[NIFI-5094] EL Operations doesn't work for attributes having names with spaces

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.3.0
• Component/s: Configuration
• Environment: OS: RHEL 7.2 ; Apache NiFi: 1.3.0
• Flags: Patch
• Assignee: Unassigned
• Reporter: Adil
• Created: 18/Apr/18 23:20
• Updated: 20/Apr/18 09:08

Description

If we declare an attribute having space in between the name, the EL operations doesn't work the way they should work. 

Example: 

Attribute Name declared(without quotes): 'Custom Extract Query' (value is a SQL query like:

select colA,colB,colC from dbName.tableName'

)
EL Operations tested:

${${'Custom Extract Query'}:toLower:contains('select')}
 ${${'Custom Extract Query'}:toLower:isEmpty()}

If I remove the spaces from the attribute name, the above EL operations work properly. 

Adding more explanation:
I tried multiple possible ways for this to work before mentioning it out as bug. 

Not working snippets:

${${'Custom Extract Query'}:toLower:contains('select')}
${${'Custom Extract Query'}:toLower:isEmpty()}
${'Custom Extract Query':toLower:contains('select')}
{${'Custom Extract Query':toLower:isEmpty()}

 

Working Code:

${${'CustomExtractQuery'}:toLower:contains('select')}
${${'CustomExtractQuery'}:toLower:isEmpty()}
${CustomExtractQuery:toLower:contains('select')}
${CustomExtractQuery:toLower:isEmpty()}