/*
* 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 IndexReader = Lucene.Net.Index.IndexReader;
using Term = Lucene.Net.Index.Term;
using ToStringUtils = Lucene.Net.Util.ToStringUtils;
namespace Lucene.Net.Search.Spans
{
/// Matches spans containing a term.
[Serializable]
public class SpanTermQuery:SpanQuery
{
protected internal Term internalTerm;
/// Construct a SpanTermQuery matching the named term's spans.
public SpanTermQuery(Term term)
{
this.internalTerm = term;
}
/// Return the term whose spans are matched.
public virtual Term Term
{
get { return internalTerm; }
}
public override string Field
{
get { return internalTerm.Field; }
}
public override void ExtractTerms(System.Collections.Generic.ISet terms)
{
terms.Add(internalTerm);
}
public override System.String ToString(System.String field)
{
System.Text.StringBuilder buffer = new System.Text.StringBuilder();
if (internalTerm.Field.Equals(field))
buffer.Append(internalTerm.Text);
else
{
buffer.Append(internalTerm.ToString());
}
buffer.Append(ToStringUtils.Boost(Boost));
return buffer.ToString();
}
public override int GetHashCode()
{
int prime = 31;
int result = base.GetHashCode();
result = prime * result + ((internalTerm == null)?0:internalTerm.GetHashCode());
return result;
}
public override bool Equals(System.Object obj)
{
if (this == obj)
return true;
if (!base.Equals(obj))
return false;
if (GetType() != obj.GetType())
return false;
SpanTermQuery other = (SpanTermQuery) obj;
if (internalTerm == null)
{
if (other.internalTerm != null)
return false;
}
else if (!internalTerm.Equals(other.internalTerm))
return false;
return true;
}
public override Spans GetSpans(IndexReader reader)
{
return new TermSpans(reader.TermPositions(internalTerm), internalTerm);
}
}
}