/// <summary>
/// Construtor padrão.
/// </summary>
/// <param name="queryable">Consulta associada.</param>
/// <param name="pageSize"></param>
/// <param name="loader"></param>
/// <param name="executeSelect">Referencia do método que será usado para executar a seleção dos dados.</param>
/// <param name="referenceObject"></param>
/// <param name="bindStrategy"></param>
/// <param name="objectCreator"></param>
public QueryableVirtualList(Colosoft.Query.Queryable queryable, int pageSize, VirtualListLoader <T> loader, Colosoft.Query.QueryableExecuterHandler <T> executeSelect, object referenceObject, Colosoft.Query.IQueryResultBindStrategy bindStrategy, Colosoft.Query.IQueryResultObjectCreator objectCreator) : base(pageSize, loader, referenceObject)
{
_queryable = queryable;
_executeSelect = executeSelect;
_bindStrategy = bindStrategy;
_objectCreator = objectCreator;
if (_bindStrategy == null && _objectCreator == null)
{
var ts = Colosoft.Query.TypeBindStrategyCache.GetItem(typeof(T), t => new Colosoft.Query.QueryResultObjectCreator(t));
_objectCreator = ts;
_bindStrategy = ts;
}
if (_bindStrategy == null)
{
_bindStrategy = new Colosoft.Query.TypeBindStrategy(typeof(T), objectCreator);
}
}
/// <summary>
/// Cria a instancia com o suporte para estratégia de vinculação.
/// </summary>
/// <param name="queryable"></param>
/// <param name="countExpression"></param>
/// <param name="bindStrategy"></param>
/// <param name="objectCreator"></param>
/// <param name="castHandler">Instancia do manipulador que vai realizar o cast do item do resultado.</param>
public QueryableVirtualListLoader(Colosoft.Query.Queryable queryable, string countExpression, Colosoft.Query.IQueryResultBindStrategy bindStrategy, Colosoft.Query.IQueryResultObjectCreator objectCreator, Func <object, T> castHandler) : this(queryable, countExpression)
{
_bindStrategy = bindStrategy;
_objectCreator = objectCreator;
_castHandler = castHandler;
}
/// <summary>
/// Processa os resultado da consulta.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="queryable"></param>
/// <param name="uiContext"></param>
/// <param name="args"></param>
/// <param name="bindStrategy"></param>
/// <param name="objectCreator"></param>
/// <returns></returns>
private static IEnumerable <T> ExecuteSelectProcessLazyResult <T>(this Query.Queryable queryable, string uiContext = null, Business.EntityLoaderLazyArgs args = null, Colosoft.Query.IQueryResultBindStrategy bindStrategy = null, Colosoft.Query.IQueryResultObjectCreator objectCreator = null)
{
var method = typeof(Business.IEntityManager).GetMethod("ProcessLazyResult", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public, null, System.Reflection.CallingConventions.Any, new[] {
typeof(Query.Queryable),
typeof(Query.ISourceContext),
typeof(string),
typeof(Business.EntityLoaderLazyArgs)
}, null);
method = method.MakeGenericMethod(typeof(T));
try
{
return((IEnumerable <T>)method.Invoke(Colosoft.Business.EntityManager.Instance, new object[] {
queryable,
queryable.SourceContext,
uiContext,
args
}));
}
catch (System.Reflection.TargetInvocationException ex)
{
throw ex.InnerException;
}
}
public static Collections.VirtualList <TEntity> ToVirtualResultLazy <TEntity>(this Colosoft.Query.Queryable queryable, int pageSize, Collections.VirtualListLoader <TEntity> listLoader, Colosoft.Query.IQueryResultBindStrategy bindStrategy = null, Colosoft.Query.IQueryResultObjectCreator objectCreator = null) where TEntity : class
{
queryable.Require("queryable").NotNull();
var queryable2 = (Colosoft.Query.Queryable)queryable.Clone();
Colosoft.Query.QueryableExecuterHandler <TEntity> executeSelect = null;
if (typeof(Colosoft.Business.IEntity).IsAssignableFrom(typeof(TEntity)))
{
executeSelect = (queryable3, dataSource, bindStragety1, objectCreator1) => queryable3.ExecuteSelectProcessLazyResult <TEntity>(null, null, bindStragety1, objectCreator1);
}
return(new Business.QueryableVirtualList <TEntity>(queryable2, pageSize, listLoader, executeSelect, null, bindStrategy, objectCreator));
}
public static Collections.VirtualList <TEntity> ToVirtualResultLazy <TEntity>(this Colosoft.Query.Queryable queryable, int pageSize = 0, string countExpression = null, string uiContext = null, Colosoft.Query.IQueryResultBindStrategy bindStrategy = null, Colosoft.Query.IQueryResultObjectCreator objectCreator = null) where TEntity : class
{
queryable.Require("queryable").NotNull();
Collections.VirtualListLoader <TEntity> virtualListLoader = null;
Colosoft.Query.QueryableExecuterHandler <TEntity> executeSelect = null;
if (bindStrategy == null && objectCreator == null)
{
var ts = Colosoft.Query.TypeBindStrategyCache.GetItem(typeof(TEntity), t => new Colosoft.Query.QueryResultObjectCreator(t));
objectCreator = ts;
bindStrategy = ts;
}
if (bindStrategy == null)
{
bindStrategy = new Colosoft.Query.TypeBindStrategy(typeof(TEntity), objectCreator);
}
var queryable2 = (Colosoft.Query.Queryable)queryable.Clone();
if (typeof(Colosoft.Business.IEntity).IsAssignableFrom(typeof(TEntity)))
{
virtualListLoader = Colosoft.Business.EntityManager.Instance.GetEntityVirtualListLoader <TEntity>(queryable2, countExpression, true, uiContext, null);
executeSelect = (queryable3, dataSource, bindStrategy1, objectCreator1) => queryable3.ExecuteSelectProcessLazyResult <TEntity>(uiContext, null, bindStrategy1, objectCreator1);
}
else
{
virtualListLoader = new Colosoft.Business.QueryableVirtualListLoader <TEntity>(queryable2, countExpression, bindStrategy, objectCreator, null);
}
return(new Business.QueryableVirtualList <TEntity>(queryable2, pageSize, virtualListLoader, executeSelect, null, bindStrategy, objectCreator));
}
public static Collections.VirtualList <TEntity> ToVirtualResult <TEntity>(this Colosoft.Query.Queryable queryable, Colosoft.Query.IQueryResultBindStrategy bindStrategy = null, Colosoft.Query.IQueryResultObjectCreator objectCreator = null) where TEntity : class
{
return(ToVirtualResult <TEntity>(queryable, 0, null, null, bindStrategy, objectCreator));
}
/// <summary> /// Realiza a carda da entidade com carga tardia dos dados filhos. /// </summary> /// <param name="record">Registro dos dados da entidade.</param> /// <param name="recordKey">Chave do registro.</param> /// <param name="bindStrategy">Estratégia de vinculação dos dados do resultado.</param> /// <param name="objectCreator">Instancia responsável por criar objetos.</param> /// <param name="sourceContext">Contexto de origem dos dados.</param> /// <param name="uiContext">Contexto visual.</param> /// <param name="entityTypeManager">Instancia do gerenciador de tipos de entidades.</param> /// <param name="args">Argumentos que serão usados</param> /// <returns></returns> public abstract IEntity LazyLoad(Colosoft.Query.IRecord record, Query.RecordKey recordKey, Colosoft.Query.IQueryResultBindStrategy bindStrategy, Colosoft.Query.IQueryResultObjectCreator objectCreator, Colosoft.Query.ISourceContext sourceContext, string uiContext, IEntityTypeManager entityTypeManager, EntityLoaderLazyArgs args = null);
