com.draagon.meta.validator.LengthValidator.java Source code

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Here is the source code for com.draagon.meta.validator.LengthValidator.java

Source

/*
 * Copyright 2003 Draagon Software LLC. All Rights Reserved.
 *
 * This software is the proprietary information of Draagon Software
 * LLC. Use is subject to license terms.
 */
package com.draagon.meta.validator;

import com.draagon.meta.*;
import com.draagon.meta.attr.AttributeDef;
import org.apache.commons.validator.GenericValidator;

@SuppressWarnings("serial")
public class LengthValidator extends MetaValidator {
    //private static Log log = LogFactory.getLog( LengthValidator.class );

    /** Minimum length attribute */
    public final static String ATTR_MIN = "min";
    /** Maximum length attribute */
    public final static String ATTR_MAX = "max";

    public LengthValidator(String name) {
        super(name);
        addAttributeDef(new AttributeDef(ATTR_MIN, String.class, false, "Minimum length (0 default)"));
        addAttributeDef(new AttributeDef(ATTR_MAX, String.class, false, "Maximum length (field length default)"));
    }

    /**
     * Validates the value of the field in the specified object
     */
    public void validate(Object object, Object value)
    //throws MetaException
    {
        int min = 0;
        int max = getMetaField(object).getLength();

        if (hasAttribute(ATTR_MIN))
            min = Integer.parseInt((String) getAttribute(ATTR_MIN));
        if (hasAttribute(ATTR_MAX))
            max = Integer.parseInt((String) getAttribute(ATTR_MAX));

        String msg = getMessage("A valid length between " + min + " and " + max + " must be entered");
        String val = (value == null) ? null : value.toString();

        if (!GenericValidator.isBlankOrNull(val) && (val.length() < min || val.length() > max)) {
            throw new InvalidValueException(msg);
        }
    }
}