/* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2011, Refractions Research Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*/
package org.locationtech.udig.catalog.teradata;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import org.locationtech.udig.catalog.CatalogPlugin;
import org.locationtech.udig.catalog.IGeoResourceInfo;
import org.locationtech.udig.catalog.IResolve.Status;
import org.locationtech.udig.ui.graphics.Glyph;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.geotools.data.DataSourceException;
import org.geotools.data.FeatureSource;
import org.geotools.feature.FeatureIterator;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.referencing.CRS;
import org.geotools.referencing.crs.DefaultGeographicCRS;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.type.Name;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import com.vividsolutions.jts.geom.Envelope;
import org.locationtech.udig.catalog.teradata.internal.Messages;
class TeradataResourceInfo extends IGeoResourceInfo {
private TeradataGeoResource owner;
TeradataResourceInfo(TeradataGeoResource owner) throws IOException {
this.owner = owner;
this.name = owner.typename;
if(owner.desc.geometryType != null) {
this.icon = Glyph.icon(owner.desc.geometryType);
}
keywords = new String[] { "teradata", //$NON-NLS-1$
owner.typename };
}
@Override
public synchronized ReferencedEnvelope getBounds() {
if (bounds == null) {
try {
@SuppressWarnings("unchecked")
FeatureSource<SimpleFeatureType, SimpleFeature> source = owner
.resolve(FeatureSource.class, new NullProgressMonitor());
ReferencedEnvelope temp = source.getBounds();
bounds = temp;
if (bounds == null) {
CoordinateReferenceSystem crs = getCRS();
// try getting an envelope out of the crs
org.opengis.geometry.Envelope envelope = CRS
.getEnvelope(crs);
if (envelope != null) {
bounds = new ReferencedEnvelope(new Envelope(envelope
.getLowerCorner().getOrdinate(0), envelope
.getUpperCorner().getOrdinate(0), envelope
.getLowerCorner().getOrdinate(1), envelope
.getUpperCorner().getOrdinate(1)), crs);
} else {
// TODO: perhaps access a preference which indicates
// whether to do a full table scan
// bounds = new ReferencedEnvelope(new Envelope(),crs);
// as a last resort do the full scan
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();
}
}
}
} catch (DataSourceException e) {
Activator.log(
"Exception while generating TeradataGeoResource.", e); //$NON-NLS-1$
} catch (Exception e) {
CatalogPlugin
.getDefault()
.getLog()
.log(new org.eclipse.core.runtime.Status(
IStatus.WARNING,
"org.locationtech.udig.catalog", 0, Messages.TeradataGeoResource_error_layer_bounds, e)); //$NON-NLS-1$
bounds = new ReferencedEnvelope(new Envelope(), null);
}
}
return bounds;
}
public CoordinateReferenceSystem getCRS() {
SimpleFeatureType ft = getFeatureType();
if(ft == null) {
return DefaultGeographicCRS.WGS84;
}
return ft.getGeometryDescriptor().getCoordinateReferenceSystem();
}
private SimpleFeatureType getFeatureType() {
try {
return owner.getSchema();
} catch (IOException e) {
if (e.getMessage().contains("permission")) { //$NON-NLS-1$
owner.setStatus(Status.RESTRICTED_ACCESS, e);
} else {
owner.setStatus(Status.BROKEN, e);
}
Activator
.log("Unable to retrieve SimpleFeatureType schema for type '" + owner.typename + "'.", e); //$NON-NLS-1$ //$NON-NLS-2$
keywords = new String[] { "teradata", //$NON-NLS-1$
owner.typename };
return null;
}
}
public String getName() {
return owner.typename;
}
public URI getSchema() {
SimpleFeatureType ft = getFeatureType();
if (ft == null) return null;
try {
Name typeName = ft.getName();
if (typeName.getNamespaceURI() != null) {
return new URI(ft.getName().getNamespaceURI());
} else {
return null; // should probably be GML?
}
} catch (URISyntaxException e) {
return null;
}
}
public String getTitle() {
return owner.typename;
}
}