Examples of org.opengis.feature.simple.SimpleFeature

org.opengis.feature.simple.SimpleFeature
An instance of {@link SimpleFeatureType} composed of fixed list values in a known order.
The definition of a "simple feature" can be summed up as the following:
- made up of only non-complex attributes, no associations
- attributes are of multiplicity 1
- attributes are ordered
- attribute names are unqualified (namespaceURI == null)
Attribute Access
The order and multiplicity restrictions on simple feature make attribute values accessible via an index. For example consider the following shapefile entry:
```
 | GEOMETRY   | INT | STRING | | POINT(0 0) |  0  | "zero" | 
```
Accessing attributes via index would look like:
```
 SimpleFeature feature = ...; Geometry g = (Geometry) feature.getAttribute( 0 ); Integer i = (Integer) feature.getAttribute( 1 ); String s = (String) feature.getAttribute( 2 ); 
```
One could also access by name:
```
 SimpleFeature feature = ...; Geometry g = (Geometry) feature.getAttribute( "GEOMETRY" ); Integer i = (Integer) feature.getAttribute( "INT" ); String s = (String) feature.getAttribute( "STRING" ); 
```
Note: Attribute access via getAttribute() methods returns attribute values, and not the attributes themselves. For access to the actual attributes {@link ComplexAttribute#getProperty(String)} can be used.
@see SimpleFeatureType @author Jody Garnett (LISAsoft) @author Justin Deoliveira (The Open Planning Project) @since 2.5 @version 8.0 @source $URL$

  public void testLayerBeansToSimpleFeature() throws GeomajasException {
    SimpleFeatureType type = service.toSimpleFeatureType(layer.getLayerInfo());
    List<InternalFeature> features = vectorLayerService.getFeatures("beans", null, filterService
        .createFidFilter(new String[] {"1"}), null, VectorLayerService.FEATURE_INCLUDE_ALL);
    Assert.assertEquals(1, features.size());
    SimpleFeature feature = service.toSimpleFeature(features.get(0), type);
    Assert.assertEquals("bean1", feature.getAttribute(0));
    Assert.assertEquals(true, feature.getAttribute(1));
  }

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              boolean lenient = true; // allow for some error due to different datums
              MathTransform transform = CRS.findMathTransform(dataCRS, mapCRS, lenient);
              
              while (featureIterator.hasNext()) 
              {
                SimpleFeature feature = featureIterator.next();
    
                GeometryType geomType = feature.getFeatureType().getGeometryDescriptor().getType();
                
                // handle appropriate shape/upload type
                if(gisUpload.type == GisUploadType.ROUTES)
                {  
                  if(geomType.getBinding() != MultiLineString.class)
                  {
                    Logger.error("Unexpected geometry type: ", geomType);
                    continue;
                  }
                
                  MultiLineString multiLineString = (MultiLineString)JTS.transform((Geometry)feature.getDefaultGeometry(), transform);
                  
                
                  GisRoute route = new GisRoute();
                    
                    route.gisUpload = gisUpload;
                    route.agency = gisUpload.agency;
                    route.oid = feature.getID();
                    route.originalShape = multiLineString;
                    route.originalShape.setSRID(4326);
                    
                    if(gisUpload.fieldName != null)
                  {
                    FeatureAttributeFormatter attribFormatter = new FeatureAttributeFormatter(gisUpload.fieldName);
                    route.routeName =  attribFormatter.format(feature);
                    
                  }
                  if(gisUpload.fieldId != null)
                {
                  FeatureAttributeFormatter attribFormatter = new FeatureAttributeFormatter(gisUpload.fieldId);
                  route.routeId =  attribFormatter.format(feature);
                }
                if(gisUpload.fieldDescription != null)
                {
                  FeatureAttributeFormatter attribFormatter = new FeatureAttributeFormatter(gisUpload.fieldDescription);
                  route.description =  attribFormatter.format(feature);
                }
                  
                  route.save();
                  
                  route.processSegments();
                  
                   }
                else if(gisUpload.type == GisUploadType.STOPS)
                {
                  if(geomType.getBinding() != Point.class)
                  {
                    Logger.error("Unexpected geometry type: ", geomType);
                    continue;
                  }
                
                  GisStop stop = new GisStop();
                    
                  stop.gisUpload = gisUpload;
                  stop.agency = gisUpload.agency;
                  stop.oid = feature.getID();
                  stop.shape = (Point)JTS.transform((Geometry)feature.getDefaultGeometry(), transform);
                  stop.shape.setSRID(4326);
                    
                  if(gisUpload.fieldName != null)
                  {
                    FeatureAttributeFormatter attribFormatter = new FeatureAttributeFormatter(gisUpload.fieldName);

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                    featureBuilder.add(s.stopName);
                    featureBuilder.add(s.stopCode);
                    featureBuilder.add(s.stopDesc);
                    featureBuilder.add(s.gtfsStopId);
                    featureBuilder.add(s.agency.name);
                    SimpleFeature feature = featureBuilder.buildFeature(null);
                    collection.add(feature);  
              }
            }
            else if(gisExport.type.equals(GisUploadType.ROUTES))
            {
              dataStore.createSchema(ROUTE_TYPE);
              featureBuilder = new SimpleFeatureBuilder(ROUTE_TYPE);
              
                List<Route> routes = Route.find("agency in (:ids)").bind("ids", gisExport.agencies).fetch();
              
                // check for duplicates


                // HashMap<String, Boolean> existingRoutes = new HashMap<String,Boolean>();
                
              for(Route r : routes)
              {
//                String routeId = r.routeLongName + "_" + r.routeDesc + "_ " + r.phone.id;
//                
//                if(existingRoutes.containsKey(routeId))
//                  continue;
//                else
//                  existingRoutes.put(routeId, true); 
                
                
                List<TripPattern> patterns = TripPattern.find("route = ?", r).fetch();
                for(TripPattern tp : patterns)
                  {
                  if(tp.shape == null)
                    continue;
                
                  featureBuilder.add(tp.shape.shape);
                  featureBuilder.add(tp.name);
                  featureBuilder.add(r.routeShortName);
                      featureBuilder.add(r.routeLongName);
                      featureBuilder.add(r.routeDesc);
                      
                      if(r.routeType != null)
                        featureBuilder.add(r.routeType.toString());
                      else
                        featureBuilder.add("");
                      
                      featureBuilder.add(r.routeUrl);
                      featureBuilder.add(r.routeColor);
                      featureBuilder.add(r.routeTextColor);
                      featureBuilder.add(r.agency.name);
                      SimpleFeature feature = featureBuilder.buildFeature(null);
                      collection.add(feature);  
                  }
              }
            }
            else

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        List<Geometry> geoms = new ArrayList<Geometry>();
        SimpleFeatureIterator featureIterator = featureCollection.features();


        while( featureIterator.hasNext() ) {
            SimpleFeature feature = featureIterator.next();
            Geometry geometry = (Geometry) feature.getDefaultGeometry();
            geoms.add(geometry.reverse());


        }


        GeometryFactory factory = new GeometryFactory();

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        return attribute;
    }


    public void modify( Object element, String property, Object value ) {
        Item item=(Item) element;
        SimpleFeature feature=(SimpleFeature) item.getData();
        Object oldValue=feature.getAttribute(property);
        if( oldValue==null ){
            if( value==null )
                return;
            else
                makeModification(feature, layer, property, value, item);

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                            }
                            getContext().sendASyncCommand(
                                    getContext().getSelectionFactory().createNoSelectCommand());
                            return;
                        }
                        SimpleFeature feature = iter.next();
                        getContext().sendASyncCommand(
                                getContext().getEditFactory().createSetEditFeatureCommand(feature,
                                        selectedLayer));
                        getContext().sendASyncCommand(
                                getContext().getSelectionFactory().createFIDSelectCommand(

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            bounds = new ReferencedEnvelope(new Envelope(), crs);
            FeatureIterator<SimpleFeature> iter = source
                .getFeatures().features();
            try {
              while (iter.hasNext()) {
                SimpleFeature element = iter.next();
                if (bounds.isNull())
                  bounds.init(element.getBounds());
                else
                  bounds.include(element.getBounds());
              }
            } finally {
              iter.close();
            }
          }

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                        // wether to do a full table scan
                        // bounds = new ReferencedEnvelope(new Envelope(),crs);
                        // as a last resort do the full scan
                      FeatureIterator<SimpleFeature> r = fs.getFeatures().features();
                        try{
                        SimpleFeature f = r.next();


                        bounds = new ReferencedEnvelope(new Envelope(), crs);
                        bounds.init(f.getBounds());
                        for( ; r.hasNext(); ) {
                            f = r.next();
                            bounds.include(f.getBounds());
                        }
                        }finally{
                            r.close();
                        }
                    }

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     * 
     * @param selection
     */
    public void showLocation( Object selection ){
        // selection should be an Feture (of some sort)
        SimpleFeature feature = (SimpleFeature) selection;
        Geometry geom = (Geometry) feature.getDefaultGeometry();
        Point point = geom.getCentroid();
        
        IMap imap = ApplicationGIS.getActiveMap();
        if( imap == ApplicationGIS.NO_MAP ) return;

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    */
   protected IBaseLabelProvider createLabelProvider() {
       return new LabelProvider(){
           public String getText( Object element ) {
               if( element instanceof SimpleFeature ){
                   SimpleFeature feature = (SimpleFeature) element;
                   return feature.getID();
               }
               return super.getText(element);
            }
       };
   }

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Examples of org.opengis.feature.simple.SimpleFeature

Attribute Access

Related Classes of org.opengis.feature.simple.SimpleFeature