com.g3.framework.orm.SimpleHibernateDao.java Source code

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/**
 * Copyright (c) 2005-2010 springside.org.cn
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * 
 * $Id: SimpleHibernateDao.java 1205 2010-09-09 15:12:17Z calvinxiu $
 */
package com.g3.framework.orm;

import com.g3.framework.utils.ReflectionUtils;
import org.hibernate.*;
import org.hibernate.criterion.CriteriaSpecification;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Restrictions;
import org.hibernate.metadata.ClassMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.Assert;

import java.io.Serializable;
import java.util.Collection;
import java.util.List;
import java.util.Map;

//import com.test.framework.constants.Constants;
//import com.test.framework.security.shiro.ShiroUtils;

/**
 * ?HibernateAPIDAO. ?Service, ?DAO?, ?. ?Spring2.5Petlinc?, ?HibernateTemplate,
 * HibernateAPI.
 * 
 * @param <T> DAO?
 * @param <PK> 
 * @author calvin
 */
@SuppressWarnings("unchecked")
public class SimpleHibernateDao<T, PK extends Serializable> {

    protected Logger logger = LoggerFactory.getLogger(getClass());

    protected SessionFactory sessionFactory;

    protected Class<T> entityClass;

    /**
     * Dao?. ??Class. eg. public class UserDao extends SimpleHibernateDao<User, Long>
     */
    public SimpleHibernateDao() {
        this.entityClass = ReflectionUtils.getSuperClassGenricType(getClass());
    }

    /**
     * ?Dao, ServiceSimpleHibernateDao. Class. eg. SimpleHibernateDao<User, Long> userDao
     * = new SimpleHibernateDao<User, Long>(sessionFactory, User.class);
     */
    public SimpleHibernateDao(final SessionFactory sessionFactory, final Class<T> entityClass) {
        this.sessionFactory = sessionFactory;
        this.entityClass = entityClass;
    }

    /**
     * ?sessionFactory.
     */
    public SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    /**
     * @AutowiredSessionFactory, SesionFactory??.
     */
    @Autowired
    public void setSessionFactory(final SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    /**
     * ??Session.
     */
    public Session getSession() {
        return sessionFactory.getCurrentSession();
    }

    /**
     * ?.
     */
    public void save(final T entity) {
        Assert.notNull(entity, "entity?");
        //        if(entity instanceof SyncEntity){
        //           SyncEntity syncEntity = (SyncEntity)entity;
        //           syncEntity.setIsSync(Constants.SYNC_WTB);
        //           syncEntity.setUpdateTime(new Date());
        //           syncEntity.setUpdateUser(ShiroUtils.getUsername());
        //           T newEntity = (T)syncEntity;
        //           getSession().saveOrUpdate(newEntity);
        //        }else{
        //        transaction.begin(); 
        getSession().saveOrUpdate(entity);
        //        getSession().flush();
        //        }
        logger.debug("save entity: {}", entity);
    }

    /**
     * .
     * 
     * @param entity session?idtransient.
     */
    public void delete(final T entity) {
        Assert.notNull(entity, "entity?");
        getSession().delete(entity);
        //        getSession().flush();
        logger.debug("delete entity: {}", entity);
    }

    /**
     * id.
     */
    public void delete(final PK id) {
        Assert.notNull(id, "id?");
        delete(get(id));
        logger.debug("delete entity {},id is {}", entityClass.getSimpleName(), id);
    }

    /**
     * id?.
     */
    public T get(final PK id) {
        Assert.notNull(id, "id?");
        System.out.println((T) getSession().load(entityClass, id).toString());
        return (T) getSession().load(entityClass, id);
    }

    /**
     * id?.
     */
    public List<T> get(final Collection<PK> ids) {
        return find(Restrictions.in(getIdName(), ids));
    }

    /**
     * ?.
     */
    public List<T> getAll() {
        return find();
    }

    /**
     * ?, ??.
     */
    public List<T> getAll(String orderByProperty, boolean isAsc) {
        Criteria c = createCriteria();
        if (isAsc) {
            c.addOrder(Order.asc(orderByProperty));
        } else {
            c.addOrder(Order.desc(orderByProperty));
        }
        return c.list();
    }

    /**
     * , ??.
     */
    public List<T> findBy(final String propertyName, final Object value) {
        Assert.hasText(propertyName, "propertyName?");
        Criterion criterion = Restrictions.eq(propertyName, value);
        return find(criterion);
    }

    /**
     * , ??.
     */
    public T findUniqueBy(final String propertyName, final Object value) {
        Assert.hasText(propertyName, "propertyName?");
        Criterion criterion = Restrictions.eq(propertyName, value);
        return (T) createCriteria(criterion).uniqueResult();
    }

    /**
     * HQL.
     * 
     * @param values ????,?.
     */
    public <X> List<X> find(final String hql, final Object... values) {
        return createQuery(hql, values).list();
    }

    /**
     * HQL.
     * 
     * @param values List,?.
     */
    public <X> List<X> find(final String hql, final List<String> values) {
        return createQuery(hql, values).list();
    }

    /**
     * HQL.
     * 
     * @param values ???,??.
     */
    public <X> List<X> find(final String hql, final Map<String, ?> values) {
        return createQuery(hql, values).list();
    }

    /**
     * HQL.
     * 
     * @param values ????,?.
     */
    public <X> X findUnique(final String hql, final Object... values) {
        return (X) createQuery(hql, values).uniqueResult();
    }

    /**
     * HQL.
     * 
     * @param values List,?.
     */
    public <X> X findUnique(final String hql, final List<String> values) {
        return (X) createQuery(hql, values).uniqueResult();
    }

    /**
     * HQL.
     * 
     * @param values ???,??.
     */
    public <X> X findUnique(final String hql, final Map<String, ?> values) {
        return (X) createQuery(hql, values).uniqueResult();
    }

    /**
     * HQL?/?.
     * 
     * @param values ????,?.
     * @return .
     */
    public int batchExecute(final String hql, final Object... values) {
        return createQuery(hql, values).executeUpdate();
    }

    /**
     * HQL?/?.
     * 
     * @param values ???,??.
     * @return .
     */
    public int batchExecute(final String hql, final Map<String, ?> values) {
        return createQuery(hql, values).executeUpdate();
    }

    /**
     * ?HQL?Query. find()???.
     * 
     * @param values ????,?.
     */
    public Query createQuery(final String queryString, final Object... values) {
        Assert.hasText(queryString, "queryString?");
        Query query = getSession().createQuery(queryString);
        if (values != null) {
            for (int i = 0; i < values.length; i++) {
                query.setParameter(i, values[i]);
            }
        }
        return query;
    }

    /**
     * ?HQL?Query. find()???.
     * 
     * @param values List?.
     */
    public Query createQuery(final String queryString, final List<String> values) {
        Assert.hasText(queryString, "queryString?");
        Query query = getSession().createQuery(queryString);
        if (values != null) {
            for (int i = 0; i < values.size(); i++) {
                query.setParameter(i, values.get(i));
            }
        }
        return query;
    }

    public SQLQuery createSQLQuery(final String sqlQueryString, final Object... values) {
        Assert.hasText(sqlQueryString, "queryString?");
        SQLQuery query = getSession().createSQLQuery(sqlQueryString);
        if (values != null) {
            for (int i = 0; i < values.length; i++) {
                query.setParameter(i, values[i]);
            }
        }
        return query;
    }

    public SQLQuery createSQLQuery(String sql, Map<String, Object> parameters) {
        sql = sql.toUpperCase();
        Assert.hasText(sql, "queryString?");
        SQLQuery query = getSession().createSQLQuery(sql);
        if (parameters != null) {
            for (String key : parameters.keySet()) {
                Object value = parameters.get(key);
                //System.out.println(key + "<::>" + value);
                if (value instanceof Collection) {
                    query.setParameterList(key.toUpperCase(), (Collection) value);
                } else if (value instanceof Integer) {
                    query.setInteger(key.toUpperCase(), ((Integer) value).intValue());
                } else {
                    query.setParameter(key.toUpperCase(), value);
                }
            }
        }
        return query;
    }

    /**
     * ?HQL?Query. find()???.
     * 
     * @param values ???,??.
     */
    public Query createQuery(final String queryString, final Map<String, ?> values) {
        Assert.hasText(queryString, "queryString?");
        Query query = getSession().createQuery(queryString);
        if (values != null) {
            query.setProperties(values);
        }
        return query;
    }

    /**
     * Criteria.
     * 
     * @param criterions ???Criterion.
     */
    public List<T> find(final Criterion... criterions) {
        return createCriteria(criterions).list();
    }

    /**
     * Criteria.
     * 
     * @param criterions ???Criterion.
     */
    public T findUnique(final Criterion... criterions) {
        return (T) createCriteria(criterions).uniqueResult();
    }

    /**
     * ?Criterion?Criteria. find()???.
     * 
     * @param criterions ???Criterion.
     */
    public Criteria createCriteria(final Criterion... criterions) {
        Criteria criteria = getSession().createCriteria(entityClass);
        for (Criterion c : criterions) {
            criteria.add(c);
        }
        return criteria;
    }

    /**
     * ?. load()Proxy, View???. entity, ??entity,????. ??,:
     * Hibernate.initialize(user.getRoles())?User??.
     * Hibernate.initialize(user.getDescription())?UserDescription.
     */
    public void initProxyObject(Object proxy) {
        Hibernate.initialize(proxy);
    }

    /**
     * Flush?Session.
     */
    public void flush() {
        getSession().flush();
    }

    /**
     * Querydistinct transformer. ?HQL??, ?distinct?.
     */
    public Query distinct(Query query) {
        query.setResultTransformer(CriteriaSpecification.DISTINCT_ROOT_ENTITY);
        return query;
    }

    /**
     * Criteriadistinct transformer. ?HQL??, ?distinct?.
     */
    public Criteria distinct(Criteria criteria) {
        criteria.setResultTransformer(CriteriaSpecification.DISTINCT_ROOT_ENTITY);
        return criteria;
    }

    /**
     * ???.
     */
    public String getIdName() {
        ClassMetadata meta = getSessionFactory().getClassMetadata(entityClass);
        return meta.getIdentifierPropertyName();
    }

    /**
     * ??. ,(value)?(orgValue)?.
     */
    public boolean isPropertyUnique(final String propertyName, final Object newValue, final Object oldValue) {
        if (newValue == null || newValue.equals(oldValue)) {
            return true;
        }
        Object object = findUniqueBy(propertyName, newValue);
        return (object == null);
    }
}