How to clone JRDesignXXX objects

[barryguild1.com]

How do you clone the JRDesignXXX objects like JRDesignTextField?

[barryguild1.com]

All else fails, I guess I can use something like the following since it is Serializable

 

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.Serializable;

 

public class CloneSerialized {

public final static <T extends Serializable> T cloneObject(T o) throws Exception

{

ByteArrayOutputStream bos = new ByteArrayOutputStream();

ObjectOutputStream oos = new ObjectOutputStream(bos);

 

oos.writeObject(o);

oos.close();

 

ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());

ObjectInputStream ois = new ObjectInputStream(bis);

 

T ret = (T)ois.readObject();

 

return ret;

}

}

[barryguild1.com]

Turns out this is very slow; works but slow; likely because it is having to follow object references that get serialized as well

[dsteck]

JasperReports version 2.0.3 and later now includes clone support for JRDesign objects. This is exactly the right solution to the problem of dynamically generating templates with multiple columns not known until runtime.

Way to go JR guys!