JSci.io.MathMLDocumentJSciImpl Maven / Gradle / Ivy

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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software. It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ... Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).

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package JSci.io;

import java.io.*;
import java.util.Iterator;
import JSci.maths.*;
import JSci.maths.matrices.AbstractComplexMatrix;
import JSci.maths.matrices.AbstractDoubleMatrix;
import JSci.maths.matrices.AbstractIntegerMatrix;
import JSci.maths.vectors.AbstractComplexVector;
import JSci.maths.vectors.AbstractDoubleVector;
import JSci.maths.vectors.AbstractIntegerVector;
import JSci.mathml.*;
import org.w3c.dom.*;
import org.w3c.dom.mathml.*;

/**
 * The MathMLDocumentJSciImpl class encapsulates an entire MathML document.
 * @version 0.6
 * @author Mark Hale
 */
public class MathMLDocumentJSciImpl extends MathMLDocumentImpl {
        /**
         * Constructs a MathML document.
         */
        public MathMLDocumentJSciImpl() {
                super();
        }

        /**
         * Creates a MathML number element (<cn>).
         */
        public Element createNumber(double x) {
                final Element num=createElement("cn");
                num.appendChild(createTextNode(String.valueOf(x)));
                return num;
        }
        /**
         * Creates a MathML number element (<cn>).
         */
        public Element createNumber(int i) {
                final Element num=createElement("cn");
                num.setAttribute("type","integer");
                num.appendChild(createTextNode(String.valueOf(i)));
                return num;
        }
        /**
         * Creates a MathML number element (<cn>).
         */
        public Element createNumber(Complex z) {
                final Element num=createElement("cn");
                num.setAttribute("type","complex-cartesian");
                num.appendChild(createTextNode(String.valueOf(z.real())));
                num.appendChild(createElement("sep"));
                num.appendChild(createTextNode(String.valueOf(z.imag())));
                return num;
        }

        /**
         * Creates a MathML variable element (<ci>).
         */
        public Element createVariable(Object obj) {
                final Element var=createElement("ci");
                var.appendChild(createTextNode(obj.toString()));
                return var;
        }
        /**
         * Creates a MathML variable element (<ci>).
         */
        public Element createVariable(Object obj,String type) {
                final Element var=createElement("ci");
                var.setAttribute("type",type);
                var.appendChild(createTextNode(obj.toString()));
                return var;
        }

        /**
         * Creates a MathML vector element (<vector>).
         */
        public Element createVector(AbstractDoubleVector v) {
                final Element vector=createElement("vector");
                for(int i=0;i<vector>).
         */
        public Element createVector(AbstractIntegerVector v) {
                final Element vector=createElement("vector");
                for(int i=0;i<vector>).
         */
        public Element createVector(AbstractComplexVector v) {
                final Element vector=createElement("vector");
                for(int i=0;i<matrix>).
         */
        public Element createMatrix(AbstractDoubleMatrix m) {
                final Element matrix=createElement("matrix");
                Element row;
                for(int j,i=0;i<matrix>).
         */
        public Element createMatrix(AbstractIntegerMatrix m) {
                final Element matrix=createElement("matrix");
                Element row;
                for(int j,i=0;i<matrix>).
         */
        public Element createMatrix(AbstractComplexMatrix m) {
                final Element matrix=createElement("matrix");
                Element row;
                for(int j,i=0;i<set>).
         */
        public Element createSet(FiniteSet s) {
                final Element set = createElement("set");
                Iterator iter = s.getElements().iterator();
                while(iter.hasNext())
                        set.appendChild(createVariable(iter.next()));
                return set;
        }

        /**
         * Creates a MathML operator/function element (<apply>).
         * @param op a MathML tag name
         * (plus, minus, times, divide, etc).
         */
        public Element createApply(String op,DocumentFragment args) {
                final Element apply=createElement("apply");
                apply.appendChild(createElement(op));
                apply.appendChild(args);
                return apply;
        }
        /**
         * Creates a MathML operator/function element (<apply>).
         * @param expr a MathMLExpression object.
         */
        public Element createApply(MathMLExpression expr) {
                final Element apply=createElement("apply");
                apply.appendChild(createElement(expr.getOperation()));
                for(int i=0;i\n");
                out.write("\n");
                printNode(out,getDocumentElement(),true);
                out.flush();
        }
        private void printNode(Writer out,Node n,boolean printNS) throws IOException {
                if(n.hasChildNodes()) {
                        out.write("<"+n.getNodeName());
                        if(printNS)
                                out.write(" xmlns=\""+n.getNamespaceURI()+"\"");
                        final NamedNodeMap attr=n.getAttributes();
                        for(int j=0;j");
                        if(n.getFirstChild().getNodeType()!=Node.TEXT_NODE)
                                out.write("\n");
                        final NodeList nl=n.getChildNodes();
                        for(int i=0;i\n");
                } else {
                        if(n.getNodeType()==Node.TEXT_NODE) {
                                out.write(n.getNodeValue());
                        } else {
                                out.write("<"+n.getNodeName()+"/>");
                                if(n.getNextSibling().getNodeType()!=Node.TEXT_NODE)
                                        out.write("\n");
                        }
                }
        }
}