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Passing a java object to BIRT report [message #363491]

Wed, 25 June 2008 13:39

Eclipse User

Hello,

I am trying to pass a JAVA object as the data set to the BIRT report.I am
not sure how to go about doing this though and was hoping someone could
throw some light on this topic.

Also,I was also wondering if there is a way to make the BIRT report use
the connections from the connection pool of the J2EE application with
which it is integrated,instead of the BIRT report creating its own DB
connection.

Any help/input would be greatly appreciated.

Many thanks.

Re: Passing a java object to BIRT report [message #363494 is a reply to message #363491]

Wed, 25 June 2008 14:00

Eclipse User

Originally posted by: jasonweathersby.alltel.net

Smitha,

You can pass an object in using the application context
If you are using the report engine api just add the object
config = new EngineConfig( );
HashMap hm = config.getAppContext();
hm.put( "myobject", yourobjectinstance);

If you are using the web viewer see:
http://wiki.eclipse.org/Adding_an_Object_to_the_Application_ Context_for_the_Viewer_%28BIRT%29

For connection pooling, BIRT supports a JNDI setting for jdbc connects.

Jason

Smitha R wrote:
> Hello,
>
> I am trying to pass a JAVA object as the data set to the BIRT report.I
> am not sure how to go about doing this though and was hoping someone
> could throw some light on this topic.
>
> Also,I was also wondering if there is a way to make the BIRT report use
> the connections from the connection pool of the J2EE application with
> which it is integrated,instead of the BIRT report creating its own DB
> connection.
>
> Any help/input would be greatly appreciated.
>
> Many thanks.
>
>

Re: Passing a java object to BIRT report [message #363497 is a reply to message #363494]

Wed, 25 June 2008 14:10

Eclipse User

Thanks so much for the quick response,Jason.

Could you also please throw some light on how one could manipulate the
java object and create a report using the Report Designer?For example,how
does one create the data source and set it to a java object?

Many thanks.

Re: Passing a java object to BIRT report [message #363499 is a reply to message #363497]

Wed, 25 June 2008 15:08

Eclipse User

Originally posted by: jasonweathersby.alltel.net

Smitha,

It is difficult to run in designer. BIRT 2.3 added a feature called the
preview extension point that lets you preload an application context
object while in the designer, which should help. Take a look at the new
and notable linked on the main page. Once the object is in the
application context you can set it to a dataset by using a scripted
dataset and get a reference to your object by calling
reportContext.getAppContent("yourobjectname"). Once you have the object
you should be able to call methods on it to create your dataset. As an
example take a look at this report
http://wiki.eclipse.org/Retrieve_Session_information_in_Scri pt_%28BIRT%29
It does not use the appcontext, but gets objects from the session of the
viewer and then uses a scripted dataset to get the values for columns.

Jason

Smitha R wrote:
> Thanks so much for the quick response,Jason.
>
> Could you also please throw some light on how one could manipulate the
> java object and create a report using the Report Designer?For
> example,how does one create the data source and set it to a java object?
>
> Many thanks.
>

Re: Passing a java object to BIRT report [message #363528 is a reply to message #363494]

Thu, 26 June 2008 12:12

Eclipse User

Jason,

By JNDI setting,did you mean the setting while creating the Data Source in
the Report Designer?

When I try to enter the JNDI alone,it throws an error saying that the DB
url is required.

Many thanks.

Re: Passing a java object to BIRT report [message #363533 is a reply to message #363528]

Thu, 26 June 2008 15:42

Eclipse User

Originally posted by: jasonweathersby.alltel.net

Smitha,

The JNDI setting is in addition to a db url. It will try the JNDI
setting first and if that is unsuccessful the dburl will be used.

Jason

Smitha R wrote:
> Jason,
>
> By JNDI setting,did you mean the setting while creating the Data Source
> in the Report Designer?
>
> When I try to enter the JNDI alone,it throws an error saying that the DB
> url is required.
>
> Many thanks.
>
>
>

Re: Passing a java object to BIRT report [message #363542 is a reply to message #363491]

Thu, 26 June 2008 20:13

Eclipse User

Originally posted by: johnw.innoventsolutions.com

I wrote an article about doing something similar, serializing java
objects and passing them into reports.

http://digiassn.blogspot.com/2007/12/birt-passing-serialized -objects-as.html

John

Smitha R wrote:
> Hello,
>
> I am trying to pass a JAVA object as the data set to the BIRT report.I
> am not sure how to go about doing this though and was hoping someone
> could throw some light on this topic.
>
> Also,I was also wondering if there is a way to make the BIRT report use
> the connections from the connection pool of the J2EE application with
> which it is integrated,instead of the BIRT report creating its own DB
> connection.
>
> Any help/input would be greatly appreciated.
>
> Many thanks.
>
>

Re: Passing a java object to BIRT report [message #363552 is a reply to message #363533]

Fri, 27 June 2008 11:16

Eclipse User

Jason,sorry if it seems like I am harping on the same issue but this is
the problem that I am facing:

I have a sql query that returns say an employee id,name and
address.Instead of writing the query in the Report Designer and creating
the table,I want to pass an object say an ArrayList which contains the
records and somehow be able to populate the table.

I got how one passes the object.But after that what?I am unable to figure
out how to use the ArrayList object to create a table in a report and
populate it.

Please help!

Many thanks.

Re: Passing a java object to BIRT report [message #363555 is a reply to message #363552]

Fri, 27 June 2008 11:50

Eclipse User

Originally posted by: jasonweathersby.alltel.net

Smitha,

You can do this with a scripted dataset. Take a look at this example:
http://wiki.eclipse.org/Retrieve_Session_information_in_Scri pt_%28BIRT%29

Jason

Smitha R wrote:
> Jason,sorry if it seems like I am harping on the same issue but this is
> the problem that I am facing:
>
> I have a sql query that returns say an employee id,name and
> address.Instead of writing the query in the Report Designer and creating
> the table,I want to pass an object say an ArrayList which contains the
> records and somehow be able to populate the table.
>
> I got how one passes the object.But after that what?I am unable to
> figure out how to use the ArrayList object to create a table in a report
> and populate it.
>
> Please help!
>
> Many thanks.
>
>
>

Re: Passing a java object to BIRT report [message #363557 is a reply to message #363555]

Fri, 27 June 2008 12:36

Eclipse User

Jason,

I am afraid I don't quite understand fully well.

I saw the report that was attached with the example and all the scripting
code that was mentioned on the website was included in the XML source of
the report.

So if I have to pass my JAVA object,then I have to create a report with a
Scripted Data Source and then add similar code as the example in the XML
source of this report?

I would really appreciate your help though my query may sound trivial.

Many thanks.

Re: Passing a java object to BIRT report [message #363558 is a reply to message #363557]

Fri, 27 June 2008 13:13

Eclipse User

Originally posted by: jasonweathersby.alltel.net

You can call a pojo in many places in birt to get a value, but if you
want to do all the formatting etc with a table it needs to be bound to a
data set. In the example I posted you will see that the java objects
are in session and in the before factory event theses objects are loaded
into maps. The maps are then iterated over in a scripted dataset. The
xml for the report was not modified directly. The script tab was used
to create it.

Jason

Smitha R wrote:
> Jason,
>
> I am afraid I don't quite understand fully well.
>
> I saw the report that was attached with the example and all the
> scripting code that was mentioned on the website was included in the XML
> source of the report.
>
> So if I have to pass my JAVA object,then I have to create a report with
> a Scripted Data Source and then add similar code as the example in the
> XML source of this report?
>
> I would really appreciate your help though my query may sound trivial.
>
> Many thanks.
>
>
>

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