net.groupbuy.dao.impl.ParameterDaoImpl.java Source code

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Here is the source code for net.groupbuy.dao.impl.ParameterDaoImpl.java

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/*
 * Copyright 2005-2013 shopxx.net. All rights reserved.
 * Support: http://www.shopxx.net
 * License: http://www.shopxx.net/license
 */
package net.groupbuy.dao.impl;

import java.util.List;
import java.util.Set;

import javax.persistence.FlushModeType;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;

import net.groupbuy.dao.ParameterDao;
import net.groupbuy.entity.Parameter;
import net.groupbuy.entity.ParameterGroup;

import org.springframework.stereotype.Repository;

/**
 * Dao - ?
 * 
 * @author SHOP++ Team
 * @version 3.0
 */
@Repository("parameterDaoImpl")
public class ParameterDaoImpl extends BaseDaoImpl<Parameter, Long> implements ParameterDao {

    public List<Parameter> findList(ParameterGroup parameterGroup, Set<Parameter> excludes) {
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaQuery<Parameter> criteriaQuery = criteriaBuilder.createQuery(Parameter.class);
        Root<Parameter> root = criteriaQuery.from(Parameter.class);
        criteriaQuery.select(root);
        Predicate restrictions = criteriaBuilder.conjunction();
        if (parameterGroup != null) {
            restrictions = criteriaBuilder.and(restrictions,
                    criteriaBuilder.equal(root.get("parameterGroup"), parameterGroup));
        }
        if (excludes != null && !excludes.isEmpty()) {
            restrictions = criteriaBuilder.and(restrictions, criteriaBuilder.not(root.in(excludes)));
        }
        criteriaQuery.where(restrictions);
        return entityManager.createQuery(criteriaQuery).setFlushMode(FlushModeType.COMMIT).getResultList();
    }

}