Pass multiple parameters

[malliboy]

To pass parameters, I can do the following.

Map parameters = new HashMap();
parameters.put("imageDir", imageDir);

What if I wanted to pass 100 strings? Do I need to write 100 statements like the one above? Or can I pass them as a list or something? If so, how do I access it from my jrxml?

Thanks,

Malliboy.

 

[dayana]

hi ,

 

you can pass the list from java to jrxml, create a parameter of type java.util.Collection or java.util.List in the jrxml.....

[jpp74]

You can put a List object in your parameter map. Then you have just to declare a parameter like this in your jrxml file:
<parameter name="imageDir" isForPrompting="false" class="java.util.List"/>

To use it in an expression you can write for example:
$P{imageDir}.get(0)

[malliboy]

Thanks a ton for that. :)

[malliboy]

If you use a List or a Collection, we can refer it only by the index. I was looking for a key-value pair. Yes, adding them to the 'parameters' hashmap serves the purpose, but again, if I need to pass 100 strings, I need to explicitly include the parameters in the jrxml. I was looking for a solution and found one - Another hashmap within 'parameters'.

HashMap myMap = new HashMap();
myMap.put("1", "A");
myMap.put("2", "B");
myMap.put("3", "C");

Map parameters = new HashMap();
parameters.put("myMap", myMap);

In the jrxml, fetch values using '$P{myMap}.get("1")'. The advantage is that we don't to specify A, B and C in the parameter section of the jrxml. Looks like anything - Tree, Map can be used. Hope that helped. :)

 

 

 

[ranjeet143]

Hello. Could you please guide me, how to access java list ,passed to ireport in a hashmap, objects's attributes.

Regards,

Ranjet