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.TScreenTabBean; import com.aurel.track.beans.screen.IPanel; import com.aurel.track.dao.ScreenTabDAO; 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 TScreenTabPeer extends com.aurel.track.persist.BaseTScreenTabPeer implements ScreenTabDAO { private static final Logger LOGGER = LogManager.getLogger(TScreenTabPeer.class); public static final long serialVersionUID = 400L; /** * Loads the screenTab by primary key * @param objectID * @return */ @Override public TScreenTabBean loadByPrimaryKey(Integer objectID) { TScreenTab tobject = null; try { tobject = retrieveByPK(objectID); } catch (Exception e) { LOGGER.warn("Loading of a screenTab by primary key " + objectID + " failed with " + e.getMessage()); LOGGER.debug(ExceptionUtils.getStackTrace(e)); } TScreenTabBean result = null; if (tobject != null) { result = tobject.getBean(); } return result; } @Override public TScreenTabBean loadFullByPrimaryKey(Integer objectID) { TScreenTabBean tabBean = null; Connection con = null; try { con = Transaction.begin(DATABASE_NAME); TScreenTab tab = retrieveByPK(objectID, con); tabBean = tab.getBean(); List<IPanel> panels = loadFullChildren(objectID, con); tabBean.setPanels(panels); Transaction.commit(con); } catch (TorqueException e) { Transaction.safeRollback(con); LOGGER.error("Loding full a screen for key " + objectID + " failed with: " + e); } return tabBean; } public static List<TScreenTabBean> loadByScreen(Integer objectID, Connection con) throws TorqueException { Criteria criteria = new Criteria(); criteria.add(BaseTScreenTabPeer.PARENT, objectID); criteria.addAscendingOrderByColumn(BaseTScreenTabPeer.SORTORDER); List torqueList = null; try { torqueList = doSelect(criteria); } catch (TorqueException e) { LOGGER.error("loadByScreen failed with " + e.getMessage()); } return convertTorqueListToBeanList(torqueList); } public static List<IPanel> loadFullChildren(Integer objectID, Connection con) throws TorqueException { Criteria critChild = new Criteria(); critChild.add(BaseTScreenPanelPeer.PARENT, objectID); critChild.addAscendingOrderByColumn(BaseTScreenPanelPeer.SORTORDER); List<IPanel> result = new ArrayList<IPanel>(); List panels = BaseTScreenPanelPeer.doSelect(critChild, con); for (Iterator it = panels.iterator(); it.hasNext();) { TScreenPanelBean panelBean = ((TScreenPanel) it.next()).getBean(); panelBean.setFields(TScreenPanelPeer.loadFullChildren(panelBean.getObjectID(), con)); result.add(panelBean); } return result; } /** * Loads all screenTabs from TScreenTab table * @return */ @Override public List<TScreenTabBean> loadAll() { Criteria crit = new Criteria(); try { return convertTorqueListToBeanList(doSelect(crit)); } catch (TorqueException e) { LOGGER.error("Loading all screenTabs failed with " + e.getMessage()); return null; } } /** * Saves a screenTab in the TScreenTab table * @param bean * @return */ @Override public Integer save(TScreenTabBean bean) { try { TScreenTab tobject = BaseTScreenTab.createTScreenTab(bean); if (tobject.getIndex() == null) { tobject.setIndex(getNextSortOrder(tobject.getParent())); } if (tobject.getLabel() == null) { tobject.setLabel("Tab" + tobject.getIndex()); } if (tobject.getName() == null) { tobject.setName("Tab" + tobject.getIndex()); } if (tobject.getDescription() == null) { tobject.setDescription("Tab" + tobject.getIndex() + " description"); } tobject.save(); return tobject.getObjectID(); } catch (Exception e) { LOGGER.error("Saving of a screenTab failed with " + e.getMessage()); return null; } } /** * Deletes a screenTab 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 tabs TScreenTab tab = retrieveByPK(objectID, con); Criteria crit = new Criteria(); crit.add(PARENT, tab.getParent()); crit.add(SORTORDER, tab.getIndex(), Criteria.GREATER_THAN); crit.addAscendingOrderByColumn(SORTORDER); List siblingTabs = doSelect(crit, con); for (int i = 0; i < siblingTabs.size(); i++) { TScreenTab s = (TScreenTab) siblingTabs.get(i); s.setIndex(new Integer(s.getIndex().intValue() - 1)); s.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 { LOGGER.debug("Deleting children for tab:" + objectID + "..."); //remove all panels Criteria critChild = new Criteria(); critChild.add(BaseTScreenPanelPeer.PARENT, objectID); List panels = BaseTScreenPanelPeer.doSelect(critChild, con); for (Iterator iter = panels.iterator(); iter.hasNext();) { TScreenPanel panel = (TScreenPanel) iter.next(); //delete children of panel TScreenPanelPeer.deleteChildren(panel.getObjectID(), con); //delete the panel BaseTScreenPanelPeer.doDelete(SimpleKey.keyFor(panel.getObjectID()), con); } LOGGER.debug("Children deleted for tab:" + objectID + "!"); } /** * Verify is a screenTab can be delete * @param objectID */ @Override public boolean isDeletable(Integer objectID) { return true; } /** * Loads all tabs from parent * @return */ @Override public List<TScreenTabBean> loadByParent(Integer parentID) { Criteria crit = new Criteria(); crit.add(PARENT, parentID); crit.addAscendingOrderByColumn(SORTORDER); try { return convertTorqueListToBeanList(doSelect(crit)); } catch (TorqueException e) { LOGGER.error("Loading tabs by Parent failed with " + e.getMessage()); return null; } } /** * Gets the last used sort order * @param objectID * @return */ public static Integer getNextSortOrder(Integer objectID) { Integer sortOrder = null; String max = "max(" + SORTORDER + ")"; Criteria crit = new Criteria(); crit.add(PARENT, objectID); crit.addSelectColumn(max); try { sortOrder = ((Record) doSelectVillageRecords(crit).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 tab sort order=" + sortOrder); return sortOrder; } private static List<TScreenTabBean> convertTorqueListToBeanList(List<TScreenTab> torqueList) { List<TScreenTabBean> beanList = new LinkedList<TScreenTabBean>(); if (torqueList != null) { for (TScreenTab tScreenTab : torqueList) { beanList.add(tScreenTab.getBean()); } } return beanList; } }