small code refactoring

Author: bahusoid

src/NHibernate/Criterion/EntityProjection.cs

@@ -15,7 +15,7 @@ namespace NHibernate.Criterion
 	public class EntityProjection : IProjection
 	{
 		private string _entityAlias;
-		private System.Type _rootEntity;
+		private System.Type _entityType;
 		private IType[] _types;
 		private string[] _identifierColumnAliases;
 
@@ -29,11 +29,11 @@ public EntityProjection() : this(null, null)
 		/// <summary>
 		/// Entity projection for given type and alias
 		/// </summary>
-		/// <param name="rootEntity">Type of entity</param>
+		/// <param name="entityType">Type of entity</param>
 		/// <param name="entityAlias">Entity alias</param>
-		public EntityProjection(System.Type rootEntity, string entityAlias)
+		public EntityProjection(System.Type entityType, string entityAlias)
 		{
-			_rootEntity = rootEntity;
+			_entityType = entityType;
 			_entityAlias = entityAlias;
 		}
 
@@ -148,19 +148,19 @@ private void SetFields(ICriteriaQuery criteriaQuery)
 				entityProjectionQuery.RegisterEntityProjection(this);
 			}
 
-			if (_rootEntity == null)
+			if (_entityType == null)
 			{
-				_rootEntity = criteria.GetRootEntityTypeIfAvailable();
+				_entityType = criteria.GetRootEntityTypeIfAvailable();
 			}
 
 			if (_entityAlias == null)
 			{
 				_entityAlias = criteria.Alias;
 			}
 
-			Persister = criteriaQuery.Factory.GetEntityPersister(_rootEntity.FullName) as IQueryable;
+			Persister = criteriaQuery.Factory.GetEntityPersister(_entityType.FullName) as IQueryable;
 			if (Persister == null)
-				throw new HibernateException($"Projecting to entities requires a '{typeof(IQueryable).FullName}' persister, '{_rootEntity.FullName}' does not have one.");
+				throw new HibernateException($"Projecting to entities requires a '{typeof(IQueryable).FullName}' persister, '{_entityType.FullName}' does not have one.");
 
 			ICriteria subcriteria = criteria.GetCriteriaByAlias(_entityAlias);
 			if (subcriteria == null)

src/NHibernate/Criterion/Projections.cs

@@ -48,7 +48,7 @@ public static EntityProjection Entity<T>(string alias)
 		}
 
 		/// <summary>
-		/// Returns an aliased entity.
+		/// Projection for entity with given alias.
 		/// </summary>
 		/// /// <typeparam name="T">The type of the entity.</typeparam>
 		/// <param name="alias">The alias of the entity.</param>

src/NHibernate/Criterion/ProjectionsExtensions.cs

@@ -347,7 +347,7 @@ internal static IProjection ProcessAsEntity(MethodCallExpression methodCallExpre
 		{
 			var expression = methodCallExpression.Arguments[0];
 			var aliasName = ExpressionProcessor.FindMemberExpression(expression);
-			return new EntityProjection(expression.Type, aliasName);
+			return Projections.Entity(expression.Type, aliasName);
 		}
 	}
 }