internal MetadataClass(ApplicationMetadata metadata, string name, int index)
{
this.Metadata = metadata;
this.Name = name;
this.Index = index;
string str = name.Replace('/', '.');
this.QTypeName = "InMeta." + str;
this.IdentName = name.Replace('/', '_');
int length = str.LastIndexOf(".");
if (length >= 0)
{
this.TypeNamespace = str.Substring(0, length);
this.TypeName = str.Substring(length + 1, str.Length - length - 1);
}
else
{
this.TypeNamespace = string.Empty;
this.TypeName = str;
}
this.Properties = new MetadataPropertyList();
this.AllProperties = new MetadataPropertyList();
this.Associations = new MetadataAssociationList();
this.Owners = new MetadataAssociationList();
this.Childs = new MetadataChildRefList(this);
this.ObjectViews = new MetadataObjectViewList(this);
this.ExternalRefs = new MetadataAssociationRefList();
}
internal override void LoadValueFromDb(object value, object exValue, LoadContext loadContext)
{
DataId id = new DataId((string)DataProperty.EscapeFromDBNull(value));
DataObject dataObject = (DataObject)null;
DataObjectChildList dataObjectChildList = (DataObjectChildList)null;
if (!id.IsEmpty)
{
MetadataAssociationRefList refs = this.Metadata.Association.Refs;
MetadataAssociationRef metadataAssociationRef = this.Metadata.Association.Selector == null ? refs[0] : refs.FindBySelectorValue(exValue);
if (metadataAssociationRef == null)
{
throw new DataException(string.Format("Нарушение целостности данных.\n{0}\nОшибка: Невозможно определить класс связанного объекта по значению селектора '{1}'.\n", (object)this.SystemView, exValue));
}
dataObject = this.Session[metadataAssociationRef.RefClass].EnsureCacheItem(id);
if (dataObject.IsNull)
{
dataObject = (DataObject)null;
}
else if (this.Metadata.IsAggregation)
{
dataObjectChildList = dataObject.GetChilds(metadataAssociationRef.OwnerChildRef);
if ((loadContext & LoadContext.FetchAllObjects) != (LoadContext)0)
{
dataObjectChildList.SetCompleted(true);
}
}
}
base.SetValue((object)dataObject);
dataObjectChildList?.AttachChild(this.Object, true);
}
internal override object GetValue()
{
object obj = base.GetValue();
if (obj != null)
{
return(obj);
}
MetadataAssociationRefList refs = this.Metadata.Association.Refs;
return(this.Metadata.Association.Selector == null ? (object)this.Session[refs[0].RefClass].NullObject : (object)this.Session.UntypedNullObject);
}
public SqlUtils.NavigationStep EnsureRootStep(string path)
{
SqlUtils.NavigationStep navigationStep1 = !string.IsNullOrEmpty(path) ? this.FindRootStep(path) : throw new ArgumentNullException(nameof(path));
if (navigationStep1 != null)
{
return(navigationStep1);
}
string predecessorPath;
string identifier;
MetadataClass refClass1;
bool isExternalRef;
SqlUtils.Navigation.ParseLastPartOfPath(this.Class.Metadata.Classes, path, out predecessorPath, out identifier, out refClass1, out isExternalRef);
SqlUtils.NavigationStep predecessor = !string.IsNullOrEmpty(predecessorPath) ? this.EnsureRootStep(predecessorPath) : (SqlUtils.NavigationStep)null;
MetadataClass refClass2 = predecessor != null ? predecessor.TargetClass : this.Class;
SqlUtils.NavigationStep navigationStep2;
if (isExternalRef)
{
MetadataProperty metadataProperty = refClass1.Properties.Need(identifier);
if (!metadataProperty.IsLink)
{
throw new Exception(string.Format("Свойство \"{0}.{1}\" не является отношением.", (object)refClass1.Name, (object)identifier));
}
navigationStep2 = (SqlUtils.NavigationStep) new SqlUtils.ExternalAssociationNavigationStep(this, predecessor, path, metadataProperty.Association.Refs.Need(refClass2));
}
else
{
MetadataProperty property;
MetadataChildRef childRef;
refClass2.NeedMember(identifier, out property, out childRef);
if (property != null)
{
if (!property.IsLink)
{
throw new DataException(string.Format("\"{0}\" не является ассоциацией или дочерним объектом.", (object)identifier));
}
MetadataAssociationRefList refs = property.Association.Refs;
if (refClass1 == null && refs.Count != 1)
{
throw new DataException(string.Format("\"{0}\" является ассоциацией с вариантами связи. В тексте запроса такое поле следует указывать в форме \"имя-свойства:имя-связанного-класса\" (например, \"Subject:Person\").", (object)identifier));
}
navigationStep2 = (SqlUtils.NavigationStep) new SqlUtils.AssociationNavigationStep(this, predecessor, path, refClass1 == null ? refs[0] : refs.Need(refClass1));
}
else
{
navigationStep2 = (SqlUtils.NavigationStep) new SqlUtils.ChildNavigationStep(this, predecessor, path, childRef);
}
}
navigationStep2.TargetAlias = this.CreateUniqueAlias(navigationStep2.TargetClass.DataTable);
this.RootSteps.Add(navigationStep2);
return(navigationStep2);
}
protected internal DataProperty CreatePropertyInstance(
MetadataProperty propertyMetadata)
{
switch (propertyMetadata.Purpose)
{
case MetadataPropertyPurpose.Data:
DataType dataType = propertyMetadata.DataType & DataType.BaseMask;
switch (dataType)
{
case DataType.Boolean:
return((DataProperty) new BooleanProperty(this, propertyMetadata));
case DataType.Integer:
return((DataProperty) new IntegerProperty(this, propertyMetadata));
case DataType.Float:
return((DataProperty) new DoubleProperty(this, propertyMetadata));
case DataType.Currency:
return((DataProperty) new CurrencyProperty(this, propertyMetadata));
case DataType.DateTime:
return((DataProperty) new DateTimeProperty(this, propertyMetadata));
case DataType.String:
return((DataProperty) new StringProperty(this, propertyMetadata));
case DataType.Memo:
return((DataProperty) new StringProperty(this, propertyMetadata));
case DataType.Binary:
return((DataProperty) new BinaryProperty(this, propertyMetadata));
default:
throw new DataException(string.Format("Некорректный тип данных {0} свойства {1} объекта {2}", (object)dataType, (object)propertyMetadata.Name, (object)this.FStorage.Class.Name));
}
case MetadataPropertyPurpose.Association:
case MetadataPropertyPurpose.Aggregation:
MetadataAssociationRefList refs = propertyMetadata.Association.Refs;
return(propertyMetadata.Association.Selector == null ? (DataProperty)this.Session[refs[0].RefClass].CreateLinkPropertyInstance(this, propertyMetadata) : (DataProperty) new LinkProperty(this, propertyMetadata));
default:
throw new System.Data.DataException("Попытка создания объекта доступа к свойству ID.");
}
}
internal override int SaveValueToDb(ref object value, ref object exValue)
{
if (!this.IsAssigned)
{
throw new DataException("Попытка записать в БД неприсвоенное значение.");
}
MetadataAssociationRefList refs = this.Metadata.Association.Refs;
DataObject dataObject = (DataObject)base.GetValue();
if (dataObject != null && !dataObject.IsNull)
{
value = (object)dataObject.Id.ToString();
if (this.Metadata.Association.Selector != null)
{
exValue = InDbUtils.Convert((object)refs.Need(dataObject.Class).SelectorValue, this.Metadata.Association.Selector.DataType);
}
}
return(this.Metadata.Association.Selector != null ? 2 : 1);
}
internal MetadataAssociation(MetadataProperty property)
{
this.Property = property;
this.Property.SetAssociation(this);
this.Refs = new MetadataAssociationRefList();
}
