trunk/bval-jsr303/src/main/java/org/apache/bval/jsr303/DefaultConstraintValidatorFactory.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.bval.jsr303;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorFactory;
import javax.validation.ValidationException;


/**
 * Description: create constraint instances with the default / no-arg constructor <br/>
 */
public class DefaultConstraintValidatorFactory implements ConstraintValidatorFactory {

    /**
     * Instantiate a Constraint.
     *
     * @return Returns a new Constraint instance
     *         The ConstraintFactory is <b>not</b> responsible for calling Constraint#initialize
     */
    public <T extends ConstraintValidator<?, ?>> T getInstance(final Class<T> constraintClass)
    {
      // 2011-03-27 jw: Do not use PrivilegedAction.
      // Otherwise any user code would be executed with the privileges of this class.
      try
      {
        return constraintClass.newInstance();
      }
      catch (final Exception ex)
      {
        throw new ValidationException("Cannot instantiate : " + constraintClass, ex);
      }
    }
}