List creation question

[mjohnsonaz74]

I created a service to return JSON to a client. The code works fine, but I'm trying to see if I can clean up some ugly code.

def capitalTypeList = []
   
if (params.capital_type) {
  if (params.capital_type instanceof String) {
    capitalTypeList << params.capital_type
  } else {
    capitalTypeList.addAll(params.capital_type)
  }
}

In this code chunk, I create a list into which I will insert the values returned in the named parameter. The problem I run into is that a single param is of type String, whereas multiple params show up as a collection. As you can see from the code, I test for String and insert, otherwise I have to use an addAll method to add the collection. Does somebody know of an easier way to force single AND multiple value params into a list?

[Sébastien Blanc]

You could use the params.list() feature :

if (params.capital_type){

capitalTypelist.addAll(params.list("capital_type")
}
Envoyé de mon iPhone

Le Jan 21, 2011 à 21:31, mjohnsonaz74 <[hidden email]> a écrit :

I created a service to return JSON to a client. The code works fine, but I'm trying to see if I can clean up some ugly code.

def capitalTypeList = []
   
if (params.capital_type) {
  if (params.capital_type instanceof String) {
    capitalTypeList << params.capital_type
  } else {
    capitalTypeList.addAll(params.capital_type)
  }
}

In this code chunk, I create a list into which I will insert the values returned in the named parameter. The problem I run into is that a single param is of type String, whereas multiple params show up as a collection. As you can see from the code, I test for String and insert, otherwise I have to use an addAll method to add the collection. Does somebody know of an easier way to force single AND multiple value params into a list?

---

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[Hans Loeblich]

How about this:
capitalTypeList += params.capital_type

-Hans

----- Original Message -----
From: "mjohnsonaz74" <[hidden email]>
To: [hidden email]
Sent: Friday, January 21, 2011 2:31:22 PM GMT -06:00 US/Canada Central
Subject: [grails-user] List creation question

I created a service to return JSON to a client. The code works fine, but I'm trying to see if I can clean up some ugly code. def capitalTypeList = []
   
if (params.capital_type) {
  if (params.capital_type instanceof String) {
    capitalTypeList << params.capital_type
  } else {
    capitalTypeList.addAll(params.capital_type)
  }
} In this code chunk, I create a list into which I will insert the values returned in the named parameter. The problem I run into is that a single param is of type String, whereas multiple params show up as a collection. As you can see from the code, I test for String and insert, otherwise I have to use an addAll method to add the collection. Does somebody know of an easier way to force single AND multiple value params into a list?

View this message in context: List creation question
Sent from the Grails - user mailing list archive at Nabble.com.

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[mjohnsonaz74]

Sébastien,

Thank you!  That was exactly what I was looking for.  I was hoping there might be something simple like that available.

MJ