public override Expression Visit(Expression expression)
{
if (expression == null)
{
return(null);
}
if (!(expression is NewExpression ||
expression is MemberInitExpression ||
expression is EntityShaperExpression))
{
// This skips the group parameter from GroupJoin
if (expression is ParameterExpression parameter &&
parameter.Type.IsGenericType &&
parameter.Type.GetGenericTypeDefinition() == typeof(IEnumerable <>))
{
return(parameter);
}
if (_clientEval)
{
if (expression is ConstantExpression)
{
return(expression);
}
if (expression is ParameterExpression parameterExpression)
{
return(Expression.Call(
_getParameterValueMethodInfo.MakeGenericMethod(parameterExpression.Type),
QueryCompilationContext.QueryContextParameter,
Expression.Constant(parameterExpression.Name)));
}
//if (expression is MethodCallExpression methodCallExpression
// && methodCallExpression.Method.Name == "MaterializeCollectionNavigation")
//{
// var result = _queryableMethodTranslatingExpressionVisitor.TranslateSubquery(methodCallExpression.Arguments[0]);
// var navigation = (INavigation)((ConstantExpression)methodCallExpression.Arguments[1]).Value;
// return _selectExpression.AddCollectionProjection(result, navigation);
//}
var translation = _sqlTranslator.Translate(expression);
if (translation == null)
{
return(base.Visit(expression));
}
else
{
return(new ProjectionBindingExpression(
_selectExpression, _selectExpression.AddToProjection(translation), expression.Type));
}
}
else
{
var translation = _sqlTranslator.Translate(expression);
if (translation == null)
{
return(null);
}
_projectionMapping[_projectionMembers.Peek()] = translation;
return(new ProjectionBindingExpression(_selectExpression, _projectionMembers.Peek(), expression.Type));
}
}
return(base.Visit(expression));
}
public override Expression Visit(Expression expression)
{
if (expression == null)
{
return(null);
}
if (expression is NewExpression ||
expression is MemberInitExpression ||
expression is EntityShaperExpression)
{
return(base.Visit(expression));
}
// This skips the group parameter from GroupJoin
if (expression is ParameterExpression parameter &&
parameter.Type.IsGenericType &&
parameter.Type.GetGenericTypeDefinition() == typeof(IEnumerable <>))
{
return(parameter);
}
if (_clientEval)
{
switch (expression)
{
case ConstantExpression _:
return(expression);
case ParameterExpression parameterExpression:
return(Expression.Call(
_getParameterValueMethodInfo.MakeGenericMethod(parameterExpression.Type),
QueryCompilationContext.QueryContextParameter,
Expression.Constant(parameterExpression.Name)));
case MaterializeCollectionNavigationExpression materializeCollectionNavigationExpression:
return(base.Visit(expression));
//return _selectExpression.AddCollectionProjection(
// _queryableMethodTranslatingExpressionVisitor.TranslateSubquery(
// materializeCollectionNavigationExpression.Subquery),
// materializeCollectionNavigationExpression.Navigation, null);
}
var translation = _sqlTranslator.Translate(expression);
if (translation == null)
{
return(base.Visit(expression));
}
return(new ProjectionBindingExpression(
_selectExpression, _selectExpression.AddToProjection(translation), expression.Type));
}
else
{
var translation = _sqlTranslator.Translate(expression);
if (translation == null)
{
return(null);
}
_projectionMapping[_projectionMembers.Peek()] = translation;
return(new ProjectionBindingExpression(_selectExpression, _projectionMembers.Peek(), expression.Type));
}
}