/*
* Copyright 2004 The Apache Software Foundation
*
* Licensed 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.Index{
public class SegmentTermPositionVector : SegmentTermVector, TermPositionVector
{
protected internal int[][] positions;
protected internal TermVectorOffsetInfo[][] offsets;
public static readonly int[] EMPTY_TERM_POS = new int[0];
public SegmentTermPositionVector(System.String field, System.String[] terms, int[] termFreqs, int[][] positions, TermVectorOffsetInfo[][] offsets):base(field, terms, termFreqs)
{
this.offsets = offsets;
this.positions = positions;
}
/// <summary> Returns an array of TermVectorOffsetInfo in which the term is found.
///
/// </summary>
/// <param name="index">The position in the array to get the offsets from
/// </param>
/// <returns> An array of TermVectorOffsetInfo objects or the empty list
/// </returns>
/// <seealso cref="Lucene.Net.analysis.Token">
/// </seealso>
public virtual TermVectorOffsetInfo[] GetOffsets(int index)
{
TermVectorOffsetInfo[] result = TermVectorOffsetInfo.EMPTY_OFFSET_INFO;
if (offsets == null)
return null;
if (index >= 0 && index < offsets.Length)
{
result = offsets[index];
}
return result;
}
/// <summary> Returns an array of positions in which the term is found.
/// Terms are identified by the index at which its number appears in the
/// term String array obtained from the <code>indexOf</code> method.
/// </summary>
public virtual int[] GetTermPositions(int index)
{
int[] result = EMPTY_TERM_POS;
if (positions == null)
return null;
if (index >= 0 && index < positions.Length)
{
result = positions[index];
}
return result;
}
}
}
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