ubic.gemma.web.util.ValidationUtil.java Source code

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Here is the source code for ubic.gemma.web.util.ValidationUtil.java

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/*
 * The Gemma project
 * 
 * Copyright (c) 2006 University of British Columbia
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package ubic.gemma.web.util;

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.springframework.validation.Errors;
import org.springmodules.validation.commons.FieldChecks;

/**
 * ValidationUtil Helper class for performing custom validations that aren't already included in the core Commons
 * Validator.
 * 
 * @author <a href="mailto:matt@raibledesigns.com">Matt Raible</a>
 * @author pavlidis
 * @version $Id: ValidationUtil.java,v 1.5 2006/10/22 17:30:27 paul Exp $
 */
public class ValidationUtil extends FieldChecks {

    /**
     * 
     */
    private static final long serialVersionUID = -1055125736570838963L;

    /**
     * Validates that two fields match. This goes with the custom declaration in the validation-rules-custom.xml file.
     * 
     * @param bean
     * @param va
     * @param field
     * @param errors
     * @param request
     * @return boolean
     */
    public static boolean validateTwoFields(Object bean, ValidatorAction va, Field field, Errors errors) {
        String value = ValidatorUtils.getValueAsString(bean, field.getProperty());
        String sProperty2 = field.getVarValue("secondProperty");
        String value2 = ValidatorUtils.getValueAsString(bean, sProperty2);

        if (!GenericValidator.isBlankOrNull(value)) {
            try {
                if (!value.equals(value2)) {
                    FieldChecks.rejectValue(errors, field, va);
                    return false;
                }
            } catch (Exception e) {
                FieldChecks.rejectValue(errors, field, va);
                return false;
            }
        }

        return true;
    }

    /**
     * Validates that a field has a length in some range. This goes with the custom declaration in the
     * validation-rules-custom.xml file.
     * 
     * @param bean
     * @param va
     * @param field
     * @param errors
     * @return boolean
     * @author pavlidis
     */
    public static boolean validateLengthRange(Object bean, ValidatorAction va, Field field, Errors errors) {
        String value = ValidatorUtils.getValueAsString(bean, field.getProperty());
        String minLengthS = field.getVarValue("minlength");
        String maxLengthS = field.getVarValue("maxlength");

        assert minLengthS != null && maxLengthS != null : "Length variables names aren't valid for field";

        if (!GenericValidator.isBlankOrNull(value)) {
            try {

                int minLength = Integer.parseInt(minLengthS);
                int maxLength = Integer.parseInt(maxLengthS);

                if (value.length() < minLength || value.length() > maxLength) {
                    FieldChecks.rejectValue(errors, field, va);
                    return false;
                }
            } catch (Exception e) {
                FieldChecks.rejectValue(errors, field, va);
                return false;
            }
        }

        return true;
    }

    /**
     * Check that a value is an integer greater than zero.
     * 
     * @param bean
     * @param va
     * @param field
     * @param errors
     * @return
     */
    public static boolean validatePositiveNonZeroInteger(Object bean, ValidatorAction va, Field field,
            Errors errors) {
        String value = ValidatorUtils.getValueAsString(bean, field.getProperty());

        try {
            int v = Integer.parseInt(value);
            if (v <= 0) {
                FieldChecks.rejectValue(errors, field, va);
                return false;
            }
        } catch (Exception e) {
            FieldChecks.rejectValue(errors, field, va);
            return false;
        }

        return true;
    }

}