[news.eclipse.rt.eclipselink] Re: loader constraint violation

[tbee <tbee@xxxxxxxx>]

> java.lang.LinkageError: loader constraint violation: loader (instance of 
> sun/misc/Launcher$AppClassLoader) previously initiated loading for a 
> different type with name "nl/reinders/bm/Batch"

Ugh. So I have an entity called a "batch" representing an amount of the same article in a certain form. Such a batch has "amount providers", these are entities that either add to or remove an amount from the batch.

These amount providers all implement the BatchAmountProvider interface:

	public interface BatchAmountProvider
	{
		public java.math.BigInteger getAmount() ;
		public void setAmount(java.math.BigInteger value);		
	}


This has worked fine, until I needed to add two methods to the interface allowing me to access the batch they are part of. These methods were already present in all of the implementing classes, I only formalized that by adding them to the interface:

	public interface BatchAmountProvider
	{
		public nl.reinders.bm.Batch getBatch();
		public void setBatch(nl.reinders.bm.Batch value);
		
		public java.math.BigInteger getAmount() ;
		public void setAmount(java.math.BigInteger value);		
	}


Either of these two lines are the culprit and cause the loader constraint violation. I still don't understand why.

Tom