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/*******************************************************************************
 * Copyright 2012 Anteros Tecnologia
 *  
 * 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 br.com.anteros.bean.validation.util;


import br.com.anteros.bean.validation.ConstraintValidatorContextImpl;
import br.com.anteros.validation.api.ConstraintValidatorContext;
import br.com.anteros.validation.api.ConstraintValidatorContext.ConstraintViolationBuilder.NodeContextBuilder;

/**
 * Description: Implementation of {@link NodeContextBuilder}.

 */
final class NodeContextBuilderImpl
      implements ConstraintValidatorContext.ConstraintViolationBuilder.NodeContextBuilder {
    private final ConstraintValidatorContextImpl parent;
    private final String messageTemplate;
    private final PathImpl propertyPath;
    // The name of the last "added" node, it will only be added if it has a non-null name
    // The actual incorporation in the path will take place when the definition of the current leaf node is complete
    private final NodeImpl node;

    /**
     * Create a new NodeContextBuilderImpl instance.
     * @param contextImpl
     * @param template
     * @param path
     */
    NodeContextBuilderImpl(ConstraintValidatorContextImpl contextImpl,
                                    String template, PathImpl path, NodeImpl node) {
        parent = contextImpl;
        messageTemplate = template;
        propertyPath = path;
        this.node = node;
    }

    /**
     * {@inheritDoc}
     */
    public ConstraintValidatorContext.ConstraintViolationBuilder.NodeBuilderDefinedContext atKey(
          Object key) {
        node.setKey(key);
        propertyPath.addNode(node);
        return new NodeBuilderDefinedContextImpl(parent, messageTemplate, propertyPath);
    }

    /**
     * {@inheritDoc}
     */
    public ConstraintValidatorContext.ConstraintViolationBuilder.NodeBuilderDefinedContext atIndex(
          Integer index) {
        node.setIndex(index);
        propertyPath.addNode(node);
        return new NodeBuilderDefinedContextImpl(parent, messageTemplate, propertyPath);
    }

    /**
     * {@inheritDoc}
     */
    public ConstraintValidatorContext.ConstraintViolationBuilder.NodeBuilderCustomizableContext addNode(
          String name) {
        propertyPath.addNode(node);
        return new NodeBuilderCustomizableContextImpl(parent, messageTemplate, propertyPath, name);
    }

    /**
     * {@inheritDoc}
     */
    public ConstraintValidatorContext addConstraintViolation() {
        propertyPath.addNode(node);
        parent.addError(messageTemplate, propertyPath);
        return parent;
    }
    
}