src/java/org/mxchange/jproduct/model/product/FinancialsAdminGenericProductSessionBean.java

   1 /*
   2  * Copyright (C) 2017 Roland Häder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.jproduct.model.product;
  18
  19 import java.text.MessageFormat;
  20 import java.util.Date;
  21 import java.util.List;
  22 import java.util.Objects;
  23 import javax.ejb.EJB;
  24 import javax.ejb.Stateless;
  25 import org.mxchange.jcontactsbusiness.model.basicdata.BasicData;
  26 import org.mxchange.jfinancials.database.product.BaseFinancialsProductDatabaseBean;
  27 import org.mxchange.jproduct.exceptions.product.ProductAlreadyAddedException;
  28 import org.mxchange.jproduct.model.category.Category;
  29
  30 /**
  31  * An administrative stateless session bean for generic products.
  32  * <p>
  33  * @author Roland Häder<roland@mxchange.org>
  34  */
  35 @Stateless (name = "adminProduct", description = "A stateless session bean for general purposes for generic products.")
  36 public class FinancialsAdminGenericProductSessionBean extends BaseFinancialsProductDatabaseBean implements AdminProductSessionBeanRemote {
  37
  38         /**
  39          * Serial number
  40          */
  41         private static final long serialVersionUID = 184_573_667_215_549_811L;
  42
  43         /**
  44          * Regular user bean
  45          */
  46         @EJB (lookup = "java:global/jfinancials-ejb/product!org.mxchange.jproduct.model.product.ProductSessionBeanRemote")
  47         private ProductSessionBeanRemote productBean;
  48
  49         @Override
  50         public Product addGenericProduct (final Product product) throws ProductAlreadyAddedException {
  51                 // Trace message
  52                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.addGenericProduct: product={1} - CALLED!", this.getClass().getSimpleName(), product)); //NOI18N
  53
  54                 // Validate parameter
  55                 if (null == product) {
  56                         // Throw NPE
  57                         throw new NullPointerException("product is null"); //NOI18N
  58                 } else if (product.getProductTitle() == null) {
  59                         // Throw it again
  60                         throw new NullPointerException("product.productTitle is null"); //NOI18N
  61                 } else if (product.getProductTitle().isEmpty()) {
  62                         // Throw it again
  63                         throw new IllegalArgumentException("product.productTitle is empty"); //NOI18N
  64                 } else if (product.getProductId() != null) {
  65                         // Throw IAE
  66                         throw new IllegalArgumentException(MessageFormat.format("product.productId={0} is not expected.", product.getProductId())); //NOI18N
  67                 } else if (product.getProductCategory() == null) {
  68                         // Throw NPE
  69                         throw new NullPointerException("product.productCategory is null"); //NOI18N
  70                 } else if (product.getProductCategory().getCategoryId() == null) {
  71                         // Throw NPE
  72                         throw new NullPointerException("product.productCategory.categoryId is null"); //NOI18N
  73                 } else if (product.getProductCategory().getCategoryId() < 1) {
  74                         // Throw IAE
  75                         throw new IllegalArgumentException(MessageFormat.format("product.productCategory.categoryId={0} is invalid", product.getProductCategory().getCategoryId())); //NOI18N
  76                 } else if ((product.getProductManfacturer() instanceof BasicData) && (product.getProductManfacturer().getBasicDataId() == null)) {
  77                         // Throw NPE
  78                         throw new NullPointerException("product.productManufacturer.basicDataId is null"); //NOI18N
  79                 } else if ((product.getProductManfacturer() instanceof BasicData) && (product.getProductManfacturer().getBasicDataId() < 1)) {
  80                         // Throw IAE
  81                         throw new IllegalArgumentException(MessageFormat.format("product.productManufacturer.basicDataId={0} is invalid", product.getProductManfacturer().getBasicDataId())); //NOI18N
  82                 } else if (this.isProductCreated(product)) {
  83                         // Is already created (by name)
  84                         throw new ProductAlreadyAddedException(product);
  85                 }
  86
  87                 // Created a managed instance from product's category
  88                 final Category managedCategory = this.createManaged(product.getProductCategory());
  89
  90                 // Set it back
  91                 product.setProductCategory(managedCategory);
  92
  93                 // Is a manufacturer (basic_data entity) set?
  94                 if (product.getProductManfacturer() instanceof BasicData) {
  95                         // Get managed instance from it
  96                         final BasicData managedBasicData = this.createManaged(product.getProductManfacturer());
  97
  98                         // Set it back
  99                         product.setProductManfacturer(managedBasicData);
 100                 }
 101
 102                 // Set created instance
 103                 product.setProductCreated(new Date());
 104
 105                 // Persist it
 106                 this.getEntityManager().persist(product);
 107
 108                 // Trace message
 109                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.addGenericProduct: product.productId={1} - EXIT!", this.getClass().getSimpleName(), product.getProductId())); //NOI18N
 110
 111                 // Return it
 112                 return product;
 113         }
 114
 115         /**
 116          * Checks if given product is already added by it's title.
 117          * <p>
 118          * @param product Product to check
 119          * <p>
 120          * @return Whether it has been found
 121          */
 122         private boolean isProductCreated (final Product product) {
 123                 // Validate parameter
 124                 if (null == product) {
 125                         // Throw NPE
 126                         throw new NullPointerException("product is null"); //NOI18N
 127                 } else if (product.getProductTitle() == null) {
 128                         // Throw it again
 129                         throw new NullPointerException("product.productTitle is null"); //NOI18N
 130                 } else if (product.getProductTitle().isEmpty()) {
 131                         // Throw it again
 132                         throw new IllegalArgumentException("product.productTitle is empty"); //NOI18N
 133                 } else if (product.getProductId() != null) {
 134                         // Throw IAE
 135                         throw new IllegalArgumentException(MessageFormat.format("product.productId={0} is not expected.", product.getProductId())); //NOI18N
 136                 }
 137
 138                 // Default is not found
 139                 boolean isFound = false;
 140
 141                 // Get full list from other EJB
 142                 final List<Product> list = this.productBean.allProducts();
 143
 144                 // Check each entry
 145                 for (final Product createdProduct : list) {
 146                         // Is same name?
 147                         if (Objects.equals(createdProduct.getProductTitle(), product.getProductTitle())) {
 148                                 // Found it, then stop here
 149                                 isFound = true;
 150                                 break;
 151                         }
 152                 }
 153
 154                 // Return result
 155                 return isFound;
 156         }
 157
 158 }