#53 Implemented SQLite product data persistence + tests

src/main/java/de/rwu/easydrop/service/mapping/ProductMapper.java

@@ -1,16 +1,17 @@
 package de.rwu.easydrop.service.mapping;
 
 import de.rwu.easydrop.api.dto.ProductDTO;
+
 import de.rwu.easydrop.model.Product;
 
 /**
- * Maps between Product, ProductDAO and ProductDTO.
+ * Maps between Product, ProductDTO and ProductDTO.
  *
  * @since 0.2.0
  *
  * @see Product
  * @see ProductDTO
- * @see ProductDAO
+ * @see ProductDTO
  */
 public final class ProductMapper {
 
@@ -41,4 +42,21 @@ public final class ProductMapper {
 
         return product;
     }
+
+    /**
+     * Creates a ProductDTO object from a corresponding Product.
+     *
+     * @param product Product
+     * @return ProductDTO
+     */
+    public static ProductDTO mapProductToDTO(final Product product) {
+        ProductDTO dto = new ProductDTO(product.getProductId(), product.getDataOrigin());
+
+        dto.setAvailable(product.isAvailable());
+        dto.setCurrentPrice(product.getCurrentPrice());
+        dto.setDeliveryPrice(product.getDeliveryPrice());
+        dto.setMerchant(product.getMerchant());
+
+        return dto;
+    }
 }

src/main/java/de/rwu/easydrop/service/retriever/CatalogueRetriever.java

@@ -5,6 +5,7 @@ import java.util.List;
 
 import javax.naming.ConfigurationException;
 
+import de.rwu.easydrop.exception.InvalidProductException;
 import de.rwu.easydrop.model.Product;
 import de.rwu.easydrop.model.ProductCatalogue;
 import de.rwu.easydrop.util.ProductsConfig;
@@ -60,10 +61,12 @@ public class CatalogueRetriever {
                 newProduct.setDataOrigin(product.getDataOrigin());
                 newProduct.setProductId(product.getProductId());
 
-                if (product.getDataOrigin().equals("Amazon")) {
+                if (newProduct.getDataOrigin().equals("Amazon")) {
                     newProduct = productRetriever.getProductFromAmazon(product.getProductId());
-                } else if (product.getDataOrigin().equals("eBay")) {
+                } else if (newProduct.getDataOrigin().equals("eBay")) {
                     newProduct = productRetriever.getProductFromEbay(product.getProductId());
+                } else {
+                    throw new InvalidProductException("Product data origin is invalid");
                 }
 
                 newProductCatalogue.addProduct(newProduct);

src/main/java/de/rwu/easydrop/service/retriever/ProductRetriever.java

@@ -4,6 +4,7 @@ import de.rwu.easydrop.api.client.AmazonProductDataSource;
 import de.rwu.easydrop.api.client.DataSourceFactory;
 import de.rwu.easydrop.api.client.EbayItemDataSource;
 import de.rwu.easydrop.api.dto.ProductDTO;
+import de.rwu.easydrop.data.connector.AbstractProductPersistence;
 import de.rwu.easydrop.model.Product;
 import de.rwu.easydrop.service.mapping.ProductMapper;
 import de.rwu.easydrop.service.validation.ProductValidator;
@@ -64,4 +65,20 @@ public class ProductRetriever {
 
         return product;
     }
+
+    /**
+     * Retrieves a product from persistence.
+     *
+     * @param productId
+     * @return Product from persistence
+     */
+    public Product getProductFromPersistence(final String productId) {
+        AbstractProductPersistence src = dataSourceFactory.createProductPersistenceDataSource();
+
+        ProductDTO dto = src.getProductDTOById(productId);
+        Product product = ProductMapper.mapProductFromDTO(dto);
+        ProductValidator.validate(product);
+
+        return product;
+    }
 }

src/main/java/de/rwu/easydrop/service/writer/CatalogueWriter.java

@@ -0,0 +1,47 @@
+package de.rwu.easydrop.service.writer;
+
+import java.util.List;
+
+import de.rwu.easydrop.api.dto.ProductDTO;
+import de.rwu.easydrop.data.connector.AbstractProductPersistence;
+import de.rwu.easydrop.model.Product;
+import de.rwu.easydrop.model.ProductCatalogue;
+import de.rwu.easydrop.service.mapping.ProductMapper;
+import de.rwu.easydrop.service.validation.ProductValidator;
+
+/**
+ * Writes data for all products of multiple catalogues to persistence.
+ *
+ * @since 0.2.0
+ */
+public final class CatalogueWriter {
+    /**
+     * Holds a persistence reference.
+     */
+    private AbstractProductPersistence persistence;
+
+    /**
+     * Creates new instance.
+     *
+     * @param newPersistence
+     */
+    public CatalogueWriter(final AbstractProductPersistence newPersistence) {
+        persistence = newPersistence;
+    }
+
+    /**
+     * Writes all products of specified catalogues to persistence.
+     *
+     * @param catalogues
+     */
+    public void writeCatalogues(final List<ProductCatalogue> catalogues) {
+        for (ProductCatalogue pCat : catalogues) {
+            for (Product product : pCat.getProducts()) {
+                ProductValidator.validate(product);
+                ProductDTO dto = ProductMapper.mapProductToDTO(product);
+
+                persistence.saveProduct(dto);
+            }
+        }
+    }
+}

src/main/java/de/rwu/easydrop/service/writer/ProductWriter.java

@@ -0,0 +1,38 @@
+package de.rwu.easydrop.service.writer;
+
+import de.rwu.easydrop.api.dto.ProductDTO;
+import de.rwu.easydrop.data.connector.AbstractProductPersistence;
+import de.rwu.easydrop.model.Product;
+import de.rwu.easydrop.service.mapping.ProductMapper;
+import de.rwu.easydrop.service.validation.ProductValidator;
+
+/**
+ * Wrapper for writing product info to persistence.
+ *
+ * @since 0.2.0
+ */
+public class ProductWriter {
+    /**
+     * Persistence.
+     */
+    private AbstractProductPersistence persistence;
+
+    /**
+     * @param newPersistence the persistence to set
+     */
+    public void setPersistence(final AbstractProductPersistence newPersistence) {
+        this.persistence = newPersistence;
+    }
+
+    /**
+     * Validates and saves product to persistence.
+     *
+     * @param product
+     */
+    public void writeProductToPersistence(final Product product) {
+        ProductValidator.validate(product);
+        ProductDTO dto = ProductMapper.mapProductToDTO(product);
+
+        persistence.saveProduct(dto);
+    }
+}

src/main/java/de/rwu/easydrop/service/writer/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Writes Objects to a data store.
+ *
+ * @since 0.2.0
+ */
+package de.rwu.easydrop.service.writer;