Java tutorial
/** * Genji Scrum Tool and Issue Tracker * Copyright (C) 2015 Steinbeis GmbH & Co. KG Task Management Solutions * <a href="http://www.trackplus.com">Genji Scrum Tool</a> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* $Id:$ */ package com.aurel.track.persist; import java.sql.Connection; import java.util.ArrayList; import java.util.Iterator; import java.util.LinkedList; import java.util.List; import org.apache.commons.lang3.exception.ExceptionUtils; import org.apache.logging.log4j.Logger; import org.apache.logging.log4j.LogManager; import org.apache.torque.TorqueException; import org.apache.torque.om.SimpleKey; import org.apache.torque.util.Criteria; import org.apache.torque.util.Transaction; import com.aurel.track.beans.TScreenPanelBean; import com.aurel.track.beans.screen.IField; import com.aurel.track.dao.ScreenPanelDAO; import com.workingdogs.village.Record; /** * You should add additional methods to this class to meet the * application requirements. This class will only be generated as * long as it does not already exist in the output directory. */ public class TScreenPanelPeer extends com.aurel.track.persist.BaseTScreenPanelPeer implements ScreenPanelDAO { private static final Logger LOGGER = LogManager.getLogger(TScreenPanelPeer.class); public static final long serialVersionUID = 400L; /** * Loads the screenPanel by primary key * @param objectID * @return */ @Override public TScreenPanelBean loadByPrimaryKey(Integer objectID) { TScreenPanel tobject = null; try { tobject = retrieveByPK(objectID); } catch (Exception e) { LOGGER.warn("Loading of a screenPanel by primary key " + objectID + " failed with " + e.getMessage()); LOGGER.debug(ExceptionUtils.getStackTrace(e)); } if (tobject != null) { return tobject.getBean(); } return null; } @Override public TScreenPanelBean loadFullByPrimaryKey(Integer objectID) { TScreenPanelBean panelBean = null; Connection con = null; try { con = Transaction.begin(DATABASE_NAME); TScreenPanel tpanel = retrieveByPK(objectID, con); panelBean = tpanel.getBean(); List<IField> fields = loadFullChildren(objectID, con); panelBean.setFields(fields); Transaction.commit(con); } catch (TorqueException e) { Transaction.safeRollback(con); LOGGER.error("Loding full a panel for key " + objectID + " failed with: " + e); } return panelBean; } public static List<TScreenPanelBean> loadByScreenID(Integer screenID, Connection con) throws TorqueException { List torqueList = new ArrayList(); Criteria criteria = new Criteria(); criteria.addJoin(BaseTScreenPanelPeer.PARENT, BaseTScreenTabPeer.OBJECTID); criteria.add(BaseTScreenTabPeer.PARENT, screenID); criteria.addAscendingOrderByColumn(BaseTScreenPanelPeer.SORTORDER); try { torqueList = doSelect(criteria, con); } catch (TorqueException e) { LOGGER.error("Loading all screenPanels failed with " + e.getMessage()); } return convertTorqueListToBeanList(torqueList); } public static List<IField> loadFullChildren(Integer objectID, Connection con) throws TorqueException { Criteria critChild = new Criteria(); critChild.add(BaseTScreenFieldPeer.PARENT, objectID); List<IField> result = new ArrayList<IField>(); List torqueList = BaseTScreenFieldPeer.doSelect(critChild, con); if (torqueList != null) { Iterator itrTorqueList = torqueList.iterator(); while (itrTorqueList.hasNext()) { result.add(((TScreenField) itrTorqueList.next()).getBean()); } } return result; } /** * Loads all screenPanels from TScreenPanel table * @return */ @Override public List<TScreenPanelBean> loadAll() { List torqueList = null; Criteria crit = new Criteria(); try { torqueList = doSelect(crit); } catch (TorqueException e) { LOGGER.error("Loading all screenPanels failed with " + e.getMessage()); } return convertTorqueListToBeanList(torqueList); } /** * Saves a screenPanel in the TScreenPanel table * @param bean * @return */ @Override public Integer save(TScreenPanelBean bean) { Connection con = null; try { con = Transaction.begin(DATABASE_NAME); TScreenPanel tobject = BaseTScreenPanel.createTScreenPanel(bean); if (tobject.getIndex() == null) { tobject.setIndex(getNextSortOrder(tobject.getParent(), con)); } if (tobject.getLabel() == null) { tobject.setLabel("Panel" + tobject.getIndex()); } if (tobject.getName() == null) { tobject.setName("Panel" + tobject.getIndex()); } if (tobject.getDescription() == null) { tobject.setDescription(tobject.getLabel() + " description"); } tobject.save(con); Transaction.commit(con); return tobject.getObjectID(); } catch (Exception e) { Transaction.safeRollback(con); LOGGER.error("Saving of a screenPanel failed with " + e.getMessage()); return null; } } /** * Deletes a screenPanel by primary key * Is deletable should return true before calling this method * @param objectID */ @Override public void delete(Integer objectID) { Connection con = null; try { con = Transaction.begin(DATABASE_NAME); deleteChildren(objectID, con); //reordering borders TScreenPanel panel = retrieveByPK(objectID, con); Criteria crit = new Criteria(); crit.add(PARENT, panel.getParent()); crit.add(SORTORDER, panel.getIndex(), Criteria.GREATER_THAN); crit.addAscendingOrderByColumn(SORTORDER); List siblingPanels = doSelect(crit, con); for (int i = 0; i < siblingPanels.size(); i++) { TScreenPanel pan = (TScreenPanel) siblingPanels.get(i); pan.setIndex(new Integer(pan.getIndex().intValue() - 1)); pan.save(con); } //finaly delete the object doDelete(SimpleKey.keyFor(objectID), con); Transaction.commit(con); } catch (TorqueException e) { Transaction.safeRollback(con); LOGGER.error("Deleting a screenPanel for key " + objectID + " failed with: " + e); } } /** * delete all children and then delete the object * @param objectID * @param con * @throws TorqueException */ public static void deleteChildren(Integer objectID, Connection con) throws TorqueException { //delete also all children LOGGER.debug("Delete children for panel:" + objectID); Criteria critChild = new Criteria(); critChild.add(BaseTScreenFieldPeer.PARENT, objectID); BaseTScreenFieldPeer.doDelete(critChild, con); } /** * Verify is a screenPanel can be delete * @param objectID */ @Override public boolean isDeletable(Integer objectID) { return true; } /** * Loads all panels from parent order by index * @param parentID * @return */ @Override public List loadByParent(Integer parentID) { List torqueList = new ArrayList(); Criteria crit = new Criteria(); crit.add(PARENT, parentID); crit.addAscendingOrderByColumn(SORTORDER); try { torqueList = doSelect(crit); } catch (TorqueException e) { LOGGER.error("Loading panels by Parent failed with " + e.getMessage()); } return convertTorqueListToBeanList(torqueList); } /** * Gets the last used sort order * @param objectID * @return */ private Integer getNextSortOrder(Integer objectID, Connection con) { Integer sortOrder = null; String max = "max(" + SORTORDER + ")"; Criteria crit = new Criteria(); crit.add(PARENT, objectID); crit.addSelectColumn(max); try { sortOrder = ((Record) doSelectVillageRecords(crit, con).get(0)).getValue(1).asIntegerObj(); } catch (Exception e) { } if (sortOrder != null) { sortOrder = new Integer(sortOrder.intValue() + 1); } else { sortOrder = new Integer(0); } LOGGER.debug("Next panel sort order=" + sortOrder); return sortOrder; } private static List<TScreenPanelBean> convertTorqueListToBeanList(List<TScreenPanel> torqueList) { List<TScreenPanelBean> beanList = new LinkedList<TScreenPanelBean>(); if (torqueList != null) { for (TScreenPanel tScreenPanel : torqueList) { beanList.add(tScreenPanel.getBean()); } } return beanList; } }