[morph-developer] [ morph-Bugs-1700375 ] Improve error messages for nested transformations

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Bugs item #1700375, was opened at 2007-04-13 18:12
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Matt Sgarlata (sgarlatm)
Assigned to: Nobody/Anonymous (nobody)
Summary: Improve error messages for nested transformations

Initial Comment:
When an error occurs during a deep copy of an object graph, the error messages are confusing.  Here is an example:

net.sf.morph.transform.TransformationException: Error copying source [com.spider.cms.hdao.impl.PerformanceChartHDao@1, com.spider.cms.hdao.impl.PerformanceChartHDao@2, com.spider.cms.hdao.impl.PerformanceChartHDao@1] (class org.hibernate.collection.PersistentList) to destination [com.spider.cms.hdao.impl.PerformanceChartHDao@1, com.spider.cms.hdao.impl.PerformanceChartHDao@2, com.spider.cms.hdao.impl.PerformanceChartHDao@1] (class org.hibernate.collection.PersistentList) at net.sf.morph.transform.transformers.BaseTransformer.copy(BaseTransformer.java:402) at net.sf.morph.transform.transformers.SimpleDelegatingTransformer.copyImpl(SimpleDelegatingTransformer.java:245) at 

It would be nice if we could spit out something better like "Error copying property some.nested.path where source was ___ and destination was ___" or perhaps "Error copying property 'path' of object at path 'some.nested' where source was __ and destination was ___"

Right now the error message looks like it could be something wrong with Morph when really that's not the case at all.  The error messages need to give more context of where we are in the graph that the error is happening.

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