[LUCENE-7644] FieldComparatorSource.newComparator() doesn't need to throw IOException

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 6.5
• Lucene Fields: New
• Assignee: Alan Woodward
• Reporter: Alan Woodward
• Created: 18/Jan/17 17:18
• Updated: 28/Aug/22 15:09
• Resolved: 18/Jan/17 19:18

Description

All IO operations on FieldComparator are done in .getLeafComparator(), so there's no need to declare IOException on their constructors.

This bubbles back up and lets us remove throws clauses from a number of constructors, TopDocs.merge(), and so on.