Application: gvSIG desktop

package org.gvsig.expressionfield.project.documents.table.operators;

import org.apache.bsf.BSFException;

import org.apache.bsf.BSFManager;

import org.gvsig.andami.PluginServices;

import org.gvsig.expressionfield.ExpressionFieldExtension;

import org.gvsig.expressionfield.project.documents.table.AbstractOperator;

import org.gvsig.expressionfield.project.documents.table.IOperator;

/**

 * @author Vicente Caballero Navarro

 */

public class ToDate extends AbstractOperator{

        public String addText(String s) {

                return toString()+"("+s+")";

        }

        public String toString() {

                return "toDate";

        }

        public void eval(BSFManager interpreter) throws BSFException {

//                interpreter.eval(ExpressionFieldExtension.BEANSHELL,null,-1,-1,"java.util.Date toDate(String value){return new java.text.SimpleDateFormat().parse(value);};");

                interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,

                                "import java.text.DateFormat as DateFormat\n" +

                                "import java.text.SimpleDateFormat as SimpleDateFormat\n" +

                                "dateFormat = DateFormat.getInstance()\n" +

                                "myDateFormat = SimpleDateFormat()\n" +

                                "def toDate(value, format=None):\n" +

                                "  if format != None:\n"+

                                "    myDateFormat.applyPattern(format)\n"+

                                "    return myDateFormat.parse(value)\n"+

                                "  return dateFormat.parse(value)");

        }

        public boolean isEnable() {

                return (getType()==IOperator.DATE);

        }

        public String getTooltip(){

                return PluginServices.getText(this,"operator")+":  "+toString()+"("+PluginServices.getText(this,"parameter")+"[,"+PluginServices.getText(this,"format")+"])"+"\n"+getDescription();

        }

        public String getDescription() {

                return PluginServices.getText(this, "parameter") + "1: " +

            PluginServices.getText(this, "string_value") + "\n" +

                PluginServices.getText(this, "format") + " ("+PluginServices.getText(this, "optional")+"): " +

            PluginServices.getText(this, "string_value") + "\n" +

            PluginServices.getText(this, "returns") + ": " +

            PluginServices.getText(this, "date_value") + "\n" +

            PluginServices.getText(this, "description") + ": " +

            "Returns a date object from string parameter formatted according to\nthe parameter format if it is supplied.\n\n"+

            "The format should follow the specifications of\n" +

            "'http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html'.\n\n"+

            "Examples: (for the date of December 23, 2008)\n"+

            "  'dd/MM/yy'  23/12/08\n"+

            "  'dd/MM/yyyy'  23/12/2008\n"+

            "  'dd/MMM/yyyy'  23/dec/2008\n"+

            "  'dd/MMMM/yyyy'  23/december/2008\n";

        }

}