com.app.mongoDao.MongoBookDao.java Source code

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Here is the source code for com.app.mongoDao.MongoBookDao.java

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package com.app.mongoDao;

import com.app.domain.Book;
import com.app.domain.BookDao;
import com.app.mongoconfig.DatabaseConfig;
import com.mongodb.BasicDBObject;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import java.util.ArrayList;
import java.util.List;
import org.springframework.stereotype.Service;

/**
 *
 * @author rohat
 */
@Service
public class MongoBookDao implements BookDao {

    @Override
    public List<Book> listBook() {
        ArrayList<Book> booklist = new ArrayList<>();
        try {
            DBCollection data = DatabaseConfig.configure();
            BasicDBObject orderBy = new BasicDBObject("id", 1);
            DBCursor docs = data.find().sort(orderBy);

            while (docs.hasNext()) {
                DBObject doc = docs.next();
                Book librarybook = new Book(doc.get("bookname").toString(), doc.get("author").toString());
                booklist.add(librarybook);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return booklist;
    }

    @Override
    public String insertBook(Book book) {
        String status = "";
        try {
            DBCollection data = DatabaseConfig.configure();
            BasicDBObject insertbook = new BasicDBObject();
            insertbook.put("bookname", book.getBookname());
            insertbook.put("author", book.getAuthor());
            data.insert(insertbook);
            status = "Book created successfully";
        } catch (Exception e) {
            status = "Book  not created successfully";
            e.printStackTrace();

        }
        return status;
    }

    @Override
    public String updateBook(Book book, String updatedbook) {
        String status = "";
        try {
            DBCollection data = DatabaseConfig.configure();
            BasicDBObject updateQuery = new BasicDBObject("bookname", updatedbook);
            BasicDBObject updated = new BasicDBObject();
            updated.put("bookname", book.getBookname());
            updated.put("author", book.getAuthor());
            data.update(updateQuery, new BasicDBObject("$set", updated));
            status = "Book updated successfully";
        } catch (Exception e) {
            status = "Book not updated successfully";
            e.printStackTrace();
        }

        return status;

    }

    @Override
    public String deleteBook(String book) {
        String status = "";
        try {
            DBCollection data = DatabaseConfig.configure();
            BasicDBObject query = new BasicDBObject();
            query.append("bookname", book);
            data.remove(query);
            status = "Book deleted successfully";
        } catch (Exception e) {
            status = "Book not deleted successfully";
            e.printStackTrace();
        }

        return status;
    }
}