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POCasting JDBC Connection
 

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    <p>I'm working on a new module for a project which should connect to a SQL database using a JDBC driver. I am required to implement a Connection Interface with method <code>getConnection()</code> which is of the return type <code>org.forgerock.opendj.ldap.Connection</code>. However, the JDBC driver returns a connection of the type <code>com.mysql.jdbc.JDBC4Connection</code>. Casting gives me the following error: </p> <pre><code>Exception in thread "main" java.lang.ClassCastException: com.mysql.jdbc.JDBC4Connection cannot be cast to org.forgerock.opendj.ldap.Connection at org.forgerock.opendj.virtual.JDBCConnectionFactory.getConnection(JDBCConnectionFactory.java:105) </code></pre> <p>What would be the best way to obtain a connection of the type <code>org.forgerock.opendj.ldap.Connection</code> instead of the <code>com.mysql.jdbc.JDBC4Connection</code>?</p> <p>The JDBCConnectionFactory class:</p> <pre><code>public class JDBCConnectionFactory implements ConnectionFactory{ private final String driverName = "com.mysql.jdbc.Driver"; private Connection con = null; private String ConnectionUrl = ""; private final String Host; private final int Port; private final String DbName; private final String UserName; private final String UserPass; public JDBCConnectionFactory(final String host, final int port, final String dbName, final String userName, final String userPass) { this.Host = host; this.Port = port; this.DbName = dbName; this.UserName = userName; this.UserPass = userPass; this.ConnectionUrl="jdbc:mysql://" .concat(this.Host+":") .concat(this.Port+"/") .concat(this.DbName); try { Class.forName(driverName); } catch (ClassNotFoundException e) { System.out.println(e.toString()); } } </code></pre> <p>The getConnection method: </p> <pre><code>@Override public org.forgerock.opendj.ldap.Connection getConnection()throws ErrorResultException { try { con = DriverManager .getConnection(this.ConnectionUrl,this.UserName,this.UserPass); org.forgerock.opendj.ldap.Connection newcon = (org.forgerock.opendj.ldap.Connection) con; System.out.println("Connection created."); return newcon; } catch (SQLException e) { System.out.println(e.toString()); return null; } } </code></pre>
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    1. USHarry Joy
    1. USGlenn
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    1. COYou're creating a MySQL JDBC connection via a MySQL driver. Why would you think you'd get anything different ?
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      1. USBrian Agnew
    2. CO@BrianAgnew I don't expect anything different than com.mysql.jdbc.JDBC4Connection from the driver, I'm just looking for the best way to convert it to the type org.forgerock.opendj.ldap.Connection.
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      1. USGlenn
    3. COSo casting isn't a *conversion*. And I'm still suspicious that you're connecting to a MySQL database, and trying to interpret it as an LDAP server.
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      1. USBrian Agnew
 

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