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.partner.fastlanereader; import java.rmi.RemoteException; import java.util.Iterator; import java.util.List; import java.util.Locale; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.ScrollableResults; import org.hibernate.Session; import org.hibernate.SessionFactory; import com.lp.server.partner.service.LfliefergruppeDto; import com.lp.server.partner.service.LfliefergruppesprDto; 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> * Diese Klasse kuemmert sich um Liefergruppen die mindestens one LF haben. * </p> * * <p> * Copyright Logistik Pur Software GmbH (c) 2004-2007 * </p> * * <p> * Erstellung: Josef Ornetsmueller; 19.10.05 * </p> * * <p> * * @author $Author: christian $ * </p> * * @version not attributable Date $Date: 2011/12/06 11:56:59 $ */ public class LFLiefergruppenOneLFHandler extends UseCaseHandler { /** * */ private static final long serialVersionUID = 1L; private static final String FLR_SELECT = "select distinct liefergruppe_one_lf.flrliefergruppe.c_nr, liefergruppe_one_lf.id_comp.lfliefergruppe_i_id "; 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 = FLR_SELECT + getFromClause() + buildWhereClause() + 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()) { Object[] o = (Object[]) resultListIterator.next(); rows[row][col++] = o[1]; rows[row][col++] = o[0]; LfliefergruppeDto liefergruppeDto = getLieferantServicesFac() .lfliefergruppeFindByPrimaryKey((Integer) o[1], theClientDto); if (liefergruppeDto.getLfliefergruppesprDto() != null) { rows[row][col++] = liefergruppeDto.getLfliefergruppesprDto().getCBez(); } row++; col = 0; } result = new QueryResult(rows, this.getRowCount(), startIndex, endIndex, 0); } catch (Exception e) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, e); } finally { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he); } } return result; } protected long getRowCountFromDataBase() { long rowCount = 0; SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { session = factory.openSession(); String queryString = "select count(distinct liefergruppe_one_lf.id_comp.lfliefergruppe_i_id) " + getFromClause() + 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, e); } finally { if (session != null) { 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(""); 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; where.append(" liefergruppe_one_lf.flrliefergruppe." + filterKriterien[i].kritName); where.append(" " + filterKriterien[i].operator); 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() { if (getQuery() != null) { SortierKriterium[] kriterien = this.getQuery().getSortKrit(); if (kriterien != null && kriterien.length > 0) { for (int i = 0; i < kriterien.length; i++) { if (kriterien[i].isKrit) { if (!kriterien[i].kritName.endsWith(Facade.NICHT_SORTIERBAR)) { // externes order by not allowed! throw new EJBExceptionLP(EJBExceptionLP.FEHLER_FLR, new Exception("externes order by not allowed!")); } } } } } return " ORDER BY liefergruppe_one_lf.flrliefergruppe.c_nr, liefergruppe_one_lf.id_comp.lfliefergruppe_i_id "; } /** * get the basic from clause for the HQL statement. * * @return the from clause. */ private String getFromClause() { return "from FLRLFLiefergruppe liefergruppe_one_lf "; } public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP { this.getQuery().setSortKrit(sortierKriterien); QueryResult result = null; int rowNumber = 0; if (selectedId != null && ((Integer) selectedId).intValue() >= 0) { SessionFactory factory = FLRSessionFactory.getFactory(); Session session = null; try { session = factory.openSession(); String queryString = FLR_SELECT + getFromClause() + buildWhereClause() + buildOrderByClause(); Query query = session.createQuery(queryString); ScrollableResults scrollableResult = query.scroll(); if (scrollableResult != null) { scrollableResult.beforeFirst(); while (scrollableResult.next()) { // sortinfo: 1 hier erfolgt der Vergleich, Achtung auf // die Typen! Integer id = (Integer) scrollableResult.getInteger(1); if (selectedId.equals(id)) { rowNumber = scrollableResult.getRowNumber(); break; } } } } catch (Exception e) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, e); } finally { try { session.close(); } catch (HibernateException he) { throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he); } } } if (rowNumber < 0 || rowNumber >= this.getRowCount()) { rowNumber = 0; } result = this.getPageAt(new Integer(rowNumber)); result.setIndexOfSelectedRow(rowNumber); return result; } public TableInfo getTableInfo() { if (super.getTableInfo() == null) { String mandantCNr = theClientDto.getMandant(); Locale locUI = theClientDto.getLocUi(); setTableInfo(new TableInfo(new Class[] { Integer.class, String.class, String.class, }, new String[] { "id_comp.lieferant_i_id", getTextRespectUISpr("lp.kennung", mandantCNr, locUI), getTextRespectUISpr("lp.bezeichnung", mandantCNr, locUI), }, new int[] { QueryParameters.FLR_BREITE_SHARE_WITH_REST, QueryParameters.FLR_BREITE_SHARE_WITH_REST, QueryParameters.FLR_BREITE_SHARE_WITH_REST, }, new String[] { "id_comp.lieferant_i_id", Facade.NICHT_SORTIERBAR, Facade.NICHT_SORTIERBAR })); } return super.getTableInfo(); } }