solr/core/src/java/org/apache/solr/handler/export/LongComp.java

/*
 * 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.
 */

package org.apache.solr.handler.export;

interface LongComp {
  int compare(long a, long b);

  long resetValue();

  static class LongAsc implements LongComp {

    public long resetValue() {
      return Long.MAX_VALUE;
    }

    public int compare(long a, long b) {
      return Long.compare(b, a);
    }
  }

  static class LongDesc implements LongComp {

    public long resetValue() {
      return Long.MIN_VALUE;
    }

    public int compare(long a, long b) {
      return Long.compare(a, b);
    }
  }
}