internal override Expression VisitMethodCall(MethodCallExpression m)
{
Expression expressionBeforeNormalization = this.GetExpressionBeforeNormalization(m);
if (expressionBeforeNormalization != m)
{
return(this.Visit(expressionBeforeNormalization));
}
if (this.pathBuilder.CurrentIsEntity)
{
if (m.Method.Name == "Select")
{
return(this.RebindMethodCallForMemberSelect(m));
}
if (m.Method.Name == "ToList")
{
return(this.RebindMethodCallForMemberToList(m));
}
return(base.VisitMethodCall(m));
}
if (ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m))
{
return(this.RebindMethodCallForNewSequence(m));
}
return(base.VisitMethodCall(m));
}
private Expression RebindMethodCallForNewSequence(MethodCallExpression call)
{
Debug.Assert(call != null, "call != null");
Debug.Assert(ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(call), "ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(call)");
Debug.Assert(call.Object == null, "call.Object == null -- otherwise this isn't the supported Select or ToList methods");
Expression result = null;
if (call.Method.Name == "Select")
{
Debug.Assert(call.Arguments.Count == 2, "call.Arguments.Count == 2 -- otherwise this isn't the argument we expected");
Expression parameterSource = this.Visit(call.Arguments[0]);
ExpressionAnnotation annotation;
this.annotations.TryGetValue(parameterSource, out annotation);
if (annotation != null)
{
Expression selectorExpression = this.Visit(call.Arguments[1]);
Type returnElementType = call.Method.ReturnType.GetGenericArguments()[0];
result = CallMaterializer(
"ProjectionSelect",
this.materializerExpression,
this.pathBuilder.ParameterEntryInScope,
this.pathBuilder.ExpectedParamTypeInScope,
Expression.Constant(returnElementType, typeof(Type)),
Expression.Constant(annotation.Segment.StartPath, typeof(object)),
selectorExpression);
this.annotations.Add(result, annotation);
result = CallMaterializerWithType(
"EnumerateAsElementType",
new Type[] { returnElementType },
result);
this.annotations.Add(result, annotation);
}
}
else
{
Debug.Assert(call.Method.Name == "ToList", "call.Method.Name == 'ToList'");
Expression source = this.Visit(call.Arguments[0]);
ExpressionAnnotation annotation;
if (this.annotations.TryGetValue(source, out annotation))
{
result = this.TypedEnumerableToList(source, call.Type);
this.annotations.Add(result, annotation);
}
}
if (result == null)
{
result = base.VisitMethodCall(call);
}
return(result);
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
if (((m.Object != null) && ProjectionAnalyzer.IsDisallowedExpressionForMethodCall(m.Object, this.context.MaxProtocolVersion)) || m.Arguments.Any <Expression>(a => ProjectionAnalyzer.IsDisallowedExpressionForMethodCall(a, this.context.MaxProtocolVersion)))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
ProjectionAnalyzer.CheckChainedSequence(m, this.type);
if (!ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m) && (((m.Object != null) ? ClientTypeUtil.TypeOrElementTypeIsEntity(m.Object.Type) : false) || m.Arguments.Any <Expression>(a => ClientTypeUtil.TypeOrElementTypeIsEntity(a.Type))))
{
throw new NotSupportedException(System.Data.Services.Client.Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
return(base.VisitMethodCall(m));
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
if ((m.Object != null && IsDisallowedExpressionForMethodCall(m.Object)) ||
m.Arguments.Any(a => IsDisallowedExpressionForMethodCall(a)))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
if (ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m))
{
CheckChainedSequence(m, this.type);
return(base.VisitMethodCall(m));
}
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, m.ToString()));
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
Debug.Assert(m != null, "m != null");
Expression original = this.GetExpressionBeforeNormalization(m);
if (original != m)
{
return(this.Visit(original));
}
Expression result;
if (this.pathBuilder.CurrentIsEntity)
{
Debug.Assert(
ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m) || ResourceBinder.PatternRules.MatchReferenceEquals(m),
"ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m) || ResourceBinder.PatternRules.MatchReferenceEquals(m) -- otherwise ProjectionAnalyzer should have blocked this for entities");
if (m.Method.Name == "Select")
{
result = this.RebindMethodCallForMemberSelect(m);
}
else if (m.Method.Name == "ToList")
{
result = this.RebindMethodCallForMemberToList(m);
}
else
{
Debug.Assert(m.Method.Name == "ReferenceEquals", "We don't know how to handle this method, ProjectionAnalyzer updated?");
result = base.VisitMethodCall(m);
}
}
else
{
if (ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m))
{
result = this.RebindMethodCallForNewSequence(m);
}
else
{
result = base.VisitMethodCall(m);
}
}
return(result);
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
if ((m.Object != null && IsDisallowedExpressionForMethodCall(m.Object)) ||
m.Arguments.Any(a => IsDisallowedExpressionForMethodCall(a)))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
if (ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m))
{
CheckChainedSequence(m, this.type);
// allow selects for following pattern:
// Orders = c.Orders.Select(o=> new NarrowOrder {...}).ToList();
return(base.VisitMethodCall(m));
}
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, m.ToString()));
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
// We throw NotSupportedException when IsDisallowedExceptionForMethodCall() is true
// or we have a method call on a non-entity type, for example c.MyCollectionComplexProperty.Select(...)
if ((m.Object != null && (IsDisallowedExpressionForMethodCall(m.Object, this.context.Model) || !ClientTypeUtil.TypeOrElementTypeIsEntity(m.Object.Type))) ||
m.Arguments.Any(a => IsDisallowedExpressionForMethodCall(a, this.context.Model)) ||
(m.Object == null && !ClientTypeUtil.TypeOrElementTypeIsEntity(m.Arguments[0].Type)))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
if (ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m))
{
CheckChainedSequence(m, this.type);
// allow selects for following pattern:
// Orders = c.Orders.Select(o=> new NarrowOrder {...}).ToList();
return(base.VisitMethodCall(m));
}
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjectionToEntity(this.type, m.ToString()));
}
internal override Expression VisitMethodCall(MethodCallExpression m)
{
if ((m.Object != null && IsDisallowedExpressionForMethodCall(m.Object, this.context.Model)) ||
m.Arguments.Any(a => IsDisallowedExpressionForMethodCall(a, this.context.Model)))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
CheckChainedSequence(m, this.type);
if (ProjectionAnalyzer.IsMethodCallAllowedEntitySequence(m))
{
// allow IEnum.Select and IEnum.ToList even if entity type.
return(base.VisitMethodCall(m));
}
if ((m.Object != null ? ClientTypeUtil.TypeOrElementTypeIsEntity(m.Object.Type) : false) ||
m.Arguments.Any(a => ClientTypeUtil.TypeOrElementTypeIsEntity(a.Type)))
{
throw new NotSupportedException(Strings.ALinq_ExpressionNotSupportedInProjection(this.type, m.ToString()));
}
return(base.VisitMethodCall(m));
}