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/*
 * Sonar, open source software quality management tool.
 * Copyright (C) 2009 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.api.platform;

import org.sonar.api.BatchComponent;
import org.sonar.api.ServerComponent;
import org.sonar.api.database.DatabaseSession;

import javax.persistence.Query;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * @since 2.2
 */
public class LocalExtensionRegistry implements BatchComponent, ServerComponent {

  private DatabaseSession session;

  public LocalExtensionRegistry(DatabaseSession session) {
    this.session = session;
  }

  public List getPlugins() {
    Query query = session.createQuery("FROM " + LocalExtension.class.getSimpleName() + " e WHERE e.type=:type");
    query.setParameter("type", LocalExtension.Type.PLUGIN);
    return (List) query.getResultList();
  }


  public List getExtensions() {
    Query query = session.createQuery("FROM " + LocalExtension.class.getSimpleName());
    return (List) query.getResultList();
  }


  public List getFiles() {
    Query query = session.createQuery("FROM " + LocalExtensionFile.class.getSimpleName());
    return query.getResultList();
  }

  public LocalExtension register(LocalExtension extension, List files) {
    extension = session.save(extension);
    Query query = session.createQuery("DELETE FROM " + LocalExtensionFile.class.getSimpleName() + " WHERE extensionId=:id");
    query.setParameter("id", extension.getId());
    query.executeUpdate();

    for (File file : files) {
      LocalExtensionFile localFile = new LocalExtensionFile();
      localFile.setExtensionId(extension.getId());
      localFile.setPluginKey(extension.getPluginKey());
      localFile.setFilename(file.getName());
      session.save(localFile);
    }

    session.commit();
    return extension;
  }

  public void keep(List extensions) {
    List ids = new ArrayList();
    for (LocalExtension extension : extensions) {
      ids.add(extension.getId());
    }

    if (!ids.isEmpty()) {
      Query query = session.createQuery("DELETE " + LocalExtensionFile.class.getSimpleName() + " WHERE extensionId NOT IN (:ids)");
      query.setParameter("ids", ids);
      query.executeUpdate();

      query = session.createQuery("DELETE " + LocalExtension.class.getSimpleName() + " WHERE id NOT IN (:ids)");
      query.setParameter("ids", ids);
      query.executeUpdate();
      session.commit();
    }
  }
}