[Nhibernate-commit] SF.net SVN: nhibernate:[4912] trunk/nhibernate/src/NHibernate/Impl/ SessionFactoryImpl.cs

[<aye...@us...>]

Revision: 4912
          http://nhibernate.svn.sourceforge.net/nhibernate/?rev=4912&view=rev
Author:   ayenderahien
Date:     2010-01-06 22:11:57 +0000 (Wed, 06 Jan 2010)

Log Message:
-----------
Changing throwing indexer to TryGetValue

Modified Paths:
--------------
    trunk/nhibernate/src/NHibernate/Impl/SessionFactoryImpl.cs

Modified: trunk/nhibernate/src/NHibernate/Impl/SessionFactoryImpl.cs
===================================================================
--- trunk/nhibernate/src/NHibernate/Impl/SessionFactoryImpl.cs	2010-01-06 21:41:19 UTC (rev 4911)
+++ trunk/nhibernate/src/NHibernate/Impl/SessionFactoryImpl.cs	2010-01-06 22:11:57 UTC (rev 4912)
@@ -465,14 +465,10 @@
 
 		public IEntityPersister GetEntityPersister(string entityName)
 		{
-			try
-			{
-				return entityPersisters[entityName];
-			}
-			catch (KeyNotFoundException)
-			{
-				throw new MappingException("No persister for: " + entityName);
-			}
+		    IEntityPersister value;
+            if (entityPersisters.TryGetValue(entityName, out value) == false)
+                throw new MappingException("No persister for: " + entityName);
+            return value;
 		}
 
 		public IEntityPersister TryGetEntityPersister(string entityName)
@@ -484,14 +480,10 @@
 
 		public ICollectionPersister GetCollectionPersister(string role)
 		{
-			try
-			{
-				return collectionPersisters[role];
-			}
-			catch (KeyNotFoundException)
-			{
+		    ICollectionPersister value;
+		    if(collectionPersisters.TryGetValue(role, out value) == false)
 				throw new MappingException("Unknown collection role: " + role);
-			}
+            return value;
 		}
 
 		public ISet<string> GetCollectionRolesByEntityParticipant(string entityName)
@@ -979,14 +971,10 @@
 
 		public FilterDefinition GetFilterDefinition(string filterName)
 		{
-			try
-			{
-				return filters[filterName];
-			}
-			catch (KeyNotFoundException)
-			{
+		    FilterDefinition value;
+		    if(filters.TryGetValue(filterName,out value)==false)
 				throw new HibernateException("No such filter configured [" + filterName + "]");
-			}
+            return value;
 		}
 
 		public ICollection<string> DefinedFilterNames


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