/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
 * (c) 2001 - 2013 OpenPlans
 * This code is licensed under the GPL 2.0 license, available at the root
 * application directory.
 */
package org.geoserver.wfs.xml.v1_0_0;

import java.math.BigInteger;

import javax.xml.namespace.QName;

import net.opengis.wfs.GetFeatureType;
import net.opengis.wfs.QueryType;
import net.opengis.wfs.WfsFactory;
import org.geoserver.wfs.xml.SqlViewParamsExtractor;

import org.geotools.util.Converters;
import org.geotools.xml.AbstractComplexBinding;
import org.geotools.xml.ElementInstance;
import org.geotools.xml.Node;


/**
 * Binding object for the type http://www.opengis.net/wfs:GetFeatureType.
 *
 * <p>
 *        <pre>
 *         <code>
 *  <xsd:complexType name="GetFeatureType">       <xsd:annotation>
 *              <xsd:documentation>             A GetFeature element
 *              contains one or more Query elements             that
 *              describe a query operation on one feature type.  In
 *              response to a GetFeature request, a Web Feature Service
 *              must be able to generate a GML2 response that validates
 *              using a schema generated by the DescribeFeatureType request.
 *              A Web Feature Service may support other possibly non-XML
 *              (and even binary) output formats as long as those formats
 *              are advertised in the capabilities document.
 *          </xsd:documentation>       </xsd:annotation>
 *          <xsd:sequence>          <xsd:element maxOccurs="unbounded"
 *          ref="wfs:Query"/>       </xsd:sequence>       <xsd:attribute
 *          fixed="1.0.0" name="version" type="xsd:string" use="required"/>
 *          <xsd:attribute fixed="WFS" name="service" type="xsd:string"
 *      use="required"/>       <xsd:attribute name="handle"
 *          type="xsd:string" use="optional"/>       <xsd:attribute
 *          default="GML2" name="outputFormat" type="xsd:string"
 *          use="optional">          <xsd:annotation>
 *                  <xsd:documentation>                The outputFormat
 *                  attribute is used to specify the output
 *                  format that the Web Feature Service should generate in
 *                  response to a GetFeature or GetFeatureWithLock element.
 *                  The default value of GML2 indicates that the output is
 *                  an                XML document that conforms to the
 *                  Geography Markup Language                (GML)
 *                  Implementation Specification V2.0.                 Other
 *                  values may be used to specify other formats as long
 *                  as those values are advertised in the capabilities
 *                  document.                For example, the value WKB may
 *                  be used to indicate that a                 Well Known
 *                  Binary format be used to encode the output.
 *              </xsd:documentation>          </xsd:annotation>
 *      </xsd:attribute>       <xsd:attribute name="maxFeatures"
 *          type="xsd:positiveInteger" use="optional">
 *              <xsd:annotation>             <xsd:documentation>
 *                  The maxFeatures attribute is used to specify the maximum
 *                  number of features that a GetFeature operation should
 *                  generate (regardless of the actual number of query
 *                  hits).             </xsd:documentation>
 *          </xsd:annotation>       </xsd:attribute>    </xsd:complexType>
 *
 *          </code>
 *         </pre>
 * @generated
 */
public class GetFeatureTypeBinding extends AbstractComplexBinding {
    WfsFactory wfsfactory;

    public GetFeatureTypeBinding(WfsFactory wfsfactory) {
        this.wfsfactory = wfsfactory;
    }

    /**
     * @generated
     */
    public QName getTarget() {
        return WFS.GETFEATURETYPE;
    }

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

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     *
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value)
        throws Exception {
        GetFeatureType getFeature = wfsfactory.createGetFeatureType();

        WFSBindingUtils.service(getFeature, node);
        WFSBindingUtils.version(getFeature, node);
        WFSBindingUtils.outputFormat(getFeature, node, "GML2");

        if (node.getAttributeValue("handle") != null) {
            getFeature.setHandle((String) node.getAttributeValue("handle"));
        }

        //get the max features
        Number number = (Number) node.getAttributeValue("maxFeatures");
        if (number != null) {
            getFeature.setMaxFeatures(WFSBindingUtils.asBigInteger(number));
        }
        
        //startIndex (wfs 2.0)
        if (node.hasAttribute("startIndex")) {
            //convert manually since this is not standard schema for wfs 1.1
            BigInteger startIndex = 
                Converters.convert(node.getAttributeValue("startIndex"), BigInteger.class);
            getFeature.setStartIndex(startIndex);
        }
        
        //queries
        getFeature.getQuery().addAll(node.getChildValues(QueryType.class));
        
        // viewParams
        SqlViewParamsExtractor.viewParams(getFeature, node);


        return getFeature;
    }
}