Concatenate list values

Hi,

 

 

I would apply Itay's 1st approach with a StringReplacer after concatenating.

 

Assume the separate character is a comma, the StringReplacer parameter settings are:

 

Attributes: _concatenated

 

Text to Find: ^[^,]*(,(.+))?$

 

ReplacementText: \\2

 

Use Regular Expressions: yes

 

 

If all elements of the list are not empty, there is the 3rd approach. That is, make the first element empty, then concatenate non-empty elements. AttributeCreator: _list{0} <-- <empty> ListConcatenator: Drop Empty Parts = Yes

 

 

Appendix:

 

A concise Python / Tcl script can concatenate list without the first element. PythonCaller

 

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import fmeobjects def concatenateListWithout1stElement(feature):     delim = ','     src = feature.getAttribute('_list{}')     feature.setAttribute('_concatenated', delim.join(src[1:]) if src else '') -----

 

 

TclCaller

 

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proc concatenateListWithout1stElement {} {   set delim {,}   set elements {}   for {set i 1} {[FME_AttributeExists "_list{$i}"] == 1} {incr i} {     lappend elements [FME_GetAttribute "_list{$i}"]   }   return [join $elements $delim] }

 

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Takashi