in class *org.sakaiproject.entity.impl.EntityManagerComponent* ， function
public void registerEntityProducer(EntityProducer manager, String
referenceRoot)
{
if (referenceRoot == null || referenceRoot.trim().length() == 0)
{
referenceRoot = String.valueOf(System.currentTimeMillis());
M_log.warn("Entity Producer does not provide a root reference :"
+ manager);
}
if (referenceRoot.startsWith("/"))
{
referenceRoot = referenceRoot.substring(1);
}
// Why copy the producer map in this way? It create two new Map
every regist active. I know the HashMap is asynchronous and efficient, but
why we use ConcurrencyMap ahead?
* m_producersIn.put(referenceRoot, manager);
m_performanceIn.put(manager, new Calls(manager));
m_producers = new HashMap<String, EntityProducer>(m_producersIn);
m_performance = new HashMap<EntityProducer, Calls>(m_performanceIn);
*
}
xuheng
2008-7-25
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