/// <summary>
/// Analyzes a lambda expression to check whether it can be satisfied with
/// $select and client-side materialization.
/// </summary>
/// <param name="le">Lambda expression.</param>
/// <param name="re">Resource expression in scope.</param>
/// <param name="matchMembers">Whether member accesses are matched as top-level projections.</param>
/// <param name="context">Context of expression to analyze.</param>
/// <returns>true if the lambda is a client-side projection; false otherwise.</returns>
internal static bool Analyze(LambdaExpression le, ResourceExpression re, bool matchMembers, DataServiceContext context)
{
Debug.Assert(le != null, "le != null");
if (le.Body.NodeType == ExpressionType.Constant)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(le.Body.Type))
{
throw new NotSupportedException(Strings.ALinq_CannotCreateConstantEntity);
}
re.Projection = new ProjectionQueryOptionExpression(le.Body.Type, le, new List <string>());
return(true);
}
if (le.Body.NodeType == ExpressionType.MemberInit || le.Body.NodeType == ExpressionType.New)
{
AnalyzeResourceExpression(le, re, context);
return(true);
}
if (matchMembers)
{
// Members can be projected standalone or type-casted.
Expression withoutConverts = SkipConverts(le.Body);
if (withoutConverts.NodeType == ExpressionType.MemberAccess)
{
AnalyzeResourceExpression(le, re, context);
return(true);
}
}
return(false);
}
internal override Expression VisitMemberAccess(MemberExpression m)
{
PropertyInfo info;
Expression expression;
Type type = m.Expression.Type;
this.leafExpressionIsMemberAccess = true;
if (PrimitiveType.IsKnownNullableType(type))
{
this.leafExpressionIsMemberAccess = false;
return(base.VisitMemberAccess(m));
}
if (ProjectionAnalyzer.IsCollectionProducingExpression(m.Expression))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
if (!ResourceBinder.PatternRules.MatchNonPrivateReadableProperty(m, out info, out expression))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
Expression expression2 = base.VisitMemberAccess(m);
if (ClientTypeUtil.TypeOrElementTypeIsEntity(type))
{
Type type2;
ResourceBinder.StripTo <Expression>(m.Expression, out type2);
this.box.AppendPropertyToPath(info, type2, this.context);
this.leafExpressionIsMemberAccess = false;
}
return(expression2);
}
/// <summary>
/// Materializes the primitive data values in the given list of <paramref name="values"/>.
/// </summary>
/// <param name="actualType">Actual type for properties being materialized.</param>
/// <param name="values">List of values to materialize.</param>
/// <param name="undeclaredPropertyBehavior">
/// Whether properties missing from the client types should be supported or throw exception.
/// </param>
/// <remarks>
/// Values are materialized in-place with each <see cref="ODataProperty"/>
/// instance.
/// </remarks>
internal void MaterializeDataValues(ClientTypeAnnotation actualType, IEnumerable <ODataProperty> values, UndeclaredPropertyBehavior undeclaredPropertyBehavior)
{
Debug.Assert(actualType != null, "actualType != null");
Debug.Assert(values != null, "values != null");
foreach (var odataProperty in values)
{
if (odataProperty.Value is ODataStreamReferenceValue)
{
continue;
}
string propertyName = odataProperty.Name;
var property = actualType.GetProperty(propertyName, undeclaredPropertyBehavior); // may throw
if (property == null)
{
continue;
}
// we should throw if the property type on the client does not match with the property type in the server
// This is a breaking change from V1/V2 where we allowed materialization of entities into non-entities and vice versa
if (ClientTypeUtil.TypeOrElementTypeIsEntity(property.PropertyType))
{
throw DSClient.Error.InvalidOperation(DSClient.Strings.AtomMaterializer_InvalidEntityType(property.EntityCollectionItemType ?? property.PropertyType));
}
if (property.IsKnownType)
{
// Note: MaterializeDataValue materializes only properties of primitive types. Materialization specific
// to complex types and collections is done later.
this.MaterializePrimitiveDataValue(property.NullablePropertyType, odataProperty);
}
}
}
internal override NewExpression VisitNew(NewExpression nex)
{
if (ResourceBinder.PatternRules.MatchNewDataServiceCollectionOfT(nex))
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(nex.Type))
{
foreach (Expression expression in nex.Arguments)
{
if (expression.NodeType != ExpressionType.Constant)
{
base.Visit(expression);
}
}
return(nex);
}
}
else if (ResourceBinder.PatternRules.MatchNewCollectionOfT(nex) && !ClientTypeUtil.TypeOrElementTypeIsEntity(nex.Type))
{
foreach (Expression expression2 in nex.Arguments)
{
if (expression2.NodeType != ExpressionType.Constant)
{
base.Visit(expression2);
}
}
return(nex);
}
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, nex.ToString()));
}
/// <summary>
/// Appends the given property and source TypeAs to the projection and expand paths.
/// </summary>
/// <param name="pi">Navigation property</param>
/// <param name="convertedSourceType">The TypeAs type if the source of the member access expression is a TypeAs operation. Null otherwise.</param>
/// <param name="context">Data service context instance.</param>
internal void AppendPropertyToPath(PropertyInfo pi, Type convertedSourceType, DataServiceContext context)
{
Debug.Assert(pi != null, "pi != null");
StringBuilder sb;
bool propertyTypeisEntityType = ClientTypeUtil.TypeOrElementTypeIsEntity(pi.PropertyType);
string convertedSourceTypeName = (convertedSourceType == null) ? null : UriHelper.GetEntityTypeNameForUriAndValidateMaxProtocolVersion(convertedSourceType, context, ref this.uriVersion);
if (propertyTypeisEntityType)
{
// an entity, so need to append to expand path also
if (convertedSourceType != null)
{
AppendToExpandPath(convertedSourceTypeName);
}
AppendToExpandPath(pi.Name);
}
sb = null;
if (convertedSourceType != null)
{
AppendToProjectionPath(convertedSourceTypeName, false);
}
sb = AppendToProjectionPath(pi.Name, false);
if (propertyTypeisEntityType)
{
AddEntireEntityMarker(sb);
}
}
/// <summary>
/// CODE: x
/// ORIGINAL: Convert(x, t) where t is assignable from typeof(x)
/// ORIGINAL: x as t, where t is assignable from typeof(x)
/// ORIGINAL: and typeof(x) or t are not known primitives unless typeof(x) == t
/// ORIGINAL: and x is not a collection of entity types
/// NORMALIZED: x
/// </summary>
internal override Expression VisitUnary(UnaryExpression u)
{
UnaryExpression visited = (UnaryExpression)base.VisitUnary(u);
Expression result = visited;
// Note that typically we would record a potential rewrite
// after extracting the conversion, but we avoid doing this
// because it breaks undoing the rewrite by making the non-local
// change circular, ie:
// unary [operand = a]
// becomes
// a <- unary [operand = a]
// So the undoing visits a, then the original unary, then the
// operand and again the unary, the operand, etc.
this.RecordRewrite(u, result);
// Convert(x, t) or x as t, where t is assignable from typeof(x)
if ((visited.NodeType == ExpressionType.Convert || visited.NodeType == ExpressionType.TypeAs) && visited.Type.IsAssignableFrom(visited.Operand.Type))
{
// typeof(x) or t are not known primitives unless typeof(x) == t
if (!PrimitiveType.IsKnownNullableType(visited.Operand.Type) && !PrimitiveType.IsKnownNullableType(visited.Type) || visited.Operand.Type == visited.Type)
{
// x is not a collection of entity types
if (!(ClientTypeUtil.TypeOrElementTypeIsEntity(visited.Operand.Type) && ProjectionAnalyzer.IsCollectionProducingExpression(visited.Operand)))
{
result = visited.Operand;
}
}
}
return(result);
}
internal override Expression VisitLambda(LambdaExpression lambda)
{
if (!this.topLevelProjectionFound || ((lambda.Parameters.Count == 1) && ClientTypeUtil.TypeOrElementTypeIsEntity(lambda.Parameters[0].Type)))
{
this.topLevelProjectionFound = true;
ParameterExpression expectedType = Expression.Parameter(typeof(Type), "type" + this.identifierId);
ParameterExpression entry = Expression.Parameter(typeof(object), "entry" + this.identifierId);
this.identifierId++;
this.pathBuilder.EnterLambdaScope(lambda, entry, expectedType);
ProjectionPath startPath = new ProjectionPath(lambda.Parameters[0], expectedType, entry);
ProjectionPathSegment item = new ProjectionPathSegment(startPath, null, null);
startPath.Add(item);
ExpressionAnnotation annotation = new ExpressionAnnotation {
Segment = item
};
this.annotations[lambda.Parameters[0]] = annotation;
Expression expression4 = this.Visit(lambda.Body);
if (expression4.Type.IsValueType)
{
expression4 = Expression.Convert(expression4, typeof(object));
}
Expression expression = Expression.Lambda <Func <object, object, Type, object> >(expression4, new ParameterExpression[] { this.materializerExpression, entry, expectedType });
this.pathBuilder.LeaveLambdaScope();
return(expression);
}
return(base.VisitLambda(lambda));
}
internal override Expression VisitConditional(ConditionalExpression conditional)
{
Expression expressionBeforeNormalization = this.GetExpressionBeforeNormalization(conditional);
if (expressionBeforeNormalization != conditional)
{
return(this.Visit(expressionBeforeNormalization));
}
ResourceBinder.PatternRules.MatchNullCheckResult nullCheck = ResourceBinder.PatternRules.MatchNullCheck(this.pathBuilder.LambdaParameterInScope, conditional);
if (!nullCheck.Match || !ClientTypeUtil.TypeOrElementTypeIsEntity(ResourceBinder.StripConvertToAssignable(nullCheck.TestToNullExpression).Type))
{
Expression test = null;
if (nullCheck.Match)
{
Expression left = this.Visit(nullCheck.TestToNullExpression);
if (left.NodeType == ExpressionType.Convert)
{
left = ((UnaryExpression)left).Operand;
}
test = Expression.MakeBinary(ExpressionType.Equal, left, Expression.Constant(null));
}
if (test == null)
{
test = this.Visit(conditional.Test);
}
Expression ifTrue = this.Visit(conditional.IfTrue);
Expression ifFalse = this.Visit(conditional.IfFalse);
if (((test != conditional.Test) || (ifTrue != conditional.IfTrue)) || (ifFalse != conditional.IfFalse))
{
return(Expression.Condition(test, ifTrue, ifFalse, ifTrue.Type.IsAssignableFrom(ifFalse.Type) ? ifTrue.Type : ifFalse.Type));
}
}
return(this.RebindConditionalNullCheck(conditional, nullCheck));
}
private Expression RebindMethodCallForMemberSelect(MethodCallExpression call)
{
Expression key = null;
ExpressionAnnotation annotation;
Expression expression2 = this.Visit(call.Arguments[0]);
this.annotations.TryGetValue(expression2, out annotation);
if (annotation != null)
{
LambdaExpression expression3 = call.Arguments[1] as LambdaExpression;
ParameterExpression expression4 = expression3.Parameters.Last <ParameterExpression>();
Expression expression5 = this.Visit(call.Arguments[1]);
if (ClientTypeUtil.TypeOrElementTypeIsEntity(expression4.Type))
{
Type type = call.Method.ReturnType.GetGenericArguments()[0];
key = CallMaterializer("ProjectionSelect", new Expression[] { this.materializerExpression, this.pathBuilder.ParameterEntryInScope, this.pathBuilder.ExpectedParamTypeInScope, Expression.Constant(type, typeof(Type)), Expression.Constant(annotation.Segment.StartPath, typeof(object)), expression5 });
this.annotations.Add(key, annotation);
key = CallMaterializerWithType("EnumerateAsElementType", new Type[] { type }, new Expression[] { key });
this.annotations.Add(key, annotation);
}
else
{
key = Expression.Call(call.Method, expression2, expression5);
this.annotations.Add(key, annotation);
}
}
if (key == null)
{
key = base.VisitMethodCall(call);
}
return(key);
}
internal void AppendPropertyToPath(PropertyInfo pi, Type convertedSourceType, DataServiceContext context)
{
bool flag = ClientTypeUtil.TypeOrElementTypeIsEntity(pi.PropertyType);
string name = (convertedSourceType == null) ? null : System.Data.Services.Client.UriHelper.GetEntityTypeNameForUriAndValidateMaxProtocolVersion(convertedSourceType, context, ref this.uriVersion);
if (flag)
{
if (convertedSourceType != null)
{
this.AppendToExpandPath(name);
}
this.AppendToExpandPath(pi.Name);
}
StringBuilder sb = null;
if (convertedSourceType != null)
{
this.AppendToProjectionPath(name, false);
}
sb = this.AppendToProjectionPath(pi.Name, false);
if (flag)
{
AddEntireEntityMarker(sb);
}
}
internal override Expression VisitMemberAccess(MemberExpression m)
{
Debug.Assert(m != null, "m != null");
this.leafExpressionIsMemberAccess = true;
// Only allowed to project entities
if (!ClientTypeUtil.TypeOrElementTypeIsEntity(m.Expression.Type) ||
IsCollectionProducingExpression(m.Expression))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, m.ToString()));
}
PropertyInfo pi;
Expression boundTarget;
if (ResourceBinder.PatternRules.MatchNonPrivateReadableProperty(m, out pi, out boundTarget))
{
Expression e = base.VisitMemberAccess(m);
Type convertedType;
ResourceBinder.StripTo <Expression>(m.Expression, out convertedType);
this.builder.AppendPropertyToPath(pi, convertedType, this.context);
this.leafExpressionIsMemberAccess = false;
return(e);
}
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, m.ToString()));
}
/// <summary>
/// Determine if the specified type is an DataServiceCollection.
/// </summary>
/// <remarks>
/// If there a generic class in the inheritance hierarchy of the type, that has a single
/// entity type paramenter T, and is assignable to DataServiceCollection(Of T), then
/// the type is an DataServiceCollection.
/// </remarks>
/// <param name="collectionType">An object type specifier.</param>
/// <param name="model">The client model.</param>
/// <returns>true if the type is an DataServiceCollection; otherwise false.</returns>
internal static bool IsDataServiceCollection(Type collectionType, ClientEdmModel model)
{
Debug.Assert(collectionType != null, "Argument 'collectionType' cannot be null.");
metadataCacheLock.EnterReadLock();
try
{
object resultAsObject;
if (knownObservableCollectionTypes.TryGetValue(collectionType, out resultAsObject))
{
return(resultAsObject == TrueObject);
}
}
finally
{
metadataCacheLock.ExitReadLock();
}
Type type = collectionType;
bool result = false;
while (type != null)
{
if (type.IsGenericType())
{
// Is there a generic class in the inheritance hierarchy, that has a single
// entity type paramenter T, and is assignable to DataServiceCollection<T>
Type[] parms = type.GetGenericArguments();
if (parms != null && parms.Length == 1 && ClientTypeUtil.TypeOrElementTypeIsEntity(parms[0]))
{
// if ObservableCollection is not available dataServiceCollection will be null
Type dataServiceCollection = WebUtil.GetDataServiceCollectionOfT(parms);
if (dataServiceCollection != null && dataServiceCollection.IsAssignableFrom(type))
{
result = true;
break;
}
}
}
type = type.GetBaseType();
}
metadataCacheLock.EnterWriteLock();
try
{
if (!knownObservableCollectionTypes.ContainsKey(collectionType))
{
knownObservableCollectionTypes[collectionType] = result ? TrueObject : FalseObject;
}
}
finally
{
metadataCacheLock.ExitWriteLock();
}
return(result);
}
internal override Expression VisitTypeIs(TypeBinaryExpression b)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(b.Expression.Type) || ProjectionAnalyzer.IsCollectionProducingExpression(b.Expression))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, b.ToString()));
}
return(base.VisitTypeIs(b));
}
internal override Expression VisitConstant(ConstantExpression c)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(c.Type))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, c.ToString()));
}
return(base.VisitConstant(c));
}
internal override NewExpression VisitNew(NewExpression nex)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(nex.Type) && !ResourceBinder.PatternRules.MatchNewDataServiceCollectionOfT(nex))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, nex.ToString()));
}
return(base.VisitNew(nex));
}
internal override Expression VisitMemberInit(MemberInitExpression init)
{
if (!ClientTypeUtil.TypeOrElementTypeIsEntity(init.Type))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, init.ToString()));
}
ProjectionAnalyzer.Analyze(init, this.box, this.context);
return(init);
}
public void IFTypeProperty_HasKeyAttribute_TypeIsEntity()
{
//Arrange
Type person = typeof(Person);
//Act
bool actualResult = ClientTypeUtil.TypeOrElementTypeIsEntity(person);
//Assert
Assert.True(actualResult);
}
public void IFTypeProperty_HasNoKeyAttribute_TypeIsNotEntity()
{
//Arrange
Type student = typeof(Student);
//Act
bool actualResult = ClientTypeUtil.TypeOrElementTypeIsEntity(student);
//Assert
Assert.False(actualResult);
}
public void IFTypeProperty_HasKeyAttributeAndOneProperty_TypeIsEntityAndDoesNotThrowException()
{
//Arrange
Type car = typeof(Car);
//Act
bool actualResult = ClientTypeUtil.TypeOrElementTypeIsEntity(car);
//Assert
Assert.True(actualResult);
}
internal override Expression VisitBinary(BinaryExpression b)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(b.Left.Type) ||
ClientTypeUtil.TypeOrElementTypeIsEntity(b.Right.Type) ||
IsCollectionProducingExpression(b.Left) || IsCollectionProducingExpression(b.Right))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, b.ToString()));
}
return(base.VisitBinary(b));
}
internal override Expression VisitInvocation(InvocationExpression iv)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(iv.Expression.Type) ||
IsCollectionProducingExpression(iv.Expression) ||
iv.Arguments.Any(a => ClientTypeUtil.TypeOrElementTypeIsEntity(a.Type) || IsCollectionProducingExpression(a)))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, iv.ToString()));
}
return(base.VisitInvocation(iv));
}
internal override Expression VisitMemberInit(MemberInitExpression init)
{
if (!ClientTypeUtil.TypeOrElementTypeIsEntity(init.Type))
{
// MemberInit to a complex type is not supported on entity types.
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, init.ToString()));
}
ProjectionAnalyzer.Analyze(init, this.builder, this.context);
return(init);
}
private static void Analyze(MemberInitExpression mie, PathBox pb, DataServiceContext context)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(mie.Type))
{
EntityProjectionAnalyzer.Analyze(mie, pb, context);
}
else
{
NonEntityProjectionAnalyzer.Analyze(mie, pb, context);
}
}
internal override NewExpression VisitNew(NewExpression nex)
{
// Allow creation of DataServiceCollection<T> objects in projections, stop others that project entities
if (ClientTypeUtil.TypeOrElementTypeIsEntity(nex.Type) &&
!ResourceBinder.PatternRules.MatchNewDataServiceCollectionOfT(nex))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, nex.ToString()));
}
return(base.VisitNew(nex));
}
internal override Expression VisitParameter(ParameterExpression p)
{
if (ClientTypeUtil.TypeOrElementTypeIsEntity(p.Type))
{
if (p != this.box.ParamExpressionInScope)
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, p.ToString()));
}
this.box.StartNewPath();
}
return(p);
}
internal void EnterLambdaScope(LambdaExpression lambda, Expression entry, Expression expectedType)
{
ParameterExpression item = lambda.Parameters[0];
Type type = lambda.Body.Type;
bool flag = ClientTypeUtil.TypeOrElementTypeIsEntity(type);
this.entityInScope.Push(flag);
this.parameterExpressions.Push(item);
this.parameterExpressionTypes.Push(expectedType);
this.parameterEntries.Push(entry);
this.parameterProjectionTypes.Push(type);
}
internal static string GetEntityTypeNameForUriAndValidateMaxProtocolVersion(Type type, DataServiceContext context, ref Version uriVersion)
{
if (context.MaxProtocolVersionAsVersion < Util.DataServiceVersion3)
{
throw new NotSupportedException(Strings.ALinq_TypeAsNotSupportedForMaxDataServiceVersionLessThan3);
}
if (!ClientTypeUtil.TypeOrElementTypeIsEntity(type))
{
throw new NotSupportedException(Strings.ALinq_TypeAsArgumentNotEntityType(type.FullName));
}
WebUtil.RaiseVersion(ref uriVersion, Util.DataServiceVersion3);
return(context.ResolveNameFromType(type) ?? type.FullName);
}
/// <summary>
/// Determine if the specified type is an entity type.
/// </summary>
/// <param name="type">An object type specifier.</param>
/// <param name="model">The client model.</param>
/// <returns>true if the type is an entity type; otherwise false.</returns>
internal static bool IsEntityType(Type type, ClientEdmModel model)
{
Debug.Assert(type != null, "Argument 'type' cannot be null.");
metadataCacheLock.EnterReadLock();
try
{
if (knownNonEntityTypes.Contains(type))
{
return(false);
}
}
finally
{
metadataCacheLock.ExitReadLock();
}
bool isEntityType;
try
{
if (BindingEntityInfo.IsDataServiceCollection(type, model))
{
return(false);
}
isEntityType = ClientTypeUtil.TypeOrElementTypeIsEntity(type);
}
catch (InvalidOperationException)
{
isEntityType = false;
}
if (!isEntityType)
{
metadataCacheLock.EnterWriteLock();
try
{
if (!knownNonEntityTypes.Contains(type))
{
knownNonEntityTypes.Add(type);
}
}
finally
{
metadataCacheLock.ExitWriteLock();
}
}
return(isEntityType);
}
internal override Expression VisitConditional(ConditionalExpression c)
{
ResourceBinder.PatternRules.MatchNullCheckResult result = ResourceBinder.PatternRules.MatchNullCheck(this.box.ParamExpressionInScope, c);
if (result.Match)
{
this.Visit(result.AssignExpression);
return(c);
}
if (((ClientTypeUtil.TypeOrElementTypeIsEntity(c.Test.Type) || ClientTypeUtil.TypeOrElementTypeIsEntity(c.IfTrue.Type)) || (ClientTypeUtil.TypeOrElementTypeIsEntity(c.IfFalse.Type) || ProjectionAnalyzer.IsCollectionProducingExpression(c.Test))) || (ProjectionAnalyzer.IsCollectionProducingExpression(c.IfTrue) || ProjectionAnalyzer.IsCollectionProducingExpression(c.IfFalse)))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, c.ToString()));
}
return(base.VisitConditional(c));
}
internal override Expression VisitInvocation(InvocationExpression iv)
{
if ((ClientTypeUtil.TypeOrElementTypeIsEntity(iv.Expression.Type) || ProjectionAnalyzer.IsCollectionProducingExpression(iv.Expression)) || iv.Arguments.Any <Expression>(delegate(Expression a) {
if (!ClientTypeUtil.TypeOrElementTypeIsEntity(a.Type))
{
return(ProjectionAnalyzer.IsCollectionProducingExpression(a));
}
return(true);
}))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, iv.ToString()));
}
return(base.VisitInvocation(iv));
}