Compatibility

[wodarski]

Hello folks,

 

I use JasperReports 0.6.7 and I would like upgrade it to the newest version.

 

I tried just change jasperreports.jar file (and its dependencies) in my application classpath, without recompiling my reports, and I got this exception:

 

Code:

java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 607, local class serialVersionUID = 10200
	at java.io.ObjectStreamClass.initNonProxy(Ljava/io/ObjectStreamClass;Ljava/lang/Class;Ljava/lang/ClassNotFoundException;Ljava/io/ObjectStreamClass;«»)V(Unknown Source)
	at java.io.ObjectInputStream.readNonProxyDesc(Z)Ljava/io/ObjectStreamClass;(Unknown Source)
	at java.io.ObjectInputStream.readClassDesc(Z)Ljava/io/ObjectStreamClass;(Unknown Source)
	at java.io.ObjectInputStream.readNonProxyDesc(Z)Ljava/io/ObjectStreamClass;(Unknown Source)
	at java.io.ObjectInputStream.readClassDesc(Z)Ljava/io/ObjectStreamClass;(Unknown Source)
	at java.io.ObjectInputStream.readOrdinaryObject(Z)Ljava/lang/Object;(Unknown Source)
	at java.io.ObjectInputStream.readObject0(Z)Ljava/lang/Object;(Unknown Source)
	at java.io.ObjectInputStream.readObject()Ljava/lang/Object;(Unknown Source)
	at net.sf.jasperreports.engine.util.JRLoader.loadObject(Ljava/io/InputStream;«»)Ljava/lang/Object;(JRLoader.java:192)
	at net.sf.jasperreports.engine.JasperFillManager.fillReport(Ljava/io/InputStream;Ljava/util/Map;Lnet/sf/jasperreports/engine/JRDataSource;«»)Lnet/sf/jasperreports/engine/JasperPrint;(JasperFillManager.java:580)
...
...
...

 

When I recompile my reports they work fine.

 

So, do I really need to recompile all my reports? Are the newer JasperReports version not compatible with the older ones?

 

Thanks,

Mauricio