org.graylog2.database.validators.LimitedStringValidator Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.database.validators;
import org.graylog2.plugin.database.validators.ValidationResult;
import static com.google.common.base.Preconditions.checkArgument;
public class LimitedStringValidator extends FilledStringValidator {
private final int minLength;
private final int maxLength;
public LimitedStringValidator(int minLength, int maxLength) {
checkArgument(minLength > 0, "minLength must be greater than 0");
checkArgument(maxLength > 0, "maxLength must be greater than 0");
checkArgument(minLength <= maxLength, "maxLength must be greater than or equal to minLength");
this.minLength = minLength;
this.maxLength = maxLength;
}
/**
* Validates: applies the validation from {@link FilledStringValidator} and also check that value's length
* is between the minimum and maximum length passed to the constructor.
*
* @param value The object to check
* @return validation result
*/
@Override
public ValidationResult validate(Object value) {
ValidationResult result = super.validate(value);
if (result instanceof ValidationResult.ValidationPassed) {
final String sValue = (String)value;
if (sValue.length() < minLength || sValue.length() > maxLength) {
result = new ValidationResult.ValidationFailed("Value is not between " + minLength + " and " + maxLength + " in length!");
}
}
return result;
}
}