SetBasedFieldSelector.cs

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/* 
 * 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;

namespace Lucene.Net.Documents
{
    [Serializable]
    public class SetBasedFieldSelector : FieldSelector
    {
        private ISet<string> fieldsToLoad;
        private ISet<string> lazyFieldsToLoad;
        
        public SetBasedFieldSelector(ISet<string> fieldsToLoad, ISet<string> lazyFieldsToLoad)
        {
            this.fieldsToLoad = fieldsToLoad;
            this.lazyFieldsToLoad = lazyFieldsToLoad;
        }

        public virtual FieldSelectorResult Accept(System.String fieldName)
        {
            FieldSelectorResult result = FieldSelectorResult.NO_LOAD;
            if (fieldsToLoad.Contains(fieldName) == true)
            {
                result = FieldSelectorResult.LOAD;
            }
            if (lazyFieldsToLoad.Contains(fieldName) == true)
            {
                result = FieldSelectorResult.LAZY_LOAD;
            }
            return result;
        }
    }
}