package org.geotools.wcs.bindings;

import java.math.BigInteger;
import java.util.Arrays;
import java.util.List;

import javax.xml.namespace.QName;

import net.opengis.gml.DirectPositionType;
import net.opengis.gml.EnvelopeType;
import net.opengis.gml.Gml4wcsFactory;
import net.opengis.wcs10.SpatialSubsetType;
import net.opengis.wcs10.Wcs10Factory;

import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.referencing.CRS;
import org.geotools.wcs.WCS;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;

/**
 * Binding object for the type http://www.opengis.net/wcs:SpatialSubsetType.
 * 
 * <p>
 * 
 * <pre>
 *	 <code>
 *  <complexType name="SpatialSubsetType">
 *      <annotation>
 *          <documentation>Definition of a subset of a coverage spatial domain. Currently, only a grid subset of a coverage domain. </documentation>
 *      </annotation>
 *      <complexContent>
 *          <restriction base="wcs:SpatialDomainType">
 *              <sequence>
 *                  <element ref="gml:Envelope"/>
 *                  <element ref="gml:Grid"/>
 *              </sequence>
 *          </restriction>
 *      </complexContent>
 *  </complexType> 
 * 	
 * </code>
 *	 </pre>
 * 
 * </p>
 * 
 * @generated
 *
 * @source $URL: http://svn.osgeo.org/geotools/trunk/modules/extension/xsd/xsd-wcs/src/main/java/org/geotools/wcs/bindings/SpatialSubsetTypeBinding.java $
 */
public class SpatialSubsetTypeBinding extends AbstractComplexBinding {

    /**
     * @generated
     */
    public QName getTarget() {
        return WCS.SpatialSubsetType;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated modifiable
     */
    public Class getType() {
        return SpatialSubsetType.class;
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     * 
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value)
            throws Exception {
        SpatialSubsetType spatialSubset = Wcs10Factory.eINSTANCE.createSpatialSubsetType();
        
        List<Node> envelopes = node.getChildren("Envelope");
        for (Node envelopeNode : envelopes) {
            ReferencedEnvelope envelope = (ReferencedEnvelope) envelopeNode.getValue();
            EnvelopeType env = Gml4wcsFactory.eINSTANCE.createEnvelopeType();
            
            env.setSrsName(CRS.lookupIdentifier(envelope.getCoordinateReferenceSystem(), true));
            
            DirectPositionType pos1 = Gml4wcsFactory.eINSTANCE.createDirectPositionType();
            DirectPositionType pos2 = Gml4wcsFactory.eINSTANCE.createDirectPositionType();
            
            pos1.setDimension(BigInteger.valueOf(2));
            pos2.setDimension(BigInteger.valueOf(2));
            
            pos1.setValue(Arrays.asList(envelope.getMinX(), envelope.getMinY()));
            pos2.setValue(Arrays.asList(envelope.getMaxX(), envelope.getMaxY()));

            env.getPos().add(pos1);
            env.getPos().add(pos2);
            
            spatialSubset.getEnvelope().add(envelope);
        }
        
        List<Node> gridsNode = node.getChildren("Grid");
        for (Node grid : gridsNode)
            spatialSubset.getGrid().add(grid.getValue());
        
        return spatialSubset;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.geotools.xml.AbstractComplexBinding#getExecutionMode()
     */
    @Override
    public int getExecutionMode() {
        return OVERRIDE;
    }

}