CommentDAOImpl.java

//
// Copyright 2009 Robin Komiwes, Bruno Verachten, Christophe Cordenier
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// 	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package com.wooki.domain.dao;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;

import com.wooki.domain.model.Comment;
import com.wooki.domain.model.CommentState;

public class CommentDAOImpl extends WookiGenericDAOImpl<Comment, Long> implements CommentDAO
{

    public CommentDAOImpl(Session session)
    {
        super(session);
    }

    public boolean isOwner(Long commId, String username)
    {
        assert commId != null;
        Query query = this.session
                .createQuery("select count(c) from "
                        + this.getEntityType()
                        + " c join c.user as u where c.id=:id and u.username=:un and c.deletionDate is null");
        Long result = (Long) query.setParameter("un", username).setParameter("id", commId)
                .uniqueResult();
        return result > 0;
    }

    public List<Comment> listForPublication(Long publicationId)
    {
        assert publicationId != null;
        Query query = this.session
                .createQuery("from "
                        + getEntityType()
                        + " c where c.publication.id=:pubId and c.state!=:st and c.deletionDate is null order by c.creationDate desc");
        query.setParameter("pubId", publicationId);
        query.setParameter("st", CommentState.REJECTED);
        return query.list();
    }

    public List<Comment> listForChapter(Long chapterId)
    {
        assert chapterId != null;
        Query query = this.session
                .createQuery("from "
                        + getEntityType()
                        + " c where c.publication.chapter.id=:chapterId and c.state!=:st and c.deletionDate is null order by c.creationDate desc");
        query.setParameter("chapterId", chapterId);
        query.setParameter("st", CommentState.REJECTED);
        return query.list();
    }

    public List<Comment> listForPublicationAndDomId(Long publicationId, String domId)
    {
        assert publicationId != null;
        Query query = this.session
                .createQuery("from "
                        + getEntityType()
                        + " c where c.publication.id=:pubId and c.state!=:st and c.domId=:cid and c.deletionDate is null order by c.creationDate desc");
        query.setParameter("pubId", publicationId);
        query.setParameter("st", CommentState.REJECTED);
        query.setParameter("cid", domId);

        return query.list();
    }

    public List<Object[]> listCommentsInfoForPublication(Long publicationId)
    {
        assert publicationId != null;
        String queryStr = String
                .format(
                        "select c.domId, count(c.domId) from %s c where c.publication.id=:id and c.state!=:st and c.deletionDate is null group by c.domId",
                        Comment.class.getName());
        Query query = this.session.createQuery(queryStr);
        query.setParameter("id", publicationId);
        query.setParameter("st", CommentState.REJECTED);
        return query.list();
    }

}