[SOLR-758] Enhance DisMaxQParserPlugin to support full-Solr syntax and to support alternate escaping strategies. - ASF JIRA

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Details

Type: Improvement
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: 1.3
Fix Version/s: 4.9, 6.0
Component/s: search
Labels:
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Description

The DisMaxQParserPlugin has a variety of nice features; chief among them is that is uses the DisjunctionMaxQueryParser. However it imposes limitations on the syntax.

I've enhanced the DisMax QParser plugin to use a pluggable query string re-writer (via subclass extension) instead of hard-coding the logic currently embedded within it (i.e. the escape nearly everything logic). Additionally, I've made this QParser have a notion of a "simple" syntax (the default) or non-simple in which case some of the logic in this QParser doesn't occur because it's irrelevant (phrase boosting and min-should-max in particular). As part of my work I significantly moved the code around to make it clearer and more extensible. I also chose to rename it to suggest it's role as a parser for user queries.

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