/*
 * Copyright 2010-2013 Luca Garulli (l.garulli--at--orientechnologies.com)
 *
 * 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 com.orientechnologies.orient.core.collate;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * the Collating strategy when comparison in SQL statement is required.
 * 
 * @author Luca Garulli (l.garulli--at--orientechnologies.com)
 * 
 */
public class ODefaultCollateFactory implements OCollateFactory {

  private static final Map<String, OCollate> COLLATES = new HashMap<String, OCollate>(2);

  static {
    register(new ODefaultCollate());
    register(new OCaseInsensitiveCollate());
  }

  /**
   * @return Set of supported collate names of this factory
   */
  @Override
  public Set<String> getNames() {
    return COLLATES.keySet();
  }

  /**
   * Returns the requested collate
   * 
   * @param name
   */
  @Override
  public OCollate getCollate(final String name) {
    return COLLATES.get(name);
  }

  private static void register(final OCollate iCollate) {
    COLLATES.put(iCollate.getName(), iCollate);
  }
}
