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FLocal/Core/DataObject.cs

74 lines
1.9 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
namespace FLocal.Core {
abstract public class DataObject<TKey, T> : IDataObject<TKey, T>
where T : DataObject<TKey, T>, new()
where TKey : struct {
private TKey? _id;
public override TKey id {
get {
if(this.isNewObject) {
throw new ObjectDoesntHaveAnIdException();
}
return this._id.Value;
}
}
private bool isNewObject {
get {
return !this._id.HasValue;
}
}
private bool isJustCreated;
protected DataObject() {
Debug.Assert(this is T);
this.isJustCreated = true;
this._id = null;
}
public static T LoadById(TKey id) {
return registry.Get(id, false);
}
protected static Dictionary<TKey, T> LoadByIdsForLoadingFromHash(IEnumerable<TKey> ids) {
Dictionary<TKey, T> res = new Dictionary<TKey,T>();
foreach(TKey id in ids) {
res[id] = registry.Get(id, true);
}
return res;
}
protected virtual void AfterCreate(bool forLoadingFromHash) { }
internal override void CreateByIdFromRegistry(TKey id, bool forLoadingFromHash) {
if(!this.isJustCreated) throw new CriticalException("Object already has an id");
this._id = id;
this.isJustCreated = false;
this.AfterCreate(forLoadingFromHash);
}
internal override void markAsDeletedFromRegistry() {
}
private static Registry<TKey, T> registry {
get {
return Registry<TKey, T>.instance;
}
}
protected void deleteFromRegistry() {
registry.Delete(new TKey[] { this.id });
}
}
}