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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;
namespace Lucene.Net.Documents
{
/// <summary> Declare what fields to load normally and what fields to load lazily
///
///
/// </summary>
[Serializable]
public class SetBasedFieldSelector : FieldSelector
{
private System.Collections.Hashtable fieldsToLoad;
private System.Collections.Hashtable lazyFieldsToLoad;
/// <summary> Pass in the Set of {@link Field} names to load and the Set of {@link Field} names to load lazily. If both are null, the
/// Document will not have any {@link Field} on it.
/// </summary>
/// <param name="fieldsToLoad">A Set of {@link String} field names to load. May be empty, but not null
/// </param>
/// <param name="lazyFieldsToLoad">A Set of {@link String} field names to load lazily. May be empty, but not null
/// </param>
public SetBasedFieldSelector(System.Collections.Hashtable fieldsToLoad, System.Collections.Hashtable lazyFieldsToLoad)
{
this.fieldsToLoad = fieldsToLoad;
this.lazyFieldsToLoad = lazyFieldsToLoad;
}
/// <summary> Indicate whether to load the field with the given name or not. If the {@link Field#Name()} is not in either of the
/// initializing Sets, then {@link Lucene.Net.Documents.FieldSelectorResult#NO_LOAD} is returned. If a Field name
/// is in both <code>fieldsToLoad</code> and <code>lazyFieldsToLoad</code>, lazy has precedence.
///
/// </summary>
/// <param name="fieldName">The {@link Field} name to check
/// </param>
/// <returns> The {@link FieldSelectorResult}
/// </returns>
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;
}
}
}
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