content: // Licensed to the Apache Software Foundation (ASF) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The ASF licenses this file
  // to you 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 org.apache.cloudstack.engine.cloud.entity.api.db.dao;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.annotation.PostConstruct;
  
  import org.springframework.stereotype.Component;
  
  import org.apache.cloudstack.engine.cloud.entity.api.db.VMComputeTagVO;
  
  import com.cloud.utils.db.GenericDaoBase;
  import com.cloud.utils.db.SearchBuilder;
  import com.cloud.utils.db.SearchCriteria;
  import com.cloud.utils.db.TransactionLegacy;
  
  @Component
  public class VMComputeTagDaoImpl extends GenericDaoBase<VMComputeTagVO, Long> implements VMComputeTagDao {
  
      protected SearchBuilder<VMComputeTagVO> VmIdSearch;
  
      public VMComputeTagDaoImpl() {
      }
  
      @PostConstruct
      public void init() {
          VmIdSearch = createSearchBuilder();
          VmIdSearch.and("vmId", VmIdSearch.entity().getVmId(), SearchCriteria.Op.EQ);
          VmIdSearch.done();
  
      }
  
      @Override
      public void persist(long vmId, List<String> computeTags) {
          TransactionLegacy txn = TransactionLegacy.currentTxn();
  
          txn.start();
          SearchCriteria<VMComputeTagVO> sc = VmIdSearch.create();
          sc.setParameters("vmId", vmId);
          expunge(sc);
  
          for (String tag : computeTags) {
              if (tag != null) {
                  tag = tag.trim();
                  if (tag.length() > 0) {
                      VMComputeTagVO vo = new VMComputeTagVO(vmId, tag);
                      persist(vo);
                  }
              }
          }
          txn.commit();
      }
  
      @Override
      public List<String> getComputeTags(long vmId) {
  
          SearchCriteria<VMComputeTagVO> sc = VmIdSearch.create();
          sc.setParameters("vmId", vmId);
  
          List<VMComputeTagVO> results = search(sc, null);
          List<String> computeTags = new ArrayList<String>(results.size());
          for (VMComputeTagVO result : results) {
              computeTags.add(result.getComputeTag());
          }
  
          return computeTags;
      }
  
  }
  