Hello,
If I understand well Jody, my approach is not the good one...
- just implement features (don't bother extending DefaultFeature save
> extending for your domain model)
I can't use this idea : in my case, the class I would like to make features
has a lot of processes (methods) to do...
- create a wrapper that makes use of reflection
I can't understand this idea... could you explain a bit ?
And a couple more scary approaches:
> - create a wrapper that makes use of EObject and then generate your model
> with EMF, bonus points for making an FObject super class that handles all
> the feature interfaces for you in one spot
> - don't implement features; the renderer can accept a Collection<Object>
> and the expression subsystem is smart enough to rip values out via bean
> properties or whatever and draw something. Downside is lack of a "data
> access" api so the drawing will not be efficient or indexed or anything.
I prefer avoiding scary methods :-P
I would like to use things that will not be deprecated too fast ! ;-)
Finally, I am thinkinig that maybe the best approach is to create a class
with only a SimpleFeature into, like this :
public class SensorSiteStation extends Place{
/** The feature associated with the [EMAIL PROTECTED] SensorSiteStation}. */
SimpleFeature sensorSiteFeature;
/** constructors methods */
}
Like this, we can use the builders provided for SimpleFeature and
SimpleFeatureType, which seem to be the most used....
What do youo think about that ?
ciao,
Thomas
Cheers,
> Jody
>
> > Thomas
> >
> > 2008/4/10, Anaxa Gore <[EMAIL PROTECTED] <mailto:
> > [EMAIL PROTECTED]>>:
> >
> > Hello,
> >
> > I got an idea to do what I described above, from the
> > DefaultFeature class.
> >
> > First, we create a new class extending DefaultFeature :
> >
> > public class _4_ExtendsFeature extends DefaultFeature{
> > static DefaultFeatureType type;
> > static {
> > try{
> > type = getTestFeatureType();
> > }catch(SchemaException se){}
> > }
> >
> >
> > public _4_ExtendsFeature()throws SchemaException{
> > super(
> > type,
> > new Object[]{null,"test",0},
> > "TestFeature");
> > }
> > }
> >
> > To describe the FeatureType, we create a static method, like this :
> >
> > public static DefaultFeatureType getTestFeatureType() throws
> > SchemaException{
> > GeometryAttributeType geom =
> > (GeometryAttributeType)AttributeTypeFactory.newAttributeType("geom",
> > Point.class, true, 1, null, DefaultGeographicCRS.WGS84);
> > AttributeType name =
> > AttributeTypeFactory.newAttributeType("name", String.class, true);
> > NumericAttributeType number =
> > (NumericAttributeType)AttributeTypeFactory.newAttributeType("number",
> > Integer.class, true);
> > FeatureTypeBuilder builder =
> > FeatureTypeBuilder.newInstance("Sensor Site");
> > builder.addType(geom);
> > builder.addType(name);
> > builder.addType(number);
> > builder.setName("Test Feature");
> > DefaultFeatureType type =
> > (DefaultFeatureType)builder.getFeatureType();
> > return type;
> > }
> >
> > But there are (I think) many problems in this idea :
> >
> > * first, there are a lot of class in gt and geoapi for doing
> > this kind of things. Many are deprecated, and maybe many are
> > going to become deprecated ? So I would like to know if this
> > choice is good for the future ? (for instance, AttributeType
> > - used here - is flagged deprecated, so ...?)
> > * second, it does not allow to extend a type from another one
> > : FeatureTypeBuilder does not contain
> >
> >
> >
> > 2008/4/10, Anaxa Gore <[EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>>:
> >
> > And did you already get some information about how to do
> > that... Because I could'nt find anything about that...
> >
> > Thomas
> >
> > 2008/4/10, [EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]> <[EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>>:
> >
> > Same for me. I'm actually investigating the way primitives
> > and feature types can be combined into real-world objects.
> >
> > >----- Oorspronkelijk bericht -----
> > >Van: Anaxa Gore [mailto:[EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>]
> > >Verzonden: donderdag, april 10, 2008 12:28 PM
> > >Aan: 'Geotools users list'
> > >Onderwerp: [Geotools-gt2-users] [GeoTools-gt2-users]
> > Creating a personal Feature with personal FeatureType
> >
> > >
> > >Hello,
> > >
> > >My application is using a "model" (MVC architecture).
> > >This model is composed of many classes, describing the
> > different objects
> > >manipulating by the user. For example
> > >
> > >public class SensorSiteStation{
> > > /** The height of sensors. */
> > > private double height;
> > > /** The x coordinate of the place. */
> > > private double x;
> > > /** The y coordinate of the place. */
> > > private double y;
> > > /** The terrain elevation of the place. */
> > > private double tElev;
> > > /** The name of the place */
> > > private String name;
> > >
> > > /** The feature associated with the [EMAIL PROTECTED]
> > SensorSiteStation}. */
> > > SimpleFeature mssSensorSiteFeature;
> > > /** The feature type assoiated with the [EMAIL PROTECTED]
> > SensorSiteStation}. */
> > > SimpleFeatureType mssSensorSiteType;
> > >}
> > >
> > >As you can see, each class of my model is composed of a
> > SimpleFeature and
> > >its associated SimpleFeatureType, plus its java attributes.
> > >But I think this is not a good implementation because
> > informations are
> > >redundant in this class (we can find in the FeatureType
> > the height, the
> > >coordinate, the tElev, the name...).
> > >
> > >So I would like to have directly a model class which is a
> > Feature. This kind
> > >of implementation seems to be more efficient and logical.
> > >
> > >I searched how to do that, but can't know what is the best
> > way... and can't
> > >find the global architecture for creating its own feature..
> > >Do I have to create a class which implements SimpleFeature
> > ? But then, there
> > >is A LOT OF work to implement all methods... What sort of
> > Feature and
> > >FeatureType do we have to use ? SimpleFeature and
> > SimpleFeatureType from
> > >geoapi or DefaultFeature and DefaultFeatureType from gt ?
> > >
> > >If somebody already tried to do that, I would be grateful
> > for a piece of
> > >code, an idea or a link..
> > >
> > >Thanks
> > >Thomas
> > >
> >
> >
> >
> >
> >
> > ------------------------------------------------------------------------
> >
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