Re: PageParameters in 1.5: a sanity check request

[Matthias Keller]

Hi

And you can even leave away the

if(params.getNamedKeys().contains("parameter_name"))

and just do:

StringValue param = params.get("param"); // or use an index if you wish
if (!param.isEmpty()) {
    ... param.toString() ...
}

Matt

On 2011-11-23 12:17, vineet semwal wrote:

List<StringValue>  liSVs = params.getValues([Param name]);
  if ((liSVs != null)&&  !liSVs.isEmpty())
  {
    StringValue svValue = liSVs.get(0);
    String sValue = svValue.toOptionalString();
    ...
  }

  you can just do
  if(params.getNamedKeys().contains("parameter_name"))
{
  String svValue  =  params.get(parameter_name)
   String sValue  = svValue.toOptionalString();
  if(!Strings.isEmpty(sValue)){
--your code--
}
}

On Wed, Nov 23, 2011 at 4:06 PM, Ian Marshall<ianmarshall...@gmail.com>  wrote:

I have ported my app from 1.4.18 to 1.5.1 (I haven't used 1.5.3 yet).

As part of my porting, I had to adjust the use of page parameters. I would
like to mention my changes for parameter extraction and existence
determination below, in case someone can mention a cleaner way to do these
things...

  import org.apache.wicket.util.string.StringValue;

Replace

  if (params.containsKey([Param name]))
  {
    String sValue = params.getString([Param name]);
    ...
  }

with

  List<StringValue>  liSVs = params.getValues([Param name]);
  if ((liSVs != null)&&  !liSVs.isEmpty())
  {
    StringValue svValue = liSVs.get(0);
    String sValue = svValue.toOptionalString();
    ...
  }

and replace

  String sUserName = params.getString([Key name], [Empty default string]);
  if (!sUserName.isEmpty())
    ...

with

  List<StringValue>  liSVs = params.getValues([Param name]);
  if ((liSVs != null)&&  !liSVs.isEmpty())
    ...

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