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/*
 * Copyright 2010 Google Inc.
 *
 * 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.google.gwt.validation.client.impl;

import java.lang.annotation.Annotation;
import java.util.HashSet;
import java.util.Set;

import javax.validation.MessageInterpolator;
import javax.validation.TraversableResolver;
import javax.validation.metadata.BeanDescriptor;
import javax.validation.metadata.ConstraintDescriptor;

/**
 * Context for a {@link com.google.gwt.validation.client.GwtValidation}.
 * 
 * 

 * NOTE: This class is not thread safe.
 * 
 * @param  the type of the root bean.
 * 
 */
public final class GwtValidationContext {

  private final BeanDescriptor beanDescriptor;
  private PathImpl path = new PathImpl();
  private final Class rootBeanClass;
  private final T rootBean;
  private final MessageInterpolator messageInterpolator;
  private final TraversableResolver traversableResolver;
  private final AbstractGwtValidator validator;

  /**
   * The set of validated object.
   * 

   * This set is shared with and updated by children contexts created by
   * {@link #append(String)}, {@link #appendIndex(String, int)} and
   * {@link #appendKey(String, Object)}.
   */
  private final Set validatedObjects;

  public GwtValidationContext(Class rootBeanClass, T rootBean, BeanDescriptor beanDescriptor,
      MessageInterpolator messageInterpolator, TraversableResolver traversableResolver,
      AbstractGwtValidator validator) {
    this(rootBeanClass, rootBean, beanDescriptor, messageInterpolator, traversableResolver,
        validator,
        new HashSet());
  }

  private GwtValidationContext(Class rootBeanClass, T rootBean, BeanDescriptor beanDescriptor,
      MessageInterpolator messageInterpolator, TraversableResolver traversableResolver, 
      AbstractGwtValidator validator, Set validatedObjects) {
    this.rootBeanClass = rootBeanClass;
    this.rootBean = rootBean;
    this.beanDescriptor = beanDescriptor;
    this.messageInterpolator = messageInterpolator;
    this.traversableResolver = traversableResolver;
    this.validator = validator;
    this.validatedObjects = new HashSet(validatedObjects);
  }

  public final void addValidatedObject(Object o) {
    validatedObjects.add(o);
  }

  public final boolean alreadyValidated(Object o) {
    return validatedObjects.contains(o);
  }

  /**
   * Append a node named name to the path..
   *
   * @return the new GwtValidationContext.
   */
  public GwtValidationContext append(String name) {
    GwtValidationContext temp = new GwtValidationContext(rootBeanClass,
        rootBean, beanDescriptor, messageInterpolator, traversableResolver, validator,
        validatedObjects);
    temp.path = path.append(name);
    return temp;
  }

  /**
   * Append an indexed node to the path.
   *
   * @return the new GwtValidationContext.
   */
  public GwtValidationContext appendIndex(String name, int index) {
    GwtValidationContext temp = new GwtValidationContext(rootBeanClass,
        rootBean, beanDescriptor, messageInterpolator, traversableResolver, validator,
        validatedObjects);
    temp.path = path.appendIndex(name, index);
    return temp;
  }

  /**
   * Append an iterable node to the path.
   *
   * @return the new GwtValidationContext.
   */
  public GwtValidationContext appendIterable(String name) {
    GwtValidationContext temp = new GwtValidationContext(rootBeanClass,
        rootBean, beanDescriptor, messageInterpolator, traversableResolver, validator,
        validatedObjects);
    temp.path = path.appendIterable(name);
    return temp;
  }

  /**
   * Append a keyed node to the path.
   *
   * @return the new GwtValidationContext.
   */
  public GwtValidationContext appendKey(String name, Object key) {
    GwtValidationContext temp = new GwtValidationContext(rootBeanClass,
        rootBean, beanDescriptor, messageInterpolator, traversableResolver, validator,
        validatedObjects);
    temp.path = path.appendKey(name, key);
    return temp;
  }

  public  ConstraintValidatorContextImpl createConstraintValidatorContext(
      ConstraintDescriptor descriptor) {
    return new ConstraintValidatorContextImpl(path, descriptor);
  }

  public MessageInterpolator getMessageInterpolator() {
    return messageInterpolator;
  }

  public PathImpl getPath() {
    return path;
  }

  public T getRootBean() {
    return rootBean;
  }

  public Class getRootBeanClass() {
    return rootBeanClass;
  }

  public TraversableResolver getTraversableResolver() {
    return traversableResolver;
  }

  public AbstractGwtValidator getValidator() {
    return validator;
  }
}
    

    

    
            
    
            







    
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