Oddzielna klasa RProductsJSON

PC34-RestSerwer/src/main/java/sklep/rest/RProductsJSON.java

+package sklep.rest;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+
+import sklep.db.DBConnection;
+import sklep.db.DBException;
+import sklep.db.ProductDAO;
+import sklep.db.RecordNotFound;
+import sklep.model.Product;
+import sklep.photo.PhotoUtil;
+
+// W tej wersji dane rekordów są udostępniane i pobierane w formacie JSON. Tylko zdjęcia są w formacie JPEG.
+
+@Path("/products.json")
+public class RProductsJSON {
+
+	@GET
+	@Produces("application/json")
+	public List<Product> readAll() throws DBException {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			return productDAO.readAll();
+		}
+	}
+	
+	@GET
+	@Produces("application/json")
+	@Path("/{id}")
+	public Product readOne(@PathParam("id") int productId) throws DBException, RecordNotFound {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			return productDAO.findById(productId);
+		}
+	}
+	
+	@GET
+	@Produces("application/json")
+	@Path("/{id}/price")
+	public BigDecimal getPrice(@PathParam("id") int productId) throws DBException, RecordNotFound {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			Product product = productDAO.findById(productId);
+			return product.getPrice();
+		}
+	}
+	
+	@PUT
+	@Consumes("application/json")
+	@Path("/{id}/price")
+	public void setPrice(@PathParam("id") int productId, BigDecimal newPrice) throws DBException, RecordNotFound {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			Product product = productDAO.findById(productId);
+			product.setPrice(newPrice);
+			productDAO.update(product);
+			db.commit();
+		}
+	}
+	
+	@POST
+	@Consumes("application/json")
+	@Produces("application/json")
+	public Product addProduct(Product product) throws DBException {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			if(product.getProductId() != null) {
+				throw new IllegalArgumentException("Nowy produkt nie może mieć ustawionego ID");
+			}
+			productDAO.insertNew(product);
+			db.commit();
+			return product;
+		}
+	}
+	
+	@DELETE
+	@Path("/{id}")
+	public void removeProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
+		try(DBConnection db = DBConnection.open()) {
+			ProductDAO productDAO = db.productDAO();
+			if(productDAO.delete(productId)) {
+				db.commit();
+			} else {
+				throw new RecordNotFound("Nie ma produktu nr " + productId);
+			}
+		}
+	}
+	
+	@GET
+	@Path("/{id}/photo")
+	@Produces("image/jpeg")
+	public byte[] getPhoto(@PathParam("id") int productId) throws DBException, RecordNotFound {
+		return PhotoUtil.readBytes(productId);
+	}
+
+}