cz.fi.muni.pa165.dao.PrintedBookDAOImpl.java Source code

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Here is the source code for cz.fi.muni.pa165.dao.PrintedBookDAOImpl.java

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package cz.fi.muni.pa165.dao;

import cz.fi.muni.pa165.entity.Book;
import cz.fi.muni.pa165.entity.Loan;
import cz.fi.muni.pa165.entity.PrintedBook;
import org.springframework.stereotype.Component;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import javax.persistence.TypedQuery;
import java.util.List;

/**
 * @author Boris Valentovic - xvalent2
 */
@Component
public class PrintedBookDAOImpl implements PrintedBookDAO, GenericDAO<PrintedBook> {

    /**
     * Persistence context for this class
     */
    @PersistenceContext(unitName = "myUnit")
    private EntityManager em;

    @Override
    public List<PrintedBook> findPrintedBooks(Book book) {
        if (book == null) {
            throw new IllegalArgumentException("Book null");
        }

        try {
            final Query query = em.createQuery("SELECT m FROM PrintedBook as m WHERE m.book.idBook = :i");
            query.setParameter("i", book.getIdBook());
            return query.getResultList();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public List<PrintedBook> findPrintedBooksByState(Book book, Boolean state) {
        if (book == null) {
            throw new IllegalArgumentException("Book null");
        }
        if (state == null) {
            throw new IllegalArgumentException("State null");
        }

        try {
            final Query query = em
                    .createQuery("SELECT m FROM PrintedBook as m WHERE m.book.idBook = :i AND m.state = :s");
            query.setParameter("i", book.getIdBook());
            query.setParameter("s", state);
            return query.getResultList();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public List<PrintedBook> findPrintedBooksByLoan(Book book, Loan loan) {
        if (book == null) {
            throw new IllegalArgumentException("Book null");
        }
        if (loan == null) {
            throw new IllegalArgumentException("Loan null");
        }

        try {
            final Query query = em
                    .createQuery("SELECT m FROM PrintedBook as m WHERE m.book.idBook = :i AND m.loan.idLoan = :l");
            query.setParameter("i", book.getIdBook());
            query.setParameter("l", loan.getIdLoan());
            return query.getResultList();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    public void setManager(EntityManager entityManager) {
        this.em = entityManager;
    }

    @Override
    public void insert(PrintedBook t) {
        if (t == null) {
            throw new IllegalArgumentException("Printed Book null");
        }

        try {
            em.persist(t);
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public void update(PrintedBook printedBook) {
        if (printedBook == null) {
            throw new IllegalArgumentException("printed book in update is null");
        }

        try {
            PrintedBook pb = find(printedBook);

            if (pb == null) {
                throw new IllegalArgumentException("printed book after find is null");
            }

            pb.setBook(printedBook.getBook());
            pb.setCondition(printedBook.getCondition());
            pb.setState(printedBook.getState());
            em.persist(pb);
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public void delete(PrintedBook t) {
        if (t == null) {
            throw new IllegalArgumentException("Printed Book null");
        }

        try {
            PrintedBook a = em.merge(t);
            em.remove(a);
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public PrintedBook find(PrintedBook t) {
        if (t == null) {
            throw new IllegalArgumentException("Printed Book null");
        }

        try {
            final Query query = em.createQuery("SELECT m FROM PrintedBook as m WHERE m.idPrintedBook = :i");
            query.setParameter("i", t.getIdPrintedBook());
            return (PrintedBook) query.getSingleResult();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public PrintedBook findPrintedBookById(long id) {
        try {
            final Query query = em.createQuery("SELECT m FROM PrintedBook as m WHERE m.idPrintedBook = :i");
            query.setParameter("i", id);
            return (PrintedBook) query.getSingleResult();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public List<PrintedBook> findAllBorrowedPrintedBooks() {
        try {
            final Query query = em.createQuery("SELECT m FROM PrintedBook as m WHERE m.state = :i");
            query.setParameter("i", Boolean.TRUE);
            return query.getResultList();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

    @Override
    public List<PrintedBook> findAllPrintedBooksByLoan(Loan loan) {
        if (loan == null) {
            throw new IllegalArgumentException("Book null");
        }

        try {
            final TypedQuery<PrintedBook> query = em
                    .createQuery("SELECT m FROM PrintedBook as m WHERE m.loan.idLoan = :lid", PrintedBook.class);
            query.setParameter("lid", loan.getIdLoan());
            return query.getResultList();
        } catch (RuntimeException E) {
            throw new DAException(E.getMessage());
        }
    }

}