search types in gs3 GLI

[kjdon]

I have changed how they are represented in config file (the code and config file previously didn't match at all).

In collectionConfig.xml, inside search element, have

<searchType name='plain'/>
<searchType name='simpleform'/>
<searchType name='advancedform'/>

Need to make GLI write this out to config file instead of a format tag.

[kjdon]

now reads in and writes out searchType elements, but internally they are handled as format statements