using System.Collections.Generic;

namespace Simple.Data.QueryPolyfills

{

class ObjectValueResolver : ValueResolver

{

private readonly ObjectReference _reference;

protected internal ObjectValueResolver(ObjectReference reference)

{

_reference = reference;

}

public override void CopyValue(IDictionary<string, object> source, IDictionary<string, object> target,

IEnumerable<IDictionary<string, object>> sourceAggregationValues = null)

{

target[_reference.GetAliasOrName()] = GetValue(source);

}

public override object GetValue(IDictionary<string, object> source, IEnumerable<IDictionary<string, object>> sourceAggregationValues = null)

{

if (source == null) return null;

if (_reference.HasOwner() && source.ContainsKey(_reference.GetOwner().GetName()))

{

var childDictionary = source[_reference.GetOwner().GetName()] as IDictionary<string, object>;

return GetValue(childDictionary);

}

if (source.ContainsKey(_reference.GetName())) return source[_reference.GetName()];

return null;

}

}

}