qtiscoringengine.ISECustomOperator.java Source code

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Here is the source code for qtiscoringengine.ISECustomOperator.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
 * 
 * http://www.smarterapp.org/documents/American_Institutes_for_Research_Open_Source_Software_License.pdf
 ******************************************************************************/
package qtiscoringengine;

import org.jdom2.Attribute;
import org.jdom2.Element;

import tds.itemscoringengine.IItemScorer;

/*
 * Shiva: This class originally existed in the .NET code in itemscoringengine
 * project. As of now that code has already been ported. However, to make this
 * project completely self contained these classes have been moved to here. To
 * update these please look in itemscoringengine project. In .NET
 * ItemScoringEngine is a separate project than QTIScoringEngine but that is not
 * the case for OSS and hence for us this is a better organization.
 */
public class ISECustomOperator implements ICustomOperatorFactory {
    private IItemScorer _externalScorer;

    public ISECustomOperator(IItemScorer externalScorer) {
        _externalScorer = externalScorer;
    }

    public boolean supportsOperator(Element customOperatorNode) {
        Element coElement = customOperatorNode;
        Attribute classAttribute = coElement.getAttribute("class");
        if (classAttribute == null)
            return false;
        return _externalScorer.GetScorerInfo(classAttribute.getValue()) != null;
    }

    public Expression createExpression(Element customOperatorNode) {
        return new ISECustomExpression(customOperatorNode, _externalScorer);
    }
}