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gdfreitasdevgdfreitasdev
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implementacao do resource de Book e testes
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‎library-resource/src/main/java/com/library/app/book/resource/BookFilterExtractorFromUrl.java‎

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package com.library.app.book.resource;
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import javax.ws.rs.core.UriInfo;
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import com.library.app.book.model.filter.BookFilter;
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import com.library.app.common.resource.AbstractFilterExtractorFromUrl;
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public class BookFilterExtractorFromUrl extends AbstractFilterExtractorFromUrl {
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public BookFilterExtractorFromUrl(final UriInfo uriInfo) {
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super(uriInfo);
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}
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public BookFilter getFilter() {
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final BookFilter bookFilter = new BookFilter();
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bookFilter.setPaginationData(extractPaginationData());
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bookFilter.setTitle(getUriInfo().getQueryParameters().getFirst("title"));
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final String categoryIdStr = getUriInfo().getQueryParameters().getFirst("categoryId");
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if (categoryIdStr != null) {
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bookFilter.setCategoryId(Long.valueOf(categoryIdStr));
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}
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return bookFilter;
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}
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@Override
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protected String getDefaultSortField() {
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return "title";
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}
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}

‎library-resource/src/main/java/com/library/app/book/resource/BookJsonConverter.java‎

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package com.library.app.book.resource;
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import javax.enterprise.context.ApplicationScoped;
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import javax.inject.Inject;
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import com.google.gson.JsonArray;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.library.app.author.model.Author;
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import com.library.app.author.resource.AuthorJsonConverter;
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import com.library.app.book.model.Book;
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import com.library.app.category.model.Category;
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import com.library.app.category.resource.CategoryJsonConverter;
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import com.library.app.common.json.EntityJsonConverter;
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import com.library.app.common.json.JsonReader;
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@ApplicationScoped
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public class BookJsonConverter implements EntityJsonConverter<Book> {
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@Inject
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CategoryJsonConverter categoryJsonConverter;
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@Inject
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AuthorJsonConverter authorJsonConverter;
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@Override
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public Book convertFrom(final String json) {
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final JsonObject jsonObject = JsonReader.readAsJsonObject(json);
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final Book book = new Book();
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book.setTitle(JsonReader.getStringOrNull(jsonObject, "title"));
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book.setDescription(JsonReader.getStringOrNull(jsonObject, "description"));
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final Category category = new Category();
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category.setId(JsonReader.getLongOrNull(jsonObject, "categoryId"));
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book.setCategory(category);
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final JsonArray authorsIdsJsonArray = jsonObject.getAsJsonArray("authorsIds");
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if (authorsIdsJsonArray != null) {
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for (final JsonElement authorIdJsonElement : authorsIdsJsonArray) {
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final Author author = new Author();
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author.setId(authorIdJsonElement.getAsLong());
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book.addAuthor(author);
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}
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}
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book.setPrice(JsonReader.getDoubeOrNull(jsonObject, "price"));
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return book;
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}
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@Override
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public JsonElement convertToJsonElement(final Book book) {
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final JsonObject jsonObject = new JsonObject();
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jsonObject.addProperty("id", book.getId());
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jsonObject.addProperty("title", book.getTitle());
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jsonObject.addProperty("description", book.getDescription());
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jsonObject.add("category", categoryJsonConverter.convertToJsonElement(book.getCategory()));
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jsonObject.add("authors", authorJsonConverter.convertToJsonElement(book.getAuthors()));
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jsonObject.addProperty("price", book.getPrice());
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return jsonObject;
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}
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}

‎library-resource/src/main/java/com/library/app/book/resource/BookResource.java‎

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package com.library.app.book.resource;
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import static com.library.app.common.model.StandardsOperationResults.*;
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import javax.annotation.security.PermitAll;
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import javax.annotation.security.RolesAllowed;
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import javax.inject.Inject;
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import javax.ws.rs.Consumes;
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import javax.ws.rs.GET;
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import javax.ws.rs.POST;
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import javax.ws.rs.PUT;
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import javax.ws.rs.Path;
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import javax.ws.rs.PathParam;
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import javax.ws.rs.Produces;
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import javax.ws.rs.core.Context;
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import javax.ws.rs.core.MediaType;
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import javax.ws.rs.core.Response;
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import javax.ws.rs.core.Response.ResponseBuilder;
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import javax.ws.rs.core.UriInfo;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.google.gson.JsonElement;
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import com.library.app.author.exception.AuthorNotFoundException;
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import com.library.app.book.exception.BookNotFoundException;
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import com.library.app.book.model.Book;
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import com.library.app.book.model.filter.BookFilter;
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import com.library.app.book.services.BookServices;
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import com.library.app.category.exception.CategoryNotFoundException;
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import com.library.app.common.exception.FieldNotValidException;
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import com.library.app.common.json.JsonUtils;
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import com.library.app.common.json.JsonWriter;
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import com.library.app.common.json.OperationResultJsonWriter;
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import com.library.app.common.model.HttpCode;
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import com.library.app.common.model.OperationResult;
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import com.library.app.common.model.PaginatedData;
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import com.library.app.common.model.ResourceMessage;
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@Path("/books")
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@Produces(MediaType.APPLICATION_JSON)
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@Consumes(MediaType.APPLICATION_JSON)
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@RolesAllowed({ "EMPLOYEE" })
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public class BookResource {
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private Logger logger = LoggerFactory.getLogger(getClass());
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private static final ResourceMessage RESOURCE_MESSAGE = new ResourceMessage("book");
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@Inject
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BookServices bookServices;
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@Inject
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BookJsonConverter bookJsonConverter;
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@Context
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UriInfo uriInfo;
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@POST
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public Response add(final String body) {
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logger.debug("Adding a new book with body {}", body);
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Book book = bookJsonConverter.convertFrom(body);
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HttpCode httpCode = HttpCode.CREATED;
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OperationResult result;
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try {
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book = bookServices.add(book);
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result = OperationResult.success(JsonUtils.getJsonElementWithId(book.getId()));
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} catch (final FieldNotValidException e) {
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httpCode = HttpCode.VALIDATION_ERROR;
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logger.error("One of the fields of the book is not valid", e);
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result = getOperationResultInvalidField(RESOURCE_MESSAGE, e);
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} catch (final CategoryNotFoundException e) {
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httpCode = HttpCode.VALIDATION_ERROR;
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logger.error("Category not found for book", e);
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result = getOperationResultDependencyNotFound(RESOURCE_MESSAGE, "category");
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} catch (final AuthorNotFoundException e) {
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httpCode = HttpCode.VALIDATION_ERROR;
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logger.error("Author not found for book", e);
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result = getOperationResultDependencyNotFound(RESOURCE_MESSAGE, "author");
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}
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logger.debug("Returning the operation result after adding book: {}", result);
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return Response.status(httpCode.getCode()).entity(OperationResultJsonWriter.toJson(result)).build();
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}
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@PUT
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@Path("/{id}")
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public Response update(@PathParam("id") final Long id, final String body) {
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logger.debug("Updating the book {} with body {}", id, body);
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final Book book = bookJsonConverter.convertFrom(body);
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book.setId(id);
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HttpCode httpCode = HttpCode.OK;
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OperationResult result;
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try {
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bookServices.update(book);
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result = OperationResult.success();
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} catch (final FieldNotValidException e) {
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httpCode = HttpCode.VALIDATION_ERROR;
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logger.error("One of the fields of the book is not valid", e);
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result = getOperationResultInvalidField(RESOURCE_MESSAGE, e);
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} catch (final CategoryNotFoundException e) {
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httpCode = HttpCode.VALIDATION_ERROR;
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logger.error("Category not found for book", e);
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result = getOperationResultDependencyNotFound(RESOURCE_MESSAGE, "category");
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} catch (final AuthorNotFoundException e) {
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httpCode = HttpCode.VALIDATION_ERROR;
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logger.error("Author not found for book", e);
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result = getOperationResultDependencyNotFound(RESOURCE_MESSAGE, "author");
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} catch (final BookNotFoundException e) {
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httpCode = HttpCode.NOT_FOUND;
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logger.error("No book found for the given id", e);
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result = getOperationResultNotFound(RESOURCE_MESSAGE);
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}
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logger.debug("Returning the operation result after updating book: {}", result);
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return Response.status(httpCode.getCode()).entity(OperationResultJsonWriter.toJson(result)).build();
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}
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@GET
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@Path("/{id}")
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public Response findById(@PathParam("id") final Long id) {
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logger.debug("Find book: {}", id);
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ResponseBuilder responseBuilder;
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try {
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final Book book = bookServices.findById(id);
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final OperationResult result = OperationResult.success(bookJsonConverter.convertToJsonElement(book));
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responseBuilder = Response.status(HttpCode.OK.getCode()).entity(OperationResultJsonWriter.toJson(result));
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logger.debug("Book found: {}", book);
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} catch (final BookNotFoundException e) {
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logger.error("No book found for id", id);
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responseBuilder = Response.status(HttpCode.NOT_FOUND.getCode());
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}
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return responseBuilder.build();
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}
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@GET
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@PermitAll
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public Response findByFilter() {
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final BookFilter bookFilter = new BookFilterExtractorFromUrl(uriInfo).getFilter();
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logger.debug("Finding books using filter: {}", bookFilter);
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final PaginatedData<Book> books = bookServices.findByFilter(bookFilter);
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logger.debug("Found {} books", books.getNumberOfRows());
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final JsonElement jsonWithPagingAndEntries = JsonUtils.getJsonElementWithPagingAndEntries(books,
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bookJsonConverter);
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return Response.status(HttpCode.OK.getCode()).entity(JsonWriter.writeToString(jsonWithPagingAndEntries))
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.build();
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}
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}

‎library-resource/src/test/java/com/library/app/book/resource/BookFilterExtractorFromUrlTest.java‎

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package com.library.app.book.resource;
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import static com.library.app.commontests.utils.FilterExtractorTestUtils.*;
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import static org.hamcrest.CoreMatchers.*;
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import static org.junit.Assert.*;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import javax.ws.rs.core.UriInfo;
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import org.junit.Before;
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import org.junit.Test;
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import org.mockito.Mock;
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import org.mockito.MockitoAnnotations;
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import com.library.app.book.model.filter.BookFilter;
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import com.library.app.common.model.filter.PaginationData;
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import com.library.app.common.model.filter.PaginationData.OrderMode;
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public class BookFilterExtractorFromUrlTest {
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@Mock
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private UriInfo uriInfo;
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@Before
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public void initTestCase() {
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MockitoAnnotations.initMocks(this);
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}
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@Test
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public void onlyDefaultValues() {
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setUpUriInfo(null, null, null, null, null);
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final BookFilterExtractorFromUrl extractor = new BookFilterExtractorFromUrl(uriInfo);
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final BookFilter bookFilter = extractor.getFilter();
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assertActualPaginationDataWithExpected(bookFilter.getPaginationData(), new PaginationData(0, 10, "title",
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OrderMode.ASCENDING));
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assertFieldsOnFilter(bookFilter, null, null);
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}
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@Test
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public void withPaginationAndTitleAndCategoryIdAndSortAscending() {
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setUpUriInfo("2", "5", "Design", "1", "id");
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final BookFilterExtractorFromUrl extractor = new BookFilterExtractorFromUrl(uriInfo);
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final BookFilter bookFilter = extractor.getFilter();
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assertActualPaginationDataWithExpected(bookFilter.getPaginationData(), new PaginationData(10, 5, "id",
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OrderMode.ASCENDING));
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assertFieldsOnFilter(bookFilter, "Design", 1L);
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}
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@Test
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public void withPaginationAndTitleAndSortAscendingWithPrefix() {
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setUpUriInfo("2", "5", "Design", null, "+id");
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final BookFilterExtractorFromUrl extractor = new BookFilterExtractorFromUrl(uriInfo);
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final BookFilter bookFilter = extractor.getFilter();
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assertActualPaginationDataWithExpected(bookFilter.getPaginationData(), new PaginationData(10, 5, "id",
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OrderMode.ASCENDING));
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assertFieldsOnFilter(bookFilter, "Design", null);
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}
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@Test
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public void withPaginationAndTitleAndCategoryIdAndSortDescending() {
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setUpUriInfo("2", "5", "Design", "10", "-id");
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final BookFilterExtractorFromUrl extractor = new BookFilterExtractorFromUrl(uriInfo);
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final BookFilter bookFilter = extractor.getFilter();
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assertActualPaginationDataWithExpected(bookFilter.getPaginationData(), new PaginationData(10, 5, "id",
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OrderMode.DESCENDING));
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assertFieldsOnFilter(bookFilter, "Design", 10L);
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}
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private void setUpUriInfo(final String page, final String perPage, final String title, final String categoryId,
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final String sort) {
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final Map<String, String> parameters = new LinkedHashMap<>();
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parameters.put("page", page);
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parameters.put("per_page", perPage);
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parameters.put("title", title);
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parameters.put("categoryId", categoryId);
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parameters.put("sort", sort);
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setUpUriInfoWithMap(uriInfo, parameters);
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}
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private void assertFieldsOnFilter(final BookFilter bookFilter, final String title, final Long categoryId) {
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assertThat(bookFilter.getTitle(), is(equalTo(title)));
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assertThat(bookFilter.getCategoryId(), is(equalTo(categoryId)));
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}
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}

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