Examples of org.apache.tapestry.util.DefaultPrimaryKeyConverter

org.apache.tapestry.util.DefaultPrimaryKeyConverter
Companion to the {@link org.apache.tapestry.components.ForBean For component}, this class is an implementation of {@link org.apache.tapestry.components.IPrimaryKeyConverter} that performs someadditional handling, such as tracking value sets..
Value sets are sets of value objects maintained by the converter; the converter will provide a synthetic read/write boolean property that indicates if the {@link #getLastValue() last value} isor is not in the set.
A single built-in value set, {@link #isDeleted()} has a special purpose; it controls whether ornot values are returned from {@link #getValues()}. Subclasses may add additional synthetic boolean properties and additional sets.
Why not just store a boolean property in the object itself? Well, deleted is a good example of a property that is meaningful in the context of an operation, but isn't stored ... once an object is deleted (from secondary storage, such as a database) there's no place to store such a flag. The DefaultPrimaryKey converter is used in this context to store transient, operation data ... such as which values are to be deleted.
This class can be thought of as a successor to {@link org.apache.tapestry.form.ListEditMap}. @author Howard M. Lewis Ship @since 4.0

    private DefaultPrimaryKeyConverter _converter;


    public DefaultPrimaryKeyConverter getConverter()
    {
        if (_converter == null)
            _converter = new DefaultPrimaryKeyConverter()
            {
                // Here's why we DON'T use @Bean ...


                @Override
                protected Object provideMissingValue(Object key)

View Full Code Here

            {
                vengine.rmiFailure(updateFailure(), ex, i++);
            }
        }


        DefaultPrimaryKeyConverter converter = getConverter();


        converter.clear();


        for (Publisher publisher : publishers)
        {
            converter.add(publisher.getId(), publisher);
        }
    }

View Full Code Here

    @InjectPage("MyLibrary")
    public abstract MyLibrary getMyLibrary();


    public DefaultPrimaryKeyConverter getConverter()
    {
        if (_converter == null) _converter = new DefaultPrimaryKeyConverter()
        {


            // Here's why we DON'T use @Bean ...


            @Override

View Full Code Here

        };


        Publisher[] publishers = getRemoteTemplate().execute(callback,
                "Could not read publishers.");


        DefaultPrimaryKeyConverter converter = getConverter();


        converter.clear();


        for(Publisher publisher : publishers)
        {
            converter.add(publisher.getId(), publisher);
        }
    }

View Full Code Here

    private DefaultPrimaryKeyConverter _converter;


    public DefaultPrimaryKeyConverter getConverter()
    {
        if (_converter == null)
            _converter = new DefaultPrimaryKeyConverter()
            {
                // Here's why we DON'T use @Bean ...


                @Override
                protected Object provideMissingValue(Object key)

View Full Code Here

        };


        Publisher[] publishers = getRemoteTemplate()
                .execute(callback, "Could not read publishers.");


        DefaultPrimaryKeyConverter converter = getConverter();


        converter.clear();


        for (Publisher publisher : publishers)
        {
            converter.add(publisher.getId(), publisher);
        }
    }

View Full Code Here

TOP

Related Classes of org.apache.tapestry.util.DefaultPrimaryKeyConverter

org.apache.tapestry.vlib.pages.admin.EditPublishers

org.apache.hivemind.ApplicationRuntimeException

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.