package org.apache.continuum.dao;
   
   /*
    * 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.
   */
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  import javax.jdo.Extent;
  import javax.jdo.PersistenceManager;
  import javax.jdo.Query;
  import javax.jdo.Transaction;
  
  import org.apache.maven.continuum.model.system.Installation;
  import org.apache.maven.continuum.model.system.Profile;
  import org.apache.maven.continuum.store.ContinuumStoreException;
  import org.codehaus.plexus.util.StringUtils;
  import org.springframework.stereotype.Repository;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   * @version $Id: InstallationDaoImpl.java 790386 2009-07-01 21:27:25Z evenisse $
   * @plexus.component role="org.apache.continuum.dao.InstallationDao"
   */
  @Repository("installationDao")
  public class InstallationDaoImpl
      extends AbstractDao
      implements InstallationDao
  {
      public Installation addInstallation( Installation installation )
      {
          return (Installation) addObject( installation );
      }
  
      public List<Installation> getAllInstallations()
      {
          return getAllObjectsDetached( Installation.class, "name ascending", null );
      }
  
      public void removeInstallation( Installation installation )
          throws ContinuumStoreException
      {
          // first delete link beetwen profile and this installation
          // then removing this
          //attachAndDelete( installation );
          PersistenceManager pm = getPersistenceManager();
  
          Transaction tx = pm.currentTransaction();
  
          try
          {
              // this must be done in the same transaction
              tx.begin();
  
              // first removing linked jdk
  
              Extent extent = pm.getExtent( Profile.class, true );
  
              Query query = pm.newQuery( extent );
  
              query.declareImports( "import java.lang.String" );
  
              query.declareParameters( "String name" );
  
              query.setFilter( "this.jdk.name == name" );
  
              Collection<Profile> result = (Collection) query.execute( installation.getName() );
  
              if ( result.size() != 0 )
              {
                  for ( Profile profile : result )
                  {
                      profile.setJdk( null );
                      pm.makePersistent( profile );
                  }
              }
  
              // removing linked builder
              query = pm.newQuery( extent );
  
              query.declareImports( "import java.lang.String" );
  
             query.declareParameters( "String name" );
 
             query.setFilter( "this.builder.name == name" );
 
             result = (Collection) query.execute( installation.getName() );
 
             if ( result.size() != 0 )
             {
                 for ( Profile profile : result )
                 {
                     profile.setBuilder( null );
                     pm.makePersistent( profile );
                 }
             }
 
             // removing linked env Var
             query = pm.newQuery( extent );
 
             query.declareImports( "import java.lang.String" );
             query.declareImports( "import " + Installation.class.getName() );
 
             query.declareParameters( "Installation installation" );
 
             query.setFilter( "environmentVariables.contains(installation)" );
 
             //query = pm
             //    .newQuery( "SELECT FROM profile WHERE environmentVariables.contains(installation) && installation.name == name" );
 
             result = (Collection) query.execute( installation );
 
             if ( result.size() != 0 )
             {
                 for ( Profile profile : result )
                 {
                     List<Installation> newEnvironmentVariables = new ArrayList<Installation>();
                     for ( Installation current : (Iterable<Installation>) profile.getEnvironmentVariables() )
                     {
                         if ( !StringUtils.equals( current.getName(), installation.getName() ) )
                         {
                             newEnvironmentVariables.add( current );
                         }
                     }
                     profile.setEnvironmentVariables( newEnvironmentVariables );
                     pm.makePersistent( profile );
                 }
             }
 
             pm.deletePersistent( installation );
 
             tx.commit();
 
         }
         finally
         {
             rollback( tx );
         }
     }
 
     public void updateInstallation( Installation installation )
         throws ContinuumStoreException
     {
         updateObject( installation );
     }
 
     public Installation getInstallation( int installationId )
         throws ContinuumStoreException
     {
         PersistenceManager pm = getPersistenceManager();
 
         Transaction tx = pm.currentTransaction();
 
         try
         {
             tx.begin();
 
             Extent extent = pm.getExtent( Installation.class, true );
 
             Query query = pm.newQuery( extent );
 
             query.declareImports( "import java.lang.String" );
 
             query.declareParameters( "int installationId" );
 
             query.setFilter( "this.installationId == installationId" );
 
             Collection result = (Collection) query.execute( installationId );
 
             if ( result.size() == 0 )
             {
                 tx.commit();
 
                 return null;
             }
 
             Object object = pm.detachCopy( result.iterator().next() );
 
             tx.commit();
 
             return (Installation) object;
         }
         finally
         {
             rollback( tx );
         }
     }
 }