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Re: Request for feedback on proposed project
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Re: Request for feedback on proposed project


  • Subject: Re: Request for feedback on proposed project
  • From: Chuck Hill <email@hidden>
  • Date: Tue, 6 Dec 2005 10:04:19 -0800


On Dec 6, 2005, at 9:44 AM, Robert Walker wrote:

Is there anyway to write some sort of plug-in for JasperReports to get it to play more nicely? Are there nice reporting tools for Hibernate that may have a better impedance match to EOF?

It appears to me from gleaning the JasperReports API that this work has already been done. There are multiple subclasses of JRDataSource that provide access to Java collections, array maps, and XML data sources.


Give it a closer look and see if there isn't some way to integrate reasonably well with JasperReports, Seems to me the XML data source option might be doable with less work than you're proposing. Plus this way you can take advantage of the JasperReport GUI design tools.

A couple of additional thoughts. I am working on a project where we are looking at using JasperReports with a subclass of JRDataSource to map to an NSArray of EOs. I am not sure we will go that way or not. Operations reporting usually pulls a lot of summarized data and EOF is often not an efficient access path for the data needs of such reports.

Chuck

On Dec 6, 2005, at 12:28 PM, Arturo Perez wrote:

Jarvis Cochrane wrote:
Hi everyone,
I've been reading some of the posts on this list about generating PDFs and reports from WebObjects, and also getting really frustrated with the "impedance match" between EO and something like JasperReports (which seems to expect people to write sql queries to extract data).
What I'm thinking of doing for the couple of projects I'm working on, and for anyone else who wants to use it, is writing some kind of reporting framework/subsystem that integrates well with collections of data objects.
My first-cut vague design would require objects that may be included in a report to be JavaBeans (use getXX and setXX), and to implement a simple interface (maybe 2 methods?). The report design would be in XML, which the reporting engine would use to query the collection of data objects and construct an intermediate representation (an in- memory DOM tree?) which could then be transformed to one of a number of output formats using XSL or FO or what have you.

There's a high probability that something like that would be unusably slow. Reports tend to require lots of data etc.


Is there anyway to write some sort of plug-in for JasperReports to get it to play more nicely? Are there nice reporting tools for Hibernate that may have a better impedance match to EOF?

-arturo
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References: 
 >Request for feedback on proposed project (From: Jarvis Cochrane <email@hidden>)
 >Re: Request for feedback on proposed project (From: Arturo Perez <email@hidden>)
 >Re: Request for feedback on proposed project (From: Robert Walker <email@hidden>)

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