Application: gvSIG desktop » gvSIG tools: Expression Field

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 Floor extends AbstractOperator{

        public String addText(String s) {

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

        }

        public String toString() {

                return "floor";

        }

        public void eval(BSFManager interpreter) throws BSFException {

                interpreter.exec(ExpressionFieldExtension.JYTHON,null,-1,-1,"def floor(value):\n" +

                                "  import java.lang.Math\n" +

                                "  return java.lang.Math.floor(value)");

        }

        public boolean isEnable() {

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

        }

        public String getDescription() {

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

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

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

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

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

        "Returns the largest (closest to positive infinity) double value that is not greater than the argument and is equal to a mathematical integer. Special cases:\n" +

        "* If the argument value is already equal to a mathematical integer, then the result is the same as the argument.\n" +

        "* If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.\n";

    }

}