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'rapiddweller Common' is an open source Java library forked from Databene Commons by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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 com.rapiddweller.common.validator;

import com.rapiddweller.common.Validator;

/**
 * Validates a String by length and characters.
 * Created at 14.08.2008 09:19:51
 *
 * @author Volker Bergmann
 * @since 0.4.5
 */
public class StringValidator extends StringLengthValidator {

  private final Validator charValidator;

  // constructors ----------------------------------------------------------------------------------------------------

  /**
   * Instantiates a new String validator.
   */
  public StringValidator() {
    this(null);
  }

  /**
   * Instantiates a new String validator.
   *
   * @param charValidator the char validator
   */
  public StringValidator(Validator charValidator) {
    this(charValidator, 0, null);
  }

  /**
   * Instantiates a new String validator.
   *
   * @param minLength the min length
   * @param maxLength the max length
   */
  public StringValidator(int minLength, Integer maxLength) {
    this(null, minLength, maxLength);
  }

  /**
   * Instantiates a new String validator.
   *
   * @param charValidator the char validator
   * @param minLength     the min length
   * @param maxLength     the max length
   */
  public StringValidator(Validator charValidator, int minLength, Integer maxLength) {
    super(minLength, maxLength);
    this.charValidator = charValidator;
  }

  // Validator implementation ----------------------------------------------------------------------------------------

  @Override
  public boolean valid(String text) {
    if (!super.valid(text)) {
      return false;
    }
    if (charValidator != null) {
      for (int i = 0; i < text.length(); i++) {
        if (!charValidator.valid(text.charAt(i))) {
          return false;
        }
      }
    }
    return true;
  }
}