private static Expression HandleGroup(
EntityQueryModelVisitor entityQueryModelVisitor,
GroupResultOperator groupResultOperator,
QueryModel queryModel)
{
var keySelector
= entityQueryModelVisitor
.ReplaceClauseReferences(
groupResultOperator.KeySelector,
queryModel.MainFromClause);
var elementSelector
= entityQueryModelVisitor
.ReplaceClauseReferences(
groupResultOperator.ElementSelector,
queryModel.MainFromClause);
return(Expression.Call(
entityQueryModelVisitor.LinqOperatorProvider.GroupBy
.MakeGenericMethod(
typeof(QuerySourceScope),
groupResultOperator.KeySelector.Type,
groupResultOperator.ElementSelector.Type),
entityQueryModelVisitor.CreateScope(
entityQueryModelVisitor.Expression,
entityQueryModelVisitor.StreamedSequenceInfo.ResultItemType,
queryModel.MainFromClause),
Expression.Lambda(keySelector, EntityQueryModelVisitor.QuerySourceScopeParameter),
Expression.Lambda(elementSelector, EntityQueryModelVisitor.QuerySourceScopeParameter)));
}
private static Expression HandleDefaultIfEmpty(
EntityQueryModelVisitor entityQueryModelVisitor,
DefaultIfEmptyResultOperator defaultIfEmptyResultOperator,
QueryModel queryModel)
{
if (defaultIfEmptyResultOperator.OptionalDefaultValue == null)
{
return(Expression.Call(
entityQueryModelVisitor.LinqOperatorProvider.DefaultIfEmpty
.MakeGenericMethod(entityQueryModelVisitor.StreamedSequenceInfo.ResultItemType),
entityQueryModelVisitor.Expression));
}
var optionalDefaultValue
= entityQueryModelVisitor
.ReplaceClauseReferences(
defaultIfEmptyResultOperator.OptionalDefaultValue,
queryModel.MainFromClause);
return(Expression.Call(
entityQueryModelVisitor.LinqOperatorProvider.DefaultIfEmptyArg
.MakeGenericMethod(typeof(QuerySourceScope)),
entityQueryModelVisitor.CreateScope(
entityQueryModelVisitor.Expression,
entityQueryModelVisitor.StreamedSequenceInfo.ResultItemType,
queryModel.MainFromClause),
optionalDefaultValue));
}
private static Expression HandleAll(
EntityQueryModelVisitor entityQueryModelVisitor,
AllResultOperator allResultOperator,
QueryModel queryModel)
{
var predicate
= entityQueryModelVisitor
.ReplaceClauseReferences(
allResultOperator.Predicate,
queryModel.MainFromClause);
return(Expression.Call(
_all.MakeGenericMethod(typeof(QuerySourceScope)),
entityQueryModelVisitor.CreateScope(
entityQueryModelVisitor.Expression,
entityQueryModelVisitor.StreamedSequenceInfo.ResultItemType,
queryModel.MainFromClause),
Expression.Lambda(predicate, EntityQueryModelVisitor.QuerySourceScopeParameter)));
}
private static Expression HandleAll(
EntityQueryModelVisitor entityQueryModelVisitor,
AllResultOperator allResultOperator,
QueryModel queryModel)
{
var predicate
= entityQueryModelVisitor
.ReplaceClauseReferences(
allResultOperator.Predicate,
queryModel.MainFromClause);
return(CallWithPossibleCancellationToken(
entityQueryModelVisitor.LinqOperatorProvider.All
.MakeGenericMethod(typeof(QueryResultScope)),
entityQueryModelVisitor.CreateScope(
entityQueryModelVisitor.Expression,
entityQueryModelVisitor.StreamedSequenceInfo.ResultItemType,
queryModel.MainFromClause),
Expression.Lambda(predicate, EntityQueryModelVisitor.QueryResultScopeParameter)));
}
