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/* Copyright (C) 2002-2007  Egon Willighagen 
 *                    2014  Mark B Vine (orcid:0000-0002-7794-0426)
 *
 * Contact: [email protected]
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 * All we ask is that proper credit is given for our work, which includes
 * - but is not limited to - adding the above copyright notice to the beginning
 * of your source code files, and to any copyright notice that you may distribute
 * with programs based on this work.
 *
 * 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
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */
package org.openscience.cdk.io.cml;

import java.util.StringTokenizer;

import org.openscience.cdk.interfaces.IChemFile;
import org.openscience.cdk.qsar.DescriptorSpecification;
import org.openscience.cdk.qsar.DescriptorValue;
import org.openscience.cdk.qsar.result.BooleanResult;
import org.openscience.cdk.qsar.result.DoubleArrayResult;
import org.openscience.cdk.qsar.result.DoubleResult;
import org.openscience.cdk.qsar.result.IDescriptorResult;
import org.openscience.cdk.qsar.result.IntegerArrayResult;
import org.openscience.cdk.qsar.result.IntegerResult;

import org.xml.sax.Attributes;

/**
 * This is an implementation for the CDK convention.
 *
 * @cdk.module io
 * @cdk.githash
 *
 * @author egonw
 */
public class QSARConvention extends CMLCoreModule {

    private String  currentDescriptorAlgorithmSpecification;
    private String  currentDescriptorImplementationTitel;
    private String  currentDescriptorImplementationVendor;
    private String  currentDescriptorImplementationIdentifier;
    private String  currentDescriptorDataType;
    private String  currentDescriptorResult;
    private boolean currentDescriptorDataIsArray;

    public QSARConvention(IChemFile chemFile) {
        super(chemFile);
    }

    public QSARConvention(ICMLModule conv) {
        super(conv);
    }

    @Override
    public void startElement(CMLStack xpath, String uri, String local, String raw, Attributes atts) {
        //        
        //            
        //              
        //              
        //              
        //              
        //              
        //                
        //              
        //            
        //            72.0
        //          

        if (xpath.endsWith("molecule", "propertyList", "property")) {
            //    		cdo.startObject("MolecularDescriptor");
            currentDescriptorDataIsArray = false;
            currentDescriptorAlgorithmSpecification = "";
            currentDescriptorImplementationTitel = "";
            currentDescriptorImplementationVendor = "";
            currentDescriptorImplementationIdentifier = "";
            currentDescriptorDataType = "";
            currentDescriptorResult = "";
        } else if (xpath.endsWith("property", "metadataList", "metadata")) {
            super.startElement(xpath, uri, local, raw, atts);
            if (DICTREF.equals("qsar:specificationReference")) {
                //    			cdo.setObjectProperty("MolecularDescriptor", "SpecificationReference", atts.getValue("content"));
                currentDescriptorAlgorithmSpecification = atts.getValue("content");
            } else if (DICTREF.equals("qsar:implementationTitle")) {
                //    			cdo.setObjectProperty("MolecularDescriptor", "ImplementationTitle", atts.getValue("content"));
                currentDescriptorImplementationTitel = atts.getValue("content");
            } else if (DICTREF.equals("qsar:implementationIdentifier")) {
                //    			cdo.setObjectProperty("MolecularDescriptor", "ImplementationIdentifier", atts.getValue("content"));
                currentDescriptorImplementationIdentifier = atts.getValue("content");
            } else if (DICTREF.equals("qsar:implementationVendor")) {
                //    			cdo.setObjectProperty("MolecularDescriptor", "ImplementationVendor", atts.getValue("content"));
                currentDescriptorImplementationVendor = atts.getValue("content");
            }
        } else if (xpath.endsWith("propertyList", "property", "scalar")) {
            //    		cdo.setObjectProperty("MolecularDescriptor", "DataType", atts.getValue("dataType"));
            currentDescriptorDataType = atts.getValue("dataType");
            super.startElement(xpath, uri, local, raw, atts);
        } else {
            super.startElement(xpath, uri, local, raw, atts);
        }
    }

    @Override
    public void endElement(CMLStack xpath, String uri, String local, String raw) {
        if (xpath.endsWith("molecule", "propertyList", "property")) {
            //    		cdo.endObject("MolecularDescriptor");
            DescriptorSpecification descriptorSpecification = new DescriptorSpecification(
                    currentDescriptorAlgorithmSpecification, currentDescriptorImplementationTitel,
                    currentDescriptorImplementationIdentifier, currentDescriptorImplementationVendor);
            currentMolecule.setProperty(descriptorSpecification, new DescriptorValue(descriptorSpecification,
                    new String[0], new Object[0],
                    currentDescriptorDataIsArray ? newDescriptorResultArray(currentDescriptorResult)
                            : newDescriptorResult(currentDescriptorResult), new String[0]));
        } else if (xpath.endsWith("property", "scalar")) {
            //    		cdo.setObjectProperty("MolecularDescriptor", "DescriptorValue", currentChars);
            currentDescriptorResult = currentChars;
        } else {
            super.endElement(xpath, uri, local, raw);
        }
    }

    private IDescriptorResult newDescriptorResult(String descriptorValue) {
        IDescriptorResult result = null;
        if ("xsd:double".equals(currentDescriptorDataType)) {
            result = new DoubleResult(Double.parseDouble(descriptorValue));
        } else if ("xsd:integer".equals(currentDescriptorDataType)) {
            result = new IntegerResult(Integer.parseInt(descriptorValue));
        } else if ("xsd:boolean".equals(currentDescriptorDataType)) {
            result = new BooleanResult(Boolean.valueOf(descriptorValue));
        }
        return result;
    }

    private IDescriptorResult newDescriptorResultArray(String descriptorValue) {
        IDescriptorResult result = null;
        if ("xsd:double".equals(currentDescriptorDataType)) {
            result = new DoubleArrayResult();
            StringTokenizer tokenizer = new StringTokenizer(descriptorValue);
            while (tokenizer.hasMoreElements()) {
                ((DoubleArrayResult) result).add(Double.parseDouble(tokenizer.nextToken()));
            }
        } else if ("xsd:integer".equals(currentDescriptorDataType)) {
            result = new IntegerArrayResult();
            StringTokenizer tokenizer = new StringTokenizer(descriptorValue);
            while (tokenizer.hasMoreElements()) {
                ((IntegerArrayResult) result).add(Integer.parseInt(tokenizer.nextToken()));
            }
        }
        return result;
    }
}