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From Jan Matèrne (jhm) <apa...@materne.de>
Subject AW: Script task specification
Date Tue, 29 Oct 2019 08:51:10 GMT
The AntXMLContext stores the id-object pair in the project instance via 
    public void configureId(Object element, Attributes attr) {
        String id = attr.getValue("id");
        if (id != null) {
            project.addIdReference(id, element);
        }
    }

In the Projct class this is stored in a HashMap

    /** Map of id references - used for indicating broken build files */
    private final HashMap<String, Object> idReferences = new HashMap<>();

    public void addIdReference(final String id, final Object value) {
        idReferences.put(id, value);
    }

But I haven't found a place where this private field is read...


Jan



> -----Ursprüngliche Nachricht-----
> Von: Jan Matèrne (jhm) [mailto:apache@materne.de]
> Gesendet: Dienstag, 29. Oktober 2019 08:48
> An: 'Ant Developers List'
> Betreff: AW: Script task specification
> 
> I placed some system-outs in the parsing code.
> The parsing is done by ProjectHelper2. Id is stored via AntXMLContext to
> the "UnknownElement".
> 
> C:\projekte\apache-ant-svn\sandbox\script>ant
> Buildfile: C:\projekte\apache-ant-svn\sandbox\script\build.xml
> PH2.ElemeentHandler.onStartElement  tag=echo  taskname=echo
> AntXMLContext.configureId
> element=org.apache.tools.ant.UnknownElement@1f89ab83  id=foo
> PH2.ElemeentHandler.onStartElement  tag=script  taskname=script
> AntXMLContext.configureId
> element=org.apache.tools.ant.UnknownElement@383534aa  id=null
> 
> 
> main:
>    [script] PH2.ElemeentHandler.onStartElement  tag=antlib
> taskname=antlib
>    [script] AntXMLContext.configureId
> element=org.apache.tools.ant.UnknownElement@50cbc42f  id=null
>    [script] PH2.ElemeentHandler.onStartElement  tag=componentdef
> taskname=componentdef
>             ... more element definitions ...
> 
> BUILD FAILED
> C:\projekte\apache-ant-svn\sandbox\script\build.xml:9:
> org.mozilla.javascript.EcmaError: ReferenceError: "foo" is not defined.
> 
> 
> 
> Jan
> 
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Jan Matèrne (jhm) [mailto:apache@materne.de]
> > Gesendet: Dienstag, 29. Oktober 2019 08:03
> > An: 'Ant Developers List'
> > Betreff: AW: Script task specification
> >
> > It seems that the task must be executed before.
> > If you add a >depends="sub"< on the main target, that works.
> >
> > So the question is: when are id's stored?
> > The parsing is done via ProjectHelper's and their SAX-Parser-Handlers.
> > On the first view I would say, that the id is stored while parsing -
> > so before exucution.
> >
> >
> > Jan
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: Gintautas Grigelionis [mailto:g.grigelionis@gmail.com]
> > > Gesendet: Montag, 28. Oktober 2019 14:25
> > > An: Ant Developers List
> > > Betreff: Script task specification
> > >
> > > The documentation of the script task states:
> > >
> > > "All items (tasks, targets, etc) of the running project are
> > > accessible from the script, using either their name or id attributes
> > > (as long as their names are considered valid Java identifiers, that
> is). "
> > >
> > > However, the following fails:
> > >
> > > <?xml version="1.0"?>
> > > <project name="test" default="main" basedir=".">
> > >   <target name="sub">
> > >     <echo id="foo">Executing a task</echo>
> > >   </target>
> > >
> > >   <!-- tests the script stuff -->
> > >   <target name="main">
> > >     <script language="javascript"><![CDATA[
> > >         foo.setMessage("I'm a foo!")
> > >         sub.execute()
> > >     ]]></script>
> > >   </target>
> > > </project>
> > >
> > > Surely there are more limitations? Besides, failure modes are
> > > different in Rhino (unable to create engine) and Nashorn (reference
> > not defined).
> > >
> > > Regards,
> > > Gintas
> >
> >
> > ---------------------------------------------------------------------
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> > commands, e-mail: dev-help@ant.apache.org
> 
> 
> 
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