Implement initial REST support

Signed-off-by: Pekka Helenius <fincer89@hotmail.com>

bookstore/src/main/java/com/fjordtek/bookstore/model/Book.java

@@ -24,6 +24,7 @@ import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.Pattern;
 import javax.validation.constraints.Size;
 
+import com.fasterxml.jackson.annotation.JsonManagedReference;
 import com.fjordtek.bookstore.annotation.CurrentYear;
 
 @Entity
@@ -153,6 +154,7 @@ public class Book {
 			)
 	private BigDecimal price;
 
+	@JsonManagedReference
 	@ManyToOne(
 			//fetch    = FetchType.LAZY,
 			optional = false

bookstore/src/main/java/com/fjordtek/bookstore/model/Category.java

@@ -11,6 +11,8 @@ import javax.persistence.Id;
 import javax.persistence.OneToMany;
 import javax.persistence.SequenceGenerator;
 
+import com.fasterxml.jackson.annotation.JsonBackReference;
+
 @Entity
 public class Category {
 
@@ -31,6 +33,7 @@ public class Category {
 	// Attributes with hard-coded constraints
 	private String name;
 
+	@JsonBackReference
 	@OneToMany(
 			mappedBy     = "category"
 			//fetch      = FetchType.LAZY,

bookstore/src/main/java/com/fjordtek/bookstore/web/BookController.java

@@ -46,6 +46,8 @@ public class BookController {
 	@Autowired
 	private CategoryRepository   categoryRepository;
 
+	private static final String RestJSONPageView      = "json";
+
 	private static final String landingPageView       = "index";
 	private static final String bookListPageView      = "booklist";
 	private static final String bookAddPageView       = "bookadd";
@@ -55,6 +57,8 @@ public class BookController {
 	private Map<String,String> globalModelMap = new HashMap<String,String>() {
 		private static final long serialVersionUID = 1L;
 	{
+		put("restpage",   RestJSONPageView);
+
 		put("indexpage",  landingPageView);
 		put("listpage",   bookListPageView);
 		put("addpage",    bookAddPageView);

bookstore/src/main/java/com/fjordtek/bookstore/web/BookRestController.java

@@ -0,0 +1,60 @@
+package com.fjordtek.bookstore.web;
+
+import java.util.Optional;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.fjordtek.bookstore.model.Book;
+import com.fjordtek.bookstore.model.BookRepository;
+
+@RestController
+@RequestMapping("json")
+public class BookRestController {
+
+	@Autowired
+	private BookRepository       bookRepository;
+/*
+	@Autowired
+	private CategoryRepository   categoryRepository;
+*/
+
+	private HttpServerLogger     httpServerLogger     = new HttpServerLogger();
+
+	@RequestMapping(
+			value  = "booklist",
+			method = RequestMethod.GET
+			)
+	public @ResponseBody Iterable<Book> getAllBooksRestData(
+			HttpServletRequest requestData,
+			HttpServletResponse responseData
+			) {
+
+		httpServerLogger.log(requestData, responseData);
+
+		return bookRepository.findAll();
+	}
+
+	@RequestMapping(
+			value  = "book" + "/{id}",
+			method = RequestMethod.GET
+			)
+	public @ResponseBody Optional<Book> getBookRestData(
+			@PathVariable("id") Long bookId,
+			HttpServletRequest requestData,
+			HttpServletResponse responseData
+			) {
+
+		httpServerLogger.log(requestData, responseData);
+
+		return bookRepository.findById(bookId);
+	}
+
+}

bookstore/src/main/resources/application.properties

@@ -12,6 +12,12 @@ spring.datasource.url=jdbc:h2:mem:testdb
 
 spring.jpa.show-sql=true
 
+# REST API direct api URL ref
+spring.data.rest.base-path=/api
+
+
+
+
 # Ref: https://docs.spring.io/spring-boot/docs/1.2.0.M2/reference/html/common-application-properties.html
 
 # # EMBEDDED SERVER CONFIGURATION (ServerProperties)

bookstore/src/main/resources/messages.properties

@@ -12,6 +12,7 @@ book.isbn                    = ISBN
 book.year                    = Year
 book.price                   = Price
 book.category                = Category
+book.json                    = JSON Data
 
 book.desc.set.author         = Set book author name
 book.desc.set.title          = Set book primary title
@@ -32,6 +33,8 @@ book.error.title             = Invalid title
 book.error.isbn              = Invalid ISBN code
 book.error.year              = Invalid year
 book.error.price             = Invalid price
+book.error.isbn.exists       = ISBN code already exists
+book.error.id.invalid        = Wrong book
                         
 page.title.browser.list      = Bookstore page
 page.title.browser.add       = Add book
@@ -46,6 +49,7 @@ page.title.webform.error     = Error
 page.text.list.actions       = Actions
 page.text.list.delete        = Delete
 page.text.list.edit          = Edit
+page.text.list.json          = Get
 
 page.text.error              = Error while processing your request
 
@@ -53,5 +57,6 @@ button.book.add              = Add book
 button.book.edit             = Update book
 
 button.page.list.return      = Return to book list page
+button.page.list.json        = Get list as JSON
 
 page.symbols.currency        = \u20AC

bookstore/src/main/resources/templates/booklist.html

@@ -29,6 +29,7 @@
 				<th th:text="${#messages.msgOrNull('book.price')} ?: 'book.price'">book.price</th>
 				<th th:text="${#messages.msgOrNull('page.text.list.actions')} ?: 'page.text.list.actions'">page.text.list.actions</th>
 				<th></th>
+				<th th:text="${#messages.msgOrNull('book.json')} ?: 'book.json'">book.json</th>
 			</tr>
 
 			<tr th:each="book : ${books}">
@@ -57,15 +58,40 @@
 					page.text.list.edit
 					</a>
 				</td>
+				
+				<td>
+					<a class="btn btn-info"
+					th:href="@{__${restpage}__/book/{id}(id=${book.id})}"
+					th:text="${#messages.msgOrNull('page.text.list.json')} ?: 'page.text.list.json'">
+					page.text.list.json
+					</a>
+				</td>
+
+			</tr>
 
+			<tr>
+				<td>
+					<a class="btn btn-success" th:href="@{__${addpage}__}"
+					th:text="${#messages.msgOrNull('button.book.add')} ?: 'button.book.add'">
+					button.book.add
+					</a>
+				</td>
+				<th></th>
+				<th></th>
+				<th></th>
+				<th></th>
+				<th></th>
+				<th></th>
+				<th></th>
+				<td>
+					<a class="btn btn-dark" th:href="@{__${restpage}__} + '/' + @{__${listpage}__}"
+					th:text="${#messages.msgOrNull('button.page.list.json')} ?: 'button.page.list.json'">
+					button.page.list.json
+					</a>
+				</td>
 			</tr>
+
 		</table>
-		<div>
-			<a class="btn btn-success" th:href="@{__${addpage}__}"
-			th:text="${#messages.msgOrNull('button.book.add')} ?: 'button.book.add'">
-			button.book.add
-			</a>
-		</div>
 	</div>
 </body>
 </html>