public void Resolve_ReplacesParameter_WithProjection()
{
var node = new SelectManyExpressionNode(
CreateParseInfo(),
_collectionSelector,
ExpressionHelper.CreateLambdaExpression <int, int, AnonymousType> ((a, b) => new AnonymousType(a, b)));
node.Apply(QueryModel, ClauseGenerationContext);
var clause = (FromClauseBase)QueryModel.BodyClauses[0];
var expression = ExpressionHelper.CreateLambdaExpression <AnonymousType, bool> (i => i.a > 5 && i.b > 6);
var result = node.Resolve(expression.Parameters[0], expression.Body, ClauseGenerationContext);
var selectManySourceReference = new QuerySourceReferenceExpression(clause);
// new AnonymousType (SourceReference, selectManySourceReference).a > 5 && new AnonymousType (SourceReference, selectManySourceReference).b > 6
var newAnonymousTypeExpression = Expression.New(
typeof(AnonymousType).GetConstructor(new[] { typeof(int), typeof(int) }), SourceReference, selectManySourceReference);
var anonymousTypeMemberAExpression = Expression.MakeMemberAccess(newAnonymousTypeExpression, typeof(AnonymousType).GetProperty("a"));
var anonymousTypeMemberBExpression = Expression.MakeMemberAccess(newAnonymousTypeExpression, typeof(AnonymousType).GetProperty("b"));
var expectedResult = Expression.MakeBinary(
ExpressionType.AndAlso,
Expression.MakeBinary(ExpressionType.GreaterThan, anonymousTypeMemberAExpression, Expression.Constant(5)),
Expression.MakeBinary(ExpressionType.GreaterThan, anonymousTypeMemberBExpression, Expression.Constant(6)));
ExpressionTreeComparer.CheckAreEqualTrees(expectedResult, result);
}
public void IntegrationTest_WithExpressionNodes()
{
var query = from a in ExpressionHelper.CreateQueryable <Cook> ()
from b in ExpressionHelper.CreateQueryable <Cook>()
where a.ID > 5
select a.ID;
var nodeTypeRegistry = new MethodInfoBasedNodeTypeRegistry();
nodeTypeRegistry.Register(SelectExpressionNode.GetSupportedMethods(), typeof(SelectExpressionNode));
nodeTypeRegistry.Register(SelectManyExpressionNode.GetSupportedMethods(), typeof(SelectManyExpressionNode));
nodeTypeRegistry.Register(WhereExpressionNode.GetSupportedMethods(), typeof(WhereExpressionNode));
var selectNode = (SelectExpressionNode) new ExpressionTreeParser(nodeTypeRegistry, new NullExpressionTreeProcessor()).ParseTree(query.Expression);
var clauseGenerationContext = new ClauseGenerationContext(new MethodInfoBasedNodeTypeRegistry());
var selectManyNode = (SelectManyExpressionNode)selectNode.Source.Source;
var mainSourceExpressionNode = (MainSourceExpressionNode)selectManyNode.Source;
var queryModel = mainSourceExpressionNode.Apply(null, clauseGenerationContext);
var mainFromClause = queryModel.MainFromClause;
selectManyNode.Apply(queryModel, clauseGenerationContext); // only to add the clause to the mapping
var selectProjection = selectNode.GetResolvedSelector(clauseGenerationContext); // new ( a = IR (a), b = IR (b) ).a.ID
var result = TransparentIdentifierRemovingExpressionVisitor.ReplaceTransparentIdentifiers(selectProjection);
// IR(a).ID
Assert.That(result, Is.InstanceOf(typeof(MemberExpression)));
Expression innerExpression = ((MemberExpression)result).Expression;
Assert.That(innerExpression, Is.InstanceOf(typeof(QuerySourceReferenceExpression)));
Assert.That(((QuerySourceReferenceExpression)innerExpression).ReferencedQuerySource, Is.SameAs(mainFromClause));
}
public override void SetUp()
{
base.SetUp();
_collectionSelector = ExpressionHelper.CreateLambdaExpression <int, double[]> (i => new double[1]);
_resultSelector = ExpressionHelper.CreateLambdaExpression <int, int, bool> ((i, j) => i > j);
_nodeWithResultSelector = new SelectManyExpressionNode(CreateParseInfo(SourceNode, "j"), _collectionSelector, _resultSelector);
}
public void Initialization_WithoutResultSelector()
{
var nodeWithoutWithResultSelector = new SelectManyExpressionNode(CreateParseInfo(SourceNode, "j"), _collectionSelector, null);
var expectedResultSelectorParameter1 = Expression.Parameter(typeof(int), "i");
var expectedResultSelectorParameter2 = Expression.Parameter(typeof(double), "j");
var expectedResultSelector = Expression.Lambda(expectedResultSelectorParameter2, expectedResultSelectorParameter1, expectedResultSelectorParameter2);
ExpressionTreeComparer.CheckAreEqualTrees(expectedResultSelector, nodeWithoutWithResultSelector.ResultSelector);
}
public void GetSupportedMethods()
{
Assert.That(
SelectManyExpressionNode.GetSupportedMethods(),
Is.EquivalentTo(
new[]
{
GetGenericMethodDefinition(() => Queryable.SelectMany <object, object[], object> (null, o => null, null)),
GetGenericMethodDefinition(() => Enumerable.SelectMany <object, object[], object> (null, o => null, null)),
GetGenericMethodDefinition(() => Queryable.SelectMany <object, object[]> (null, o => null)),
GetGenericMethodDefinition(() => Enumerable.SelectMany <object, object[]> (null, o => null)),
}));
}
/// <summary>
/// Creates a <see cref="MethodInfoBasedNodeTypeRegistry"/> and registers all relevant <see cref="IExpressionNode"/> implementations in the <b>Remotion.Linq</b> assembly.
/// </summary>
/// <returns>
/// A <see cref="MethodInfoBasedNodeTypeRegistry"/> with all <see cref="IExpressionNode"/> types in the <b>Remotion.Linq</b> assembly registered.
/// </returns>
public static MethodInfoBasedNodeTypeRegistry CreateFromRelinqAssembly()
{
var registry = new MethodInfoBasedNodeTypeRegistry();
registry.Register(AggregateExpressionNode.GetSupportedMethods(), typeof(AggregateExpressionNode));
registry.Register(AggregateFromSeedExpressionNode.GetSupportedMethods(), typeof(AggregateFromSeedExpressionNode));
registry.Register(AllExpressionNode.GetSupportedMethods(), typeof(AllExpressionNode));
registry.Register(AnyExpressionNode.GetSupportedMethods(), typeof(AnyExpressionNode));
registry.Register(AsQueryableExpressionNode.GetSupportedMethods(), typeof(AsQueryableExpressionNode));
registry.Register(AverageExpressionNode.GetSupportedMethods(), typeof(AverageExpressionNode));
registry.Register(CastExpressionNode.GetSupportedMethods(), typeof(CastExpressionNode));
registry.Register(ConcatExpressionNode.GetSupportedMethods(), typeof(ConcatExpressionNode));
registry.Register(ContainsExpressionNode.GetSupportedMethods(), typeof(ContainsExpressionNode));
registry.Register(CountExpressionNode.GetSupportedMethods(), typeof(CountExpressionNode));
registry.Register(DefaultIfEmptyExpressionNode.GetSupportedMethods(), typeof(DefaultIfEmptyExpressionNode));
registry.Register(DistinctExpressionNode.GetSupportedMethods(), typeof(DistinctExpressionNode));
registry.Register(ExceptExpressionNode.GetSupportedMethods(), typeof(ExceptExpressionNode));
registry.Register(FirstExpressionNode.GetSupportedMethods(), typeof(FirstExpressionNode));
registry.Register(GroupByExpressionNode.GetSupportedMethods(), typeof(GroupByExpressionNode));
registry.Register(GroupByWithResultSelectorExpressionNode.GetSupportedMethods(), typeof(GroupByWithResultSelectorExpressionNode));
registry.Register(GroupJoinExpressionNode.GetSupportedMethods(), typeof(GroupJoinExpressionNode));
registry.Register(IntersectExpressionNode.GetSupportedMethods(), typeof(IntersectExpressionNode));
registry.Register(JoinExpressionNode.GetSupportedMethods(), typeof(JoinExpressionNode));
registry.Register(LastExpressionNode.GetSupportedMethods(), typeof(LastExpressionNode));
registry.Register(LongCountExpressionNode.GetSupportedMethods(), typeof(LongCountExpressionNode));
registry.Register(MaxExpressionNode.GetSupportedMethods(), typeof(MaxExpressionNode));
registry.Register(MinExpressionNode.GetSupportedMethods(), typeof(MinExpressionNode));
registry.Register(OfTypeExpressionNode.GetSupportedMethods(), typeof(OfTypeExpressionNode));
registry.Register(OrderByDescendingExpressionNode.GetSupportedMethods(), typeof(OrderByDescendingExpressionNode));
registry.Register(OrderByExpressionNode.GetSupportedMethods(), typeof(OrderByExpressionNode));
registry.Register(ReverseExpressionNode.GetSupportedMethods(), typeof(ReverseExpressionNode));
registry.Register(SelectExpressionNode.GetSupportedMethods(), typeof(SelectExpressionNode));
registry.Register(SelectManyExpressionNode.GetSupportedMethods(), typeof(SelectManyExpressionNode));
registry.Register(SingleExpressionNode.GetSupportedMethods(), typeof(SingleExpressionNode));
registry.Register(SkipExpressionNode.GetSupportedMethods(), typeof(SkipExpressionNode));
registry.Register(SumExpressionNode.GetSupportedMethods(), typeof(SumExpressionNode));
registry.Register(TakeExpressionNode.GetSupportedMethods(), typeof(TakeExpressionNode));
registry.Register(ThenByDescendingExpressionNode.GetSupportedMethods(), typeof(ThenByDescendingExpressionNode));
registry.Register(ThenByExpressionNode.GetSupportedMethods(), typeof(ThenByExpressionNode));
registry.Register(UnionExpressionNode.GetSupportedMethods(), typeof(UnionExpressionNode));
registry.Register(WhereExpressionNode.GetSupportedMethods(), typeof(WhereExpressionNode));
return(registry);
}
