Highlighter: Option for target number of characters output
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Key: SOLR-3114
URL: https://issues.apache.org/jira/browse/SOLR-3114
Project: Solr
Issue Type: Improvement
Components: highlighter
Reporter: Jan Høydahl
Often you want the dynamic teaser to be about the same visual size for each
article in the result list. Google's web search for instance will display 2
lines of teaser, whether there are one or three snippets.
In Solr you can control {{hl.snippets}} and {{hl.fragSize}}, but not the
resulting total size. If you have three snippets matching, the teaser will be
three times as big as for documents with one snippet matching.
I propose a parameter {{hl.targetSize}} as an alternative to {{hl.fragsize}},
which controls the total number of characters to output in the teaser. So
instead of saying {{&hl.snippets=3&hl.fragSize=100}} giving teasers sized
between 100-300 characters, you would say {{&hl.snippets=3&hl.targetSize=300}}
effectively resulting in the same output as long as there are three snippets,
but if there is only one, its fragSize would be adjusted to 300.
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