FME 2017.0.0.0
I try to use StringReplacer to uppercase letters to lowercase letters, but failed.
Attribute:attr (has a value "ABCD")
Mode:Realace Regular Expression
Text To Replace:([A-Z])
Replacement Text:@LowerCase(\\1)
I also tried the @UpperCase,@Format,@PadLeft,@PadRight..., but those function seems does not work for regular expression groups (\\1) too.
String functions cannot be used in a regular expression group?
Hi @taojunabc, why not use the StringCaseChanger, or am I missing something?
Hi @itay,
Sorry, I did not describe the problem clearly, My ultimate goal is to handle the list attributes, such as attribute{}.name. But StringCaseChanger can not be applied to the list attributes.
Please refer to the link below?
Lowercase PostGIS table namesIn FME hub, there is a custom transformer called ListStringReplacer, It is possible to use regular expressions, but I tried it and found that it has the same behavior as StringReplacer, in order to simplify the problem, I mentioned only StringReplacer.
Hi @taojunabc, I don't know if it's intentional that FME String Functions do not work for the resulting string from the StringReplacer. I remember that there was the same question before, but was not able to find out that.
Scripting may be a quick workaround in your case.
PythonCaller Script Example:
def toLower(feature):
names = feature.getAttribute('attribute{}.name')
if names:
for i, s in enumerate(names):
feature.setAttribute('attribute{%d}.name' % i, s.lower())
TclCaller Script Example:
proc toLower {} {
for {set i 0} {1} {incr i} {
set attr "attribute{$i}.name"
if {![FME_AttributeExists $attr]} {
break
}
FME_SetAttribute $attr [string tolower [FME_GetAttribute $attr]]
}
}
Hi @itay,
Sorry, I did not describe the problem clearly, My ultimate goal is to handle the list attributes, such as attribute{}.name. But StringCaseChanger can not be applied to the list attributes.
Please refer to the link below?
Lowercase PostGIS table namesIn FME hub, there is a custom transformer called ListStringReplacer, It is possible to use regular expressions, but I tried it and found that it has the same behavior as StringReplacer, in order to simplify the problem, I mentioned only StringReplacer.
Hi @taojunabc, I don't know if it's intentional that FME String Functions do not work for the resulting string from the StringReplacer. I remember that there was the same question before, but was not able to find out that.
Scripting may be a quick workaround in your case.
PythonCaller Script Example:
def toLower(feature):
names = feature.getAttribute('attribute{}.name')
if names:
for i, s in enumerate(names):
feature.setAttribute('attribute{%d}.name' % i, s.lower())
TclCaller Script Example:
proc toLower {} {
for {set i 0} {1} {incr i} {
set attr "attribute{$i}.name"
if {![FME_AttributeExists $attr]} {
break
}
FME_SetAttribute $attr [string tolower [FME_GetAttribute $attr]]
}
}
I did not think of other solution, the solution by @takashi is very simple, I decided to use his solution.