I have a class with a property ipRcja (String) , and a column in a table of my DB of type cidr (Postgres), when i try to persist the object into the data base:
...
myObject.setIpRcja("127.0.1.1/32");
...
session.saveOrUpdate(myObject);

i get the next message:

ERROR: The column «ip_rcja» is of type cidr but the expression is of type character varying
Could not synchronize database state with session
org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update

In my *.hbm.xml i have:

<property name="ipRcja" type="string">
<column name="ip_rcja">
<comment>Ip center</comment>
</column>
</property>

I also tried using the type java.net.InetAddress:
..
myObject.setIpRcja(InetAddres.getHostByName("localhost"));
//return a InetAddres Object
session.saveOrUpdate(myObject);
...
...
<property name="ipRcja" type="java.net.InetAddress">
<column name="ip_rcja">
<comment>Ip center</comment>
</column>
</property>

And i get a similar error:


ERROR: The column «ip_rcja» is of type cidr but the expression is of type byte
Could not synchronize database state with session
org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update

Please help¡¡¡ :(

Your problem seems like a good reason to write a class that implements org.hibernate.usertype.UserType; see the class documentation and relevant manual section. For something simple like an Inet4Address, it should only take about 50 lines of code or so.