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ES6 modules
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307
src/Resource/Warehouse.js
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307
src/Resource/Warehouse.js
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/*
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* Copyright (c) 2017 Ahmed Kh. Zamil
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/**
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* Created by Ahmed Zamil on 25/07/2017.
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*/
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"use strict";
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import AsyncReply from '../Engine/AsyncReply.js';
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import ResourceTemplate from '../Resource/Template/ResourceTemplate.js';
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import IEventHandler from '../Engine/IEventHandler.js';
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import AutoList from '../Data/AutoList.js';
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import KeyList from '../Data/KeyList.js';
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import DistributedConnection from '../Net/IIP/DistributedConnection.js';
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import MemoryStore from '../Stores/MemoryStore.js';
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import Instance from '../Resource/Instance.js';
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import IStore from './IStore.js';
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export class WH extends IEventHandler
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{
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constructor()
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{
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super();
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this.stores = new AutoList();
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this.resources = new KeyList();
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this.resourceCounter = 0;
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this.templates = new KeyList();
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this.protocols = new KeyList();
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this._register("connected");
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this._register("disconnected");
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}
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new(type, name, store = null, parent = null, manager = null)
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{
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var res = new type();
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this.put(res, name, store, parent, null, 0, manager);
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return res;
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}
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get(id, settings)
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{
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if (Number.isInteger(id))
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{
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//if (Warehouse.resources.contains(id))
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return new AsyncReply(this.resources.item(id));
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//else
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// return null;
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}
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else
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{
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var p = id.split('/');
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var res = null;
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for(var s = 0; s < this.stores.length; s++)
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{
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var d = this.stores.at(s);
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if (p[0] == d.instance.name)
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{
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var i = 1;
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res = d;
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while(p.length > i)
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{
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var si = i;
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for (var r = 0; r < res.instance.children.length; r++)
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if (res.instance.children.item(r).instance.name == p[i])
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{
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i++;
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res = res.instance.children.item(r);
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break;
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}
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if (si == i)
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// not found, ask the store
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return d.get(id.substring(p[0].length + 1));
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}
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return new AsyncReply(res);
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}
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}
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// Should we create a new store ?
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if (id.includes("://"))
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{
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var url = id.split("://", 2);
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var hostname = url[1].split("/", 2)[0];
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var pathname = url[1].split("/").splice(1).join("/");
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var handler;
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var rt = new AsyncReply();
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var self = this;
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if (handler = this.protocols.item(url[0]))
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{
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var store = this.new(handler, url[0] + "://" + hostname);
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store.open(settings).then(x=>{
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if (success)
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{
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if (pathname.length > 0 && pathname[1] != "")
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store.get(pathname[1]).then(r=>{
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rt.trigger(r);
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}).error(e => rt.triggerError(e));
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else
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rt.trigger(store);
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}
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else
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{
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self.remove(store);
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}
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}).error(e => {
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rt.triggerError(e);
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self.remove(store);
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});
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}
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return rt;
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}
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return new AsyncReply(null);
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}
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}
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remove(resource)
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{
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if (this.resources.contains(resource.instance.id))
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this.resources.remove(resource.instance.id);
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else
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return false;
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if (resource instanceof IStore)
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{
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this.stores.remove(resource);
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// remove all objects associated with the store
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var toBeRemoved = null;
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for (var i = 0; i < this.resources.length; i++)
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{
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var o = this.resources.at(i);
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if (o.instance.store == resource)
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{
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if (toBeRemoved == null)
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toBeRemoved = [];
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toBeRemoved.push(o);
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}
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}
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if (toBeRemoved != null)
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for(var i = 0; i < toBeRemoved.length; i++)
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this.remove(toBeRemoved[i]);
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this._emit("disconnected", resource);
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}
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if (resource.instance.store != null)
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resource.instance.store.remove(resource);
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resource.destroy();
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return true;
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}
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put(resource, name, store, parent, customTemplate = null, age = 0, manager = null){
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resource.instance = new Instance(this.resourceCounter++, name, resource, store, customTemplate, age);
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//resource.instance.children.on("add", Warehouse._onChildrenAdd).on("remove", Warehouse._onChildrenRemove);
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//resource.instance.parents.on("add", Warehouse._onParentsAdd).on("remove", Warehouse._onParentsRemove);
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if (manager != null)
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resource.instance.managers.add(manager);
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if (parent)
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{
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parent.instance.children.add(resource);
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}
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else
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{
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if (!(resource instanceof IStore))
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store.instance.children.add(resource);
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}
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if (resource instanceof IStore)
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{
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this.stores.add(resource);
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this._emit("connected", resource);
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}
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else
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store.put(resource);
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this.resources.add(resource.instance.id, resource);
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}
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_onParentsRemove(value)
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{
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if (value.instance.children.contains(value))
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value.instance.children.remove(value);
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}
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_onParentsAdd(value)
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{
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if (!value.instance.children.contains(value))
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value.instance.children.add(value);
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}
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_onChildrenRemove(value)
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{
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if (value.instance.parents.contains(value))
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value.instance.parents.remove(value);
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}
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_onChildrenAdd(value)
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{
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if (!value.instance.parents.contains(value))
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value.instance.parents.add(value);
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}
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putTemplate(template)
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{
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this.templates.add(template.classId.valueOf(), template);
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}
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getTemplateByType(type)
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{
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// loaded ?
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for (var i = 0; i < this.templates.length; i++)
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if (this.templates.at(i).className == typeof(type))
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return this.templates.at(i);
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var template = new ResourceTemplate(type);
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this.templates.add(template.classId.valueOf(), template);
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return template;
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}
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getTemplateByClassId(classId)
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{
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var template = this.templates.item(classId);
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return new AsyncReply(template);
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}
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getTemplateByClassName(className)
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{
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for(var i = 0; i < this.templates.length; i++)
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if (this.templates.at(i).className == className)
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return new AsyncReply(this.templates.at(i));
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return new AsyncReply(null);
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}
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_qureyIn(path, index, resources)
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{
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var rt = [];
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if (index == path.length - 1)
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{
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if (path[index] == "")
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for(var i = 0; i < resources.length; i++)
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rt.push(resources.at(i));
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else
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for(var i = 0; i < resources.length; i++)
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if (resources.at(i).instance.name == path[index])
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rt.push(resources.at(i));
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}
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else
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for(var i = 0; i < resources.length; i++)
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if (resources.at(i).instance.name == path[index])
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rt = rt.concat(this._qureyIn(path, index+1, resources.at(i).instance.children));
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return rt;
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}
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query(path)
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{
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var p = path.split('/');
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return new AsyncReply(this._qureyIn(p, 0, this.stores));
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}
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}
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let Warehouse = new WH();
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Warehouse.protocols.add("iip", DistributedConnection);
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Warehouse.protocols.add("mem", MemoryStore);
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export default Warehouse;
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