Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

*

* $Id: DefaultDimension.java 4054 2006-02-10 13:22:35Z jaume $

* $Log$

* Revision 1.3.2.4  2006-02-10 13:22:35  jaume

* now analyzes dimensions on demand

*

* Revision 1.3.2.3  2006/01/31 16:25:24  jaume

* correcciones de bugs

*

* Revision 1.4  2006/01/26 16:07:14  jaume

* *** empty log message ***

*

* Revision 1.3.2.1  2006/01/26 12:59:32  jaume

* 0.5

*

* Revision 1.3  2006/01/25 09:08:53  jaume

* test save and reload project

*

* Revision 1.2  2006/01/24 14:36:33  jaume

* This is the new version

*

* Revision 1.1.2.1  2006/01/20 15:22:46  jaume

* *** empty log message ***

*

*

*/

package com.iver.cit.gvsig.fmap.layers;

/**

 * This class instances a regular WMS dimension. It handles single, multiple and

 * interval values and uses them as they were a point, a list or a regularly

 * split line, respectivelly.<br>

 * <p>

 * As far as it implements IFMapWMSDimension it uses the same interface and

 * documentation.

 * </p>

 * @author jaume dominguez faus (jaume.dominguez@iver.es)

 *

 */

public class DefaultDimension implements IFMapWMSDimension {

        static private final String digit = "[0-9]";

    static private final String nonZeroDigit = "[1-9]";

    static private final String letter = "[_$%a-zA-Z]";

    static private final String word = letter+"("+letter+"|"+digit+")+";

    static private final String floatingPointNumber = "("+digit+"+(\\."+digit+"+)?)";

    static private final String integerNumber = nonZeroDigit+digit+"+";

    static private final String dimensionItem = "("+floatingPointNumber+"|"+word+")";

    /**

     * regular expression for matching dimensions.

     */

    static private final String regexpDefaultDimensionExpression =

            "("+floatingPointNumber+"/"+floatingPointNumber+"/"+floatingPointNumber+"|"+

                dimensionItem+"(,"+dimensionItem+")*)";

        private String name;

    private String unit;

    private String unitSymbol;

    private String expression;

    private String period;

    private Object minValue;

    private Object maxValue;

        private int type;

        private boolean compiled = false;

    /**

     * Creates a new instance of DefaultDimension.

     * @param _name

     * @param _units

     * @param _unitSymbol

     * @param _dimensionExpression

     */

    public DefaultDimension(String _name, String _units, String _unitSymbol, String _dimensionExpression) {

            this.name = _name;

            this.unit = _units;

            this.unitSymbol = _unitSymbol;

            setExpression(_dimensionExpression);

    }

    /*

     *  (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getName()

     */

    public String getName() {

                return name;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getUnit()

         */

        public String getUnit() {

                return unit;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getUnitSymbol()

         */

        public String getUnitSymbol() {

                return unitSymbol;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getLowLimit()

         */

        public String getLowLimit() {

                return (String) minValue;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getHighLimit()

         */

        public String getHighLimit() {

                return (String) maxValue;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getResolution()

         */

        public String getResolution() {

                if (type == INTERVAL) {

                    String[] s = expression.split("/");

                    return (s.length == 1) ? s[3] : null;

            } else return null;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#isValidValue(java.lang.String)

         */

        public boolean isValidValue(String value) {

                return value.matches(word) || value.matches(floatingPointNumber);

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#valueOf(java.lang.String)

         */

        public Object valueOf(String value) throws IllegalArgumentException {

                if (compiled) {

                        if (value.matches(word)) {

                                return (String) value;

                        } else if (value.matches(integerNumber)){

                                return new Integer(value);

                        }

                        else if (value.matches(floatingPointNumber)) {

                                return new Float(value);

                        }

                }

                return null;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#valueAt(int)

         */

        public String valueAt(int pos) throws ArrayIndexOutOfBoundsException {

                if (compiled) {

                        if (pos<0 || pos>valueCount())

                                throw new ArrayIndexOutOfBoundsException(pos+"(must be >= 0 and <="+valueCount()+")");

                        if (type == SINGLE_VALUE)

                                return expression;

                        if (type == MULTIPLE_VALUE)

                                return expression.split(",")[pos];

                        if (type == INTERVAL) {

                                double minPos = Double.parseDouble((String) minValue);

                                double maxPos = Double.parseDouble((String) maxValue);

                                double step = Double.parseDouble(period);

                                double newPos = minPos + (step*pos);

                                if (newPos < minPos)

                                        return minPos+"";

                                if (newPos > maxPos)

                                        return maxPos+"";

                                return newPos+"";

                        }

                }

        return null;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#valueCount()

         */

        public int valueCount() {

                if (compiled) {

                        if (type == MULTIPLE_VALUE) {

                                return expression.split(",").length;

                        } else if (type == INTERVAL) {

                                int count;

                                double min = Double.parseDouble((String) minValue);

                                double max = Double.parseDouble((String) maxValue);

                                double step = Double.parseDouble(period);

                                double distance = max - min;

                                count = (int) (distance/step);

                                return count;

                        } else {

                                return 1;

                        }

                }

                return -1;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getExpression()

         */

        public String getExpression() {

                return expression;

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#setExpression(java.lang.String)

         */

        public void setExpression(String expr) {

                expression = expr.toUpperCase();

        }

        /*

         *  (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.IFMapWMSDimension#getType()

         */

        public int getType() {

                return type;

        }

        public void compile() throws IllegalArgumentException {

                if (expression.matches(regexpDefaultDimensionExpression)){

        } else {

            //System.err.println("Invalid dimension expression: "+expr+" (for "+this.getName()+")");

            throw new IllegalArgumentException();

        }

        String separator;

        if (expression.indexOf("/")!=-1) {

                separator = "/";

                type = INTERVAL;

        } else if (expression.indexOf(",")!=-1) {

                separator = ",";

                type = MULTIPLE_VALUE;

        } else {

                separator = ",";

                type = SINGLE_VALUE;

        }

        compiled = true;

        String[] s = expression.split(separator);

        minValue = valueOf(s[0]);

        if (type == INTERVAL) {

                maxValue = (s.length>1) ? valueOf(s[1]) : valueOf(s[0]);

                period = (s.length>2) ? s[2] : null;

        } else if (type == MULTIPLE_VALUE) {

                maxValue = valueOf(s[s.length-1]);

        } else {

                maxValue = valueOf(s[0]);

        }

        }

}