[SearchSnippet] Highlight memory implementation

[hungphan227]

• Create memory class
• Use search method of SimpleMessageSearchIndex to get the list of MessageId
• Use the list of MessageId to retrieve list of Message
• For each Message, find text that specified in SearchQuery and add highlight tag around them

DoD: Integration test

[vttranlina]

For each Message, find text that specified in SearchQuery and add highlight tag around them

In the epic topic
Benoit mentioned:

Locate part of their text (exact match) and show 100 chars before and 100 chars after. Ideally find a library for that.

[hungphan227]

I think we can use java regular expression

[vttranlina]

What do you think about using lucene-highlighter for it?
The @quantranhong1999 poc at #5256

IMO it quiet fine!

// Initialize an in-memory index using ByteBuffersDirectory
        Directory directory = new ByteBuffersDirectory();

Lucene "memory" for SearchSnippet memory implement
Lucene "prod" for SearchSnippet Lucene implement

[chibenwa]

What do you think about using lucene-highlighter for it?

...

I LOVE THE IDEA

A LOT

(and I would go further)

How about removing scanning search and replacing it with a memory based Lucene?

Of course we can trigger a mailing list discussion...

[Arsnael]

Use searchHilighter interface instead

[vttranlina]

How about removing scanning search and replacing it with a memory based Lucene?

mailing-list:
https://www.mail-archive.com/server-dev@james.apache.org/msg74520.html

[vttranlina]

WIP pr apache#2429