jdbcpiedataset.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

</TABLE>
&nbsp;<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>finalize, getClass, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_org.jfree.data.Dataset"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface org.jfree.data.<A HREF="../../../org/jfree/data/Dataset.html" title="interface in org.jfree.data">Dataset</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/jfree/data/Dataset.html#addChangeListener(org.jfree.data.DatasetChangeListener)">addChangeListener</A>, <A HREF="../../../org/jfree/data/Dataset.html#getGroup()">getGroup</A>, <A HREF="../../../org/jfree/data/Dataset.html#removeChangeListener(org.jfree.data.DatasetChangeListener)">removeChangeListener</A>, <A HREF="../../../org/jfree/data/Dataset.html#setGroup(org.jfree.data.DatasetGroup)">setGroup</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<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="JDBCPieDataset(java.lang.String, java.lang.String, java.lang.String, java.lang.String)"><!-- --></A><H3>
JDBCPieDataset</H3>
<PRE>
public <B>JDBCPieDataset</B>(java.lang.String&nbsp;url,
                      java.lang.String&nbsp;driverName,
                      java.lang.String&nbsp;user,
                      java.lang.String&nbsp;password)
               throws java.sql.SQLException,
                      java.lang.ClassNotFoundException</PRE>
<DL>
<DD>Creates a new JDBCPieDataset and establishes a new database connection.
<P>
<DT><B>Parameters:</B><DD><CODE>url</CODE> - the URL of the database connection.<DD><CODE>driverName</CODE> - the database driver class name.<DD><CODE>user</CODE> - the database user.<DD><CODE>password</CODE> - the database users password.
<DT><B>Throws:</B>
<DD><CODE>java.lang.ClassNotFoundException</CODE> - if the driver cannot be found.
<DD><CODE>java.sql.SQLException</CODE> - if there is a problem obtaining a database connection.</DL>
<HR>

<A NAME="JDBCPieDataset(java.sql.Connection)"><!-- --></A><H3>
JDBCPieDataset</H3>
<PRE>
public <B>JDBCPieDataset</B>(java.sql.Connection&nbsp;con)</PRE>
<DL>
<DD>Creates a new JDBCPieDataset using a pre-existing database connection.
 <P>
 The dataset is initially empty, since no query has been supplied yet.
<P>
<DT><B>Parameters:</B><DD><CODE>con</CODE> - the database connection.</DL>
<HR>

<A NAME="JDBCPieDataset(java.sql.Connection, java.lang.String)"><!-- --></A><H3>
JDBCPieDataset</H3>
<PRE>
public <B>JDBCPieDataset</B>(java.sql.Connection&nbsp;con,
                      java.lang.String&nbsp;query)
               throws java.sql.SQLException</PRE>
<DL>
<DD>Creates a new JDBCPieDataset using a pre-existing database connection.
 <P>
 The dataset is initialised with the supplied query.
<P>
<DT><B>Parameters:</B><DD><CODE>con</CODE> - the database connection.<DD><CODE>query</CODE> - the database connection.
<DT><B>Throws:</B>
<DD><CODE>java.sql.SQLException</CODE> - if there is a problem executing the query.</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="executeQuery(java.lang.String)"><!-- --></A><H3>
executeQuery</H3>
<PRE>
public void <B>executeQuery</B>(java.lang.String&nbsp;query)
                  throws java.sql.SQLException</PRE>
<DL>
<DD>ExecuteQuery will attempt execute the query passed to it against the
  existing database connection.  If no connection exists then no action
  is taken.
  The results from the query are extracted and cached locally, thus
  applying an upper limit on how many rows can be retrieved successfully.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - the query to be executed.
<DT><B>Throws:</B>
<DD><CODE>java.sql.SQLException</CODE> - if there is a problem executing the query.</DL>
</DD>
</DL>
<HR>

<A NAME="executeQuery(java.sql.Connection, java.lang.String)"><!-- --></A><H3>
executeQuery</H3>
<PRE>
public void <B>executeQuery</B>(java.sql.Connection&nbsp;con,
                         java.lang.String&nbsp;query)
                  throws java.sql.SQLException</PRE>
<DL>
<DD>ExecuteQuery will attempt execute the query passed to it against the
  existing database connection.  If no connection exists then no action
  is taken.
  The results from the query are extracted and cached locally, thus
  applying an upper limit on how many rows can be retrieved successfully.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - the query to be executed<DD><CODE>con</CODE> - the connection the query is to be executed against
<DT><B>Throws:</B>
<DD><CODE>java.sql.SQLException</CODE> - if there is a problem executing the query.</DL>
</DD>
</DL>
<HR>

<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD>Close the database connection
<P>
<DD><DL>
</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 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
  </TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>

<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
&nbsp;<A HREF="../../../org/jfree/data/JDBCCategoryDataset.html" title="class in org.jfree.data"><B>PREV CLASS</B></A>&nbsp;
&nbsp;<A HREF="../../../org/jfree/data/JDBCXYDataset.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>  &nbsp;
&nbsp;<A HREF="JDBCPieDataset.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;
&nbsp;<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:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_bottom"></A>
<!-- ======== END OF BOTTOM NAVBAR ======= -->

<HR>

</BODY>
</HTML>