edu.cudenver.bios.matrixsvc.representation.CholeskyDecompositionXmlRepresentation.java Source code

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Here is the source code for edu.cudenver.bios.matrixsvc.representation.CholeskyDecompositionXmlRepresentation.java

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/*
 * Power Service for the GLIMMPSE Software System.  Processes
 * incoming HTTP requests for power, sample size, and detectable
 * difference
 * 
 * Copyright (C) 2010 Regents of the University of Colorado.  
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package edu.cudenver.bios.matrixsvc.representation;

import edu.cudenver.bios.matrixsvc.application.MatrixConstants;
import edu.cudenver.bios.matrixsvc.application.MatrixLogger;
import edu.cudenver.bios.matrixsvc.application.NamedRealMatrix;

import org.apache.commons.math.linear.CholeskyDecompositionImpl;
import org.apache.log4j.Logger;
import org.restlet.data.MediaType;

import org.restlet.ext.xml.DomRepresentation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

import java.io.IOException;

/**
 * @author Jonathan Cohen
 *
 */
public class CholeskyDecompositionXmlRepresentation extends DomRepresentation {
    private static Logger logger = MatrixLogger.getInstance();

    /**
     * Create an XML representation for a Cholesky Decomposition XML response
     * entity body. 
     * 
     * @param cdImpl is a @see CholeskyDecompositionImpl.
     * @throws IOException
     */
    public CholeskyDecompositionXmlRepresentation(CholeskyDecompositionImpl cdImpl) throws IOException {
        super(MediaType.APPLICATION_XML);
        logger.debug("In CholeskyDecompositionXmlRepresentation constructor");
        Document doc = getDocument();
        Element rootElement = createXml(cdImpl, doc);
        doc.appendChild(rootElement);
        doc.normalizeDocument();
    }

    static Element createXml(CholeskyDecompositionImpl _cdImpl, Document _doc) {
        NamedRealMatrix L = new NamedRealMatrix(_cdImpl.getL());
        NamedRealMatrix LT = new NamedRealMatrix(_cdImpl.getLT());
        L.setName(MatrixConstants.SQ_ROOT_MATRIX_RETURN_NAME);
        LT.setName(MatrixConstants.TRANSPOSE_MATRIX_RETURN_NAME);
        Element rootElem = _doc.createElement(MatrixConstants.TAG_CHOLESKY_DECOMP);

        //Get XML for first matrix
        logger.debug("Calling MatrixXmlRepresentation.createMatrixNodeFromRealMatrix() " + "for L matrix.");
        Node matrixL = MatrixXmlRepresentation.createMatrixNodeFromRealMatrix(L, _doc);

        //Get XML for second matrix
        logger.debug("Calling MatrixXmlRepresentation.createMatrixNodeFromRealMatrix() " + "for LT matrix.");
        Node matrixLT = MatrixXmlRepresentation.createMatrixNodeFromRealMatrix(LT, _doc);

        //Add our matrices to our root element
        rootElem.appendChild(matrixL);
        rootElem.appendChild(matrixLT);

        return rootElem;
    }

}