/*
 * Copyright 2006 Werner Guttmann
 *
 * 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 org.exolab.castor.xml.validators;

import org.exolab.castor.xml.TypeValidator;
import org.exolab.castor.xml.ValidationContext;
import org.exolab.castor.xml.ValidationException;

/**
 * The ID Validation class.
 *
 * @author <a href="mailto:werner DOT guttmann AT gmx DOT net">Werner Guttman</a>
 * @version $Revision: 5951 $ $Date: 2003-03-03 02:57:21 -0700 (Mon, 03 Mar 2003) $
 */
public class IdValidator extends StringValidator implements TypeValidator {

  /**
   * Creates a new IdValidator with no restrictions.
   */
  public IdValidator() {
    super();
  } // -- IdValidator

  /**
   * Validates the given Object.
   *
   * @param value the string to validate
   * @param context the ValidationContext
   * @throws ValidationException if the object fails validation.
   */
  public void validate(final String value, final ValidationContext context)
      throws ValidationException {
    super.validate(value, context);
  } // -- validate

  /**
   * Validates the given Object.
   *
   * @param object the Object to validate
   * @throws ValidationException if the object fails validation.
   */
  public void validate(final Object object) throws ValidationException {
    validate(object, (ValidationContext) null);
  } // -- validate

  /**
   * Validates the given Object.
   *
   * @param object the Object to validate
   * @param context the ValidationContext
   * @throws ValidationException if the object fails validation.
   */
  public void validate(final Object object, final ValidationContext context)
      throws ValidationException {
    if (object == null) {
      String err = "IdValidator cannot validate a null object.";
      throw new ValidationException(err);
    }

    String value = null;
    if (!(object instanceof String)) {
      throw new ValidationException("IDs should be of type String");
    }

    value = (String) object;

    if (value.equals("")) {
      String err = "Invalid ID value: '' is not a valid value.";
      throw new ValidationException(err);
    }

    context.addID(value);

    // validate(value, context);
  } // -- validate

} // -- IdValidator
