Examples of org.geotools.feature.FeatureCollection.features()

Class org.geotools.feature.FeatureCollection

Examples of org.geotools.feature.FeatureCollection.features()

org.geotools.feature.FeatureCollection.features()
Obtain a FeatureIterator
of the Features within this FeatureCollection.
The implementation of FeatureIterator must adhere to the rules of fail-fast concurrent modification. In addition (to allow for resource backed collections) the FeatureIterator.close() method must be called.
Example use:
```
 FeatureIterator iterator=collection.features(); try { while( iterator.hasNext()  ){ Feature feature = iterator.next(); System.out.println( feature.getID() ); } } finally { iterator.close(); } 
```
GML Note: The contents of this iterator are considered to be defined by featureMember tags (and/or the single allowed FeatureMembers tag). Please see getFeatureType for more details.
@return A FeatureIterator.

        FeatureCollection features = fs.getFeatures();
        
        assertTrue( features.getBounds().isNull() );
        assertEquals( 0, features.size() );
        
        FeatureIterator i = features.features();
        try {
            assertFalse(i.hasNext());
        } finally {
            i.close();
        }

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            query.setCoordinateSystemReproject(getMapContent().getCoordinateReferenceSystem());
            FeatureSource featureSource = getLayer().getFeatureSource();
            Collection<PropertyDescriptor> descriptors = featureSource.getSchema().getDescriptors();


            FeatureCollection queryResult = featureSource.getFeatures(query);
            FeatureIterator iter = queryResult.features();


            try {
                while (iter.hasNext()) {
                    Feature f = iter.next();
                    result.newFeature(f.getIdentifier().getID());

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        VersioningDataStore synch = (VersioningDataStore) getCatalog().getDataStoreByName("synch")
                .getDataStore(null);
        FeatureSource<SimpleFeatureType, SimpleFeature> fs = synch.getFeatureSource(SYNCH_HISTORY);
        FeatureCollection fc = fs.getFeatures(ff.equals(ff.property("table_name"), ff
                .literal("restricted")));
        FeatureIterator fi = fc.features();
        SimpleFeature f = (SimpleFeature) fi.next();
        fi.close();


        assertEquals(12l, f.getAttribute("central_revision"));
    }

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            CoordinateReferenceSystem crs = null;
            for (int i = 0; i < resultsList.size(); i++) {
                FeatureCollection collection = (FeatureCollection) resultsList
                .get(i);
                FeatureIterator iterator = collection.features();


                try {
                    SimpleFeatureType fType;
                    List<AttributeDescriptor> types;

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        FeatureTypeInfo fti = getCatalog().getFeatureTypeByName(MockData.BASIC_POLYGONS.getLocalPart());
        assertEquals("EPSG:4269", fti.getSRS());
        assertEquals(ProjectionPolicy.FORCE_DECLARED, fti.getProjectionPolicy());
        FeatureCollection fc = fti.getFeatureSource(null, null).getFeatures();
        assertEquals(CRS.decode("EPSG:4269"), fc.getSchema().getCoordinateReferenceSystem());
        FeatureIterator fi = fc.features();
        Feature f = fi.next();
        fi.close();
        assertEquals(CRS.decode("EPSG:4269"), f.getType().getCoordinateReferenceSystem());
    }

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        FeatureTypeInfo fti = getCatalog().getFeatureTypeByName(MockData.POLYGONS.getLocalPart());
        assertEquals("EPSG:4326", fti.getSRS());
        assertEquals(ProjectionPolicy.REPROJECT_TO_DECLARED, fti.getProjectionPolicy());
        FeatureCollection fc = fti.getFeatureSource(null, null).getFeatures();
        assertEquals(CRS.decode("EPSG:4326"), fc.getSchema().getCoordinateReferenceSystem());
        FeatureIterator fi = fc.features();
        Feature f = fi.next();
        
        //test that geometry was actually reprojected
        Geometry g = (Geometry) f.getDefaultGeometryProperty().getValue();
        assertFalse(g.equalsExact(WKT.read(

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        FeatureTypeInfo fti = getCatalog().getFeatureTypeByName(MockData.LINES.getLocalPart());
        assertEquals("EPSG:3004", fti.getSRS());
        assertEquals(ProjectionPolicy.NONE, fti.getProjectionPolicy());
        FeatureCollection fc = fti.getFeatureSource(null, null).getFeatures();
        assertEquals(CRS.decode("EPSG:32615"), fc.getSchema().getCoordinateReferenceSystem());
        FeatureIterator fi = fc.features();
        Feature f = fi.next();
        
        //test that the geometry was left in tact
        Geometry g = (Geometry) f.getDefaultGeometryProperty().getValue();
        assertTrue(g.equalsExact(WKT.read("LINESTRING(500125 500025,500175 500075)")));

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        FeatureTypeInfo fti = getCatalog().getFeatureTypeByName("MyPoints");
        assertEquals("EPSG:4326", fti.getSRS());
        assertEquals(ProjectionPolicy.REPROJECT_TO_DECLARED, fti.getProjectionPolicy());
        FeatureCollection fc = fti.getFeatureSource(null, null).getFeatures();
        assertEquals(CRS.decode("EPSG:4326"), fc.getSchema().getCoordinateReferenceSystem());
        FeatureIterator fi = fc.features();
        Feature f = fi.next();
        
        //test that geometry was reprojected
        Geometry g = (Geometry) f.getDefaultGeometryProperty().getValue();
        assertFalse(g.equalsExact(WKT.read("POINT(500050 500050)")));

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        FeatureCollection fc = (FeatureCollection) fct.getFeature().get(0);


        assertEquals(36, fc.size());
        
        // get first feature
        SimpleFeature sf = (SimpleFeature) fc.features().next();
        Geometry simplified = ((Geometry) sf.getDefaultGeometry());
        assertTrue(simplified instanceof Point);
        assertEquals(sf.getID(),"0");  
        assertEquals(sf.getAttributeCount(), 5);
        assertEquals("75",sf.getProperty("GRAY_INDEX").getValue());

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        FeatureCollectionType fct = (FeatureCollectionType) p.parse(new ByteArrayInputStream(
                response.getOutputStreamContent().getBytes()));
        FeatureCollection fc = (FeatureCollection) fct.getFeature().get(0);


        assertEquals(1, fc.size());
        SimpleFeature sf = (SimpleFeature) fc.features().next();
        Geometry simplified = ((Geometry) sf.getDefaultGeometry());
        // should have been clipped to this specific area
        assertTrue(new Envelope(-100, -90, 40, 45).contains(simplified.getEnvelopeInternal()));
    }
}

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