/// <summary>
/// Recupera o item do cache.
/// </summary>
/// <param name="type"></param>
/// <param name="creatorLoader"></param>
/// <returns>Posição do mapeamento no vetor</returns>
public static TypeBindStrategy GetItem(Type type, Func <Type, IQueryResultObjectCreator> creatorLoader)
{
type.Require("type").NotNull();
lock (_objLock)
{
if (_items == null)
{
_itemsAccessCount = new int[_size];
_itemsTypeNames = new string[_size];
_items = new TypeBindStrategy[_size];
for (int i = 0; i < _itemsAccessCount.Length; i++)
{
_itemsAccessCount[i] = -1;
}
}
int pos = -1;
for (int i = 0; i < _itemsTypeNames.Length; i++)
{
if (_itemsTypeNames[i] != null && _itemsTypeNames[i] == type.FullName)
{
_itemsAccessCount[i]++;
pos = i;
}
else
{
if (_itemsAccessCount[i] > int.MinValue)
{
_itemsAccessCount[i]--;
}
}
}
if (pos >= 0)
{
return(_items[pos]);
}
pos = 0;
for (int i = 1; i < _itemsAccessCount.Length; i++)
{
if (_itemsAccessCount[i] < _itemsAccessCount[pos])
{
pos = i;
}
}
if (pos != -1 && _items[pos] != null)
{
System.Diagnostics.Debug.WriteLine("TYPE.BINDING.STRATEGY.CACHE FREE POSITION: " + pos + "; TYPE: " + _items[pos].Type.FullName);
_items[pos] = null;
}
var instance = new TypeBindStrategy(type, creatorLoader == null ? null : creatorLoader(type));
_itemsAccessCount[pos] = 10;
_itemsTypeNames[pos] = type.FullName;
_items[pos] = instance;
return(instance);
}
}
/// <summary>
/// Construtor padrão.
/// </summary>
/// <param name="typeBindStrategy">Instancia da estratégia de vinculação associada.</param>
/// <param name="descriptor"></param>
public TypeBindRecordDescriptorSchema(TypeBindStrategy typeBindStrategy, Record.RecordDescriptor descriptor)
{
_properties = new List <Property>();
var typeProperties = typeBindStrategy.Type.GetProperties(System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);
var stringComparer = StringComparer.InvariantCultureIgnoreCase;
foreach (var field in descriptor)
{
var prop = typeProperties.Where(f => f.CanWrite && stringComparer.Equals(f.Name, field.Name)).FirstOrDefault();
if (prop != null)
{
if (_properties.Exists(f => stringComparer.Equals(f.FieldName, field.Name)))
{
throw new TypeBindStrategyException(ResourceMessageFormatter.Create(() => Properties.Resources.TypeBindStrategy_DuplicateFieldName, field.Name, typeBindStrategy.Type.FullName, string.Join(", ", descriptor.Select(f => f.Name).ToArray())).Format());
}
var converter = System.ComponentModel.TypeDescriptor.GetConverter(prop.PropertyType);
_properties.Add(new Property(field.Name, prop, converter));
}
}
}
public MultiQueryable Add <TModel>(Queryable query, QueryCallBack <TModel> callback, QueryFailedCallBack failedCallBack, IQueryResultBindStrategy bindStrategy, IQueryResultObjectCreator objectCreator)
{
_queries.Add(query);
if (bindStrategy == null && objectCreator == null)
{
var ts = TypeBindStrategyCache.GetItem(typeof(TModel), t => new QueryResultObjectCreator(t));
objectCreator = ts;
bindStrategy = ts;
}
if (bindStrategy == null)
{
bindStrategy = new TypeBindStrategy(typeof(TModel), objectCreator);
}
if (callback != null)
{
QueryCallBackWrapper <TModel> wrapper = new QueryCallBackWrapper <TModel>();
wrapper.QueryCallBack = callback;
wrapper.QueryFailedCallBack = failedCallBack;
wrapper.BindStrategy = bindStrategy;
wrapper.ObjectCreator = objectCreator;
_callbacks.Add(_queries.Count - 1, wrapper);
}
return(this);
}
