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- using System;
- using System.Linq;
- namespace InABox.Core
- {
- public interface IEntityLink
- {
- Guid ID { get; set; }
-
- Guid Deleted { get; set; }
- bool Synchronise(object entity);
- bool Clear();
- bool IsValid();
-
- }
- public interface IEntityLink<T> : IEntityLink
- {
- }
- public abstract class EntityLink<T> : BaseObject, IEntityLink<T> where T : BaseObject, new()
- {
- [DoNotSerialize]
- protected Entity LinkedEntity;
- //[Obsolete("Please supply linked Entity")]
- public EntityLink()
- {
- }
- public EntityLink(Entity entity)
- {
- LinkedEntity = entity;
- }
- [NullEditor]
- public abstract Guid ID { get; set; }
-
- [NullEditor]
- public Guid Deleted { get; set; }
- public virtual bool Synchronise(object Entity)
- {
- var result = false;
- var props = CoreUtils.PropertyList(GetType(),
- x => (!x.Name.Equals("ID") || Entity == null) && !x.DeclaringType.Equals(typeof(BaseObject)), false);
- foreach (var key in props.Keys)
- {
- if (CoreUtils.HasProperty(Entity.GetType(), key))
- {
- var prop = CoreUtils.GetProperty(typeof(T), key);
- if (prop != null && prop.PropertyType.Equals(props[key]) && !prop.PropertyType.GetInterfaces().Any(x => x == typeof(IEntityLink)))
- {
- var oldvalue = CoreUtils.GetPropertyValue(this, key);
- var newvalue = CoreUtils.GetPropertyValue(Entity, key);
- if ((oldvalue == null && newvalue != null) || (oldvalue != null && !oldvalue.Equals(newvalue)))
- {
- result = true;
- try
- {
- CoreUtils.SetPropertyValue(this, key, newvalue);
- }
- catch (Exception e)
- {
- Logger.Send(LogType.Error, "", string.Format("*** Unknown Error: {0}\n{1}", e.Message, e.StackTrace));
- }
- }
- }
- }
- }
- if (LinkedEntity != null)
- foreach (var link in LinkedEntity.LinkedProperties(GetType()))
- {
- link.Update(this, LinkedEntity);
- result = true;
- }
- return result;
- }
- public bool Clear()
- {
- var result = false;
- var props = CoreUtils.PropertyList(GetType(), x => !x.Name.Equals("ID"), false);
- foreach (var key in props.Keys)
- {
- var prop = CoreUtils.GetProperty(typeof(T), key);
- if (prop != null && prop.PropertyType.Equals(props[key]))
- {
- var oldvalue = CoreUtils.GetPropertyValue(this, key);
- var newvalue = prop.PropertyType.Equals(typeof(string)) ? "" : Activator.CreateInstance(prop.PropertyType);
- if ((oldvalue == null && newvalue != null) || (oldvalue != null && !oldvalue.Equals(newvalue)))
- {
- result = true;
- CoreUtils.SetPropertyValue(this, key, newvalue);
- }
- }
- }
- return result;
- }
- protected override void DoPropertyChanged(string name, object before, object after)
- {
- if (IsObserving() && LinkedEntity != null)
- {
- var link = LinkedEntity.LinkedProperties(GetType()).FirstOrDefault(x => x.Source.Name.Equals(name));
- if (link != null)
- link.Update(this, LinkedEntity);
- }
- }
- public bool IsValid() => !ID.Equals(Guid.Empty) && Deleted.Equals(Guid.Empty);
- }
- }
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