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IndexableFieldExtensions.cs
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IndexableFieldExtensions.cs
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using Lucene.Net.Index;
namespace Lucene.Net.Documents.Extensions
{
/*
* 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.
*/
/// <summary>
/// Extension methods to the <see cref="IIndexableField"/> interface.
/// </summary>
public static class IndexableFieldExtensions
{
/// <summary>
/// Returns the field value as <see cref="byte"/> or <c>0</c> if the type
/// is non-numeric.
/// </summary>
/// <param name="field">This <see cref="IIndexableField"/>.</param>
/// <returns>The field value or <c>0</c> if the type is non-numeric.</returns>
public static byte GetByteValueOrDefault(this IIndexableField field)
{
if (field is null) return default;
return field.GetByteValue().GetValueOrDefault();
}
/// <summary>
/// Returns the field value as <see cref="short"/> or <c>0</c> if the type
/// is non-numeric.
/// </summary>
/// <param name="field">This <see cref="IIndexableField"/>.</param>
/// <returns>The field value or <c>0</c> if the type is non-numeric.</returns>
public static short GetInt16ValueOrDefault(this IIndexableField field)
{
if (field is null) return default;
return field.GetInt16Value().GetValueOrDefault();
}
/// <summary>
/// Returns the field value as <see cref="int"/> or <c>0</c> if the type
/// is non-numeric.
/// </summary>
/// <param name="field">This <see cref="IIndexableField"/>.</param>
/// <returns>The field value or <c>0</c> if the type is non-numeric.</returns>
public static int GetInt32ValueOrDefault(this IIndexableField field)
{
if (field is null) return default;
return field.GetInt32Value().GetValueOrDefault();
}
/// <summary>
/// Returns the field value as <see cref="long"/> or <c>0</c> if the type
/// is non-numeric.
/// </summary>
/// <param name="field">This <see cref="IIndexableField"/>.</param>
/// <returns>The field value or <c>0</c> if the type is non-numeric.</returns>
public static long GetInt64ValueOrDefault(this IIndexableField field)
{
if (field is null) return default;
return field.GetInt64Value().GetValueOrDefault();
}
/// <summary>
/// Returns the field value as <see cref="float"/> or <c>0</c> if the type
/// is non-numeric.
/// </summary>
/// <param name="field">This <see cref="IIndexableField"/>.</param>
/// <returns>The field value or <c>0</c> if the type is non-numeric.</returns>
public static float GetSingleValueOrDefault(this IIndexableField field)
{
if (field is null) return default;
return field.GetSingleValue().GetValueOrDefault();
}
/// <summary>
/// Returns the field value as <see cref="double"/> or <c>0</c> if the type
/// is non-numeric.
/// </summary>
/// <param name="field">This <see cref="IIndexableField"/>.</param>
/// <returns>The field value or <c>0</c> if the type is non-numeric.</returns>
public static double GetDoubleValueOrDefault(this IIndexableField field)
{
if (field is null) return default;
return field.GetDoubleValue().GetValueOrDefault();
}
}
}