com.brienwheeler.lib.db.dao.PersistentAttributeDaoBase.java Source code

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Here is the source code for com.brienwheeler.lib.db.dao.PersistentAttributeDaoBase.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Brien L. Wheeler (brienwheeler@yahoo.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.brienwheeler.lib.db.dao;

import java.util.List;

import javax.persistence.Query;

import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.brienwheeler.lib.db.domain.GeneratedIdEntityBase;
import com.brienwheeler.lib.db.domain.PersistentAttributeBase;

public abstract class PersistentAttributeDaoBase<AttrClass extends PersistentAttributeBase<AttrClass, OwnerClass>, OwnerClass extends GeneratedIdEntityBase<OwnerClass>>
        extends DeletableDaoBase<AttrClass> implements IPersistentAttributeDao<AttrClass, OwnerClass> {
    @SuppressWarnings("unchecked")
    @Override
    @Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
    public List<AttrClass> findByOwner(long ownerId) {
        Query query = entityManager
                .createQuery("from " + getEntityClass().getSimpleName() + " where owner_id = :ownerId");
        query.setParameter("ownerId", ownerId);
        return (List<AttrClass>) query.getResultList();
    }

    @Override
    @Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
    public AttrClass findByOwnerAndName(long ownerId, String name) {
        Query query = entityManager.createQuery(
                "from " + getEntityClass().getSimpleName() + " where owner_id = :ownerId and name = :name");
        query.setParameter("ownerId", ownerId);
        query.setParameter("name", name);
        return getSingleResultOrNull(query);
    }

    @Override
    @Transactional
    public void deleteByOwner(long ownerId) {
        for (AttrClass attribute : findByOwner(ownerId)) {
            delete(attribute);
        }
    }

}