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.artikel.fastlanereader; import java.util.Iterator; import java.util.List; import javax.swing.Icon; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.ScrollableResults; import org.hibernate.Session; import org.hibernate.SessionFactory; 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 Funktionalität für den Artikel 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 ck * @version 1.0 */ public class KundenidentnummerHandler extends UseCaseHandler { public QueryResult getPageAt(Integer rowIndex) throws EJBExceptionLP { QueryResult result = null; SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; Iterator resultListIterator = null; List resultList = null; Object[][] rows = 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(); session = setFilter(session); String queryString = getFromClause() + buildWhereClause() + buildOrderByClause(); Query query = session.createQuery(queryString); query.setFirstResult(startIndex); query.setMaxResults(pageSize); resultList = query.list(); resultListIterator = resultList.iterator(); rows = new Object[resultList.size()][colCount]; resultListIterator = resultList.iterator(); int row = 0; while (resultListIterator.hasNext()) { Object o[] = (Object[]) resultListIterator.next(); Object[] rowToAddCandidate = new Object[colCount]; rowToAddCandidate[0] = o[0]; rowToAddCandidate[1] = o[1]; rowToAddCandidate[2] = o[2]; rowToAddCandidate[3] = o[3]; rowToAddCandidate[4] = o[4]; rowToAddCandidate[5] = o[5]; rowToAddCandidate[6] = o[6]; rows[row] = rowToAddCandidate; row++; } result = new QueryResult(rows, getRowCount(), startIndex, endIndex, 0); } catch (Exception e) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e); } finally { closeSession(session); } return result; } protected long getRowCountFromDataBase() { long rowCount = 0; SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { session = factory.openSession(); session = setFilter(session); String queryString = "SELECT count(kundesoko.i_id) FROM FLRKundesoko as kundesoko" + " LEFT OUTER JOIN kundesoko.flrartikel AS artikelliste " + " LEFT OUTER JOIN kundesoko.flrartikel.artikelsprset AS aspr " + 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 { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, 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( "WHERE artikelliste.i_id IS NOT NULL AND kundesoko.c_kundeartikelnummer IS NOT NULL "); 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; for (int i = 0; i < filterKriterien.length; i++) { if (filterKriterien[i].isKrit) { where.append(" " + booleanOperator); if (filterKriterien[i].isBIgnoreCase()) { where.append(" upper(kundesoko." + filterKriterien[i].kritName + ")"); } else { where.append(" kundesoko." + filterKriterien[i].kritName); } where.append(" " + filterKriterien[i].operator); if (filterKriterien[i].isBIgnoreCase()) { where.append(" " + filterKriterien[i].value.toUpperCase()); } else { where.append(" " + filterKriterien[i].value); } } } } 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 (getQuery() != null) { SortierKriterium[] kriterien = 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(kriterien[i].kritName); orderBy.append(" "); orderBy.append(kriterien[i].value); } } } } else { // no sort criteria found, add default sort if (sortAdded) { orderBy.append(", "); } orderBy.append("kundesoko.c_kundeartikelnummer ASC "); sortAdded = true; } if (orderBy.indexOf("kundesoko.i_id") < 0) { // 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(" kundesoko.i_id "); 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() throws Exception { return "SELECT kundesoko.i_id, kundesoko.c_kundeartikelnummer, artikelliste.c_nr, aspr.c_bez,aspr.c_zbez, kundesoko.flrkunde.flrpartner.c_name1nachnamefirmazeile1,(SELECT distinct s.artikel_i_id FROM FLRArtikelsperren as s WHERE s.artikel_i_id=artikelliste.i_id) as sperren FROM FLRKundesoko as kundesoko" + " LEFT OUTER JOIN kundesoko.flrartikel AS artikelliste " + " LEFT OUTER JOIN kundesoko.flrartikel.artikelsprset AS aspr "; } public Session setFilter(Session session) { session = super.setFilter(session); String sMandant = theClientDto.getMandant(); session.enableFilter("filterMandant").setParameter("paramMandant", sMandant); return session; } public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedIdI) throws EJBExceptionLP { getQuery().setSortKrit(sortierKriterien); QueryResult result = null; int rowNumber = 0; ScrollableResults scrollableResult = null; if (selectedIdI instanceof Integer) { if (selectedIdI != null && ((Integer) selectedIdI).intValue() >= 0) { SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { session = factory.openSession(); session = setFilter(session); String queryString = null; try { queryString = getFromClause() + buildWhereClause() + buildOrderByClause(); } catch (Exception ex) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, ex); } Query query = session.createQuery(queryString); scrollableResult = query.scroll(); if (scrollableResult != null) { scrollableResult.beforeFirst(); while (scrollableResult.next()) { Integer id = (Integer) scrollableResult.getInteger(0); if (selectedIdI.equals(id)) { rowNumber = scrollableResult.getRowNumber(); break; } } } } catch (HibernateException e) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, e); } finally { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, he); } } } } if (rowNumber < 0 //|| rowNumber >= getRowCount() ) { rowNumber = 0; } result = getPageAt(new Integer(rowNumber)); result.setIndexOfSelectedRow(rowNumber); return result; } public TableInfo getTableInfo() { if (super.getTableInfo() == null) { setTableInfo(new TableInfo( new Class[] { Integer.class, String.class, String.class, String.class, String.class, String.class, Icon.class, }, new String[] { "i_id", getTextRespectUISpr("lp.kundenartikelnummer", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("artikel.artikelnummerlang", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("bes.artikelbezeichnung", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("artikel.zusatzbez", theClientDto.getMandant(), theClientDto.getLocUi()), getTextRespectUISpr("lp.firma", theClientDto.getMandant(), theClientDto.getLocUi()), "S" }, new int[] { -1, // diese Spalte wird ausgeblendet QueryParameters.FLR_BREITE_L, QueryParameters.FLR_BREITE_L, QueryParameters.FLR_BREITE_SHARE_WITH_REST, QueryParameters.FLR_BREITE_M, QueryParameters.FLR_BREITE_L, QueryParameters.FLR_BREITE_S }, new String[] { "i_id", "kundesoko.c_kundeartikelnummer", "artikelliste.c_nr", "aspr.c_bez", "aspr.c_zbez", Facade.NICHT_SORTIERBAR, Facade.NICHT_SORTIERBAR })); } return super.getTableInfo(); } }