A reference to net.sf.hibernate.test.DoubleStringType is made in the Hibernate Reference Documentation. Where do I find such class? The package test doesn't seem to exist in the API, and searching google doesn't turn up anything other than the documentation reference. Please help!

You have to write it yourself. That was the point, AFAIK.

It doesn't seem that way to me. They refer to it as if it was already created. In fact, they say "Check out net.sf.hibernate.test.DoubleStringType to see the kind of things that are possible"... Perhaps there is a downloadable sample package?

In src/net/sf/hibernate/test dir of the distribution

Thanks, I found it, but I only had access to the compiled class, so my search for a .java file failed ;-)

http://cvs.sourceforge.net/viewcvs.py/hibernate/Hibernate2/src/net/sf/hibernate/test/DoubleStringType.java

Click the download link near the top of the page.

Right, I can now write by hand a hibernate mapping file that maps a single java object to two database columns (because it seems that middlegen can't generate this automatically?). Are there tutorials for writing the actual class file that gets put into the hibernate-2.0.3/build/net/sf/hibernate/type directory (to map an object to 2 database columns)? Any help would be appreciated.

Merci, Emmanuel. I must say, you guys are excellent on your response times! Nice to know there is good support for your "product".

The link you gave me is the file DoubleTypeString.java. Thats great as I wasn't able to get it from the previous reply with the link to CVS. I still of course need help creating the file in my last posting, that goes into the hibernate-2.0.3/build/net/sf/hibernate/type directory. I will also need to write the hibernate java file for the java object:

java object (needs to map to 2 date columns in the DB)
-> hibernate mapping file .hbm.xml
-> hibernate java
-> hibernate class file (hibernate-2.0.3/build/net/sf/hibernate/type)

I don't really get you



The Hibernate DoubleStringType is the custom type : check the link to find the code.

There is nothing else to do

Ok, everything is understood now. Thanks for your help.

Sorry, thought everything was ok, but its not, as I realised now that because we can't use middlegen, the hibernate java file won't be generated automatically, and then compiled. These "java" files contain basically the database fields, getters and setters and some other methods. An example is below. Do I need to put anything special in my own "java" file to handle the fact that the type maps to 2 db columns?

package com.lbss.framework.persistence.test.data;

import java.io.Serializable;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;

/** @author Hibernate CodeGenerator */
public class TypeTest implements Serializable {

/** identifier field */
private Long id;

...

public java.lang.Long getId() {
return this.id;
}

public void setId(java.lang.Long id) {
this.id = id;
}

...

public String toString() {
return new ToStringBuilder(this)
.append("id", getId())
.toString();
}

public boolean equals(Object other) {
if ( !(other instanceof TypeTest) ) return false;
TypeTest castOther = (TypeTest) other;
return new EqualsBuilder()
.append(this.getId(), castOther.getId())
.isEquals();
}

public int hashCode() {
return new HashCodeBuilder()
.append(getId())
.toHashCode();
}

}