ValidateDate.java

/**
 * Copyright © 2002 Instituto Superior Técnico
 *
 * This file is part of FenixEdu Academic.
 *
 * FenixEdu Academic is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * FenixEdu Academic 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with FenixEdu Academic.  If not, see <http://www.gnu.org/licenses/>.
 */
/*
 * Created on 13/Mar/2003
 *
 */
package org.fenixedu.academic.ui.struts.validator;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.validator.Field;
import org.apache.commons.validator.GenericValidator;
import org.apache.commons.validator.ValidatorAction;
import org.apache.commons.validator.util.ValidatorUtils;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.validator.Resources;
import org.fenixedu.academic.util.Data;

/**
 * @author Nuno Nunes (nmsn@rnl.ist.utl.pt)
 * @author Joana Mota (jccm@rnl.ist.utl.pt)
 */
public class ValidateDate {

    public static boolean validate(Object bean, ValidatorAction va, Field field, ActionMessages errors,
            HttpServletRequest request, ServletContext application) {

        String valueString = ValidatorUtils.getValueAsString(bean, field.getProperty());

        String sProperty2 = ValidatorUtils.getValueAsString(bean, field.getVarValue("month"));
        String sProperty3 = ValidatorUtils.getValueAsString(bean, field.getVarValue("day"));

        if (((valueString == null) && (sProperty2 == null) && (sProperty3 == null))
                || ((valueString.length() == 0) && (sProperty2.length() == 0) && (sProperty3.length() == 0))) {
            // errors.add(field.getKey(),Resources.getActionError(request, va,
            // field));
            return true;
        }

        Integer year = null;
        Integer month = null;
        Integer day = null;

        try {
            year = new Integer(valueString);
            month = new Integer(sProperty2);
            day = new Integer(sProperty3);
        } catch (NumberFormatException e) {
            errors.add(field.getKey(), Resources.getActionMessage(request, va, field));
            return false;
        }

        if (!GenericValidator.isBlankOrNull(valueString)) {
            if (!Data.validDate(day, month, year) || year == null || month == null || day == null || year.intValue() < 1
                    || month.intValue() < 0 || day.intValue() < 1) {
                errors.add(field.getKey(), Resources.getActionMessage(request, va, field));
            }

            return false;
        }

        return true;
    }

    // this validator is only valid when used in year field
    public static boolean threeArgsDate(Object bean, ValidatorAction va, Field field, ActionMessages errors,
            HttpServletRequest request, ServletContext application) {

        String valueString1 = ValidatorUtils.getValueAsString(bean, field.getProperty());

        String sProperty2 = ValidatorUtils.getValueAsString(bean, field.getVarValue("month"));
        String sProperty3 = ValidatorUtils.getValueAsString(bean, field.getVarValue("day"));

        if (((valueString1 == null) && (sProperty2 == null) && (sProperty3 == null))
                || ((valueString1.length() == 0) && (sProperty2.length() == 0) && (sProperty3.length() == 0))) {
            // errors.add(field.getKey(),Resources.getActionError(request, va,
            // field));
            return true;
        }

        Integer year = null;
        Integer month = null;
        Integer day = null;

        try {
            year = new Integer(valueString1);
            month = new Integer(sProperty2);
            day = new Integer(sProperty3);
        } catch (NumberFormatException e) {
            errors.add(field.getKey(), Resources.getActionMessage(request, va, field));
            return false;
        }
        String date = new String(day.toString() + "/" + month.toString() + "/" + year);
        String datePattern = "dd/MM/yyyy";
        if (!GenericValidator.isDate(date, datePattern, false)) {
            errors.add(field.getKey(), Resources.getActionMessage(request, va, field));
            return false;

        }
        return true;
    }
}