public void ResolveExpression_OptimizesEntityRefMemberComparisons()
{
// This test proves that the first stage (without resolving SqlEntityRefMemberExpressions) is executed.
var memberInfo = typeof(Kitchen).GetProperty("Cook");
var entityExpression = SqlStatementModelObjectMother.CreateSqlEntityDefinitionExpression(typeof(Kitchen));
var fakeOptimizedRefIdentity = new SqlColumnDefinitionExpression(typeof(int), "c", "KitchenID", false);
var entityRefMemberExpression = new SqlEntityRefMemberExpression(entityExpression, memberInfo);
_resolverMock
.Stub(stub => stub.TryResolveOptimizedIdentity(entityRefMemberExpression))
.Return(fakeOptimizedRefIdentity);
var entity = CreateEntityExpressionWithIdentity(typeof(Cook), typeof(int));
var binary = Expression.Equal(entityRefMemberExpression, entity);
var sqlStatementBuilder = new SqlStatementBuilder();
var result = ResolvingSelectExpressionVisitor.ResolveExpression(
binary, _resolverMock, _stageMock, _mappingResolutionContext, _generator, sqlStatementBuilder);
var expected = Expression.Equal(fakeOptimizedRefIdentity, entity.GetIdentityExpression());
SqlExpressionTreeComparer.CheckAreEqualTrees(expected, result);
}
public void ResolveExpression_ResolvesSqlEntityRefMemberExpressions()
{
// This test proves that the second stage (resolving SqlEntityRefMemberExpressions) is executed.
var memberInfo = typeof(Cook).GetProperty("Kitchen");
var entityExpression = SqlStatementModelObjectMother.CreateSqlEntityDefinitionExpression(typeof(Cook));
var entityRefMemberExpression = new SqlEntityRefMemberExpression(entityExpression, memberInfo);
var sqlStatementBuilder = new SqlStatementBuilder();
var fakeResult = SqlStatementModelObjectMother.CreateSqlEntityDefinitionExpression(typeof(Kitchen));
_stageMock
.Expect(
mock => mock.ResolveEntityRefMemberExpression(
Arg.Is(entityRefMemberExpression),
Arg <UnresolvedJoinInfo> .Matches(
i => i.OriginatingEntity == entityExpression && i.MemberInfo == memberInfo && i.Cardinality == JoinCardinality.One),
Arg.Is(_mappingResolutionContext)))
.Return(fakeResult);
var result = ResolvingSelectExpressionVisitor.ResolveExpression(
entityRefMemberExpression, _resolverMock, _stageMock, _mappingResolutionContext, _generator, sqlStatementBuilder);
Assert.That(result, Is.SameAs(fakeResult));
}
