spring-action: implementing embedded DBB

Author: MarioCodes

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/config/SpringConfig.java

@@ -0,0 +1,11 @@
+package es.msanchez.spring.springinaction.config;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan(basePackages = {
+        "es.msanchez.spring.springinaction.**"
+})
+public class SpringConfig {
+}

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/controllers/DesignTacoController.java

@@ -1,27 +1,54 @@
 package es.msanchez.spring.springinaction.controllers;
 
+import es.msanchez.spring.springinaction.dao.IngredientRepository;
+import es.msanchez.spring.springinaction.dao.TacoRepository;
 import es.msanchez.spring.springinaction.entities.Ingredient;
+import es.msanchez.spring.springinaction.entities.Order;
 import es.msanchez.spring.springinaction.entities.Taco;
 import es.msanchez.spring.springinaction.enums.Type;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
+import org.springframework.util.CollectionUtils;
 import org.springframework.validation.Errors;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ModelAttribute;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.*;
 
 import javax.validation.Valid;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Collectors;
 
 @Slf4j
 @Controller
 @RequestMapping("/design")
+@SessionAttributes("order")
 public class DesignTacoController {
 
+    private final IngredientRepository ingredientRepository;
+    private final TacoRepository tacoRepository;
+
+    /**
+     * @param ingredientRepository injected
+     * @param tacoRepository       injected
+     */
+    @Autowired
+    public DesignTacoController(IngredientRepository ingredientRepository, TacoRepository tacoRepository) {
+        this.ingredientRepository = ingredientRepository;
+        this.tacoRepository = tacoRepository;
+    }
+
+    @ModelAttribute(name = "order")
+    public Order order() {
+        return new Order();
+    }
+
+    @ModelAttribute(name = "taco")
+    public Taco taco() {
+        return new Taco();
+    }
+
     /**
      * This is going to be loaded every time we load for "design" view.
      *
@@ -30,16 +57,16 @@ public class DesignTacoController {
     @ModelAttribute
     public void addIngredientsToModel(final Model model) {
         final List<Ingredient> ingredients = Arrays.asList(
-            new Ingredient("FLTO", "Flour tortilla", Type.WRAP),
-            new Ingredient("COTO", "Corn tortilla", Type.WRAP),
-            new Ingredient("GRBF", "Ground Beef", Type.PROTEIN),
-            new Ingredient("CARN", "Carnitas", Type.PROTEIN),
-            new Ingredient("TMTO", "Diced tomatoes", Type.VEGGIES),
-            new Ingredient("LETC", "Lettuce", Type.VEGGIES),
-            new Ingredient("CHED", "Ceddar", Type.CHEESE),
-            new Ingredient("JACK", "Monterrey Jack", Type.CHEESE),
-            new Ingredient("SLSA", "Salsa", Type.SAUCE),
-            new Ingredient("SRCR", "Sour cream", Type.SAUCE));
+                new Ingredient("FLTO", "Flour tortilla", Type.WRAP),
+                new Ingredient("COTO", "Corn tortilla", Type.WRAP),
+                new Ingredient("GRBF", "Ground Beef", Type.PROTEIN),
+                new Ingredient("CARN", "Carnitas", Type.PROTEIN),
+                new Ingredient("TMTO", "Diced tomatoes", Type.VEGGIES),
+                new Ingredient("LETC", "Lettuce", Type.VEGGIES),
+                new Ingredient("CHED", "Ceddar", Type.CHEESE),
+                new Ingredient("JACK", "Monterrey Jack", Type.CHEESE),
+                new Ingredient("SLSA", "Salsa", Type.SAUCE),
+                new Ingredient("SRCR", "Sour cream", Type.SAUCE));
 
         for (final Type type : Type.values()) {
             model.addAttribute(type.toString().toLowerCase(), filterByType(ingredients, type));
@@ -48,19 +75,29 @@ public void addIngredientsToModel(final Model model) {
 
     @GetMapping
     public String showDesignForm(final Model model) {
-        model.addAttribute("design", new Taco());
+        final List<Ingredient> ingredients = new ArrayList<>();
+        this.ingredientRepository.findAll().forEach(ingredients::add);
+
+        final List<Type> types = CollectionUtils.arrayToList(Type.values());
+        for (final Type type : types) {
+            model.addAttribute(type.toString().toLowerCase(),
+                    filterByType(ingredients, type));
+        }
+
         return "design";
     }
 
     @PostMapping
     public String processDesign(@Valid @ModelAttribute("design") final Taco design,
-                                    final Errors errors,
-                                    final Model model) {
+                                final Errors errors,
+                                @ModelAttribute final Order order) {
         if (errors.hasErrors()) {
             log.error("Errors found on processDesign()");
             return "design";
         }
 
+        final Taco saved = this.tacoRepository.save(design);
+
         log.info("processing design '{}'", design);
         return "redirect:/orders/current";
     }

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/dao/IngredientRepository.java

@@ -0,0 +1,15 @@
+package es.msanchez.spring.springinaction.dao;
+
+import es.msanchez.spring.springinaction.entities.Ingredient;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface IngredientRepository {
+
+    Iterable<Ingredient> findAll();
+
+    Ingredient findOne(final String id);
+
+    Ingredient save(final Ingredient ingredient);
+
+}

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/dao/JdbcIngredientRepository.java

@@ -0,0 +1,52 @@
+package es.msanchez.spring.springinaction.dao;
+
+import es.msanchez.spring.springinaction.entities.Ingredient;
+import es.msanchez.spring.springinaction.enums.Type;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Repository;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+@Repository
+public class JdbcIngredientRepository implements IngredientRepository {
+
+    private JdbcTemplate jdbcTemplate;
+
+    /**
+     * @param jdbcTemplate -
+     */
+    @Autowired
+    public JdbcIngredientRepository(final JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    @Override
+    public Iterable<Ingredient> findAll() {
+        return this.jdbcTemplate.query("select id, name, type from Ingredient", this::mapRowToIngredient);
+    }
+
+    private Ingredient mapRowToIngredient(final ResultSet rs,
+                                          final int rowNum) throws SQLException {
+        return new Ingredient(rs.getString("id"),
+                rs.getString("name"),
+                Type.valueOf(rs.getString("type")));
+    }
+
+    @Override
+    public Ingredient findOne(final String id) {
+        return this.jdbcTemplate.queryForObject("select id, name, type from Ingredient where id = ?",
+                this::mapRowToIngredient, id);
+    }
+
+    @Override
+    public Ingredient save(final Ingredient ingredient) {
+        this.jdbcTemplate.update("insert into Ingredient (id, name, type) values (?, ?, ?)",
+                ingredient.getId(),
+                ingredient.getName(),
+                ingredient.getType().toString());
+        return ingredient;
+    }
+
+}

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/dao/JdbcTacoRepository.java

@@ -0,0 +1,55 @@
+package es.msanchez.spring.springinaction.dao;
+
+import es.msanchez.spring.springinaction.entities.Ingredient;
+import es.msanchez.spring.springinaction.entities.Taco;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.PreparedStatementCreator;
+import org.springframework.jdbc.core.PreparedStatementCreatorFactory;
+import org.springframework.jdbc.support.GeneratedKeyHolder;
+import org.springframework.jdbc.support.KeyHolder;
+import org.springframework.stereotype.Repository;
+
+import java.sql.Date;
+import java.sql.Timestamp;
+import java.sql.Types;
+import java.time.LocalDate;
+import java.util.Arrays;
+
+@Repository
+public class JdbcTacoRepository implements TacoRepository {
+
+    private final JdbcTemplate jdbc;
+
+    @Autowired
+    public JdbcTacoRepository(final JdbcTemplate jdbc) {
+        this.jdbc = jdbc;
+    }
+
+    @Override
+    public Taco save(final Taco taco) {
+        final long tacoId = this.saveTacoInfo(taco);
+        taco.setId(tacoId);
+        taco.getIngredients().forEach(ing -> this.saveIngredientToTaco(ing, tacoId));
+        return taco;
+    }
+
+    private void saveIngredientToTaco(final Ingredient ingredient,
+                                      final long tacoId) {
+        this.jdbc.update("insert into Taco_Ingredients (taco, ingredient) values (?, ?)",
+                tacoId, ingredient.getId());
+    }
+
+    private long saveTacoInfo(final Taco taco) {
+        taco.setCreatedAt(Date.valueOf(LocalDate.now()));
+        final PreparedStatementCreator psc = new PreparedStatementCreatorFactory(
+                "insert into Taco (name, createdAt) values (?,?)",
+                Types.VARCHAR, Types.TIMESTAMP
+        ).newPreparedStatementCreator(Arrays.asList(taco.getName(),
+                new Timestamp(taco.getCreatedAt().getTime())));
+
+        final KeyHolder keyHolder = new GeneratedKeyHolder();
+        this.jdbc.update(psc, keyHolder);
+        return keyHolder.getKey().longValue();
+    }
+}

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/dao/OrderRepository.java

@@ -0,0 +1,9 @@
+package es.msanchez.spring.springinaction.dao;
+
+import es.msanchez.spring.springinaction.entities.Order;
+
+public interface OrderRepository {
+
+    public Order save(final Order order);
+
+}

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/dao/TacoRepository.java

@@ -0,0 +1,9 @@
+package es.msanchez.spring.springinaction.dao;
+
+import es.msanchez.spring.springinaction.entities.Taco;
+
+public interface TacoRepository {
+
+    public Taco save(final Taco taco);
+
+}

spring/spring-in-action/src/main/java/es/msanchez/spring/springinaction/entities/Taco.java

@@ -19,6 +19,6 @@ public class Taco {
     private String name;
 
     @Size(min = 1, message = "You must select at least 1 ingredient")
-    private List<String> ingredients;
+    private List<Ingredient> ingredients;
 
 }