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/*
 * Druid - a distributed column store.
 * Copyright (C) 2012, 2013  Metamarkets Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package io.druid.guice;

import com.google.common.collect.ImmutableMap;
import com.google.inject.Binder;
import com.google.inject.multibindings.MapBinder;
import io.druid.query.Query;
import io.druid.query.QueryRunnerFactory;
import io.druid.query.groupby.GroupByQuery;
import io.druid.query.groupby.GroupByQueryEngine;
import io.druid.query.groupby.GroupByQueryRunnerFactory;
import io.druid.query.metadata.SegmentMetadataQueryRunnerFactory;
import io.druid.query.metadata.metadata.SegmentMetadataQuery;
import io.druid.query.search.SearchQueryRunnerFactory;
import io.druid.query.search.search.SearchQuery;
import io.druid.query.select.SelectQuery;
import io.druid.query.select.SelectQueryRunnerFactory;
import io.druid.query.timeboundary.TimeBoundaryQuery;
import io.druid.query.timeboundary.TimeBoundaryQueryRunnerFactory;
import io.druid.query.timeseries.TimeseriesQuery;
import io.druid.query.timeseries.TimeseriesQueryRunnerFactory;
import io.druid.query.topn.TopNQuery;
import io.druid.query.topn.TopNQueryRunnerFactory;

import java.util.Map;

/**
 */
public class QueryRunnerFactoryModule extends QueryToolChestModule
{
  private static final Map, Class> mappings =
      ImmutableMap., Class>builder()
                  .put(TimeseriesQuery.class, TimeseriesQueryRunnerFactory.class)
                  .put(SearchQuery.class, SearchQueryRunnerFactory.class)
                  .put(TimeBoundaryQuery.class, TimeBoundaryQueryRunnerFactory.class)
                  .put(SegmentMetadataQuery.class, SegmentMetadataQueryRunnerFactory.class)
                  .put(GroupByQuery.class, GroupByQueryRunnerFactory.class)
                  .put(SelectQuery.class, SelectQueryRunnerFactory.class)
                  .put(TopNQuery.class, TopNQueryRunnerFactory.class)
                  .build();

  @Override
  public void configure(Binder binder)
  {
    super.configure(binder);

    final MapBinder, QueryRunnerFactory> queryFactoryBinder = DruidBinders.queryRunnerFactoryBinder(
        binder
    );

    for (Map.Entry, Class> entry : mappings.entrySet()) {
      queryFactoryBinder.addBinding(entry.getKey()).to(entry.getValue());
      binder.bind(entry.getValue()).in(LazySingleton.class);
    }

    binder.bind(GroupByQueryEngine.class).in(LazySingleton.class);
  }
}