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using System;
using System.Linq;
using FluentNHibernate.MappingModel.Collections;
namespace FluentNHibernate.MappingModel
{
[Serializable]
public class AttributeStore
{
readonly AttributeLayeredValues layeredValues;
public AttributeStore()
{
layeredValues = new AttributeLayeredValues();
}
public object Get(string property)
{
var values = layeredValues[property];
if (!values.Any())
return null;
var topLayer = values.Max(x => x.Key);
return values[topLayer];
}
public void Set(string attribute, int layer, object value)
{
layeredValues[attribute][layer] = value;
}
public bool IsSpecified(string attribute)
{
return layeredValues[attribute].Any();
}
public void CopyTo(AttributeStore theirStore)
{
layeredValues.CopyTo(theirStore.layeredValues);
}
public AttributeStore Clone()
{
var clonedStore = new AttributeStore();
CopyTo(clonedStore);
return clonedStore;
}
public bool Equals(AttributeStore other)
{
if (other == null) return false;
return other.layeredValues.ContentEquals(layeredValues);
}
public override bool Equals(object obj)
{
var typed = obj as AttributeStore;
if (null == typed) return false;
return Equals(typed);
}
public override int GetHashCode()
{
unchecked
{
return ((layeredValues != null ? layeredValues.GetHashCode() : 0) * 397);
}
}
public void Merge(AttributeStore columnAttributes)
{
columnAttributes.layeredValues.CopyTo(layeredValues);
}
}
public static class AttributeStoreExtensions
{
public static T GetOrDefault<T>(this AttributeStore store, string attribute)
{
return (T)(store.Get(attribute) ?? default(T));
}
}
}
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