Increase the length of text returned by Highlighter - lucene

Question

Initially, I thought setMaxDocCharsToAnalyze(int) will increase the output length, but it does not.
Currently the output generated by my Search (String fragment) is less than a line long and hence makes no sense as a preview.
Can the output generated by getBestFragment() be increased, by some mechanism, to at least 1 sentence or more (it does not matter if it is one and a half sentences or more, but I need it to be long enough to at least make some sense).
Indexing:
Document document = new Document();
document.add(new TextField(FIELD_CONTENT, content, Field.Store.YES));
document.add(new StringField(FIELD_PATH, path, Field.Store.YES));
indexWriter.addDocument(document);
Searching
QueryParser queryParser = new QueryParser(FIELD_CONTENT, new StandardAnalyzer());
Query query = queryParser.parse(searchQuery);
QueryScorer queryScorer = new QueryScorer(query, FIELD_CONTENT);
Fragmenter fragmenter = new SimpleSpanFragmenter(queryScorer);
Highlighter highlighter = new Highlighter(queryScorer); // Set the best scorer fragments
highlighter.setMaxDocCharsToAnalyze(100000); //"HAS NO EFFECT"
highlighter.setTextFragmenter(fragmenter);
// STEP B
File indexFile = new File(INDEX_DIRECTORY);
Directory directory = FSDirectory.open(indexFile.toPath());
IndexReader indexReader = DirectoryReader.open(directory);
// STEP C
System.out.println("query: " + query);
ScoreDoc scoreDocs[] = searcher.search(query, MAX_DOC).scoreDocs;
for (ScoreDoc scoreDoc : scoreDocs)
{
//System.out.println("1");
Document document = searcher.getDocument(scoreDoc.doc);
String title = document.get(FIELD_CONTENT);
TokenStream tokenStream = TokenSources.getAnyTokenStream(indexReader,
scoreDoc.doc, FIELD_CONTENT, document, new StandardAnalyzer());
String fragment = highlighter.getBestFragment(tokenStream, title); //Increase the length of the this String this is the output
System.out.println(fragment + "-------");
}
Sample Output
query: +Content:canada +Content:minister
|Liberal]] [[Prime Minister of Canada|Prime Minister]] [[Pierre Trudeau]] led a [[Minority-------
. Thorson, Minister of National War Services, Ottawa. Printed in Canada Description: British lion-------
politician of the [[New Zealand Labour Party| Labour Party]], and a cabinet minister. He represented-------
|}}}| ! [[Minister of Finance (Canada)|Minister]] {{!}} {{{minister-------
, District of Franklin''. Ottawa: Minister of Supply and Services Canada, 1977. ISBN 0660008351
25]], [[1880]] – [[March 4]], [[1975]]) was a [[Canada|Canadian]] provincial and federal-------
-du-Quebec]] region, in [[Canada]]. It is named after the first French Canadian to become Prime-------
11569347, Cannon_family_(Canada) ::: {{for|the American political family|Cannon family-------
minister of [[Guyana]] and prominent Hindu politician in [[Guyana]]. He also served, at various times-------
11559743, Mohammed_Hussein_Al_Shaali ::: '''Mohammed Hussein Al Shaali''' is the former Minister-------

Answer 1

The Fragmenter is the piece that controls this behavior. You can pass an int into the SimpleSpanFragmenter constructor to control the size of the fragments it produces (in bytes). The default size is 100. For example, to double that:
Fragmenter fragmenter = new SimpleSpanFragmenter(queryScorer, 200);
As far as splitting on sentence boundaries, there isn't a fragmenter for that, out of the box. Someone posted their implementation of one here. It's an extremely naive implementation, but you may find it helpful if you want to go down that particular rabbit hole.