: The correct way for a plugin to do the sort of thing you are trying to do : would be to use an instance of SolrQueryParser -- see for example the code : in LuceneQParser and how it uses SolrQueryParser ... you'll most likeley : just want to use LuceneQParser directly in your plugin to simplify things.
...or depending on how low level you want to deal with things, consider using IndexSchema.getField(...).getFieldType().getRangeQuery(null, ...) to build your range Query object directly from the low/high end points provided as input instead of needing to build a string just to parse it again. -Hoss http://www.lucidworks.com/
