/
BookJooqQueries.java
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/
BookJooqQueries.java
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package com.ns.vertx.pg;
import static com.ns.vertx.pg.jooq.tables.Book.BOOK;
import static com.ns.vertx.pg.jooq.tables.CategoryBook.CATEGORY_BOOK;
import static com.ns.vertx.pg.jooq.tables.AuthorBook.AUTHOR_BOOK;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.ns.vertx.pg.jooq.tables.daos.AuthorBookDao;
import com.ns.vertx.pg.jooq.tables.daos.BookDao;
import com.ns.vertx.pg.jooq.tables.daos.CategoryBookDao;
import com.ns.vertx.pg.jooq.tables.pojos.AuthorBook;
import com.ns.vertx.pg.jooq.tables.pojos.Book;
import com.ns.vertx.pg.jooq.tables.pojos.CategoryBook;
import io.github.jklingsporn.vertx.jooq.classic.reactivepg.ReactiveClassicGenericQueryExecutor;
import io.github.jklingsporn.vertx.jooq.shared.internal.QueryResult;
import io.vertx.core.Future;
import io.vertx.core.Promise;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;
public class BookJooqQueries {
private static final Logger LOGGER = LoggerFactory.getLogger(BookJooqQueries.class);
/* NOTE: using QueryResult as generic and driver agnostic response is a very good thing.
* from https://github.com/jklingsporn/vertx-jooq/issues/120#issuecomment-533879183 */
private static JsonObject fillBook(QueryResult booksQR) {
return new JsonObject()
.put("book_id", booksQR.get("b_id", Long.class))
.put("title", booksQR.get("title", String.class))
.put("price", booksQR.get("price", Double.class))
.put("amount", booksQR.get("amount", Integer.class))
.put("is_deleted", booksQR.get("is_deleted", Boolean.class))
.put("authors", booksQR.get("authors", JsonArray.class))
.put("categories", booksQR.get("categories", JsonArray.class));
}
private static JsonObject extractBooksFromQR(QueryResult queryResult){
JsonArray booksJA = new JsonArray();
for(QueryResult qr: queryResult.asList()) {
JsonObject book = fillBook(qr);
booksJA.add(book);
}
return new JsonObject().put("books", booksJA);
}
static Future<JsonObject> getBookByIdJooq(ReactiveClassicGenericQueryExecutor queryExecutor, long book_id) {
Promise<JsonObject> finalRes = Promise.promise();
/* NOTE: might want to check into https://www.jooq.org/doc/3.11/manual/sql-building/bind-values/sql-injection/
* ...to use dsl.fetch(SQL_QUERY, bindingParam) instead of dls.resultQuery */
Future<QueryResult> bookFuture = queryExecutor.query(dsl -> dsl
.resultQuery(DBQueries.GET_BOOK_BY_BOOK_ID, Long.valueOf(book_id)));
bookFuture.setHandler(handler -> {
if (handler.succeeded()) {
LOGGER.info("Success, query has passed for book ID = " + book_id);
QueryResult booksQR = handler.result();
JsonObject bookJsonObject = fillBook(booksQR);
finalRes.complete(bookJsonObject);
} else {
LOGGER.error("Error, something failed in retrivening query by book_id = " + book_id +
" ! Cause: " + handler.cause());
finalRes.fail(handler.cause());
}
});
return finalRes.future();
}
// ***************************************************************************************************************
static Future<JsonObject> getAllBooksJooq(ReactiveClassicGenericQueryExecutor queryExecutor) {
Promise<JsonObject> finalRes = Promise.promise();
Future<QueryResult> bookFuture = queryExecutor.query(dsl -> dsl.resultQuery(DBQueries.GET_ALL_BOOKS));
bookFuture.setHandler(handler -> {
if (handler.succeeded()) {
QueryResult booksQR = handler.result();
JsonObject booksJsonObject = extractBooksFromQR(booksQR);
LOGGER.info("bookJsonObject.encodePrettily(): " + booksJsonObject.encodePrettily());
finalRes.complete(booksJsonObject);
} else {
LOGGER.error("Error, something failed in retrivening ALL books! Cause: " + handler.cause().getMessage());
finalRes.fail(handler.cause());
}
});
return finalRes.future();
}
// ***************************************************************************************************************
static Future<JsonObject> createBookJooq(ReactiveClassicGenericQueryExecutor queryExecutor,
BookDao bookDAO, AuthorBookDao authorBookDAO, CategoryBookDao categoryBookDAO, JsonObject bookJO) {
Promise<JsonObject> promise = Promise.promise();
Book bookPojo = new Book(bookJO);
Future<Long> futureBookDao = bookDAO.insertReturningPrimary(bookPojo);
futureBookDao.setHandler(handler -> {
if (handler.succeeded()) {
Long bookId = handler.result();
Set<Long> authorUpdatedIds = bookJO.getJsonArray("author_ids").stream()
.mapToLong(a -> Long.valueOf(String.valueOf(a))).boxed().collect(Collectors.toSet());
Set<Long> categoryUpdatedIds = bookJO.getJsonArray("category_ids").stream()
.mapToLong(a -> Long.valueOf(String.valueOf(a))).boxed().collect(Collectors.toSet());
Set<AuthorBook> bookAuthors = new HashSet<>();
Set<CategoryBook> bookCategories = new HashSet<>();
for (Long authorId : authorUpdatedIds) {
AuthorBook ab = new AuthorBook(authorId, bookId);
bookAuthors.add(ab);
}
for (Long catId : categoryUpdatedIds) {
CategoryBook cb = new CategoryBook(catId, bookId);
bookCategories.add(cb);
}
authorBookDAO.insert(bookAuthors);
categoryBookDAO.insert(bookCategories);
bookJO.put("book_id", bookId);
promise.complete(bookJO);
} else {
LOGGER.error("Error, insertion of book failed! Cause: " + handler.cause());
promise.fail(handler.cause());
}
});
return promise.future();
}
// ***************************************************************************************************************
static Future<JsonObject> updateBookJooq(ReactiveClassicGenericQueryExecutor queryExecutor, JsonObject bookJO,
BookDao bookDAO, AuthorBookDao authorBookDAO, CategoryBookDao categoryBookDAO, long bookId) {
Promise<JsonObject> promise = Promise.promise();
Set<Long> authorUpdatedIds = bookJO.getJsonArray("author_ids").stream()
.mapToLong(a -> Long.valueOf(String.valueOf(a))).boxed().collect(Collectors.toSet());
Set<Long> categoryUpdatedIds = bookJO.getJsonArray("category_ids").stream()
.mapToLong(a -> Long.valueOf(String.valueOf(a))).boxed().collect(Collectors.toSet());
LOGGER.info("categoryUpdatedIds:");
categoryUpdatedIds.stream().forEach(System.out::println);
Future<Integer> iterateCBFuture = iterateCategoryBook(queryExecutor, categoryBookDAO, categoryUpdatedIds, bookId);
Future<Integer> iterateABFuture = iterateAuthorBook(queryExecutor, authorBookDAO, authorUpdatedIds, bookId);
Future<Integer> updateBookFuture = bookDAO.update(new Book(bookJO)); // UPDATES Book
iterateABFuture.compose(res -> iterateCBFuture).compose(res -> updateBookFuture).setHandler(ar -> {
if (ar.succeeded()) {
LOGGER.info("Success, all went well!");
promise.complete(bookJO);
} else {
LOGGER.error("Error, something FAILED in composition of 3 Futures!!! Cause: " + ar.cause() );
promise.fail(ar.cause());
}
});
return promise.future();
}
// ***************************************************************************************************************
private static Future<Integer> iterateCategoryBook(ReactiveClassicGenericQueryExecutor queryExecutor,
CategoryBookDao categoryBookDAO, Set<Long> categoryUpdatedIds, long bookId) {
Promise<Integer> promise = Promise.promise();
Future<List<CategoryBook>> existingBCFuture = categoryBookDAO.findManyByBookId(Arrays.asList(bookId));
existingBCFuture.setHandler(ar -> { // for DEBUGGING
if (ar.succeeded()) {
List<CategoryBook> existingBC = ar.result();
existingBC.stream().forEach(System.out::println);
Set<Long> existingBCategoriesIds = existingBC.stream()
.map(cb -> cb.getCategoryId())
.collect(Collectors.toSet());
Set<Long> deleteCategoryIdsSet = existingBCategoriesIds.stream()
.filter(catId -> !categoryUpdatedIds.contains(catId))
.collect(Collectors.toSet());
LOGGER.info("Going to DELETE next category ids:");
deleteCategoryIdsSet.stream().forEach(System.out::println);
Future<Integer> deleteCategoryBookFuture = queryExecutor.execute(dsl -> dsl
.deleteFrom(CATEGORY_BOOK)
.where(CATEGORY_BOOK.BOOK_ID.eq(Long.valueOf(bookId)))
.and(CATEGORY_BOOK.CATEGORY_ID.in(deleteCategoryIdsSet))
);
Set<Long> toInsertCategoryIdsSet = categoryUpdatedIds.stream()
.filter(catId -> !existingBCategoriesIds.contains(catId))
.collect(Collectors.toSet());
LOGGER.info("Category IDs to insert:");
toInsertCategoryIdsSet.stream().forEach(System.out::println);
Set<CategoryBook> bookCategories = new HashSet<>();
for (Long catId : toInsertCategoryIdsSet) {
CategoryBook cb = new CategoryBook(catId, bookId);
bookCategories.add(cb);
}
Future<Integer> insertBCFuture = categoryBookDAO.insert(bookCategories);
deleteCategoryBookFuture.compose(res -> insertBCFuture).setHandler(finalRes -> {
if(finalRes.succeeded()) {
LOGGER.info("Success, ALL done!");
promise.complete(finalRes.result());
} else {
LOGGER.error("Error, something failed in deleteCategoryBookFuture.compose(..)! Cause: " + finalRes.cause());
promise.fail(finalRes.cause());
}
});
promise.complete(1);
} else {
LOGGER.error("categoryBookDAO.findManyByBookId(bookIds) FAILED! Cause: " + ar.cause());
promise.fail(ar.cause());
}
});
return promise.future();
}
// ***************************************************************************************************************
private static Future<Integer> iterateAuthorBook(ReactiveClassicGenericQueryExecutor queryExecutor,
AuthorBookDao authorBookDAO, Set<Long> authorUpdatedIds, long bookId) {
Promise<Integer> promise = Promise.promise();
Future<List<AuthorBook>> existingACFuture = authorBookDAO.findManyByBookId(Arrays.asList(bookId));
existingACFuture.setHandler(ar -> {
if (ar.succeeded()) {
List<AuthorBook> existingAC = ar.result();
existingAC.stream().forEach(System.out::println);
Set<Long> existingBAuhtorIds = existingAC.stream()
.map(ab -> ab.getAuthorId())
.collect(Collectors.toSet());
Set<Long> deleteAuthorIdsSet = existingBAuhtorIds.stream()
.filter(autId -> !authorUpdatedIds.contains(autId))
.collect(Collectors.toSet());
LOGGER.info("Author IDs to DELETE:");
deleteAuthorIdsSet.stream().forEach(System.out::println);
Future<Integer> deleteAuthorBookFuture = queryExecutor.execute(dsl -> dsl
.deleteFrom(AUTHOR_BOOK)
.where(AUTHOR_BOOK.BOOK_ID.eq(Long.valueOf(bookId)))
.and(AUTHOR_BOOK.AUTHOR_ID.in(deleteAuthorIdsSet))
);
Set<Long> toInsertAuthorIdsSet = authorUpdatedIds.stream()
.filter(catId -> !existingBAuhtorIds.contains(catId))
.collect(Collectors.toSet());
LOGGER.info("Author IDs to insert:");
toInsertAuthorIdsSet.stream().forEach(System.out::println);
Set<AuthorBook> bookAuthors = new HashSet<>();
for (Long autId : toInsertAuthorIdsSet) {
AuthorBook ab = new AuthorBook(autId, bookId);
bookAuthors.add(ab);
}
Future<Integer> insertBAFuture = authorBookDAO.insert(bookAuthors);
// FIXME: https://stackoverflow.com/a/52506233/6805866
deleteAuthorBookFuture.compose(res -> insertBAFuture).setHandler(finalRes -> {
if(finalRes.succeeded()) {
LOGGER.info("Success, ALL done!");
promise.complete();
} else {
LOGGER.error("Error, something failed in deleteAuthorBookFuture.compose(..)! Cause: " + finalRes.cause());
promise.fail(finalRes.cause());
}
});
promise.complete();
} else {
LOGGER.error("authorBookDAO.findManyByBookId(bookIds) FAILED! Cause: " + ar.cause());
promise.fail(ar.cause());
}
});
return promise.future();
}
// ***************************************************************************************************************
static Future<Void> deleteBookJooq(ReactiveClassicGenericQueryExecutor queryExecutor, long id) {
Promise<Void> promise = Promise.promise();
Future<Integer> deleteBookFuture = queryExecutor.execute(dsl -> dsl
.delete(BOOK)
.where(BOOK.BOOK_ID.eq(Long.valueOf(id)))
);
deleteBookFuture.setHandler(ar -> {
if (ar.succeeded()) {
LOGGER.info("Success, deletion successful for Book id = " + id);
promise.handle(Future.succeededFuture());
} else {
LOGGER.error("Error, deletion failed for Book id = " + id);
promise.handle(Future.failedFuture(new NoSuchElementException("No book with id = " + id)));
}
});
return promise.future();
}
}