A> implementation over a database JDBC result set. The dataset is populated via a call to executeQuery with the string sql query. The sql query must return at least two columns. The first column will be the x-axis and remaining columns y-axis values. executeQuery can be called a number of times. The database connection is read-only and no write back facility exists.<P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../serialized-form.html#org.jfree.data.JDBCXYDataset">Serialized Form</A></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/data/JDBCXYDataset.html#JDBCXYDataset(java.sql.Connection)">JDBCXYDataset</A></B>(java.sql.Connection con)</CODE><BR> Creates a new dataset (initially empty) using the specified database connection.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#JDBCXYDataset(java.sql.Connection, java.lang.String)">JDBCXYDataset</A></B>(java.sql.Connection con, java.lang.String query)</CODE><BR> Creates a new dataset using the specified database connection, and populates it using data obtained with the supplied query.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#JDBCXYDataset(java.lang.String, java.lang.String, java.lang.String, java.lang.String)">JDBCXYDataset</A></B>(java.lang.String url, java.lang.String driverName, java.lang.String user, java.lang.String password)</CODE><BR> Creates a new dataset (initially empty) and establishes a new database connection.</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/data/JDBCXYDataset.html#close()">close</A></B>()</CODE><BR> Close the database connection</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/data/JDBCXYDataset.html#executeQuery(java.sql.Connection, java.lang.String)">executeQuery</A></B>(java.sql.Connection con, java.lang.String query)</CODE><BR> ExecuteQuery will attempt execute the query passed to it against the provided database connection.</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/data/JDBCXYDataset.html#executeQuery(java.lang.String)">executeQuery</A></B>(java.lang.String query)</CODE><BR> ExecuteQuery will attempt execute the query passed to it against the existing database connection.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getItemCount()">getItemCount</A></B>()</CODE><BR> Returns the number of items in all series.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getItemCount(int)">getItemCount</A></B>(int seriesIndex)</CODE><BR> Returns the number of items in the specified series.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getLegendItemCount()">getLegendItemCount</A></B>()</CODE><BR> Returns the number of items that should be displayed in the legend.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getLegendItemLabels()">getLegendItemLabels</A></B>()</CODE><BR> Returns the legend item labels.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Number</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getMaximumRangeValue()">getMaximumRangeValue</A></B>()</CODE><BR> Returns the maximum data value in the dataset's range.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Number</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getMinimumRangeValue()">getMinimumRangeValue</A></B>()</CODE><BR> Returns the minimum data value in the dataset's range.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getSeriesCount()">getSeriesCount</A></B>()</CODE><BR> Returns the number of series in the dataset.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getSeriesName(int)">getSeriesName</A></B>(int seriesIndex)</CODE><BR> Returns the name of the specified series.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../org/jfree/data/Range.html" title="class in org.jfree.data">Range</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../org/jfree/data/JDBCXYDataset.html#getValueRange()">getValueRange</A></B>()</CODE>⌨️ 快捷键说明
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