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user properties quick question [message #468250]

Tue, 04 August 2009 13:28

Eclipse User

We have designed our web GUI to ask the engine what the parameters are for
the report and then display those parameters to the user. In one case, I
want the report writer to be able to add a property to the toDate report
parameter of maxRange so that the report write can define the max amount
between fromDate and toDate...some of our reports can only be run for a 24
hour period and some have a maximum of one month.

I click toDate report param and go to User Properties tab and click add
and it only asks me for the name and type of the property but I want to
enter a value as well like 1 day or 31 days, etc. How do I do this? Is
this even possible?

I have been thinking of overriding Help Text to do this, but obviously I
would rather have our engine suck Help Text into the help of each field.

thanks,
Dean

more info... [message #468257 is a reply to message #468250]

Tue, 04 August 2009 13:55

Eclipse User

Well, I added a NamedExpression which seems to show up in the properties.
Here is the weird part though. In debug mode, inside
IScalarParameterDefn, I see a customProperties Map which contains my
NamedExpression of value '1'. I then call getUserPropertyValues() and it
returns a null Map. I call getUserPropertyValue('maxRange') and it
returns null....it is like I have no access to this customProperties
map????? Not sure what getUserPropertyValues is for now.....quite
weird....anyone have any ideas?
thanks,
Dean

work around for other people [message #468275 is a reply to message #468257]

Tue, 04 August 2009 15:41

Eclipse User

well, here is a hack workaround(BIRT 2.3.2) for people to access
NamedExpression(just use these as the properties since you can set values
on them)....then add this method to access the properties Map so you can
get your properties in your web application from the report parameters....

//contains all the metadata to render report correctly...
//This is the report parameter retrieved from the report.
private ScalarParameterDefn metaData;

and the code to access the customProperties out of that variable
is(basically how you access a private field in java)......

public Map getUserProperties() {
Class<ParameterDefnBase> c = ParameterDefnBase.class;
Field field;
try {
Field[] declaredFields = c.getDeclaredFields();
field = c.getDeclaredField("customProperties");
field.setAccessible(true);
Map map = (Map)field.get(metaData);
return map;
} catch (Exception e) {
throw new RuntimeException("exception", e);
}
}

I hope this helps someone.
later,
Dean

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