Schema aware processing

[Norman Walsh]

IIRC, in Saxon 9.1

  Processor p = new Processor(true)

returned either a schema-aware processor or threw an exception.

In Saxon 9.2,

  Processor p = new Processor(true)

returns...well, I'm not really sure. Apparently it looks for the license
file and returns either a licensed configuration or an unlicensed one.

How can I tell if it found a license?

How can I tell it I want a schema-aware processor?

                                        Be seeing you,
                                          norm

--
Norman Walsh <ndw@...> | There is no such thing as an absolute
http://nwalsh.com/            | certainty, but there is assurance
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[Norman Walsh]

Norman Walsh <ndw@...> writes:
> How can I tell if it found a license?

Configuration.displayLicenseMessage:

public void displayLicenseMessage() {
}

Is that right?

                                        Be seeing you,
                                          norm

--
Norman Walsh <ndw@...> | The greatest mystery is not that we
http://nwalsh.com/            | have been flung at random between the
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                              | but that within this prison we can draw
                              | from ourselves images powerful enough
                              | to deny our nothingness.--Andre Malraux


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[Michael Kay]

In 9.2, new Processor(true) will give you the most capable processor it can
create for you, and you can then determine what you have been given by
looking at its properties (if necessary, dropping down to the underlying
Configuration). One of the properties is given by Processor.isSchemaAware(),
which tells you whether the processor has the capability to load schemas and
run schema-aware stylesheets and queries. This property will be true only if
you are running Saxon-EE and a valid license is installed.

In 9.2 however, schema-awareness is best regarded not so much a property of
a configuration, as of an individual stylesheet or query. So when you're
using Saxon-EE, some queries/transforms might be schema-aware while others
running within the same configuration are not.

Michael Kay
Saxonica

> -----Original Message-----
> From: Norman Walsh [mailto:ndw@...]
> Sent: 03 November 2009 18:17
> To: saxon-help@...
> Subject: [saxon] Schema aware processing
>
> IIRC, in Saxon 9.1
>
>   Processor p = new Processor(true)
>
> returned either a schema-aware processor or threw an exception.
>
> In Saxon 9.2,
>
>   Processor p = new Processor(true)
>
> returns...well, I'm not really sure. Apparently it looks for
> the license file and returns either a licensed configuration
> or an unlicensed one.
>
> How can I tell if it found a license?
>
> How can I tell it I want a schema-aware processor?
>
>                                         Be seeing you,
>                                           norm
>
> --
> Norman Walsh <ndw@...> | There is no such thing as an absolute
> http://nwalsh.com/            | certainty, but there is assurance
>                               | sufficient for the purposes of human
>                               | life.--John Stuart Mill
>

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[Michael Kay]

No, I shouldn't think that's likely to be useful. It will throw an exception
if there's no license, which I guess you could catch, but there are better
ways.

Processor.isSchemaAware() will return true if you are using Saxon-EE and
have any kind of license that is currently being issued. It will return
false for Saxon-PE. (In theory I could issue a license that gave access only
to Saxon-EE features other than schema processing, for example just to the
optimizer, but currently I don't.)

For more detail, you could do for example

processor.getUnderlyingConfiguration().isLicensedFeature(Configuration.Licen
seFeature.SCHEMA_AWARE_XSLT)

which would return false if the customer has bought the EEQ-01 package which
allows schema-aware XQuery only.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay 

> -----Original Message-----
> From: Norman Walsh [mailto:ndw@...]
> Sent: 03 November 2009 18:30
> To: saxon-help@...
> Subject: Re: [saxon] Schema aware processing
>
> Norman Walsh <ndw@...> writes:
> > How can I tell if it found a license?
>
> Configuration.displayLicenseMessage:
>
> public void displayLicenseMessage() {
> }
>
> Is that right?
>
>                                         Be seeing you,
>                                           norm
>
> --
> Norman Walsh <ndw@...> | The greatest mystery is not that we
> http://nwalsh.com/            | have been flung at random between the
>                               | profusion of matter and of the stars,
>                               | but that within this prison
> we can draw
>                               | from ourselves images powerful enough
>                               | to deny our
> nothingness.--Andre Malraux
>

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[Norman Walsh]

"Michael Kay" <mike@...> writes:
> In 9.2, new Processor(true) will give you the most capable processor it can
> create for you, and you can then determine what you have been given by
> looking at its properties (if necessary, dropping down to the underlying
> Configuration). One of the properties is given by Processor.isSchemaAware(),
> which tells you whether the processor has the capability to load schemas and
> run schema-aware stylesheets and queries. This property will be true only if
> you are running Saxon-EE and a valid license is installed.

Ok. So the fact that I'm getting back false means that it didn't find
the SA jars or didn't find my license or ... I don't know what else.

Are there any switches or knobs I can turn to get some feedback about
what Saxon tried to do and what it was and wasn't able to do?

                                        Be seeing you,
                                          norm

--
Norman Walsh <ndw@...> | The test of courage comes when we are
http://nwalsh.com/            | in the minority. The test of tolerance
                              | comes when we are in the
                              | majority.--Ralph W. Sockman


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[Norman Walsh]

Norman Walsh <ndw@...> writes:
> Are there any switches or knobs I can turn to get some feedback about
> what Saxon tried to do and what it was and wasn't able to do?

FWIW, I did eventually manage to get all my ducks lined up in a row,
but some option for some sort of feedback might be nice.

                                        Be seeing you,
                                          norm

--
Norman Walsh <ndw@...> | Much of the social history of the
http://nwalsh.com/            | Western world over the past three
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                              | worked with what sounded good.--Thomas
                              | Sowell


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