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From xin liu <>
Subject how to get total hit count for each Searchable?
Date Thu, 10 Jul 2008 22:07:41 GMT
I have individual index files for Audio, Image and PDF files. We build common meta fields
for them. When I search for a string, I want the search defaults to return mixed search results
from these 3 different index based on relevancy. But I also wants to know hit count for each
individual index type. For example, I want to get:
Mixed together total hit count: 105, with the first 10 HitItem.
Total hit in Audio: 73
Total hit in Image: 17
Total hit in PDF:    15

Right now, I'm doing the following way:
1. Gets one Searchable instance for Audio, one for Image, and one for PDF index;
2. construct ParallelMultiSearcher s with above 3 Searchable as parameters; call its search
to get total hit count and first 10 hit items;
3. Call Audio searchable to get total hit count in Audio;
4. Call Image searchable to get total hit count for Image;
5. Call PDF searchable to get total hit count for Image.

So, Lucene will need do 6 search operations for these 3 index. Definitely, the performance
will be an issue. 

Any experts can give me some advice? Thanks!


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