[LUCENE-4441] Prefix and postfix all extracted phrases when phrase is not complete

• Type: Wish
• Status: Open
• Priority: Trivial
• Resolution: Unresolved
• Affects Version/s: 3.6.1, 4.0-BETA
• Component/s: modules/highlighter
• Labels: highlight
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: David Pilato
• Created: 27/Sep/12 13:55
• Updated: 28/Aug/22 13:28

Description

Heya,
I would like to be able to prefix and postfix phrases when extracted text is not a complete phrase.

For example, let's say I have a phrase like

 
"Here is my text"

and another like

 
"This is a very long text and I want that Lucene highlight it even if this content is very long."

When highlighting "text", I get something like:

 
"Here is my <B>text</B>"
"This is a very long <B>text</B> and I want that Lucene highlight"

What I would like to get back is:

 
"Here is my <B>text</B>"
"This is a very long <B>text</B> and I want that Lucene highlight [...]"

As you can see, the " [...]" is added at the end because we extracted content from the field and not all the field.

So, we can add some options to Highlighter (FastVectorHighlighter) as follow:

  // Default values :
  // preLine = null;
  // postLine = null;
  public final String[] getBestFragments( final FieldQuery fieldQuery, IndexReader reader, int docId,
      String fieldName, int fragCharSize, int maxNumFragments,
      FragListBuilder fragListBuilder, FragmentsBuilder fragmentsBuilder,
      String[] preTags, String[] postTags, String preLine, String postLine, Encoder encoder ) throws IOException;

I hope this is doable. :-/