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RE: [Smartfrog-developer] Problem in the function resolution phase
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From: Goldsack, P. <pat...@hp...> - 2005-11-09 09:14:17
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Its not in the Prim interface as it is not one of the remotable methods =
- but I assure you that it is there in the class.
When a component is created, and local to this, the deployer calls the =
default constructor for the component class, then call the sfDeployWith =
method passing all the data that is required to construct the component =
(parent and description). After that, the deployer returns the component =
handle to the requestor.
As for the reference manual, I am currently (slowly) working on a =
revised version - it is in the CVS - with a large amount of new =
introductory "how to use" material. But this is still only partially =
done. The previsouly existing content is there, but somewhat =
restructured.
Patrick
-----Original Message-----
From: Gustavo Wagner D Mendes / Pos. COPIN =
[mailto:gu...@ds...]=20
Sent: 08 November 2005 20:17
To: Goldsack, Patrick; sma...@li...
Cc: aan...@ds...
Subject: RE: [Smartfrog-developer] Problem in the function resolution =
phase
Hello Patrick.
Thanks for the points. But we still have doubt about the sfDeployWith =
method.
where is the public void sfDeployWith(Prim parent, ComponentDescritpion =
Cd) method? We haven't found it in the Compound and Prim interfaces.
Another doubt. Is there a new version of the SmartFlow document? I have =
the
2003-2004 draft.
Cheers,
Gustavo
On Mon, 7 Nov 2005 15:51:41 -0000, Goldsack, Patrick wrote
> A number of points.
>=20
> 1) The phase list should read "type, place, sfconfig (sfConfig?),=20
> link, function". In this way, you don't link and apply functions to=20
> anything other than sfConfig.
>=20
> 2) If you want to keep a copy of the component description, overwrite =
> the definition of sfDeployWith(ComponentDescritpion) and define it to=20
> be the following:
>=20
> ComponentDescription myCd;
> public void sfDeployWith(Prim parent, ComponentDescritpion Cd)
> throws ... { myCd =3D cd.copy(); // must copy, as original gets =
> changed by side-effect during deployment super(parent, cd); }
>=20
> Hopes this helps,
>=20
> Patrick
>=20
> -----Original Message-----
> From: sma...@li...
> [mailto:sma...@li...] On Behalf Of=20
> Gustavo Wagner D Mendes / Pos. COPIN Sent: 07 November 2005 15:10
> To: Goldsack, Patrick; sma...@li... Cc:=20
> aan...@ds... Subject: RE: [Smartfrog-developer] Problem in =
> the function resolution phase
>=20
> Hello Patrick. How are you?
>=20
> I have faced this problem when I have tried to parse a component to=20
> get its ComponentDescription. I do not know another way to get the=20
> ComponentDescription after the component is running. So, as I need the =
> ComponentDescription to redeploy a component on a remote
> machine, I have developed the util paserDescription method below:=09
>=20
> public static ComponentDescription parseDescription (InputStream
> stream) throws RemoteException, SmartFrogException,
> FileNotFoundException { Phases phases =3D new SFParser()
> .sfParse(stream);
> =09
> /* Resolving the phases. We don't resolve the 'sfConfig' phase =
because
> * it isn't a deployable component.
> */=20
> phases.sfResolvePhase("type");
> phases.sfResolvePhase("place");
> phases.sfResolvePhase("link");
> phases.sfResolvePhase("function");
> =09
> return phases.sfAsComponentDescription(); =09
> }=09
>=20
> To test it, I have developed a simple component to be parsed:
>=20
> #include "org/smartfrog/components.sf"
> #include "org/smartfrog/functions.sf"
>=20
> Teste1 extends {
> sfClass "org.ourgrid.serviceprofile.teste.TesteImpl";
> }
>=20
> sfConfig extends Compound {
> teste1 extends Teste1;
> }
>=20
> I have noticed that the problem is the inclusion of the functions.sf=20
> file. Even if you don't use any function in the function.sf file, the =
> problem will occur.
>=20
> Am I right?
>=20
> Cheers,
>=20
> Gustavo
>=20
> ps.: The stacktrace of the error is below:
>=20
> SmartFrogCompileResolutionException:: java.lang.NullPointerException,
> resolutionPhase: function
> at
>
org.smartfrog.sfcore.languages.sf.SmartFrogCompileResolutionException.for=
ward(SmartFrogCompileResolutionException.java:294)
at
org.smartfrog.sfcore.languages.sf.sfcomponentdescription.SFComponentDescr=
iptionImpl.sfResolvePhases(SFComponentDescriptionImpl.java:662)
at
org.smartfrog.sfcore.languages.sf.sfcomponentdescription.SFComponentDescr=
iptionImpl.sfResolvePhase(SFComponentDescriptionImpl.java:621)
at org.ourgrid.serviceprofile.util.Util.parseDescription(Util.java:328) =
at
org.ourgrid.serviceprofile.util.UtilTest.testGetUndoComponent(UtilTest.ja=
va:254)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
junit.framework.TestCase.runTest(TestCase.java:154) at
junit.framework.TestCase.runBare(TestCase.java:127) at
junit.framework.TestResult$1.protect(TestResult.java:106) at
junit.framework.TestResult.runProtected(TestResult.java:124) at
junit.framework.TestResult.run(TestResult.java:109) at
junit.framework.TestCase.run(TestCase.java:118) at
junit.framework.TestSuite.runTest(TestSuite.java:208) at
junit.framework.TestSuite.run(TestSuite.java:203) at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTes=
tRunner.java:478)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunn=
er.java:344)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRun=
ner.java:196)
Caused by: java.lang.NullPointerException at =
java.util.Hashtable.put(Unknown
Source) at
org.smartfrog.sfcore.common.OrderedHashtable.primPut(OrderedHashtable.jav=
a:170)
at
org.smartfrog.sfcore.common.OrderedHashtable.put(OrderedHashtable.java:18=
2)
at
org.smartfrog.sfcore.languages.sf.functions.BaseFunction.doit(BaseFunctio=
n.java:63)
at org.smartfrog.sfcore.languages.sf.Phase.actOn(Phase.java:97) at
org.smartfrog.sfcore.componentdescription.ComponentDescriptionImpl.visit(=
ComponentDescriptionImpl.java:604)
at
org.smartfrog.sfcore.componentdescription.ComponentDescriptionImpl.visit(=
ComponentDescriptionImpl.java:599)
at
org.smartfrog.sfcore.languages.sf.sfcomponentdescription.SFComponentDescr=
iptionImpl.sfResolvePhases(SFComponentDescriptionImpl.java:659)
... 18 more
>=20
> On Thu, 3 Nov 2005 22:17:55 -0000, Goldsack, Patrick wrote
> > Gustavo,
> >=20
> > Thanks for pointing this out. I wonder how this slipped through - it =
> > must have been sitting there for ages without anyone noticing. The=20
> > correct function for adding its attributes is sum, not plus. The=20
> > definition of plus should probably be removed, or made to point to=20
> > the class Sum for possible backward compatability. I will consider=20
> > this and fix...
> >=20
> > I am somewhat surprised that unless you actually try to use it you=20
> > get an error (or if you try to include the file directly into =
sfConfig).
> > Only the functions used within sfConfig should be evaulated, so a=20
> > file included at the top level will be ignored.
> >=20
> > Eliminating the function phase enirely will of course remove the=20
> > problem, but I wouldn't recommend it!
> >=20
> > Can you send me some more details as to why you are getting the=20
> > error message? The file you are parsing would do.
> >=20
> > Thanks
> > Patrick
> >=20
> > -----Original Message-----
> > From: sma...@li...
> > [mailto:sma...@li...] On Behalf=20
> > Of Gustavo Wagner D Mendes / Pos. COPIN Sent: 03 November 2005 21:49
> > To: sma...@li... Subject: [Smartfrog-=20
> > developer] Problem in the function resolution phase
> >=20
> > Hello all.
> >=20
> > In the org/smartfrog/functions.sf file there is the following =
component:
> >=20
> > plus extends {
> > phase.function
> > "org.smartfrog.sfcore.languages.sf.functions.Plus"; }
> >=20
> > Note that it links to the
> > org/smartfrog/sfcore/languages/sf/functions/Plus.class class, but it =
> > does not exists in any smartfrog distribution. If we try to parse=20
> > any component, in the function phase occurs a =
ClassNotFoundException.
> >=20
> > When I comment the function phase -
> > //phases.sfResolvePhase("function");, it works well.
> >=20
> > If you dont have the Plus class, I can do it and send to you.
> >=20
> > Cheers,
> >=20
> > Gustavo
> >=20
> > #############################################
> > # GUSTAVO WAGNER DINIZ MENDES #
> > # Graduado pela UFCG #
> > # Curso: Ci=EAncia da Computa=E7=E3o #
> > # Mestrando pela COPIN-UFCG #
> > # * Integrante do projeto OurGrid #
> > # Fones: (83)88246910 / 32358355 #
> > # 33333453 #
> >=20
> > -------------------------------------------------------
> > SF.Net email is sponsored by:
> > Tame your development challenges with Apache's Geronimo App Server.=20
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> http://sourceforge.net/geronimo.php
> > _______________________________________________
> > Smartfrog-developer mailing list
> > Sma...@li...
> > https://lists.sourceforge.net/lists/listinfo/smartfrog-developer
> >=20
> > -------------------------------------------------------
> > SF.Net email is sponsored by:
> > Tame your development challenges with Apache's Geronimo App Server.=20
> > Download it for free - -and be entered to win a 42" plasma tv or=20
> > your very own Sony(tm)PSP. Click here to play:
> > http://sourceforge.net/geronimo.php
> > _______________________________________________
> > Smartfrog-developer mailing list
> > Sma...@li...
> > https://lists.sourceforge.net/lists/listinfo/smartfrog-developer
>=20
> #############################################
> # GUSTAVO WAGNER DINIZ MENDES #
> # Graduado pela UFCG #
> # Curso: Ci=EAncia da Computa=E7=E3o #
> # Mestrando pela COPIN-UFCG #
> # * Integrante do projeto OurGrid #
> # Fones: (83)88246910 / 32358355 #
> # 33333453 #
>=20
> -------------------------------------------------------
> SF.Net email is sponsored by:
> Tame your development challenges with Apache's Geronimo App Server.=20
> Download it for free - -and be entered to win a 42" plasma tv or your=20
> very own Sony(tm)PSP. Click here to play:
http://sourceforge.net/geronimo.php
> _______________________________________________
> Smartfrog-developer mailing list
> Sma...@li...
> https://lists.sourceforge.net/lists/listinfo/smartfrog-developer
>=20
> -------------------------------------------------------
> SF.Net email is sponsored by:
> Tame your development challenges with Apache's Geronimo App Server.=20
> Download it for free - -and be entered to win a 42" plasma tv or your=20
> very own Sony(tm)PSP. Click here to play:=20
> http://sourceforge.net/geronimo.php
> _______________________________________________
> Smartfrog-developer mailing list
> Sma...@li...
> https://lists.sourceforge.net/lists/listinfo/smartfrog-developer
#############################################
# GUSTAVO WAGNER DINIZ MENDES #
# Graduado pela UFCG #
# Curso: Ci=EAncia da Computa=E7=E3o #
# Mestrando pela COPIN-UFCG #
# * Integrante do projeto OurGrid #
# Fones: (83)88246910 / 32358355 #
# 33333453 #
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