[LANG-422] StrBuilder appendSeparator with defaultIfEmpty

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4
• Fix Version/s: 2.5
• Component/s: lang.text.*
• Assignee: Unassigned
• Reporter: Robert Scholte
• Created: 08/Apr/08 10:40
• Updated: 25/Feb/10 19:25
• Resolved: 20/Oct/09 06:12

Description

If would like to suggest the following method for the StrBuilder class:

appendSeparator(String separator, String defaultIfEmpty)

it's usage is very handy for building queries (a much more I guess)

StrBuilder whereClause = new StrBuilder();
if(searchCommand.priority != null) {
  whereClause.appendSeparator(" and", " where");
  whereClause.append(" priority = ?")
}
if(searchCommand.component != null) {
  whereClause.appendSeparator(" and", " where");
  whereClause.append(" component = ?")
}

// if(!whereClause.isEmpty()) {
// selectClause.append(" where")
// selectClause.append(whereClause)
//}
selectClause.append(whereClause)

this can be done for every queryClause (eliminating all isEmpty-checks), but there are usefull usecases