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/*******************************************************************************
* Copyright (C) 2007, 2015:
*
* - Ferdinando Villa - integratedmodelling.org - any
* other authors listed in @author annotations
*
* All rights reserved. This file is part of the k.LAB software suite, meant to enable
* modular, collaborative, integrated development of interoperable data and model
* components. For details, see http://integratedmodelling.org.
*
* This program is free software; you can redistribute it and/or modify it under the terms
* of the Affero General Public License Version 3 or any later version.
*
* This program is distributed in the hope that it will be useful, but without any
* warranty; without even the implied warranty of merchantability or fitness for a
* particular purpose. See the Affero General Public License for more details.
*
* You should have received a copy of the Affero General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite
* 330, Boston, MA 02111-1307, USA. The license is also available at:
* https://www.gnu.org/licenses/agpl.html
*******************************************************************************/
package org.integratedmodelling.engine.geospace.datasources;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.geotools.feature.FeatureIterator;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.integratedmodelling.api.metadata.IMetadata;
import org.integratedmodelling.api.modelling.IDataSource;
import org.integratedmodelling.api.modelling.IExtent;
import org.integratedmodelling.api.modelling.IObserver;
import org.integratedmodelling.api.modelling.IScale;
import org.integratedmodelling.api.modelling.contextualization.IDirectInstantiator;
import org.integratedmodelling.api.modelling.contextualization.IStateContextualizer;
import org.integratedmodelling.api.modelling.runtime.IActiveObjectSource;
import org.integratedmodelling.api.modelling.scheduling.ITransition;
import org.integratedmodelling.api.monitoring.IMonitor;
import org.integratedmodelling.base.HashableObject;
import org.integratedmodelling.common.interfaces.IReifiableObject;
import org.integratedmodelling.common.metadata.Metadata;
import org.integratedmodelling.common.vocabulary.NS;
import org.integratedmodelling.engine.geospace.Geospace;
import org.integratedmodelling.engine.geospace.coverage.ICoverage;
import org.integratedmodelling.engine.geospace.coverage.vector.AbstractVectorCoverage;
import org.integratedmodelling.engine.geospace.extents.Grid;
import org.integratedmodelling.engine.geospace.extents.SpaceExtent;
import org.integratedmodelling.engine.geospace.literals.ShapeValue;
import org.integratedmodelling.engine.modelling.runtime.ObjectSourceSubjectInstantiator;
import org.integratedmodelling.engine.modelling.runtime.Scale;
import org.integratedmodelling.exceptions.KlabException;
import org.integratedmodelling.exceptions.KlabRuntimeException;
import org.integratedmodelling.exceptions.KlabUnsupportedOperationException;
import org.opengis.feature.simple.SimpleFeature;
import com.vividsolutions.jts.geom.Geometry;
/**
* FIXME MONITORABLE!
*
* @author Ferdinando
*/
public abstract class VectorCoverageDataSource extends HashableObject implements IDataSource,
IActiveObjectSource {
protected ICoverage coverage = null;
IMetadata metadata = new Metadata();
IMonitor _monitor;
protected String _id;
// if not passed as an init parameter, this will stay null and we use defaults that
// depend on the projection.
Boolean invertCoordinates = null;
protected int _errors = 0;
class ShapeObject implements IReifiableObject {
SimpleFeature _feature;
ShapeValue _shape;
IScale _scale;
public ShapeObject(SimpleFeature feature) {
_feature = feature;
_shape = new ShapeValue((Geometry) _feature.getDefaultGeometry(), coverage
.getCoordinateReferenceSystem());
}
@Override
public IScale getScale(IScale parent) {
if (_scale == null) {
SpaceExtent pspace = (SpaceExtent) parent.getSpace();
try {
_shape = _shape.transform(pspace.getShape().getCRS());
_shape = pspace.getShape().intersection(_shape);
SpaceExtent space = new SpaceExtent(_shape);
_scale = new Scale(new IExtent[] { space });
} catch (KlabException e) {
throw new KlabRuntimeException(e);
}
}
return _scale;
}
@Override
public Object getAttributeValue(String attribute, IObserver observer) {
Object ret = _feature.getAttribute(attribute);
if (ret == null) {
ret = _feature.getAttribute(attribute.toLowerCase());
}
if (ret == null) {
return null;
}
if (observer != null && NS.isNumericTransformation(observer)) {
ret = Double.parseDouble(ret.toString());
}
return ret;
}
@Override
public String getId() {
return _feature.getID();
}
}
/**
* This must ensure that coverage contains a valid vector coverage.
*
* @throws KlabException
*/
protected abstract void initialize() throws KlabException;
@Override
public IStateContextualizer getContextualizer(IScale context, IObserver observer, IMonitor monitor)
throws KlabException {
initialize();
SpaceExtent space = context.getSpace() instanceof SpaceExtent ? (SpaceExtent) (context.getSpace())
: null;
if (space != null && space.getGrid() != null) {
ICoverage cov = coverage.requireMatch(space.getGrid(), observer, monitor, true);
RegularRasterGridDataSource ds = new RegularRasterGridDataSource(cov, space.getGrid()) {
IMetadata _metadata = new Metadata();
@Override
protected ICoverage readData() throws KlabException {
return this.coverage;
}
@Override
protected Grid getFinalExtent(IScale context) throws KlabException {
return this.finalExtent;
}
@Override
public IMetadata getMetadata() {
return _metadata;
}
@Override
public boolean isAvailable() {
return true;
}
};
return ds.getContextualizer(context, observer, monitor);
} else {
/*
* TODO accessor for vectors - may need to do the monster conversion if the
* context's shapes are different
*/
throw new KlabUnsupportedOperationException("vector accessors not there yet, please be patient");
}
}
@Override
public IMetadata getMetadata() {
return metadata;
}
@Override
public IScale getCoverage() {
Scale ret = new Scale();
try {
initialize();
} catch (KlabException e) {
if (_monitor != null && _errors == 0) {
_monitor.error("vector data source " + _id + " is inaccessible");
_errors++;
}
return ret;
}
if (coverage == null) {
if (_monitor != null && _errors == 0) {
_monitor.error("vector data source " + _id + " is inaccessible");
_errors++;
}
throw new KlabRuntimeException("cannot read vector data source");
}
try {
ShapeValue shape = new ShapeValue(coverage.getEnvelope());
shape = shape.transform(Geospace.get().getDefaultCRS());
ret.mergeExtent(new SpaceExtent(shape), true);
} catch (KlabException e) {
if (_monitor != null && _errors == 0) {
_monitor.error("vector data source " + _id + " is inaccessible");
_errors++;
}
throw new KlabRuntimeException(e);
}
return ret;
}
@Override
public IDirectInstantiator getInstantiator() {
return new ObjectSourceSubjectInstantiator() {
@Override
protected Collection getObjects(IScale scale, ITransition transition) {
return VectorCoverageDataSource.this.getObjects(scale, transition);
}
};
}
@Override
public boolean isAvailable() {
// TODO Auto-generated method stub
return false;
}
public List getObjects(IScale scale, ITransition transition) {
/*
* for now I guess
*/
if (transition != ITransition.INITIALIZATION) {
return null;
}
IExtent space = scale.getSpace();
if (!(space instanceof SpaceExtent)) {
throw new KlabRuntimeException("cannot extract objects from a vector coverage in a non-spatial context");
}
ReferencedEnvelope env = ((SpaceExtent) space).getEnvelope();
if (invertCoordinates != null && invertCoordinates) {
env = new ReferencedEnvelope(env.getMinY(), env.getMaxY(), env.getMinX(), env.getMaxX(), env
.getCoordinateReferenceSystem());
}
ArrayList ret = new ArrayList();
FeatureIterator fit = null;
try {
initialize();
fit = ((AbstractVectorCoverage) coverage).getFeatureIterator(env);
while (fit.hasNext()) {
ret.add(new ShapeObject(fit.next()));
}
} catch (KlabException e) {
throw new KlabRuntimeException(e);
} finally {
if (fit != null) {
fit.close();
}
}
return ret;
}
/**
* Extract the first shape as a shape value.
*
* @return first shape
* @throws KlabException
*/
public ShapeValue extractFirst() throws KlabException {
FeatureIterator fit = null;
SimpleFeature feature = null;
try {
initialize();
fit = ((AbstractVectorCoverage) coverage).getFeatureIterator(null);
if (fit.hasNext()) {
feature = fit.next();
}
} finally {
if (fit != null) {
fit.close();
}
}
return new ShapeValue((Geometry) feature.getDefaultGeometry(), coverage
.getCoordinateReferenceSystem());
}
@Override
public IStateContextualizer getContextualizer(String attribute, IObserver observer, IScale context, IMonitor monitor)
throws KlabException {
/*
* if observer is presence, return rasterizing accessor with no attribute
*/
/*
* else must find attribute with compatible observer and rasterize it, with
* mediation if necessary.
*/
// TODO Auto-generated method stub
return null;
}
}
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