JasperReports redesign

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There are some things one could improve when looking at the integration of JasperReports into ADempiere:

  • Loading of resources with any filename
up to now subreports need a filename with a special convention and other files (images, fonts) can not be loaded. Subreports can not use any resources.
  • keep (and extend) the use of different protocols in the file URL (and keep this when loading sub-resources)
  • automatic creation and caching of.jasper files from .jrxml files
  • caching possible for more than one user per system
  • clean cache when original may have changed
  • Make it possible to overload a resource in a user directory
  • define (and document) which parameters were set automatic
  • keep this all compatible with legacy installations (old behaviour as a special case)
  • allow to compile the report on the fly (with caching, if possible) to avoid problems with different JasperReport versions (newer iReport version)

I would like to have a user-editable "overloading" mechanism so that all reports (from the different protocol's sources) may be (when configured so) saved to the user's file system and be changed by him. With such a mechanism we give the user the opportunity to do small changes for himself and give the developer a facility for rapid development.


Contents

Parameters

I made a list which parameter are defined to use in your report. See http://www.adempiere.com/JasperReports_Tips_und_Tricks#Parameter_in_Reporten

I added some parameters with my patch at http://www.adempiere.com/JasperReports_with_Window_Sql-Clauses

Which parameters are needed in a perfect world?


documentation about the current state

... all these documents do not deal with internals like using the different protocols, loading reports from attachments, which parameters are used, etc.!

  • [JasperReports Integration HowTo] - Here someone seems to have improved the class to a JasperStarter2. I could not find the source (yet) or whether some of it is included already

my own pages:

Which protocols for which reason?

This may became a hintful description of all protocols with usecases:

attachment:

<trifon> is the most flexible for me.
<trifon> i do not need to re-start adempiere server and every admin can upload new version of report.

similar issues

interesting links while researching this issue

Einführung in die Benutzung von URLHandlern: http://java.sun.com/developer/onlineTraining/protocolhandlers/

Forumsthread mit gutem Beispiel zur Benutzung von URLHandler und ClassLoader mit JasperReports: http://jasperforge.org/plugins/espforum/view.php?group_id=102&forumid=103&topicid=17884

In JRResourcesUtil werden Handler und Loader gesetzt. http://jasperreports.sourceforge.net/api/net/sf/jasperreports/engine/util/JRResourcesUtil.html

Google gibt mir einen Link zum "Definitive Guide": http://www.google.com/m/search?client=ms-nokia-maemo&channel=unibox&q=jasperreports+urlhandlerfactory

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