static Repository()
{
DeleteMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(DmlExtensionMethods),
nameof(DmlExtensionMethods.DeleteAsync),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(CancellationToken), 1));
ToListMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(LinqExtensionMethods),
nameof(LinqExtensionMethods.ToListAsync),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(CancellationToken), 1));
FirstOrDefaultMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(LinqExtensionMethods),
nameof(LinqExtensionMethods.FirstOrDefaultAsync),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(CancellationToken), 1));
CountMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(LinqExtensionMethods),
nameof(LinqExtensionMethods.CountAsync),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(CancellationToken), 1));
}
public void CanTranslateOrderByClause()
{
var session = new Mock <ISession>();
var executor = new SpecificationExecutor();
var specification = new WithOrderBy();
var queryable = executor.ExecuteSpecification(session.Object, specification);
var orderByMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.OrderBy),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
var lambda = (MethodCallExpression)queryable.Expression;
Assert.Equal(ExpressionType.Call, lambda.NodeType);
Assert.Same(
orderByMethodInfo.MakeGenericMethod(typeof(User), typeof(int)),
lambda.Method);
Assert.Same(
specification.Expression,
((UnaryExpression)lambda.Arguments.ElementAt(1)).Operand);
}
public void CanTranslateThenFetchCollectionClause()
{
var session = new Mock <ISession>();
var executor = new SpecificationExecutor();
var specification = new WithThenFetchCollection();
var queryable = executor.ExecuteSpecification(session.Object, specification);
var thenFetchManyMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(EagerFetchingExtensionMethods),
nameof(EagerFetchingExtensionMethods.ThenFetchMany),
null,
new ArgumentConstraint(typeof(INhFetchRequest <,>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
var lambda = (MethodCallExpression)queryable.Expression;
Assert.Equal(ExpressionType.Call, lambda.NodeType);
Assert.Same(
thenFetchManyMethodInfo.MakeGenericMethod(typeof(User), typeof(Order), typeof(Good)),
lambda.Method);
Assert.Same(
specification.Expression.Body,
((UnaryExpression)((LambdaExpression)((UnaryExpression)lambda.Arguments.ElementAt(1)).Operand).Body).Operand);
}
public void CanTranslateTakeClause()
{
var session = new Mock <ISession>();
var executor = new SpecificationExecutor();
var specification = new WithTake();
var queryable = executor.ExecuteSpecification(session.Object, specification);
var takeMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Take),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(int), 1));
var lambda = (MethodCallExpression)queryable.Expression;
Assert.Equal(ExpressionType.Call, lambda.NodeType);
Assert.Same(
takeMethodInfo.MakeGenericMethod(typeof(User)),
lambda.Method);
Assert.Equal(
5,
((ConstantExpression)lambda.Arguments.ElementAt(1)).Value);
}
public void CanTranslateJoinClause()
{
var session = new Mock <ISession>();
var executor = new SpecificationExecutor();
var specification = new WithJoin();
var queryable = executor.ExecuteSpecification(session.Object, specification);
var subQuery = executor.CreateQueryable(session.Object, (Query)specification.SubQuery);
var joinMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Join),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(IEnumerable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <, ,>)), 2));
var lambda = (MethodCallExpression)queryable.Expression;
Assert.Equal(ExpressionType.Call, lambda.NodeType);
Assert.Same(
joinMethodInfo.MakeGenericMethod(
typeof(User),
typeof(User),
typeof(int),
typeof(WithJoin.Result)),
lambda.Method);
//Assert.AreEqual(
// subQuery.Expression,
// ((LambdaExpression)((UnaryExpression)lambda.Arguments.ElementAt(1)).Operand).Body);
Assert.Same(
specification.OuterKeySelector.Body,
((LambdaExpression)((UnaryExpression)lambda.Arguments.ElementAt(2)).Operand).Body);
Assert.Same(
specification.InnerKeySelector.Body,
((LambdaExpression)((UnaryExpression)lambda.Arguments.ElementAt(3)).Operand).Body);
Assert.Same(
specification.ResultSelector.Body,
((LambdaExpression)((UnaryExpression)lambda.Arguments.ElementAt(4)).Operand).Body);
}
static SpecificationExecutor()
{
QueryMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Public | BindingFlags.Instance,
typeof(ISession),
nameof(ISession.Query),
null);
WhereMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Where),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
SelectMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Select),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
OrderByMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.OrderBy),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
OrderByDescendingMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.OrderByDescending),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
ThenByMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.ThenBy),
null,
new ArgumentConstraint(typeof(IOrderedQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
ThenByDescendingMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.ThenByDescending),
null,
new ArgumentConstraint(typeof(IOrderedQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
SkipMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Skip),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(int), 1));
SkipWhileMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.SkipWhile),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
TakeMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Take),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(int), 1));
TakeWhileMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.TakeWhile),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
GroupByMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.GroupBy),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
FetchMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(EagerFetchingExtensionMethods),
nameof(EagerFetchingExtensionMethods.Fetch),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
FetchManyMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(EagerFetchingExtensionMethods),
nameof(EagerFetchingExtensionMethods.FetchMany),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
ThenFetchMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(EagerFetchingExtensionMethods),
nameof(EagerFetchingExtensionMethods.ThenFetch),
null,
new ArgumentConstraint(typeof(INhFetchRequest <,>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
ThenFetchManyMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(EagerFetchingExtensionMethods),
nameof(EagerFetchingExtensionMethods.ThenFetchMany),
null,
new ArgumentConstraint(typeof(INhFetchRequest <,>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
JoinMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(Queryable),
nameof(Queryable.Join),
null,
new ArgumentConstraint(typeof(IQueryable <>), 1),
new ArgumentConstraint(typeof(IEnumerable <>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <, ,>)), 2));
}