gvsig-projects-pool / org.gvsig.online / trunk / org.gvsig.online / org.gvsig.online.lib / org.gvsig.online.lib.impl / src / main / java / org / gvsig / tools / patch / PatchGeneratorImpl.java @ 9512
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/* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (c) 2007-2024 gvSIG Association
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.tools.patch; |
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import java.util.Iterator; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.i18n.I18nManager; |
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import org.gvsig.tools.task.SimpleTaskStatus; |
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import org.gvsig.tools.task.UserCancelTaskException; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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*
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* @author fdiaz
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*/
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class PatchGeneratorImpl<T> implements PatchGenerator<T> { |
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public static final Logger LOGGER = LoggerFactory.getLogger(PatchGeneratorImpl.class); |
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private final PatchHandler handler; |
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PatchGeneratorImpl(PatchHandler handler) {
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this.handler = handler;
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} |
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@Override
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public void generate(Iterator<T> r, Iterator<T> l, SimpleTaskStatus status) { |
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I18nManager i18n = ToolsLocator.getI18nManager(); |
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if (status == null) { |
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status = ToolsLocator.getTaskStatusManager().createDefaultSimpleTaskStatus(i18n.getTranslation("_Generating_patch"));
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status.setAutoremove(true);
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status.add(); |
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} else {
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status.push(); |
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} |
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try {
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T remoteItem = null;
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T localItem = null;
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if (r.hasNext()) {
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remoteItem = r.next(); |
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} |
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if (l.hasNext()) {
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localItem = l.next(); |
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} |
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while (true) { |
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if (status.isCancellationRequested()) {
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throw new UserCancelTaskException(); |
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} |
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if (localItem == null) { |
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if (remoteItem == null) { |
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break;
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} else {
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//nuevo en REMOTO
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handler.addRemoteChangeInsert(remoteItem); |
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if (r.hasNext()) {
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remoteItem = r.next(); |
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} else {
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remoteItem = null;
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} |
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} |
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} else if (handler.isNew(localItem)) { |
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//nuevo en LOCAL, do nothing
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if (l.hasNext()) {
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localItem = l.next(); |
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} else {
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localItem = null;
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} |
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} else if (remoteItem == null || (remoteItem != null && handler.compareId(remoteItem, localItem) > 0)) { |
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//Hay un borrado remoto,
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if (handler.isLocalChange(localItem)) {
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handler.addRemoteChangeDelete(localItem, true);
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} else {
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handler.addRemoteChangeDelete(localItem, false);
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} |
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if (l.hasNext()) {
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localItem = l.next(); |
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} else {
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localItem = null;
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} |
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} else if (remoteItem != null && handler.compareId(remoteItem, localItem) < 0) { |
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//Hay un borrado local o un insert remoto
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if (handler.isLocalChange(remoteItem)) {
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//Do nothing
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} else {
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handler.addRemoteChangeInsert(remoteItem); |
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} |
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if (r.hasNext()) {
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remoteItem = r.next(); |
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} else {
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remoteItem = null;
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} |
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} else if (remoteItem != null) { // && handler.compare(remoteItem, localItem)!=0) { //same element, but changed |
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if (handler.isLocalChange(localItem)) {
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if (handler.isRemoteChange(remoteItem, localItem)) {
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//conflicto
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handler.addRemoteChangeModify(remoteItem, true);
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} else {
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//Hay modificaci?n local, do nothing
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} |
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} else {
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if (handler.isRemoteChange(remoteItem, localItem)) {
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//cambio remoto sin conflicto
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handler.addRemoteChangeModify(remoteItem, false);
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} else {
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//No es modificacion ni en local ni en remoto, no ha cambios. Do nothing
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} |
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} |
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if (l.hasNext()) {
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localItem = l.next(); |
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} else {
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localItem = null;
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} |
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if (r.hasNext()) {
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remoteItem = r.next(); |
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} else {
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remoteItem = null;
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} |
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} else {
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if (l.hasNext()) {
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localItem = l.next(); |
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} else {
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localItem = null;
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} |
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if (r.hasNext()) {
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remoteItem = r.next(); |
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} else {
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remoteItem = null;
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} |
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} |
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} |
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status.terminate(); |
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} catch (UserCancelTaskException ex) {
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status.cancel(); |
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throw ex;
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} catch (Exception ex) { |
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status.abort(); |
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throw ex;
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} finally {
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status.pop(); |
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} |
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} |
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} |