How to support javax.xml.datatype.XMLGregorianCalendar ?

[lmu]

Hi there,

First of all, thanks or this really helpful project.

I'm sung PODAM to fill JAXB generated obeject, one of the XML field is a date and this date is bind to a javax.xml.datatype.XMLGregorianCalendar object.
When podam tries fill generate a value for that field I get this warnings, and of course my field stay null.

Mar 25, 2015 3:21:35 PM uk.co.jemos.podam.api.PodamFactoryImpl populatePojo
WARNING: Couldn't find a suitable value for attribute class ocpp.cs._2_0_0.ChargingProfile[class javax.xml.datatype.XMLGregorianCalendar]. It will be left to null.
15:21:35,177  WARN CentralSystemService:122 - No default message found for [MeterValuesResponse], generate it
15:21:35,193  WARN CentralSystemService:122 - No default message found for [BootNotificationResponse], generate it
Mar 25, 2015 3:21:35 PM uk.co.jemos.podam.api.LoggingExternalFactory manufacturePojo
WARNING: Cannot instantiate class javax.xml.datatype.XMLGregorianCalendar with arguments []. Returning null.
Mar 25, 2015 3:21:35 PM uk.co.jemos.podam.api.PodamFactoryImpl instantiatePojoWithoutConstructors
WARNING: For class class javax.xml.datatype.XMLGregorianCalendar PODAM could not possibly create a value. It will be returned as null.

So my question is, how can I handle this particular type ? Can I make a kind of javax.xml.datatype.XMLGregorianCalendar handler in PODAM ?

Thanks.

[lmu]

To go further I've successfully used @PodamStrategyValue(XMLGregorianCalendarStrategy.class) on the generated code.

And my question is more "How to do the same thing without the annotation" ?

For now my only choice is to process the generated code and add the annotation, do we have another mean to do this ?

Thanks.

[Marco Tedone]

Hi, there is a test with an example of how to achieve this? 

Regards, 

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[Daniil Ivanov]

Hi,

XMLGregorianCalendar is an abstract class, which PODAM cannot instantiate. So PODAM
will consult a DataProviderStrategy for a specific implementation to instantiate it
instead. Thus, define implementation extending XMLGregorianCalendar,
with static method returning instance

public static class XMLGregorianCalendarImpl extends XMLGregorianCalendar {

    public static XMLGregorianCalendar getInstance() throws DatatypeConfigurationException {
        DatatypeFactory factory = DatatypeFactory.newInstance();
        return factory.newXMLGregorianCalendar(new GregorianCalendar());
    }

    ...
}

Get reference to a DataProviderStrategy (there are many ways to do that)

RandomDataProviderStrategy strategy = RandomDataProviderStrategy.getInstance();
PodamFactory podam = new PodamFactoryImpl(strategy);

Map XMLGregorianCalendar to XMLGregorianCalendarImpl

strategy.addSpecific(XMLGregorianCalendar.class, XMLGregorianCalendarImpl.class);

Now it works:

XMLGregorianCalendar pojo = podam.manufacturePojo(XMLGregorianCalendar.class);

Thanks, Daniil

[lmu]

Just perfect !
I works now ;)

[lmu]

I've been to quick to celebrate...
I've post an extract of my project I'm sure I'm missing a dumb thing but I can't figure wich one ><

I've add the specific class handler but it seems it is not called by podam.

[Daniil Ivanov]

Right, it doesn't work outside of PODAM package...

Then use external factory

private final static PodamFactory externalFactory =
        new PodamFactory() {

            @Override
            public <T> T manufacturePojo(Class<T> pojoClass,
                    Type... genericTypeArgs) {
                try {
                    if (pojoClass.isAssignableFrom(XMLGregorianCalendar.class)) {
                        DatatypeFactory factory = DatatypeFactory.newInstance();
                        @SuppressWarnings("unchecked")
                        T calendar = (T) factory.newXMLGregorianCalendar(new GregorianCalendar());
                        LOG.info("Externally created XMLGregorianCalendar");
                        return calendar;
                    } else if (pojoClass.isAssignableFrom(Duration.class)) {
                        DatatypeFactory factory = DatatypeFactory.newInstance();
                        @SuppressWarnings("unchecked")
                        T duration = (T) factory.newDuration(0L);
                        LOG.info("Externally created Duration");
                        return duration;
                    }
                } catch (Exception e) {
                    throw new IllegalStateException("Manufacturing failed", e);
                }
                return null;
            }

            @Override
            public <T> T manufacturePojo(Class<T> pojoClass) {
                return this.manufacturePojo(pojoClass, NO_TYPES);
            }

            @Override
            public <T> T manufacturePojoWithFullData(Class<T> pojoClass,
                    Type... genericTypeArgs) {
                return this.manufacturePojo(pojoClass, genericTypeArgs);
            }

            @Override
            public DataProviderStrategy getStrategy() {
                return null;
            }

            @Override
            public ClassInfoStrategy getClassStrategy() {
                return null;
            }

            @Override
            public PodamFactory setClassStrategy(
                    ClassInfoStrategy classInfoStrategy) {
                return null;
            }
};

Register external factory to PODAM factory:

private final static PodamFactory podam = new PodamFactoryImpl(externalFactory);

Now the external factory will be handling all requests PODAM factory cannot handle:

XMLGregorianCalendar pojo = podam.manufacturePojo(XMLGregorianCalendar.class);

Unfortunately, XMLGregorianCalendar throws PodamMockeryException. It was fixed in PODAM 5.2.0-SNAPSHOT (and will be in upcoming release).

[lmu]

This one works perfectly !
Great job, thanks.

Le mercredi 25 mars 2015 16:35:20 UTC+1, lmu a écrit :

[Marco Tedone]

I've made another change and introduced an Abstractexternalfactory that takes care of all the boilerplate code. Currently available from 5.2.1-SNAPSHOT. Will be released with 5.2.1.RELEASE

--

[alessandro mancini]

Hello! I'm using 5.5.1.RELEASE Podam version. 

I'm tryng to do this:

RandomDataProviderStrategy strategy = new RandomDataProviderStrategyImpl();

strategy.addOrReplaceSpecific(XMLGregorianCalendar.class, XMLGregorianCalendarImpl.class);

   

PodamFactory factory = new PodamFactoryImpl(strategy);

XMLGregorianCalendar pojo = factory.manufacturePojo(XMLGregorianCalendar.class);

where XMLGregorianCalendarImpl is com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.

My code throws an Exception:

Exception in thread "main" uk.co.jemos.podam.exceptions.PodamMockeryException

at uk.co.jemos.podam.api.PodamFactoryImpl.manufacturePojo(PodamFactoryImpl.java:182)

at it.sogei.podam.App.main(App.java:35)

Caused by: java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at uk.co.jemos.podam.api.PodamFactoryImpl.populatePojoInternal(PodamFactoryImpl.java:1407)

at uk.co.jemos.podam.api.PodamFactoryImpl.manufacturePojoInternal(PodamFactoryImpl.java:1249)

at uk.co.jemos.podam.api.PodamFactoryImpl.manufacturePojoInternal(PodamFactoryImpl.java:1234)

at uk.co.jemos.podam.api.PodamFactoryImpl.manufacturePojo(PodamFactoryImpl.java:175)

... 1 more

Caused by: java.lang.IllegalArgumentException: Valore -247.795.888 non valido per il campo Day.

at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.invalidFieldValue(XMLGregorianCalendarImpl.java:1294)

at com.sun.org.apache.xerces.internal.jaxp.datatype.XMLGregorianCalendarImpl.setDay(XMLGregorianCalendarImpl.java:1250)

... 9 more

How can i fix this? 

Thanks in advance. Best regards,

Alessandro.

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[Daniil Ivanov]

Answer to your question is two comments above from it.

Thanks, Daniil