Java tutorial
/* Copyright 2015 Pablo Arrighi, Sarah Boukris, Mehdi Chtiwi, Michael Dubuis, Kevin Perrot, Julien Prudhomme. This file is part of SXP. SXP is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, version 3. SXP is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with SXP. If not, see <http://www.gnu.org/licenses/>. */ package model.data.manager; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.Map.Entry; import org.jdom2.Element; import util.Printer; import util.StringToElement; import model.data.contrat.Contrat; import model.data.item.Item; import model.data.user.User; /** * Manager for deals. * @author Julien Prudhomme * @author Michael Dubuis * */ public class ContratManager { private HashMap<String, ArrayList<Contrat>> deals = new HashMap<String, ArrayList<Contrat>>(); private Manager manager; ///////////////////////////////////////////////// CONSTRUCTORS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ public ContratManager(Manager m) { manager = m; } ///////////////////////////////////////////////// GETTERS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ public HashMap<String, ArrayList<Contrat>> getDeals() { return deals; } /** * Get the current user's deals. If doesn't exist, return create new ArrayList; * @return ArrayList<Deal> */ public ArrayList<Contrat> getUserDeals(String publicKey) { if (!deals.containsKey(publicKey)) deals.put(publicKey, new ArrayList<Contrat>()); return deals.get(publicKey); } /** * Get the current user's deals. If doesn't exist, it will be created * @return ArrayList<Deal> */ public ArrayList<Contrat> getDealsCurrentUser() { User currentUser = manager.getUserManager().getCurrentUser(); if (currentUser == null) { System.err.println("no user logged"); return null; } String publicKey = currentUser.getKeys().getPublicKey().toString(16); if (!deals.containsKey(publicKey)) deals.put(publicKey, new ArrayList<Contrat>()); return getUserDeals(publicKey); } public Contrat getContract(String contratID) { for (Contrat c : this.getDealsCurrentUser()) { if (c.getId().equals(contratID)) return c; } return null; } public boolean containsUser(String user) { return deals.containsKey(user); } ///////////////////////////////////////////////// XML \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ /** * Get an XML string representing all the deals that are saved on this device. * @return A string, XML formated */ protected String getDealsXML() { StringBuffer s = new StringBuffer(); for (Entry<String, ArrayList<Contrat>> entry : this.deals.entrySet()) { String owner = entry.getKey(); ArrayList<Contrat> deals = entry.getValue(); for (Contrat d : deals) { s.append("<deal>"); s.append("<owner>"); s.append(owner); s.append("</owner>"); s.append(d); s.append("</deal>"); } } return s.toString(); } /** * Load all the deals in this element * @param e an element that contains messages in XML format. */ protected void loadDeals(Element e) { Element root = StringToElement.getElementFromString(e.getValue(), e.getName()); for (Element d : root.getChildren()) { String owner = d.getChildText("owner"); Element deal = d.getChild("Deal"); addDeal(owner, new Contrat(deal)); } } ///////////////////////////////////////////////// ADDERS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ /** * Create a new empty Deal for the current User * @param title */ public Contrat newDeal(String title) { User currentUser = manager.getUserManager().getCurrentUser(); if (currentUser == null) { Printer.printError(this, "newDeal", "No user logged"); return null; } String publicKey = currentUser.getKeys().getPublicKey().toString(16); if (!deals.containsKey(publicKey)) deals.put(publicKey, new ArrayList<Contrat>()); Contrat deal = new Contrat(title, currentUser); deals.get(publicKey).add(deal); return deal; } /** * Add Deal to the user's publicKey. If deal is empty, it will abort. * If the publicKey isn't an user's publicKey known, it will abort. * @param publicKey * @param deal */ public void addDeal(String publicKey, Contrat deal) { if (deal == null) { Printer.printError(this, "addDeal", "deal is empty"); return; } if (manager.getUserManager().getUser(publicKey) == null) { Printer.printError(this, "addDeal", "user is unknow"); return; } if (!deals.containsKey(publicKey)) deals.put(publicKey, new ArrayList<Contrat>()); deals.get(publicKey).add(deal); } public boolean addItem(String contratID, Item item) { Contrat contrat = null; User currentUser = manager.getUserManager().getCurrentUser(); if (currentUser == null) { System.err.println("no user logged"); return false; } String publicKey = currentUser.getKeys().getPublicKey().toString(16); for (Contrat c : deals.get(publicKey)) { if (c.getId().equals(contratID)) { contrat = c; break; } } if (contrat == null) { Printer.printError(this, "addItem", "Contrat doesn't exist !"); return false; } return contrat.addItem(item); } public Collection<Contrat> getContrats() { ArrayList<Contrat> contrats = new ArrayList<Contrat>(); for (ArrayList<Contrat> cs : deals.values()) { contrats.addAll(cs); } return contrats; } public void addContrat(Contrat c) { ArrayList<Contrat> contrats = deals.get(c.getKeys().getPublicKey().toString(16)); if (contrats == null) { contrats = new ArrayList<Contrat>(); deals.put(c.getKeys().getPublicKey().toString(16), contrats); } if (contrats.contains(c)) { Contrat local = contrats.get(contrats.indexOf(c)); if (local.getLastUpdated() < c.getLastUpdated()) { contrats.remove(local); contrats.add(c); c.publish(manager.getNetwork()); } } else { contrats.add(c); c.publish(manager.getNetwork()); } } //////////////////////////////////////////////// REMOVERS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ public boolean removeContrat(String publicKey, String contratID) { for (Contrat d : deals.get(publicKey)) { if (d.getId().equals(contratID)) return deals.get(publicKey).remove(d); } return false; } public boolean removeItemContrat(String itemKey, String contratID) { String publicKey = manager.getUserManager().getCurrentUser().getKeys().getPublicKey().toString(16); if (publicKey == null || publicKey.isEmpty()) return false; for (Contrat d : getDealsCurrentUser()) { if (d.getId().equals(contratID)) { return d.removeItem(itemKey); } } return false; } public boolean removeSignatoryContrat(String contratID, String publicKey) { String currentPublicKey = manager.getUserManager().getCurrentUser().getKeys().getPublicKey().toString(16); if (publicKey == null || publicKey.isEmpty()) return false; if (currentPublicKey.equals(publicKey)) return false; for (Contrat d : deals.get(publicKey)) { if (d.getId().equals(contratID)) { return d.removeSignatory(publicKey); } } return false; } }