/// <summary>
/// Recupera o enumerador das entidade com base no resultado preparado.
/// </summary>
/// <param name="prepareResult"></param>
/// <param name="sourceContext"></param>
/// <returns></returns>
private IEnumerator <IEntity> GetEnumerator(PrepareNestedQueriesResult prepareResult, Colosoft.Query.ISourceContext sourceContext)
{
if (prepareResult.Exceptions.Count > 0)
{
throw new AggregateException(prepareResult.Exceptions.FirstOrDefault().Message, prepareResult.Exceptions);
}
foreach (var i in prepareResult.ParentResult)
{
IEntity entity = null;
LazyDataState lazyDataState = new LazyDataState();
prepareResult.EntityLoader.GetLazyData(i, lazyDataState, sourceContext, prepareResult.UiContext, prepareResult.EntityTypeManager, prepareResult.Exceptions);
using (var args = new EntityLoaderCreatorArgs <Model>((Model)i.DataModel, i.RecordKey, i.Children, i.Links, i.References, prepareResult.UiContext, prepareResult.EntityTypeManager))
{
entity = ((EntityLoader <TEntity1, Model>)prepareResult.EntityLoader).EntityCreator(args);
lazyDataState.Entity = entity;
if (entity is IConnectedEntity)
{
((IConnectedEntity)entity).Connect(sourceContext);
}
if (entity is IEntityRecordObserver)
{
((IEntityRecordObserver)entity).RegisterObserver(i.RecordKey);
}
if (entity is ILoadableEntity)
{
((ILoadableEntity)entity).NotifyLoaded();
}
}
i.Dispose();
yield return(entity);
}
}
internal void CreateQueries(Colosoft.Query.Queryable queryable, string parentUidProperty, string uiContext, IEntityTypeManager entityTypeManager, Queue <Exception> exceptions, EntityLoaderExecuteQueryHandler callBack, Colosoft.Query.SubQueryFailedCallBack failedCallBack)
{
var loader = entityTypeManager.GetLoader(LinkEntityType);
var result = new List <EntityLoaderCreatorArgs>();
var query = queryable.BeginSubQuery((sender, e) => {
var bindStrategy = loader.GetBindStrategy();
var objectCreator = loader.GetObjectCreator();
var recordKeyFactory = loader.GetRecordKeyFactory();
var dataModelTypeName = Colosoft.Reflection.TypeName.Get(loader.DataModelType);
result.Clear();
foreach (var record in e.Result)
{
var data = objectCreator.Create();
if (!bindStrategy.Bind(record, Query.BindStrategyMode.All, ref data).Any())
{
throw new Exception(string.Format("Not found scheme for bind record data to type '{0}'", data.GetType().FullName));
}
var recordKey = recordKeyFactory.Create(dataModelTypeName, record);
result.Add(new EntityLoaderCreatorArgs((Data.IModel)data, recordKey, new EntityLoaderChildContainer(), new EntityLoaderLinksContainer(), new EntityLoaderReferenceContainer(), uiContext, entityTypeManager));
}
var entities = new List <IEntity>();
foreach (var i in result)
{
IEntity entity = null;
LazyDataState lazyDataState = new LazyDataState();
loader.GetLazyData(i, lazyDataState, queryable.SourceContext, uiContext, entityTypeManager, exceptions);
entity = loader.Create(uiContext, entityTypeManager, i, queryable.SourceContext);
lazyDataState.Entity = entity;
entities.Add(entity);
i.Dispose();
}
var entitiesEnumerable = entities;
callBack(this, new EntityLoaderExecuteQueryEventArgs(LinkDataModelType, LinkEntityType, e.ReferenceValues, entitiesEnumerable));
}, failedCallBack).From(new Query.EntityInfo(LinkDataModelType.FullName, "t1"));
query.Join(ChildDataModelType.FullName, Query.JoinType.Inner, Query.ConditionalContainer.Parse(string.Format("t1.{0} == t2.{1}", ChildPropertyName, ForeignPropertyName)), "t2");
query.Where(string.Format("t2.{0} == ?parentUid", parentUidProperty));
query.Add("?parentUid", new Query.ReferenceParameter(parentUidProperty));
loader.CreateNestedQueries(query, uiContext, entityTypeManager, result, exceptions);
query.EndSubQuery();
}
internal void CreateQueries(Colosoft.Query.Queryable queryable, string uiContext, IEntityLoader parentLoader, IEntityTypeManager entityTypeManager, Queue <Exception> exceptions, EntityLoaderExecuteQueryHandler callBack, Colosoft.Query.SubQueryFailedCallBack failedCallBack)
{
if (_entityLoader == null)
{
_entityLoader = entityTypeManager.GetLoader(EntityType);
}
var result = new List <EntityLoaderCreatorArgs>();
var query = queryable.BeginSubQuery((sender, e) => {
List <IEntity> entities = null;
try
{
var bindStrategy = _entityLoader.GetBindStrategy();
var objectCreator = _entityLoader.GetObjectCreator();
var recordKeyFactory = _entityLoader.GetRecordKeyFactory();
var dataModelTypeName = Colosoft.Reflection.TypeName.Get(_entityLoader.DataModelType);
result.Clear();
foreach (var record in e.Result)
{
var data = objectCreator.Create();
if (!bindStrategy.Bind(record, Query.BindStrategyMode.All, ref data).Any())
{
throw new Exception(string.Format("Not found scheme for bind record data to type '{0}'", data.GetType().FullName));
}
var recordKey = recordKeyFactory.Create(dataModelTypeName, record);
result.Add(new EntityLoaderCreatorArgs((Data.IModel)data, recordKey, new EntityLoaderChildContainer(), new EntityLoaderLinksContainer(), new EntityLoaderReferenceContainer(), uiContext, entityTypeManager));
}
entities = new List <IEntity>();
foreach (var i in result)
{
IEntity entity = null;
LazyDataState lazyDataState = new LazyDataState();
_entityLoader.GetLazyData(i, lazyDataState, queryable.SourceContext, uiContext, entityTypeManager, exceptions);
entity = _entityLoader.Create(uiContext, entityTypeManager, i, queryable.SourceContext);
lazyDataState.Entity = entity;
entities.Add(entity);
i.Dispose();
}
}
catch (Exception ex)
{
failedCallBack(sender, new Query.SubQueryCallBackFailedArgs(e.Info, new Query.QueryFailedInfo(Query.QueryFailedReason.Error, ex.Message.GetFormatter(), ex)));
return;
}
callBack(this, new EntityLoaderExecuteQueryEventArgs(DataModelType, EntityType, e.ReferenceValues, entities));
}, failedCallBack).From(new Query.EntityInfo(DataModelType.FullName));
if (ExecutePredicate != null)
{
query.ExecutePredicate = (Colosoft.Query.QueryExecutePredicate)ExecutePredicate.Clone();
}
string conditionalExpression = null;
if (parentLoader.HasUid)
{
query.Add("?parentUid", new Query.ReferenceParameter(parentLoader.UidPropertyName));
conditionalExpression = string.Format("{0} == ?parentUid", _foreignPropertyName);
}
if (Conditional != null)
{
if (!string.IsNullOrEmpty(conditionalExpression))
{
conditionalExpression = string.Format("{0} && ({1})", conditionalExpression, this.Conditional.Expression);
}
else
{
conditionalExpression = this.Conditional.Expression;
}
foreach (var i in this.Conditional.Parameters)
{
query.Add(i.Name, i.Value);
}
}
if (string.IsNullOrEmpty(conditionalExpression))
{
throw new InvalidOperationException("Not support child, because not found conditional expression.");
}
query.Where(conditionalExpression);
if (_entityLoader != parentLoader)
{
_entityLoader.CreateNestedQueries(query, uiContext, entityTypeManager, result, exceptions);
}
query.EndSubQuery();
}
internal void CreateQueries(Colosoft.Query.Queryable queryable, string uiContext, IEntityTypeManager entityTypeManager, Queue <Exception> exceptions, EntityLoaderExecuteQueryHandler callBack, Colosoft.Query.SubQueryFailedCallBack failedCallBack)
{
if (_entityLoader == null)
{
_entityLoader = entityTypeManager.GetLoader(EntityType);
}
var result = new List <EntityLoaderCreatorArgs>();
var query = queryable.BeginSubQuery((sender, e) => {
List <IEntity> entities = null;
try
{
var bindStrategy = _entityLoader.GetBindStrategy();
var objectCreator = _entityLoader.GetObjectCreator();
var recordKeyFactory = _entityLoader.GetRecordKeyFactory();
Colosoft.Reflection.TypeName dataModelTypeName = null;
try
{
dataModelTypeName = Colosoft.Reflection.TypeName.Get(_entityLoader.DataModelType);
}
catch (Exception ex)
{
throw new Exception("An error ocurred when get DataModelType", ex);
}
result.Clear();
foreach (var record in e.Result)
{
var data = objectCreator.Create();
var bindResult = bindStrategy.Bind(record, Query.BindStrategyMode.All, ref data);
if (!bindResult.Any())
{
throw new Exception(string.Format("Not found scheme for bind record data to type '{0}'", data.GetType().FullName));
}
Query.RecordKey recordKey = null;
try
{
recordKey = recordKeyFactory.Create(dataModelTypeName, record);
}
catch (Exception ex)
{
throw new Exception("An error ocurred when create record key", ex);
}
result.Add(new EntityLoaderCreatorArgs((Data.IModel)data, recordKey, new EntityLoaderChildContainer(), new EntityLoaderLinksContainer(), new EntityLoaderReferenceContainer(), uiContext, entityTypeManager));
}
entities = new List <IEntity>();
foreach (var i in result)
{
try
{
IEntity entity = null;
LazyDataState lazyDataState = new LazyDataState();
_entityLoader.GetLazyData(i, lazyDataState, queryable.SourceContext, uiContext, entityTypeManager, exceptions);
entity = _entityLoader.Create(uiContext, entityTypeManager, i, queryable.SourceContext);
lazyDataState.Entity = entity;
entities.Add(entity);
i.Dispose();
}
catch (Exception ex)
{
throw new AggregateException(ex.Message, exceptions);
}
}
}
catch (Exception ex)
{
failedCallBack(sender, new Query.SubQueryCallBackFailedArgs(e.Info, new Query.QueryFailedInfo(Query.QueryFailedReason.Error, ex.Message.GetFormatter(), ex)));
return;
}
callBack(this, new EntityLoaderExecuteQueryEventArgs(DataModelType, EntityType, e.ReferenceValues, entities));
entities.Clear();
}, failedCallBack).From(new Query.EntityInfo(DataModelType.FullName));
var conditional = this.GetConditional();
if (conditional == null)
{
throw new InvalidOperationException("Conditional not found");
}
query.Where(conditional.Expression);
foreach (var i in conditional.Parameters)
{
query.Add(i.Name, i.Value);
}
_entityLoader.CreateNestedQueries(query, uiContext, entityTypeManager, result, exceptions);
query.EndSubQuery();
}
/// <summary> /// Recupera os dados de carga tardia . /// </summary> /// <param name="creatorArgs">Argumentos para a criação da entidade.</param> /// <param name="state">Estado dos dados de carga tardia.</param> /// <param name="sourceContext">Contexto de origem dos dados.</param> /// <param name="uiContext">Contexto da interface com o usuário.</param> /// <param name="entityTypeManager">Gerenciador dos tipos de entidades.</param> /// <param name="exceptions">Fila dos erros ocorridos.</param> public abstract void GetLazyData(EntityLoaderCreatorArgs creatorArgs, LazyDataState state, Colosoft.Query.ISourceContext sourceContext, string uiContext, IEntityTypeManager entityTypeManager, Queue <Exception> exceptions);