public override PropertyValue GetValue(IEntity entity, IProperty property)
{
var referenceProperty = property.As <ReferenceProperty>();
var instanceName = entity.GetInstanceName();
var environment = entity.GetEnvironment();
var identifier = ContextInstanceManager.TryGet(instanceName);
if (identifier == null || CheckWithoutLoading(identifier))
{
return(PropertyValue.Empty);
}
var contextProvider = identifier.Provider.GetService <IContextProvider>();
using var scope = identifier.ServiceProvider.TryCreateScope();
using var service = contextProvider.CreateContextService(new ContextServiceContext(scope?.ServiceProvider ?? identifier.ServiceProvider, identifier));
service.InitializeEnvironment(environment).InitializeInstanceName(instanceName);
var repProvider = service.CreateRepositoryProvider(referenceProperty.RelationalType);
var expression = BuidRelationExpression(entity, referenceProperty);
if (expression != null)
{
var value = Execute(repProvider.Queryable, expression);
return(value == null ? PropertyValue.Empty : PropertyValue.NewValue(value));
}
return(PropertyValue.Empty);
}
public override PropertyValue GetValue(IEntity entity, IProperty property)
{
var entityProperty = property.As <EntitySetProperty>();
var instanceName = entity.GetInstanceName();
var environment = entity.GetEnvironment();
var identifier = ContextInstanceManager.TryGet(instanceName);
if (identifier == null || CheckWithoutLoading(identifier))
{
return(PropertyValue.Empty);
}
var contextProvider = identifier.Provider.GetService <IContextProvider>();
using var scope = identifier.ServiceProvider.TryCreateScope();
using var service = contextProvider.CreateContextService(new ContextServiceContext(scope?.ServiceProvider ?? identifier.ServiceProvider, identifier));
service.InitializeEnvironment(environment).InitializeInstanceName(instanceName);
var repProvider = service.CreateRepositoryProvider(entityProperty.RelationalType);
var expression = BuidRelationExpression(entity, entityProperty);
object result = null;
if (expression != null)
{
result = Execute(repProvider.Queryable, expression);
var querySetType = typeof(EntitySet <>).MakeGenericType(entityProperty.RelationalType);
var list = querySetType.New(new[] { result });
//设置实体集所属的实体Owner
list.As <IEntityRelation>(e => e.Owner = new EntityOwner(entity, property));
return(PropertyValue.NewValue(list));
}
return(PropertyValue.Empty);
}