164 lines
8.2 KiB
HTML
164 lines
8.2 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Create a procedure with multiple ResultSets" />
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<meta name="abstract" content="This example shows how to access a database and then create a procedure with multiple ResultSets." />
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<meta name="description" content="This example shows how to access a database and then create a procedure with multiple ResultSets." />
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<meta name="DC.Relation" scheme="URI" content="callable.htm" />
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<meta name="DC.Relation" scheme="URI" content="callproc.htm" />
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<meta name="DC.Relation" scheme="URI" content="callexample2.htm" />
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<meta name="DC.Relation" scheme="URI" content="callexample3.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="callexample1" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Create a procedure with multiple ResultSets</title>
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</head>
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<body id="callexample1"><a name="callexample1"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Create a procedure with multiple ResultSets</h1>
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<div><p>This example shows how to access a database and then create a procedure
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with multiple ResultSets.</p>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> Read the <a href="codedisclaimer.htm">Code example disclaimer</a> for
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important legal information.</div>
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<pre>import java.sql.*;
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import java.util.Properties;
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public class CallableStatementExample1 {
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public static void main(java.lang.String[] args) {
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// Register the Native JDBC driver. If we cannot
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// register the driver, the test cannot continue.
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try {
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Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
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// Create the connection properties
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Properties properties = new Properties ();
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properties.put ("user", "userid");
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properties.put ("password", "password");
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// Connect to the local iSeries database
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Connection c = DriverManager.getConnection("jdbc:db2://*local", properties);
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Statement s = c.createStatement();
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// Create a procedure with multiple ResultSets.
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String sql = "CREATE PROCEDURE MYLIBRARY.SQLSPEX1 " +
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"RESULT SET 2 LANGUAGE SQL READS SQL DATA SPECIFIC MYLIBRARY.SQLSPEX1 " +
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"EX1: BEGIN " +
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" DECLARE C1 CURSOR FOR SELECT * FROM QSYS2.SYSPROCS " +
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" WHERE SPECIFIC_SCHEMA = 'MYLIBRARY'; " +
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" DECLARE C2 CURSOR FOR SELECT * FROM QSYS2.SYSPARMS " +
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" WHERE SPECIFIC_SCHEMA = 'MYLIBRARY'; " +
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" OPEN C1; " +
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" OPEN C2; " +
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" SET RESULT SETS CURSOR C1, CURSOR C2; " +
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"END EX1 ";
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try {
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s.executeUpdate(sql);
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} catch (SQLException e) {
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// NOTE: We are ignoring the error here. We are making
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// the assumption that the only reason this fails
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// is because the procedure already exists. Other
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// reasons that it could fail are because the C compiler
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// is not found to compile the procedure or because
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// collection MYLIBRARY does not exist on the system.
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}
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s.close();
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// Now use JDBC to run the procedure and get the results back. In
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// this case we are going to get information about 'MYLIBRARY's stored
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// procedures (which is also where we created this procedure, thereby
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// ensuring that there is something to get.
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CallableStatement cs = c.prepareCall("CALL MYLIBRARY.SQLSPEX1");
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ResultSet rs = cs.executeQuery();
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// We now have the first ResultSet object that the stored procedure
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// left open. Use it.
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int i = 1;
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while (rs.next()) {
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System.out.println("MYLIBRARY stored procedure
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" + i + " is " + rs.getString(1) + "." +
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rs.getString(2));
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i++;
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}
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System.out.println("");
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// Now get the next ResultSet object from the system - the previous
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// one is automatically closed.
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if (!cs.getMoreResults()) {
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System.out.println("Something went wrong. There should have
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been another ResultSet, exiting.");
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System.exit(0);
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}
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rs = cs.getResultSet();
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// We now have the second ResultSet object that the stored procedure
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// left open. Use that one.
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i = 1;
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while (rs.next()) {
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System.out.println("MYLIBRARY procedure " + rs.getString(1)
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+ "." + rs.getString(2) +
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" parameter: " + rs.getInt(3) + " direction:
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" + rs.getString(4) +
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" data type: " + rs.getString(5));
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i++;
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}
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if (i == 1) {
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System.out.println("None of the stored procedures have any parameters.");
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}
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if (cs.getMoreResults()) {
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System.out.println("Something went wrong,
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there should not be another ResultSet.");
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System.exit(0);
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}
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cs.close(); // close the CallableStatement object
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c.close(); // close the Connection object.
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} catch (Exception e) {
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System.out.println("Something failed..");
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System.out.println("Reason: " + e.getMessage());
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e.printStackTrace();
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}
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}
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}</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="callable.htm" title="The CallableStatement interface extends PreparedStatement and provides support for output and input/output parameters. The CallableStatement interface also has support for input parameters that is provided by the PreparedStatement interface.">CallableStatements</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="callproc.htm" title="Processing SQL stored procedure calls with a CallableStatement object is accomplished with the same methods that are used with a PreparedStatement object.">Process CallableStatements</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="callexample2.htm" title="This example shows how to access a database and then create a procedure with input and output parameters.">Example: Create a procedure with input and output parameters</a></div>
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<div><a href="callexample3.htm" title="This example shows how to access a database and then create a procedure with return values.">Example: Create a procedure with return values</a></div>
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</div>
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</div>
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</body>
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</html>
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