net.sf.sail.webapp.presentation.validators.GroupParametersValidator.java Source code

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Here is the source code for net.sf.sail.webapp.presentation.validators.GroupParametersValidator.java

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/**
 * Copyright (c) 2006 Encore Research Group, University of Toronto
 * 
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package net.sf.sail.webapp.presentation.validators;

import net.sf.sail.webapp.domain.group.impl.GroupParameters;

import org.apache.commons.lang.StringUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

/**
 * The validator for the addgroup page.
 * 
 * @author Laurel Williams
 * 
 * @version $Id$
 * 
 * A validator for the add groups page.
 */
public class GroupParametersValidator implements Validator {

    public static final int MAX_GROUP_NAME_LENGTH = 50;

    /**
     * @see org.springframework.validation.Validator#supports(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    public boolean supports(Class clazz) {
        return GroupParameters.class.isAssignableFrom(clazz);
    }

    /**
     * @see org.springframework.validation.Validator#validate(java.lang.Object, org.springframework.validation.Errors)
     */
    public void validate(Object groupParametersIn, Errors errors) {
        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "error.groupname.not-specified");
        if (errors.getFieldErrorCount("name") > 0) {
            return;
        }
        GroupParameters groupParameters = (GroupParameters) groupParametersIn;
        if (!StringUtils.isAlphanumeric(groupParameters.getName())) {
            errors.rejectValue("name", "error.groupname.illegal-characters");
        }
        if (groupParameters.getName().length() > MAX_GROUP_NAME_LENGTH) {
            errors.rejectValue("name", "error.groupname.too-long");
        }
        if (groupParameters.getParentId() < 0) {
            errors.rejectValue("parentId", "error.groupparent.must-be-non-negative");
        }
    }

}