Re: Mapping an InetAddress to a Postgresql inet value
Re: Mapping an InetAddress to a Postgresql inet value
- Subject: Re: Mapping an InetAddress to a Postgresql inet value
- From: Miguel Arroz <email@hidden>
- Date: Sun, 23 Dec 2007 19:44:23 +0000
Hi!
On 2007/12/23, at 19:35, Francis Labrie wrote:
Unfortunately, you can't convert this "inet" datatype diretly to
"java.net.InetAddress" Java class, because the PostgreSQL datatype
holds the netmask as well, unlike the Java class (read this thread:
<http://osdir.com/ml/db.postgresql.jdbc/2003-12/msg00031.html>).
But you can create a custom class to manage this easily. For the
example below, you just have to bound factory method to "valueOf"
and conversion method to "toString":
I ended up doing a similar solution, but in the opposite
direction: using the InetAddress class and dump it in binary to the DB:
import java.net.InetAddress;
import java.net.UnknownHostException;
import com.webobjects.foundation.NSData;
public class MyInetAddress {
private InetAddress address;
private MyInetAddress() {
}
public static MyInetAddress fromString( String theString ) {
try {
MyInetAddress result = new MyInetAddress();
result.setAddress(InetAddress.getByName( theString ));
return result;
} catch (UnknownHostException e) {
throw new RuntimeException("Error creating address", e);
}
}
public static MyInetAddress fromBinary( NSData data ) {
try {
MyInetAddress result = new MyInetAddress();
result.setAddress(InetAddress.getByAddress(data.bytes()));
return result;
} catch (UnknownHostException e) {
throw new RuntimeException("Error creating address", e);
}
}
public NSData toBinary() {
return new NSData(address.getAddress());
}
private void setAddress( InetAddress addr ) {
address = addr;
}
public InetAddress address() {
return address;
}
}
Kind regards, and Boas Festas e um feliz Ano Novo!
Obrigado! :)
Yours
Miguel Arroz
Miguel Arroz
http://www.terminalapp.net
http://www.ipragma.com
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