static IEnumerable <TItem> ApplyToAll <TItem>(this IEnumerable <TItem> items, Func <Type, string, object> getArguments)
{
if (ArgumentReader.TryReadId(getArguments, out var values))
{
var predicate = FuncBuilder <TItem> .BuildPredicate("Id", Comparison.In, values);
items = items.Where(predicate);
}
foreach (var where in ArgumentReader.ReadWhere(getArguments))
{
var predicate = FuncBuilder <TItem> .BuildPredicate(where);
items = items.Where(predicate);
}
items = Order(items, getArguments);
if (ArgumentReader.TryReadSkip(getArguments, out var skip))
{
items = items.Skip(skip);
}
if (ArgumentReader.TryReadTake(getArguments, out var take))
{
items = items.Take(take);
}
return(items);
}
static IEnumerable <TItem> ApplyToAll <TItem>(this IEnumerable <TItem> items, bool hasId, Func <Type, string, object?> getArguments)
{
if (hasId)
{
if (ArgumentReader.TryReadIds(getArguments, out var values))
{
var predicate = ExpressionBuilder <TItem> .BuildPredicate("Id", Comparison.In, values);
items = items.Where(predicate.Compile());
}
}
if (ArgumentReader.TryReadWhere(getArguments, out var wheres))
{
var predicate = ExpressionBuilder <TItem> .BuildPredicate(wheres);
items = items.Where(predicate.Compile());
}
items = Order(items, getArguments);
if (ArgumentReader.TryReadSkip(getArguments, out var skip))
{
items = items.Skip(skip);
}
if (ArgumentReader.TryReadTake(getArguments, out var take))
{
items = items.Take(take);
}
return(items);
}
static IQueryable <TItem> ApplyToAll <TItem>(this IQueryable <TItem> queryable, Func <Type, string, object> getArguments)
{
if (ArgumentReader.TryReadId(getArguments, out var values))
{
var predicate = ExpressionBuilder <TItem> .BuildPredicate("ID", Comparison.In, values);
queryable = queryable.Where(predicate);
}
foreach (var where in ArgumentReader.ReadWhere(getArguments))
{
var predicate = ExpressionBuilder <TItem> .BuildPredicate(where);
queryable = queryable.Where(predicate);
}
queryable = Order(queryable, getArguments);
if (ArgumentReader.TryReadSkip(getArguments, out var skip))
{
queryable = queryable.Skip(skip);
}
if (ArgumentReader.TryReadTake(getArguments, out var take))
{
queryable = queryable.Take(take);
}
return(queryable);
}
public static IQueryable <TItem> ApplyGraphQlArguments <TItem>(
this IQueryable <TItem> queryable,
IResolveFieldContext context,
List <string>?keyNames,
bool applyOrder)
where TItem : class
{
Guard.AgainstNull(nameof(queryable), queryable);
Guard.AgainstNull(nameof(context), context);
object?GetArguments(Type type, string x) => context.GetArgument(type, x);
if (keyNames != null)
{
if (ArgumentReader.TryReadIds(GetArguments, out var values))
{
var keyName = GetKeyName(keyNames);
var predicate = ExpressionBuilder <TItem> .BuildPredicate(keyName, Comparison.In, values);
queryable = queryable.Where(predicate);
}
if (ArgumentReader.TryReadId(GetArguments, out var value))
{
var keyName = GetKeyName(keyNames);
var predicate = ExpressionBuilder <TItem> .BuildPredicate(keyName, Comparison.Equal, new[] { value });
queryable = queryable.Where(predicate);
}
}
if (ArgumentReader.TryReadWhere(GetArguments, out var wheres))
{
var predicate = ExpressionBuilder <TItem> .BuildPredicate(wheres);
queryable = queryable.Where(predicate);
}
if (applyOrder)
{
queryable = Order(queryable, GetArguments);
if (ArgumentReader.TryReadSkip(GetArguments, out var skip))
{
queryable = queryable.Skip(skip);
}
if (ArgumentReader.TryReadTake(GetArguments, out var take))
{
queryable = queryable.Take(take);
}
}
return(queryable);
}
static IQueryable <TItem> ApplyToAll <TItem>(this IQueryable <TItem> queryable, Func <Type, string, object?> getArguments, List <string>?keyNames)
where TItem : class
{
if (keyNames != null)
{
if (ArgumentReader.TryReadIds(getArguments, out var values))
{
var keyName = GetKeyName(keyNames);
var predicate = ExpressionBuilder <TItem> .BuildPredicate(keyName, Comparison.In, values);
queryable = queryable.Where(predicate);
}
if (ArgumentReader.TryReadId(getArguments, out var value))
{
var keyName = GetKeyName(keyNames);
var predicate = ExpressionBuilder <TItem> .BuildPredicate(keyName, Comparison.Equal, new[] { value });
queryable = queryable.Where(predicate);
}
}
if (ArgumentReader.TryReadWhere(getArguments, out var wheres))
{
var predicate = ExpressionBuilder <TItem> .BuildPredicate(wheres);
queryable = queryable.Where(predicate);
}
queryable = Order(queryable, getArguments);
if (ArgumentReader.TryReadSkip(getArguments, out var skip))
{
queryable = queryable.Skip(skip);
}
if (ArgumentReader.TryReadTake(getArguments, out var take))
{
queryable = queryable.Take(take);
}
return(queryable);
}