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/*
 * Copyright 2014 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.way.sql;

import static com.google.common.collect.Lists.newArrayList;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import br.com.objectos.way.core.auto.AutoPojo;

/**
 * @author [email protected] (Marcio Endo)
 */
@AutoPojo
public abstract class InsertValuesExe extends InsertExe implements CanBeBatched {

  private final List> listenerList = newArrayList();

  InsertValuesExe() {
  }

  public static InsertValuesExeBuilder builder() {
    return new InsertValuesExeBuilderPojo();
  }

  @Override
  public void addGeneratedKeyListener(Generated listener) {
    listenerList.add(listener);
  }

  public BatchExe binder() {
    return new BatchExe(this, statement());
  }

  public void execute() throws SqlException {
    execute(new ThisCommand());
  }

  private class ThisCommand extends Command {

    @Override
    void execute(PreparedStatement statement) throws SQLException {
      if (listenerList.isEmpty()) {
        executeBatch();
        return;
      }

      executeBatch();
      ResultSet generatedKeys = getGeneratedKeys();
      for (Generated lazy : listenerList) {
        if (generatedKeys.next()) {
          lazy.extract(generatedKeys);
        }
      }
    }

  }

}