Re: [dali-dev] Policy on Java compliance

[Paul Fullbright <paul.fullbright@xxxxxxxxxx>]

I believe it's because of the Writer/PrintWriter hierarchy.

In the 1.5 jdk, we have:

java.io.Writer
Writer append(...)

java.io.PrintWriter
PrintWriter append(...)

and in 1.4, it doesn't look like those methods exist.

Not sure exactly how you can have 1.4 compliant code using the 1.5 
version of the jdk, since the method return type override seems to break 
compliance.  Of course, why IndentingPrintWriter doesn't complain, I 
don't know.  Perhaps it's because the 1.4-compliant eclipse 1.5 compiler 
doesn't compile IndentingPrintWriter correctly, although having 
EntitySourceWriter extend PrintWriter directly doesn't solve the compile 
problem.  The other explanation is the nested class nature of 
EntitySourceWriter, but I have no idea why that would do anything here.

-pwf


Max Rydahl Andersen wrote:
> It is weird.
>
> using jdk 1.4.2_08 for build path no errors
> using jdk 1.5.0_05 for build path I get the errors.
>
> /max
>
> > Brian,
> >
> > I am also seeing this, and Max and Shaun were both having the problem 
> > as well.  Not sure what is going on though.  Very strange.  Karen 
> > does not have the problem, but we are both using the same Eclipse build.
> >
> > Neil
> >
> > -----Original Message-----
> > > From Markus Kuppe <mkuppe@xxxxxxxxxxx>
> > Sent Thu 3/23/2006 2:48 PM
> > To General Dali EJB ORM developer discussion. <dali-dev@xxxxxxxxxxx>
> > Subject Re: [dali-dev] Policy on Java compliance
> >
> > Brian Vosburgh wrote:
> > >   Markus, I don't see any compile problems with
> > > EntityGenerator.EntitySourceWriter. I can compile all the plug-ins with
> > > a compiler compliance level of 1.4 without any problems. Also, AFAIK,
> > > the Eclipse platform plans on shipping 3.2 with Java 1.4 compliance.
> > > What problems are you encountering?
> > >
> > >
> > > Markus Kuppe wrote:
> > > > Hi,
> > > >
> > > > whats our policy on Java code compliance?
> > > > EntityGenerator.EntitySourceWriter seems to rely on Java 5. So are we
> > > > going for Java 5 now?
> >
> > Hi,
> >
> > I get following errors with code compliance and source/class
> > compatibility set to 1.4. Changing the workspace compliance to 1.5 fixed
> > the compile problem so I figured its related to Java 5.
> >
> > - Error    org.eclipse.dali.ui/source/org/eclipse/dali/ui/actions
> > EntityGenerator.java    The return type is incompatible with
> > Writer.append(char), PrintWriter.append(char)    line 753
> > - Error    org.eclipse.dali.ui/source/org/eclipse/dali/ui/actions
> > EntityGenerator.java    The return type is incompatible with
> > Writer.append(CharSequence, int, int), PrintWriter.append(CharSequence,
> > int, int)    line 753
> > - Error    org.eclipse.dali.ui/source/org/eclipse/dali/ui/actions
> > EntityGenerator.java    The return type is incompatible with
> > Writer.append(CharSequence), PrintWriter.append(CharSequence)    line 
> > 753   
>
>
>
> ----
> Max Rydahl Andersen
> callto://max.rydahl.andersen
>
> Hibernate
> max@xxxxxxxxxxxxx
> http://hibernate.org
>
> JBoss Inc
> max.andersen@xxxxxxxxx
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