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From Prasanth <dbad...@pangburngroup.com>
Subject Re: Map backed form
Date Mon, 18 Feb 2019 16:03:03 GMT
Thank you Yasser. I will try that.


On 2/16/19 3:20 AM, Yasser Zamani wrote:
> I think a file named yourActionClass-conversion.properties beside your action with following
contents should help [1]:
>
> Key_xxx=java.lang.Long
> Element_xxx=java.lang.Double
>
> (where xxx is the field name of the collection property in your action or object)
>
> Regards.
>
> [1] https://struts.apache.org/core-developers/type-conversion.html#collection-and-map-support
>
>> -----Original Message-----
>> From: Prasanth <dbadmin@pangburngroup.com>
>> Sent: Friday, February 15, 2019 9:08 PM
>> To: user@struts.apache.org
>> Subject: Re: Map backed form
>>
>> Does struts follow a specific logic as to what the data type of the object would
be
>> based on user input? Meaning when is it converted to a Double vs Integer vs
>> String?
>>
>> Thanks,
>> Prasanth
>>
>> On 2/15/19 7:45 AM, Lukasz Lenart wrote:
>>> pt., 15 lut 2019 o 00:17 Prasanth <dbadmin@pangburngroup.com> napisaƂ(a):
>>>> I have a map (Map<Long, Double>) but based on the data entered by the
>>>> user the value in the Map is Double or String. Example if the user enters
a
>> value of 10 then it is coming in as double but if the user enters 10.5 then a string
>> is present in the value. Does Struts2 look at the data types of the key and value
of
>> the map and set the key and values in the map accordingly?
>>> Struts is not a problem here, generic types are erased at runtime, so
>>> basically this a Map<Object, Object> at the end
>>> https://docs.oracle.com/javase/tutorial/java/generics/erasure.html
>>>
>>>> If not, what is the best practice for the declaration of Map, is there a
way to
>> force Struts2 to only have Double objects as values?
>>> I would probably use a custom type instead of Double and implement
>>> converter for it, or even replace the Map with a List of custom
>>> objects.
>>>
>>>
>>> Regards
>
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