package org.apache.lucene.search.highlight;
/**
* Copyright 2002-2004 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.
*/
import org.apache.lucene.analysis.Token;
/**
* {@link Fragmenter} implementation which breaks text up into same-size
* fragments with no concerns over spotting sentence boundaries.
* @author mark@searcharea.co.uk
*/
public class SimpleFragmenter implements Fragmenter
{
private static final int DEFAULT_FRAGMENT_SIZE =100;
private int currentNumFrags;
private int fragmentSize;
public SimpleFragmenter()
{
this(DEFAULT_FRAGMENT_SIZE);
}
/**
*
* @param fragmentSize size in bytes of each fragment
*/
public SimpleFragmenter(int fragmentSize)
{
this.fragmentSize=fragmentSize;
}
/* (non-Javadoc)
* @see org.apache.lucene.search.highlight.TextFragmenter#start(java.lang.String)
*/
public void start(String originalText)
{
currentNumFrags=1;
}
/* (non-Javadoc)
* @see org.apache.lucene.search.highlight.TextFragmenter#isNewFragment(org.apache.lucene.analysis.Token)
*/
public boolean isNewFragment(Token token)
{
boolean isNewFrag= token.endOffset()>=(fragmentSize*currentNumFrags);
if(isNewFrag)
{
currentNumFrags++;
}
return isNewFrag;
}
/**
* @return size in bytes of each fragment
*/
public int getFragmentSize()
{
return fragmentSize;
}
/**
* @param size size in bytes of each fragment
*/
public void setFragmentSize(int size)
{
fragmentSize = size;
}
}
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