com.nandhootoo.services.ProductServiceImpl.java Source code

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Here is the source code for com.nandhootoo.services.ProductServiceImpl.java

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/* ********************************************************************************************* 
 *   - - - - - - - - S T R U T S 2 B U I L D E R - - - - - - - -
 *   This file was automatically generated on Tue Sep 10 00:39:54 CST 2013
 *   Struts2Builder 0.5.0 was released on August 28, 2012
 *   Internal Subversion Info:
 *      $Revision: 34 $
 *      $Date: 2012-08-27 11:17:52 -0400 (Mon, 27 Aug 2012) $
 *      $Author: tom $
 *   Struts2Builder is copyright(c) 2009-2012 by
 *       Balata Object Technology
 *       Farmingdale, New York, USA 11735
 *   For more information, please visit http://struts2builder.sourceforge.net
 *   Struts2Builder has been released under the MIT license
 *   You are free to use this software in any project, commercial or non-commercial
 * ********************************************************************************************/
package com.nandhootoo.services;

import java.sql.Timestamp;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Date;

import com.nandhootoo.domain.Product;
import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import org.springframework.transaction.annotation.Transactional;

@Transactional
public class ProductServiceImpl extends AbstractServiceImpl implements ProductService {

    private EntityManager entityManager;

    @PersistenceContext
    public void setEntityManager(EntityManager passedEntityManager) {
        entityManager = passedEntityManager;
    }

    public List getProductsWithCriteria(String criteria) {
        try {
            Query aQuery = entityManager.createQuery("select product from Product as product " + criteria);
            return aQuery.getResultList();
        } catch (Exception sqlex) {
            System.out.println("SQL Exception: " + sqlex.getMessage());
            return null;
        }
    }

    public Product findByKey(Integer product) {
        return entityManager.find(Product.class, product);
    }

    public void persist(Product product) {
        EntityTransaction tx = null;
        try {
            entityManager.persist(product);
        } catch (Exception ex) {
            if (tx != null && tx.isActive())
                tx.rollback();
            throw (RuntimeException) ex.getCause();
        }
    }

    public void merge(Product product) {
        EntityTransaction tx = null;
        try {
            entityManager.merge(product);
        } catch (Exception ex) {
            if (tx != null && tx.isActive())
                tx.rollback();
            throw (RuntimeException) ex.getCause();
        }
    }

    public void delete(Product product) {
        EntityTransaction tx = null;
        this.deleteKey(product.getId());
    }

    public void deleteItems(List<Integer> numbers, List<Product> products) {
        EntityTransaction tx = null;
        int cntr = 0;
        for (Integer anInt : numbers) {
            Product anProduct = products.get(anInt);
            this.deleteKey(anProduct.getId());
            cntr++;
        }
        System.out.println("" + cntr + " products deleted");
    }

    public void deleteKey(Integer id) {
        try {
            String hqlDelete = "delete Product where id = :idString ";
            int deletedEntries = entityManager.createQuery(hqlDelete).setParameter("idString", id).executeUpdate();
        } catch (Exception ex) {
            throw (RuntimeException) ex.getCause();
        }
    }

}