/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Lucene.Net.Index.Memory
{
class TermComparer
{
///
/// Sorts term entries into ascending order; also works for
/// Arrays.binarySearch() and Arrays.sort()
///
public static int KeyComparer(KeyValuePair x, KeyValuePair y)
where TKey : class, IComparable
{
if (x.Key == y.Key) return 0;
return typeof (TKey) == typeof (string)
? string.Compare(x.Key as string, y.Key as string, StringComparison.Ordinal)
: x.Key.CompareTo(y.Key);
}
}
sealed class TermComparer : TermComparer, IComparer>
{
public int Compare(KeyValuePair x, KeyValuePair y)
{
return KeyComparer(x, y);
}
}
}