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'rapiddweller Common' is an open source Java library forked from Databene Commons by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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.rapiddweller.common.collection;

import com.rapiddweller.common.NullSafeComparator;
import com.rapiddweller.common.OrderedMap;

import java.util.Map;

/**
 * {@link OrderedMap} implementation which assigns name strings to objects preserving the capitalization
 * of stored names but allowing retrieval in a different capitalization.
 * Created: 12.12.2012 11:12:16
 *
 * @param  the type of the collection's elements
 * @author Volker Bergmann
 * @since 0.5.21
 */
public class CaseInsensitiveOrderedNameMap extends OrderedMap {

  private static final long serialVersionUID = 5774443959123444148L;

  // constructors + factory methods ----------------------------------------------------------------------------------

  /**
   * Instantiates a new Case insensitive ordered name map.
   */
  public CaseInsensitiveOrderedNameMap() {
  }

  /**
   * Instantiates a new Case insensitive ordered name map.
   *
   * @param that the that
   */
  public CaseInsensitiveOrderedNameMap(Map that) {
    super(that);
  }

  // Map interface implementation ------------------------------------------------------------------------------------

  @Override
  public boolean containsKey(Object key) {
    return containsKey((String) key);
  }

  /**
   * Contains key boolean.
   *
   * @param key the key
   * @return the boolean
   */
  public boolean containsKey(String key) {
    boolean result = super.containsKey(key);
    if (result) {
      return result;
    }
    for (String tmp : super.keySet()) {
      if (tmp.equalsIgnoreCase(key)) {
        return true;
      }
    }
    return result;
  }

  @Override
  public E get(Object key) {
    return get((String) key);
  }

  /**
   * Get e.
   *
   * @param key the key
   * @return the e
   */
  public E get(String key) {
    E result = super.get(key);
    if (result != null) {
      return result;
    }
    for (Map.Entry entry : super.entrySet()) {
      String tmp = entry.getKey();
      if ((tmp == null && key == null) || (tmp != null && tmp.equalsIgnoreCase(key))) {
        return entry.getValue();
      }
    }
    return null;
  }

  @Override
  public Map.Entry getEntry(String key) {
    E value = super.get(key);
    if (value != null) {
      return new MapEntry<>(key, value);
    }
    for (Map.Entry entry : super.entrySet()) {
      String tmp = entry.getKey();
      if ((tmp == null && key == null) || (tmp != null && tmp.equalsIgnoreCase(key))) {
        String resultKey = entry.getKey();
        return new MapEntry<>(resultKey, entry.getValue());
      }
    }
    return null;
  }

  @Override
  public E put(String key, E value) {
    return super.put(key, value);
  }

  /**
   * Remove e.
   *
   * @param key the key
   * @return the e
   */
  public E remove(String key) {
    E result = super.remove(key);
    if (result != null) {
      return result;
    }
    for (Map.Entry entry : super.entrySet()) {
      if (NullSafeComparator.equals(entry.getKey(), key)) {
        return super.remove(entry.getKey());
      }
    }
    return null;
  }

}