protected override Expression VisitMethodCall(MethodCallExpression methodCallExpression)
{
Check.NotNull(methodCallExpression, nameof(methodCallExpression));
MethodCallExpression newExpression = null;
Expression firstArgument = null;
if (methodCallExpression.Method.IsGenericMethod &&
ReferenceEquals(
methodCallExpression.Method.GetGenericMethodDefinition(),
EntityQueryModelVisitor.PropertyMethodInfo))
{
var newArguments
= VisitAndConvert(methodCallExpression.Arguments, "VisitMethodCall");
if (newArguments[0].Type == typeof(ValueBuffer))
{
firstArgument = newArguments[0];
// Compensate for ValueBuffer being a struct, and hence not compatible with Object method
newExpression
= Expression.Call(
methodCallExpression.Method,
Expression.Convert(newArguments[0], typeof(object)),
newArguments[1]);
}
}
if (newExpression == null)
{
newExpression
= (MethodCallExpression)base.VisitMethodCall(methodCallExpression);
}
firstArgument = firstArgument ?? newExpression.Arguments.FirstOrDefault();
if (newExpression != methodCallExpression &&
firstArgument?.Type == typeof(ValueBuffer))
{
return
(_queryModelVisitor
.BindMethodCallToValueBuffer(methodCallExpression, firstArgument)
?? newExpression);
}
return(_queryModelVisitor
.BindMethodCallExpression(
methodCallExpression,
(property, _) => Expression.Call(
_getValueMethodInfo.MakeGenericMethod(newExpression.Method.GetGenericArguments()[0]),
EntityQueryModelVisitor.QueryContextParameter,
newExpression.Arguments[0],
Expression.Constant(property)))
?? newExpression);
}
protected override Expression VisitMethodCallExpression(MethodCallExpression methodCallExpression)
{
MethodCallExpression newExpression = null;
if (methodCallExpression.Method.IsGenericMethod &&
ReferenceEquals(
methodCallExpression.Method.GetGenericMethodDefinition(),
QueryExtensions.PropertyMethodInfo))
{
var newArguments
= VisitAndConvert(methodCallExpression.Arguments, "VisitMethodCallExpression");
if (newArguments[0].Type == typeof(ValueBuffer))
{
// Compensate for ValueBuffer being a struct, and hence not compatible with Object method
newExpression
= Expression.Call(
QueryExtensions.ValueBufferPropertyMethodInfo
.MakeGenericMethod(methodCallExpression.Method.GetGenericArguments()),
newArguments);
}
}
if (newExpression == null)
{
newExpression
= (MethodCallExpression)base.VisitMethodCallExpression(methodCallExpression);
}
if (newExpression != methodCallExpression &&
newExpression.Arguments.Any() &&
newExpression.Arguments[0].Type == typeof(ValueBuffer))
{
return
(_queryModelVisitor
.BindMethodCallToValueBuffer(methodCallExpression, newExpression.Arguments[0])
?? newExpression);
}
return(_queryModelVisitor
.BindMethodCallExpression(
methodCallExpression,
(property, _) => Expression.Call(
_getValueMethodInfo.MakeGenericMethod(newExpression.Method.GetGenericArguments()[0]),
EntityQueryModelVisitor.QueryContextParameter,
newExpression.Arguments[0],
Expression.Constant(property)))
?? newExpression);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
protected override Expression VisitMethodCall(MethodCallExpression methodCallExpression)
{
MethodCallExpression newExpression = null;
Expression firstArgument = null;
if (methodCallExpression.Method.IsEFPropertyMethod())
{
var newArguments
= VisitAndConvert(
new List <Expression>
{
methodCallExpression.Arguments[0],
methodCallExpression.Arguments[1]
}.AsReadOnly(),
"VisitMethodCall");
if (newArguments[0].Type == typeof(ValueBuffer))
{
firstArgument = newArguments[0];
// Compensate for ValueBuffer being a struct, and hence not compatible with Object method
newExpression
= Expression.Call(
methodCallExpression.Method,
Expression.Convert(newArguments[0], typeof(object)),
newArguments[1]);
}
}
if (newExpression == null)
{
newExpression
= (MethodCallExpression)base.VisitMethodCall(methodCallExpression);
}
firstArgument = firstArgument ?? newExpression.Arguments.FirstOrDefault();
if (newExpression != methodCallExpression &&
firstArgument?.Type == typeof(ValueBuffer))
{
return
(_queryModelVisitor
.BindMethodCallToValueBuffer(methodCallExpression, firstArgument)
?? newExpression);
}
return(_queryModelVisitor
.BindMethodCallExpression <Expression>(
methodCallExpression,
(property, _) =>
{
var propertyType = newExpression.Method.GetGenericArguments()[0];
if (newExpression.Arguments[0] is ConstantExpression maybeConstantExpression)
{
return Expression.Constant(
property.GetGetter().GetClrValue(maybeConstantExpression.Value),
propertyType);
}
if (newExpression.Arguments[0] is MethodCallExpression maybeMethodCallExpression &&
maybeMethodCallExpression.Method.IsGenericMethod &&
maybeMethodCallExpression.Method.GetGenericMethodDefinition()
.Equals(DefaultQueryExpressionVisitor.GetParameterValueMethodInfo) ||
newExpression.Arguments[0].NodeType == ExpressionType.Parameter &&
!property.IsShadowProperty)
{
// The target is a parameter, try and get the value from it directly.
return Expression.Call(
_getValueFromEntityMethodInfo
.MakeGenericMethod(propertyType),
Expression.Constant(property.GetGetter()),
newExpression.Arguments[0]);
}
return Expression.Call(
_getValueMethodInfo.MakeGenericMethod(propertyType),
EntityQueryModelVisitor.QueryContextParameter,
newExpression.Arguments[0],
Expression.Constant(property));
})