be.wolkmaan.klimtoren.persistence.HibernateRepository.java Source code

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Here is the source code for be.wolkmaan.klimtoren.persistence.HibernateRepository.java

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package be.wolkmaan.klimtoren.persistence;

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;

/**
 *
 * @author karl
 * @param <T>
 */
public abstract class HibernateRepository<T> implements Repository<T> {

    @Autowired
    private SessionFactory sessionFactory;

    protected Session getSession() {
        return sessionFactory.getCurrentSession();
    }

    @Override
    public void store(Object entity) {
        getSession().saveOrUpdate(entity);
    }

    @Override
    public T get(Serializable id) {
        return (T) getSession().get(genericClass(), id);
    }

    @Override
    public List<T> list() {
        return (List<T>) getSession().createCriteria(genericClass()).list();
    }

    @Override
    public T remove(Serializable id) {
        T entity = get(id);
        if (entity != null)
            getSession().delete(entity);
        return entity;
    }

    private Class<T> genericClass() {
        ParameterizedType parameterizedType = (ParameterizedType) getClass().getGenericSuperclass();

        @SuppressWarnings("unchecked")
        Class<T> ret = (Class<T>) parameterizedType.getActualTypeArguments()[0];

        return ret;
    }

}