private void ImplementReferenceEntityProperties(IClassBuilder entityClass, Type entityType, IEntityNamingConvention convention)
{
var getReferencePropertiesMethod =
entityClass.HasMethod(nameof(IEntity.GetReferenceProperties))
.Returns <IEnumerable <Tuple <string, Type> > >()
.WithModifier("public");
var openPropertyMethod =
entityClass.HasMethod(nameof(IEntity.OpenProperty)).Returns <IEntitySet>().WithModifier("public");
var openPropertyNameParam = openPropertyMethod.WithParam <string>("propertyName");
foreach (var property in ReflectionUtil.GetAllProperties(entityType))
{
var foreignEntityType = convention.TryGetRefEntityType(property);
if (foreignEntityType == null)
{
continue;
}
var refNameTypeField =
entityClass.HasField <Tuple <string, Type> >().WithModifier("private").WithModifier("readonly").WithAssignment(a =>
a.InvokeConstructor(
typeof(Tuple <string, Type>),
inv =>
inv.WithParam(p => p.String(property.Name))
.WithParam(p => p.Typeof(foreignEntityType))));
getReferencePropertiesMethod.Body.Write("yield return ").Write(refNameTypeField).EndStatement();
INamedReference backingField;
if (typeof(IEnumerable).IsAssignableFrom(property.PropertyType))
{
backingField =
entityClass.HasField <EntityList>()
.WithAssignment(a => a.InvokeConstructor(typeof(EntityList), x => { }));
entityClass.HasProperty(property.Name, property.PropertyType)
.WithModifier("public")
.HasGetter()
.Write("return ")
.Write(typeof(System.Linq.Enumerable))
.Write(".")
.Write("OfType<")
.Write(foreignEntityType)
.Write(">(")
.Write(backingField)
.Write(")")
.EndStatement();
}
else
{
backingField =
entityClass.HasField <EntityHolder>()
.WithAssignment(a => a.InvokeConstructor(typeof(EntityHolder), x => { }));
entityClass.HasProperty(property.Name, property.PropertyType)
.WithModifier("public")
.HasGetter()
.Write("return ")
.Write(backingField)
.Write(".Value")
.Write(" as ")
.Write(foreignEntityType)
.EndStatement();
}
openPropertyMethod.Body.If(
c => c.Compare(openPropertyNameParam, b => b.String(property.Name)),
then => then.Write("return ").Write(backingField).EndStatement()).NewLine();
}
openPropertyMethod.Body.Write("throw ")
.InvokeConstructor(
typeof(InvalidOperationException),
i => i.WithParam(p => p.String("Unknown property requested")))
.EndStatement();
getReferencePropertiesMethod.Body.Write("yield break").EndStatement();
}
public SchemaMigrator(IDataModelHelper dataModel, IEntityNamingConvention convention)
{
m_dataModel = dataModel;
m_convention = convention;
}