Check if Map contains an array as an entry value

[Lucky J Verma]

Hi all


I have a Map which is dynamically generated and can contain strings, and array of strings as values.
keys are strings.
if i do map.get('key') where 'key' has a string value -it returns s tring value which is good.
but if 'key' has an array stored inside map as value , it returns first element of array.

I can use getArray() but in that case i should know if 'key' is an array or not and that is not possible.
so i want to check if map contains an array .

I want to do something like this-
map.get("key").getClass().isArray()
Ofcouse I tried this and it wont work because getClass() checks first element of Array.

[Paul Clapham]

Lucky J Verma wrote:I have a Map which is dynamically generated and can contain strings, and array of strings as values.
keys are strings.
if i do map.get('key') where 'key' has a string value -it returns s tring value which is good.
but if 'key' has an array stored inside map as value , it returns first element of array.

Not if it's a java.util.Map, it doesn't.

I can use getArray() but in that case i should know if 'key' is an array or not and that is not possible.
so i want to check if map contains an array .

No, java.util.Map doesn't have a getArray() method. Perhaps your "Map" is some other class? If so then you should tell us what it is, otherwise it's impossible to answer questions about it.

[Lucky J Verma]

It is actually an ParameterMap from spring-webflow.jar.


http://static.springsource.org/spring-webflow/docs/1.0.x/api/org/springframework/webflow/core/collection/ParameterMap.html