/// <summary>
/// Realiza a pesquisa no indice associado com o nome da propriedade.
/// </summary>
/// <param name="propertyName"></param>
/// <param name="indexType"></param>
/// <param name="key"></param>
/// <returns></returns>
private IEnumerable <T> Search2(string propertyName, ObservableCollectionIndexType indexType, object key)
{
Dictionary <ObservableCollectionIndexType, IObservableCollectionIndex <T> > values = null;
if (_indexes == null)
{
throw new IndexNotFoundException(propertyName);
}
lock (_indexes)
if (!_indexes.TryGetValue(propertyName, out values) || values.Count == 0 || (indexType != ObservableCollectionIndexType.Any && !values.ContainsKey(indexType)))
{
throw new IndexNotFoundException(propertyName);
}
IObservableCollectionIndex <T> index = null;
if (indexType == ObservableCollectionIndexType.Any)
{
index = values.Values.FirstOrDefault();
}
else
{
index = values[indexType];
}
return(index[key]);
}
/// <summary>
/// Reseta o indice.
/// </summary>
/// <param name="propertyName">Nome da propriedade do indice.</param>
/// <param name="indexType">Tipo do indice.</param>
public void ResetIndex(string propertyName, ObservableCollectionIndexType indexType)
{
Dictionary <ObservableCollectionIndexType, IObservableCollectionIndex <T> > values = null;
if (_indexes == null)
{
throw new IndexNotFoundException(propertyName);
}
lock (_indexes)
if (!_indexes.TryGetValue(propertyName, out values) || values.Count == 0 || (indexType != ObservableCollectionIndexType.Any && !values.ContainsKey(indexType)))
{
throw new IndexNotFoundException(propertyName);
}
IObservableCollectionIndex <T> index = null;
if (indexType == ObservableCollectionIndexType.Any)
{
index = values.Values.FirstOrDefault();
}
else
{
index = values[indexType];
}
index.Reset();
}
public void CreateIndex <PropertyType>(System.Linq.Expressions.Expression <Func <T, PropertyType> > property, ObservableCollectionIndexType type, IComparer <PropertyType> comparer)
{
property.Require("property").NotNull();
var propertyInfo = property.GetMember() as System.Reflection.PropertyInfo;
if (propertyInfo == null)
{
throw new InvalidOperationException("Invalid property");
}
var indexName = propertyInfo.Name;
if (_indexes != null)
{
lock (_indexes)
{
Dictionary <ObservableCollectionIndexType, IObservableCollectionIndex <T> > values = null;
if (_indexes.TryGetValue(indexName, out values) && values.ContainsKey(type))
{
return;
}
}
}
IObservableCollectionIndex <T> index = null;
var propertyGetter = property.Compile();
var getter = new Func <T, object>(f => propertyGetter(f));
if (type == ObservableCollectionIndexType.Sorted || type == ObservableCollectionIndexType.Hash)
{
index = new ObservableCollectionSortedIndex <T>(indexName, this, new string[] {
property.Name
}, getter, Comparer <PropertyType> .Default);
}
if (_indexes == null)
{
_indexes = new Dictionary <string, Dictionary <ObservableCollectionIndexType, IObservableCollectionIndex <T> > >();
}
lock (_indexes)
{
Dictionary <ObservableCollectionIndexType, IObservableCollectionIndex <T> > values = null;
if (!_indexes.TryGetValue(indexName, out values))
{
values = new Dictionary <ObservableCollectionIndexType, IObservableCollectionIndex <T> >();
_indexes.Add(indexName, values);
}
if (!values.ContainsKey(type))
{
values.Add(type, index);
}
}
}
