// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License.  Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
// 
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.host.dao;

import java.util.ArrayList;
import java.util.List;

import javax.ejb.Local;

import com.cloud.host.HostTagVO;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.Transaction;


@Local(value=HostTagsDao.class)
public class HostTagsDaoImpl extends GenericDaoBase<HostTagVO, Long> implements HostTagsDao {
    protected final SearchBuilder<HostTagVO> HostSearch;
    
    protected HostTagsDaoImpl() {
        HostSearch = createSearchBuilder();
        HostSearch.and("hostId", HostSearch.entity().getHostId(), SearchCriteria.Op.EQ);
        HostSearch.done();        
    }

    @Override
    public List<String> gethostTags(long hostId) {
        SearchCriteria<HostTagVO> sc = HostSearch.create();
        sc.setParameters("hostId", hostId);
        
        List<HostTagVO> results = search(sc, null);
        List<String> hostTags = new ArrayList<String>(results.size());
        for (HostTagVO result : results) {
        	hostTags.add(result.getTag());
        }

        return hostTags;
    }
    
    @Override
    public void persist(long hostId, List<String> hostTags) {
        Transaction txn = Transaction.currentTxn();

        txn.start();
        SearchCriteria<HostTagVO> sc = HostSearch.create();
        sc.setParameters("hostId", hostId);
        expunge(sc);
        
        for (String tag : hostTags) {
            tag = tag.trim();
            if(tag.length() > 0) {
                HostTagVO vo = new HostTagVO(hostId, tag);
                persist(vo);
            }
        }
        txn.commit();
    }
}