[KAFKA-4053] Refactor TopicCommand to remove redundant if/else statements

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.10.0.1
• Fix Version/s: 0.10.1.0
• Component/s: admin
• Assignee: Unassigned
• Reporter: Shuai Zhang
• Created: 17/Aug/16 09:24
• Updated: 22/Aug/16 01:59
• Resolved: 19/Aug/16 18:59

Description

In TopicCommand, there are a lot of redundant if/else statements, such as
```val ifNotExists = if (opts.options.has(opts.ifNotExistsOpt)) true else false```

We can refactor it as the following statement:
```val ifNotExists = opts.options.has(opts.ifNotExistsOpt)```

Issue Links

• links to: GitHub Pull Request #1751