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/*
 * This file is part of Log4Jdbc.
 *
 * Log4Jdbc 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 3 of the License, or
 * (at your option) any later version.
 *
 * Log4Jdbc 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 Log4Jdbc.  If not, see .
 *
 */
package fr.ms.log4jdbc.utils;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import fr.ms.log4jdbc.MessageLogger;
import fr.ms.log4jdbc.rdbms.RdbmsSpecifics;
import fr.ms.log4jdbc.utils.Service;

/**
 * 
 * @see Marco4J
 * 
 * 
 * @author Marco Semiao
 * 
 */
public final class ServicesJDBC {

  public static MessageLogger[] getMessageLogger(final String typeLogger) {
    final List results = new ArrayList();

    for (int i = 0; i < MessageLoggerHolder.messageLogger.length; i++) {
      final MessageLogger m = MessageLoggerHolder.messageLogger[i];
      final boolean type = m.isLogger(typeLogger);
      if (type) {
        results.add(m);
      }
    }

    return (MessageLogger[]) results.toArray(new MessageLogger[results.size()]);
  }

  public static RdbmsSpecifics getRdbmsSpecifics(final String classType) {

    for (int i = 0; i < RdbmsSpecificsHolder.rdbmsSpecifics.length; i++) {
      final RdbmsSpecifics r = RdbmsSpecificsHolder.rdbmsSpecifics[i];
      final boolean rdbms = r.isRdbms(classType);
      if (rdbms) {
        return r;
      }
    }
    return null;
  }

  private static class MessageLoggerHolder {
    private final static MessageLogger[] messageLogger = getMessageLogger();

    private final static MessageLogger[] getMessageLogger() {
      MessageLogger[] messageLogger;

      final Iterator providers = Service.providers(MessageLogger.class);

      final List list = new ArrayList();
      while (providers.hasNext()) {
        try {
          final MessageLogger m = (MessageLogger) providers.next();
          list.add(m);
        } catch (final Throwable t) {
          t.printStackTrace();
        }
      }

      messageLogger = (MessageLogger[]) list.toArray(new MessageLogger[list.size()]);

      return messageLogger;
    }
  }

  private static class RdbmsSpecificsHolder {
    private final static RdbmsSpecifics[] rdbmsSpecifics = getRdbmsSpecifics();

    private final static RdbmsSpecifics[] getRdbmsSpecifics() {
      RdbmsSpecifics[] rdbmsSpecifics;

      final Iterator providers = Service.providers(RdbmsSpecifics.class);

      final List list = new ArrayList();
      while (providers.hasNext()) {
        try {
          final RdbmsSpecifics r = (RdbmsSpecifics) providers.next();
          list.add(r);
        } catch (final Throwable t) {
          t.printStackTrace();
        }
      }

      rdbmsSpecifics = (RdbmsSpecifics[]) list.toArray(new RdbmsSpecifics[list.size()]);

      return rdbmsSpecifics;
    }
  }
}