com.lp.server.system.fastlanereader.AutomatikjobHandler.java Source code

Java tutorial

Introduction

Here is the source code for com.lp.server.system.fastlanereader.AutomatikjobHandler.java

Source

/*******************************************************************************
 * 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.system.fastlanereader;

import java.util.Iterator;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.ScrollableResults;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

import com.lp.server.system.fastlanereader.generated.FLRAutomatikjob;
import com.lp.server.system.service.AutomatikjobFac;
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;

public class AutomatikjobHandler extends UseCaseHandler {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public static final String FLR_AUTOMATIKJOB = "FLRAutomatikjob.";
    public static final String FLR_AUTOMATIKJOB_FROM_CLAUSE = " from FLRAutomatikjob as automatikjob ";

    public AutomatikjobHandler() {
        super();
    }

    /**
     * gets the page of data for the specified row using the current
     * queryParameters.
     * 
     * @param rowIndex
     *            the index of the row that should be contained in the page.
     * @return the data page for the specified row.
     * @throws EJBExceptionLP
     * @todo Diese com.lp.server.util.fastlanereader.UseCaseHandler-Methode
     *       implementieren
     */
    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 = AutomatikjobHandler.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()) {
                FLRAutomatikjob automatikjob = (FLRAutomatikjob) resultListIterator.next();
                rows[row][col++] = automatikjob.getI_id();
                rows[row][col++] = automatikjob.getI_sort();
                rows[row][col++] = automatikjob.getC_name();
                rows[row][col++] = automatikjob.getC_beschreibung();
                rows[row][col++] = automatikjob.getI_intervall();
                if (automatikjob.getB_active().equals("1")) {
                    rows[row][col++] = new Boolean(true);
                } else {
                    rows[row][col++] = new Boolean(false);
                }
                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;

    }

    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(" automatikjob." + filterKriterien[i].kritName);
                    where.append(" " + filterKriterien[i].operator);
                    where.append(" " + filterKriterien[i].value);
                }
            }
            if (filterAdded) {
                where.insert(0, " WHERE");
            }
        }
        return where.toString();
    }

    private String buildOrderByClause() {
        StringBuffer orderBy = new StringBuffer("");
        if (this.getQuery() != null) {
            SortierKriterium[] kriterien = this.getQuery().getSortKrit();
            kriterien = null;
            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("automatikjob." + kriterien[i].kritName);
                            orderBy.append(" ");
                            orderBy.append(kriterien[i].value);
                        }
                    }
                }
            } else {
                // no sort criteria found, add default sort
                if (sortAdded) {
                    orderBy.append(", ");
                }
                orderBy.append("automatikjob.i_sort ASC ");
                sortAdded = true;
            }
            if (orderBy.indexOf("automatikjob.i_sort") < 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(" automatikjob.i_sort ");
                sortAdded = true;
            }
            if (sortAdded) {
                orderBy.insert(0, " ORDER BY ");
            }
        }
        return " ORDER BY automatikjob.i_sort ASC ";
    }

    private String getFromClause() {
        return "from FLRAutomatikjob as automatikjob ";
    }

    /**
     * gets the total number of rows available using the current query.
     * 
     * @return the number of rows in the query.
     * @todo Diese com.lp.server.util.fastlanereader.UseCaseHandler-Methode
     *       implementieren
     */
    protected long getRowCountFromDataBase() {
        long rowCount = 0;
        SessionFactory factory = FLRSessionFactory.getFactory();
        Session session = null;
        try {
            session = factory.openSession();
            String queryString = "select count(*) " + this.getFromClause() + 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, e);
        } finally {
            if (session != null) {
                try {
                    session.close();
                } catch (HibernateException he) {
                    throw new EJBExceptionLP(EJBExceptionLP.FEHLER, he);
                }
            }
        }
        return rowCount;
    }

    /**
     * sorts the data of the current query using the specified criterias and
     * returns the page of data where the row of selectedId is contained.
     * 
     * @param sortierKriterien
     *            the new sort criterias.
     * @param selectedId
     *            the id of the entity that should be included in the result
     *            page.
     * @return the sorted data containing the page where the entity with the
     *         specified id is located.
     * @throws EJBExceptionLP
     * @todo Diese com.lp.server.util.fastlanereader.UseCaseHandler-Methode
     *       implementieren
     */
    public QueryResult sort(SortierKriterium[] sortierKriterien, Object selectedId) throws EJBExceptionLP {
        QueryResult result = null;

        try {
            int rowNumber = 0;
            // Damit immer nach iSort sortiert wird.
            selectedId = null;
            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_AUTOMATIKJOB + "i_sort" + FLR_AUTOMATIKJOB_FROM_CLAUSE
                            + this.buildWhereClause() + this.buildOrderByClause();
                    Query query = session.createQuery(queryString);
                    ScrollableResults scrollableResult = query.scroll();
                    boolean idFound = false;
                    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) {
            setTableInfo(new TableInfo(
                    new Class[] { Integer.class, Integer.class, String.class, String.class, Integer.class,
                            Boolean.class, },
                    new String[] { "i_id",
                            getTextRespectUISpr("lp.automatik.ablauf", theClientDto.getMandant(),
                                    theClientDto.getLocUi()),
                            getTextRespectUISpr("lp.automatik.name", theClientDto.getMandant(),
                                    theClientDto.getLocUi()),
                            getTextRespectUISpr("lp.automatik.beschreibung", theClientDto.getMandant(),
                                    theClientDto.getLocUi()),
                            getTextRespectUISpr("lp.automatik.intervall", theClientDto.getMandant(),
                                    theClientDto.getLocUi()),
                            getTextRespectUISpr("lp.automatik.aktiv", theClientDto.getMandant(),
                                    theClientDto.getLocUi()), },
                    new int[] { QueryParameters.FLR_BREITE_SHARE_WITH_REST, // diese
                            // Spalte
                            // wird
                            // ausgeblendet
                            QueryParameters.FLR_BREITE_M, QueryParameters.FLR_BREITE_M,
                            QueryParameters.FLR_BREITE_SHARE_WITH_REST, QueryParameters.FLR_BREITE_M,
                            QueryParameters.FLR_BREITE_M, },
                    new String[] { AutomatikjobFac.FLR_AUTOMATIKJOB_I_ID, AutomatikjobFac.FLR_AUTOMATIKJOB_I_SORT,
                            AutomatikjobFac.FLR_AUTOMATIKJOB_C_NAME,
                            AutomatikjobFac.FLR_AUTOMATIKJOB_C_BESCHREIBUNG,
                            AutomatikjobFac.FLR_AUTOMATIKJOB_I_INTERVALL,
                            AutomatikjobFac.FLR_AUTOMATIKJOB_B_ACTIVE, }));
        }

        return super.getTableInfo();
    }
}