Java tutorial
/******************************************************************************* * HELIUM V, Open Source ERP software for sustained success * at small and medium-sized enterprises. * Copyright (C) 2004 - 2014 HELIUM V IT-Solutions GmbH * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation, either version 3 of theLicense, or * (at your option) any later version. * * According to sec. 7 of the GNU Affero General Public License, version 3, * the terms of the AGPL are supplemented with the following terms: * * "HELIUM V" and "HELIUM 5" are registered trademarks of * HELIUM V IT-Solutions GmbH. The licensing of the program under the * AGPL does not imply a trademark license. Therefore any rights, title and * interest in our trademarks remain entirely with us. If you want to propagate * modified versions of the Program under the name "HELIUM V" or "HELIUM 5", * you may only do so if you have a written permission by HELIUM V IT-Solutions * GmbH (to acquire a permission please contact HELIUM V IT-Solutions * at trademark@heliumv.com). * * 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * Contact: developers@heliumv.com ******************************************************************************/ package com.lp.server.inserat.fastlanereader; import java.math.BigDecimal; import java.rmi.RemoteException; import java.util.Iterator; import java.util.List; import java.util.Set; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.ScrollableResults; import org.hibernate.Session; import org.hibernate.SessionFactory; import com.lp.server.auftrag.service.AuftragFac; import com.lp.server.eingangsrechnung.service.EingangsrechnungFac; import com.lp.server.inserat.fastlanereader.generated.FLRInserater; import com.lp.server.inserat.fastlanereader.generated.FLRInseratrechnung; import com.lp.server.inserat.service.InseratFac; import com.lp.server.partner.service.KundeFac; import com.lp.server.util.Facade; import com.lp.server.util.fastlanereader.FLRSessionFactory; import com.lp.server.util.fastlanereader.UseCaseHandler; import com.lp.server.util.fastlanereader.service.query.FilterBlock; import com.lp.server.util.fastlanereader.service.query.FilterKriterium; import com.lp.server.util.fastlanereader.service.query.QueryParameters; import com.lp.server.util.fastlanereader.service.query.QueryResult; import com.lp.server.util.fastlanereader.service.query.SortierKriterium; import com.lp.server.util.fastlanereader.service.query.TableInfo; import com.lp.util.EJBExceptionLP; /** * <p> * Hier wird die FLR Funktionalitaet fuer den Auftrag implementiert. Pro UseCase * gibt es einen Handler. * </p> * <p> * Copright Logistik Pur Software GmbH (c) 2004-2007 * </p> * <p> * Erstellungsdatum 2004-08-14 * </p> * <p> * </p> * * @author martin werner, uli walch * @version 1.0 */ public class InseraterHandler extends UseCaseHandler { /** * */ private static final long serialVersionUID = 1L; public static final String FLR_INSERATER = "flrinserater."; public static final String FLR_INSERATER_FROM_CLAUSE = " from FLRInserater flrinserater "; /** * gets the data page for the specified row using the current query. The row * at rowIndex will be located in the middle of the page. * * @param rowIndex * diese Zeile soll selektiert sein * @return QueryResult das Ergebnis der Abfrage * @throws EJBExceptionLP * Ausnahme * @see UseCaseHandler#getPageAt(java.lang.Integer) */ public QueryResult getPageAt(Integer rowIndex) throws EJBExceptionLP { QueryResult result = null; SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { int colCount = getTableInfo().getColumnClasses().length; int pageSize = PAGE_SIZE; int startIndex = Math.max(rowIndex.intValue() - (pageSize / 2), 0); int endIndex = startIndex + pageSize - 1; session = factory.openSession(); String queryString = this.getFromClause() + this.buildWhereClause() + this.buildOrderByClause(); Query query = session.createQuery(queryString); query.setFirstResult(startIndex); query.setMaxResults(pageSize); List<?> resultList = query.list(); Iterator<?> resultListIterator = resultList.iterator(); Object[][] rows = new Object[resultList.size()][colCount]; int row = 0; int col = 0; while (resultListIterator.hasNext()) { FLRInserater inserat = (FLRInserater) resultListIterator.next(); rows[row][col++] = inserat.getI_id(); rows[row][col++] = inserat.getFlreingangsrechnung().getC_nr(); rows[row][col++] = inserat.getFlrinserat().getC_nr(); FLRInseratrechnung inseratrechnung = null; Set s = inserat.getFlrinserat().getRechnungset(); if (s.size() > 0) { inseratrechnung = (FLRInseratrechnung) s.iterator().next(); } if (inseratrechnung != null) { rows[row][col++] = inseratrechnung.getFlrkunde().getFlrpartner().getC_kbez(); } else { rows[row][col++] = null; } rows[row][col++] = inserat.getN_betrag(); rows[row][col++] = getInseratFac() .berechneWerbeabgabeLFEinesInserates(inserat.getFlrinserat().getI_id(), theClientDto); if (inserat.getFlrinserat().getArtikelset().size() > 0) { rows[row][col++] = "A"; } else { rows[row][col++] = null; } rows[row][col++] = inserat.getC_text(); row++; col = 0; } result = new QueryResult(rows, this.getRowCount(), startIndex, endIndex, 0); } catch (Exception e) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e); } finally { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he); } } return result; } /** * gets the total number of rows represented by the current query. * * @return int die Anzehl der Zeilen im Ergebnis * @see UseCaseHandler#getRowCountFromDataBase() */ protected long getRowCountFromDataBase() { long rowCount = 0; SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { session = factory.openSession(); String queryString = "select count(*) from FLRInserater as flrinserater " + this.buildWhereClause(); Query query = session.createQuery(queryString); List<?> rowCountResult = query.list(); if (rowCountResult != null && rowCountResult.size() > 0) { rowCount = ((Long) rowCountResult.get(0)).longValue(); } } catch (Exception e) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e); } finally { if (session != null) { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_HIBERNATE, he); } } } return rowCount; } /** * builds the where clause of the HQL (Hibernate Query Language) statement * using the current query. * * @return the HQL where clause. */ private String buildWhereClause() { StringBuffer where = new StringBuffer(""); if (this.getQuery() != null && this.getQuery().getFilterBlock() != null && this.getQuery().getFilterBlock().filterKrit != null) { FilterBlock filterBlock = this.getQuery().getFilterBlock(); FilterKriterium[] filterKriterien = this.getQuery().getFilterBlock().filterKrit; String booleanOperator = filterBlock.boolOperator; boolean filterAdded = false; for (int i = 0; i < filterKriterien.length; i++) { if (filterKriterien[i].isKrit) { if (filterAdded) { where.append(" " + booleanOperator); } filterAdded = true; if (filterKriterien[i].isBIgnoreCase()) { where.append(" lower(" + FLR_INSERATER + filterKriterien[i].kritName + ")"); } else { where.append(" " + FLR_INSERATER + filterKriterien[i].kritName); } where.append(" " + filterKriterien[i].operator); if (filterKriterien[i].isBIgnoreCase()) { where.append(" " + filterKriterien[i].value.toLowerCase()); } else { where.append(" " + filterKriterien[i].value); } } } if (filterAdded) { where.insert(0, " WHERE"); } } return where.toString(); } /** * builds the HQL (Hibernate Query Language) order by clause using the sort * criterias contained in the current query. * * @return the HQL order by clause. */ private String buildOrderByClause() { StringBuffer orderBy = new StringBuffer(""); if (this.getQuery() != null) { SortierKriterium[] kriterien = this.getQuery().getSortKrit(); boolean sortAdded = false; if (kriterien != null && kriterien.length > 0) { for (int i = 0; i < kriterien.length; i++) { if (!kriterien[i].kritName.endsWith(Facade.NICHT_SORTIERBAR)) { if (kriterien[i].isKrit) { if (sortAdded) { orderBy.append(", "); } sortAdded = true; orderBy.append(FLR_INSERATER + kriterien[i].kritName); orderBy.append(" "); orderBy.append(kriterien[i].value); } } } } else { // no sort criteria found, add default sort if (sortAdded) { orderBy.append(", "); } orderBy.append(FLR_INSERATER).append("flreingangsrechnung.c_nr ASC").append(" ASC "); sortAdded = true; } if (orderBy.indexOf(FLR_INSERATER + "i_id") < 0) { // Martin Werner original: "unique sort required because // otherwise rowNumber of selectedId // within sort() method may be different from the position of // selectedId // as returned in the page of getPageAt()." if (sortAdded) { orderBy.append(", "); } orderBy.append(" ").append(FLR_INSERATER).append("i_id").append(" ASC "); sortAdded = true; } if (sortAdded) { orderBy.insert(0, " ORDER BY "); } } return orderBy.toString(); } /** * get the basic from clause for the HQL statement. * * @return the from clause. */ private String getFromClause() { return "SELECT flrinserater from FLRInserater as flrinserater "; } public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP { QueryResult result = null; try { int rowNumber = 0; getQuery().setSortKrit(sortierKriterien); if (selectedId != null && ((Integer) selectedId).intValue() >= 0) { SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { session = factory.openSession(); String queryString = "select " + FLR_INSERATER + "i_id" + FLR_INSERATER_FROM_CLAUSE + this.buildWhereClause() + this.buildOrderByClause(); Query query = session.createQuery(queryString); ScrollableResults scrollableResult = query.scroll(); if (scrollableResult != null) { scrollableResult.beforeFirst(); while (scrollableResult.next()) { Integer id = (Integer) scrollableResult.getInteger(0); if (selectedId.equals(id)) { rowNumber = scrollableResult.getRowNumber(); break; } } } } finally { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_HIBERNATE, he); } } } if (rowNumber < 0 || rowNumber >= this.getRowCount()) { rowNumber = 0; } result = this.getPageAt(new Integer(rowNumber)); result.setIndexOfSelectedRow(rowNumber); } catch (Exception ex) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, ex); } return result; } public TableInfo getTableInfo() { if (super.getTableInfo() == null) { int iNachkommastellenPreis = 0; try { iNachkommastellenPreis = getMandantFac().getNachkommastellenPreisEK(theClientDto.getMandant()); } catch (RemoteException ex) { throwEJBExceptionLPRespectOld(ex); return null; } setTableInfo(new TableInfo( new Class[] { Integer.class, String.class, String.class, String.class, super.getUIClassBigDecimalNachkommastellen(iNachkommastellenPreis), super.getUIClassBigDecimalNachkommastellen(iNachkommastellenPreis), String.class, String.class }, new String[] { "i_id", getTextRespectUISpr("er.eingangsrechnung", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("iv.inserat", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("lp.firma", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("lp.wert", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("lp.werbeabgabe", theClientDto.getMandant(), theClientDto.getLocUi()), "", getTextRespectUISpr("lp.kommentar", theClientDto.getMandant(), theClientDto.getLocUi()) }, new int[] { QueryParameters.FLR_BREITE_SHARE_WITH_REST, // diese QueryParameters.FLR_BREITE_M, QueryParameters.FLR_BREITE_M, QueryParameters.FLR_BREITE_SHARE_WITH_REST, QueryParameters.FLR_BREITE_M, QueryParameters.FLR_BREITE_M, QueryParameters.FLR_BREITE_XXS, QueryParameters.FLR_BREITE_SHARE_WITH_REST }, new String[] { "i_id", InseratFac.FLR_INSERATER_FLREINGANGSRECHNUNG + ".c_nr", InseratFac.FLR_INSERATER_FLRINSERAT + ".c_nr", Facade.NICHT_SORTIERBAR, InseratFac.FLR_INSERATER_N_BETRAG, Facade.NICHT_SORTIERBAR, Facade.NICHT_SORTIERBAR, InseratFac.FLR_INSERATER_C_TEXT })); } return super.getTableInfo(); } }