tinygrscoringengine.TinyGRExpression.java Source code

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Here is the source code for tinygrscoringengine.TinyGRExpression.java

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/*************************************************************************
 * Educational Online Test Delivery System Copyright (c) 2014 American
 * Institutes for Research
 *
 * Distributed under the AIR Open Source License, Version 1.0 See accompanying
 * file AIR-License-1_0.txt or at
 * https://bitbucket.org/sbacoss/eotds/wiki/AIR_Open_Source_License
 *************************************************************************/

package tinygrscoringengine;

import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;

import qtiscoringengine.BaseType;
import qtiscoringengine.Cardinality;
import qtiscoringengine.DEPoint;
import qtiscoringengine.Expression;
import AIR.Common.Helpers._Ref;
import AIR.Common.Utilities.JavaPrimitiveUtils;
import AIR.Common.xml.XmlReader;

/**
 * @author temp_mbikkina
 *
 */
public abstract class TinyGRExpression extends Expression {

    public TinyGraphicType _graphicReturnType = TinyGraphicType.Unknown;
    public List<TGRParameterConstraint> _graphicParameterConstraints = new ArrayList<TGRParameterConstraint>();

    public TinyGRExpression(Element node, int minparm, int maxparm, BaseType returnType,
            Cardinality returnCardinality, TinyGraphicType tinyGraphicType) {
        super(node, minparm, maxparm, returnType, returnCardinality);
        _graphicReturnType = tinyGraphicType;
    }

    public TinyGRExpression(Element node, int minparm, int maxparm, BaseType returnType,
            Cardinality returnCardinality) {
        super(node, minparm, maxparm, returnType, returnCardinality);
        _graphicReturnType = TinyGraphicType.None;
    }

    public void addGraphicParameterConstraint(String name, TinyGraphicType type) {
        _graphicParameterConstraints.add(new TGRParameterConstraint(name, type));
    }

    public void addGraphicParameterConstraint(String name, List<TinyGraphicType> types) {
        _graphicParameterConstraints.add(new TGRParameterConstraint(name, types));
    }

    public void addGraphicParameterConstraint(int position, TinyGraphicType type) {
        _graphicParameterConstraints.add(new TGRParameterConstraint(position, type));
    }

    public void setReturnType(TinyGraphicType type) {
        _graphicReturnType = type;
    }

    public static DEPoint pointFromXml(String xml) throws TinyGRException {
        try {
            String text = "";
            StringReader sr = new StringReader(xml);

            XmlReader reader = new XmlReader(sr);
            Document doc = new Document();
            doc = reader.getDocument();
            if ("Point".equals(doc.getRootElement().getName()))
                text = doc.getRootElement().getText();

            if (StringUtils.isEmpty(text)) {
                return null;
            }

            int locationOfX = text.indexOf('(');
            int locationOfXC = text.indexOf(',');
            int endOfPair = text.indexOf(')');

            String xText = text.substring(locationOfX + 1, locationOfXC).trim();
            String yText = text.substring(locationOfXC + 1, endOfPair).trim();

            _Ref<Integer> x = new _Ref<Integer>(0);
            _Ref<Integer> y = new _Ref<Integer>(0);
            boolean status = JavaPrimitiveUtils.intTryParse(xText, x);

            if (status)
                status = JavaPrimitiveUtils.intTryParse(yText, y);

            if (status) {
                return new DEPoint(x.get(), y.get());
            } else {
                return null;
            }
        } catch (Exception exp) {
            throw new TinyGRException(exp);
        }
    }
}