/** PUT /books -> Updates an existing book. */
@RequestMapping(
value = "/books",
method = RequestMethod.PUT,
produces = MediaType.APPLICATION_JSON_VALUE)
@Timed
public ResponseEntity<Book> updateBook(@RequestBody Book book) throws URISyntaxException {
log.debug("REST request to update Book : {}", book);
if (book.getId() == null) {
return createBook(book);
}
Book result = bookRepository.save(book);
return ResponseEntity.ok()
.headers(HeaderUtil.createEntityUpdateAlert("book", book.getId().toString()))
.body(result);
}