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<p style="margin: 10px 0 0 0">I made some tests using plain JDBC code. It is not really straightforward to retrieve the keys, you need to specify the name of the key field or fields to the executeUpdate method. Here's a little snippet of working code for the scenario I described above:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
Connection connection = dataSource.getConnection();
Statement statement = connection.createStatement();
<span class="code-comment" style="color: #808080">// Here I specify <span class="code-quote" style="color: #009100; color: #808080">"id"</span> as my only key field to be returned afterwards
</span> statement.executeUpdate(<span class="code-quote" style="color: #009100">"insert into Company (name) values (12)"</span>, <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">String</span>[]{<span class="code-quote" style="color: #009100">"id"</span>});
ResultSet rs = statement.getGeneratedKeys();
<span class="code-keyword" style="color: #000091">if</span> (rs.next()) {
<span class="code-object" style="color: #910091">Integer</span> key = rs.getInt(1);
<span class="code-object" style="color: #910091">System</span>.out.println(<span class="code-quote" style="color: #009100">"GENERATED KEY: "</span> + key);
} <span class="code-keyword" style="color: #000091">else</span> {
<span class="code-object" style="color: #910091">System</span>.out.println(<span class="code-quote" style="color: #009100">"No keys retrieved :("</span>);
}
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<p style="margin: 10px 0 0 0">If you use the simplest version of the <tt>executeUpdate</tt> method you'll get a type conversion error similar to the one I posted when trying to access the keys resultset.</p>
<p style="margin: 10px 0 0 0">I hope this helps.</p>
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