/*
* 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 Term = Lucene.Net.Index.Term;
using TermPositions = Lucene.Net.Index.TermPositions;
namespace Lucene.Net.Search.Spans
{
/// Expert:
/// Public for extension only
///
public class TermSpans:Spans
{
protected internal TermPositions positions;
protected internal Term term;
protected internal int doc;
protected internal int freq;
protected internal int count;
protected internal int position;
public TermSpans(TermPositions positions, Term term)
{
this.positions = positions;
this.term = term;
doc = - 1;
}
public override bool Next()
{
if (count == freq)
{
if (!positions.Next())
{
doc = System.Int32.MaxValue;
return false;
}
doc = positions.Doc();
freq = positions.Freq();
count = 0;
}
position = positions.NextPosition();
count++;
return true;
}
public override bool SkipTo(int target)
{
if (!positions.SkipTo(target))
{
doc = System.Int32.MaxValue;
return false;
}
doc = positions.Doc();
freq = positions.Freq();
count = 0;
position = positions.NextPosition();
count++;
return true;
}
public override int Doc()
{
return doc;
}
public override int Start()
{
return position;
}
public override int End()
{
return position + 1;
}
// TODO: Remove warning after API has been finalized
public override System.Collections.Generic.ICollection GetPayload()
{
byte[] bytes = new byte[positions.GetPayloadLength()];
bytes = positions.GetPayload(bytes, 0);
System.Collections.Generic.List val = new System.Collections.Generic.List();
val.Add(bytes);
return val;
}
// TODO: Remove warning after API has been finalized
public override bool IsPayloadAvailable()
{
return positions.IsPayloadAvailable();
}
public override System.String ToString()
{
return "spans(" + term.ToString() + ")@" + (doc == - 1?"START":((doc == System.Int32.MaxValue)?"END":doc + "-" + position));
}
public virtual TermPositions GetPositions()
{
return positions;
}
}
}