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.jfinancials.database.product.BaseFinancialsProductDatabaseBean;
  26 import org.mxchange.jproduct.exceptions.product.ProductAlreadyAddedException;
  27 import org.mxchange.jproduct.model.category.Category;
  28
  29 /**
  30  * An administrative stateless session bean for generic products.
  31  * <p>
  32  * @author Roland Häder<roland@mxchange.org>
  33  */
  34 @Stateless (name = "adminProduct", description = "A stateless session bean for general purposes for generic products.")
  35 public class FinancialsAdminGenericProductSessionBean extends BaseFinancialsProductDatabaseBean implements AdminProductSessionBeanRemote {
  36
  37         /**
  38          * Serial number
  39          */
  40         private static final long serialVersionUID = 184_573_667_215_549_811L;
  41
  42         /**
  43          * Regular user bean
  44          */
  45         @EJB (lookup = "java:global/jfinancials-ejb/product!org.mxchange.jproduct.model.product.ProductSessionBeanRemote")
  46         private ProductSessionBeanRemote productBean;
  47
  48         @Override
  49         public Product addGenericProduct (final Product product) throws ProductAlreadyAddedException {
  50                 // Trace message
  51                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.addGenericProduct: product={1} - CALLED!", this.getClass().getSimpleName(), product)); //NOI18N
  52
  53                 // Validate parameter
  54                 if (null == product) {
  55                         // Throw NPE
  56                         throw new NullPointerException("product is null"); //NOI18N
  57                 } else if (product.getProductTitle() == null) {
  58                         // Throw it again
  59                         throw new NullPointerException("product.productTitle is null"); //NOI18N
  60                 } else if (product.getProductTitle().isEmpty()) {
  61                         // Throw it again
  62                         throw new IllegalArgumentException("product.productTitle is empty"); //NOI18N
  63                 } else if (product.getProductId() != null) {
  64                         // Throw IAE
  65                         throw new IllegalArgumentException(MessageFormat.format("product.productId={0} is not expected.", product.getProductId())); //NOI18N
  66                 } else if (this.isProductCreated(product)) {
  67                         // Is already created (by name)
  68                         throw new ProductAlreadyAddedException(product);
  69                 }
  70
  71                 // Is a category set?
  72                 if (product.getProductCategory()instanceof Category) {
  73                         // Then make it managed
  74                         final Category managedCategory = this.createManaged(product.getProductCategory());
  75
  76                         // Set it back
  77                         product.setProductCategory(managedCategory);
  78                 }
  79
  80                 // Set created instance
  81                 product.setProductCreated(new Date());
  82
  83                 // Persist it
  84                 this.getEntityManager().persist(product);
  85
  86                 // Trace message
  87                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.addGenericProduct: product.productId={1} - EXIT!", this.getClass().getSimpleName(), product.getProductId())); //NOI18N
  88
  89                 // Return it
  90                 return product;
  91         }
  92
  93         /**
  94          * Checks if given product is already added by it's title.
  95          * <p>
  96          * @param product Product to check
  97          * <p>
  98          * @return Whether it has been found
  99          */
 100         private boolean isProductCreated (final Product product) {
 101                 // Validate parameter
 102                 if (null == product) {
 103                         // Throw NPE
 104                         throw new NullPointerException("product is null"); //NOI18N
 105                 } else if (product.getProductTitle() == null) {
 106                         // Throw it again
 107                         throw new NullPointerException("product.productTitle is null"); //NOI18N
 108                 } else if (product.getProductTitle().isEmpty()) {
 109                         // Throw it again
 110                         throw new IllegalArgumentException("product.productTitle is empty"); //NOI18N
 111                 } else if (product.getProductId() != null) {
 112                         // Throw IAE
 113                         throw new IllegalArgumentException(MessageFormat.format("product.productId={0} is not expected.", product.getProductId())); //NOI18N
 114                 }
 115
 116                 // Default is not found
 117                 boolean isFound = false;
 118
 119                 // Get full list from other EJB
 120                 final List<Product> list = this.productBean.allProducts();
 121
 122                 // Check each entry
 123                 for (final Product createdProduct : list) {
 124                         // Is same name?
 125                         if (Objects.equals(createdProduct.getProductTitle(), product.getProductTitle())) {
 126                                 // Found it, then stop here
 127                                 isFound = true;
 128                                 break;
 129                         }
 130                 }
 131
 132                 // Return result
 133                 return isFound;
 134         }
 135
 136 }