118 lines
6.1 KiB
HTML
118 lines
6.1 KiB
HTML
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<!DOCTYPE html
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<meta name="abstract" content="This example shows how to access a database and then create a procedure with return values." />
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<meta name="description" content="This example shows how to access a database and then create a procedure with return values." />
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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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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Create a procedure with return values</title>
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</head>
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<body id="callexample3"><a name="callexample3"><!-- --></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 return values</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 return values.</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 CallableStatementExample3 {
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public static void main(java.lang.String[] args) {
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// Register the native JDBC driver. If the driver cannot
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// be registered, 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 a return value.
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String sql = "CREATE PROCEDURE MYLIBRARY.SQLSPEX3 " +
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" LANGUAGE SQL SPECIFIC MYLIBRARY.SQLSPEX3 " +
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" EX3: BEGIN " +
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" RETURN 1976; " +
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" END EX3 ";
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try {
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s.executeUpdate(sql);
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} catch (SQLException e) {
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// NOTE: The error is ignored here. The assumptions is
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// made that the only reason this fails is
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// 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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// Prepare a callable statement used to run the procedure.
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CallableStatement cs = c.prepareCall("? = CALL MYLIBRARY.SQLSPEX3");
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// You still need to register the output parameter.
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cs.registerOutParameter(1, Types.INTEGER);
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// Run the procedure.
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cs.executeUpdate();
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// Show that the correct value is returned.
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System.out.println("The return value
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should always be 1976 for this example:
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--> " + cs.getInt(1));
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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="callexample1.htm" title="This example shows how to access a database and then create a procedure with multiple ResultSets.">Example: Create a procedure with multiple ResultSets</a></div>
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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>
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</div>
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</body>
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</html> |