Boolean search for MARC records

Purpose/Overview:
To allow the user to combine search criteria into a single query to the API endpoint. Criteria may be both within and between fields.

Requirements/Scope:

1. Booleans supported are AND, OR, NOT
2. Booleans may be grouped (1 AND 2) OR 3
3. The search is exposed as a GET request to an API endpoint
4. By default the search returns only records that are not suppressed from discovery

Approach:

Acceptance criteria:

• Booleans may be used when querying any MARC fields that have been identified as searchable
• Results for queries with booleans are returned in under five minutes against a collection of 10 million SRS records