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Module repackaging of the Hibernate validator library and Validation API (JSR 303)
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// $Id: ConstraintValidatorContextImpl.java 17241 2009-08-06 12:21:47Z hardy.ferentschik $
/*
* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.hibernate.validation.engine;

import java.util.ArrayList;
import java.util.List;
import javax.validation.ConstraintValidatorContext;
import javax.validation.Path;
import javax.validation.metadata.ConstraintDescriptor;

/**
 * @author Hardy Ferentschik
 */
public class ConstraintValidatorContextImpl implements ConstraintValidatorContext {

	private final List errorMessages = new ArrayList( 3 );
	private final Path propertyPath;
	private final ConstraintDescriptor constraintDescriptor;
	private boolean defaultDisabled;


	public ConstraintValidatorContextImpl(Path propertyPath, ConstraintDescriptor constraintDescriptor) {
		this.propertyPath = propertyPath;
		this.constraintDescriptor = constraintDescriptor;
	}

	public void disableDefaultError() {
		defaultDisabled = true;
	}

	public String getDefaultErrorMessageTemplate() {
		return ( String ) constraintDescriptor.getAttributes().get( "message" );
	}

	public ErrorBuilder buildErrorWithMessageTemplate(String messageTemplate) {
		return new ErrorBuilderImpl( messageTemplate, propertyPath );
	}

	public ConstraintDescriptor getConstraintDescriptor() {
		return constraintDescriptor;
	}

	public boolean isDefaultErrorDisabled() {
		return defaultDisabled;
	}

	public List getErrorMessages() {
		List returnedErrorMessages = new ArrayList( errorMessages );
		if ( !defaultDisabled ) {
			returnedErrorMessages.add(
					new ErrorMessage( getDefaultErrorMessageTemplate(), propertyPath )
			);
		}
		return returnedErrorMessages;
	}

	public class ErrorMessage {
		private final String message;
		private final Path propertyPath;

		public ErrorMessage(String message, Path property) {
			this.message = message;
			this.propertyPath = property;
		}

		public String getMessage() {
			return message;
		}

		public Path getPath() {
			return propertyPath;
		}
	}

	class ErrorBuilderImpl implements ErrorBuilder {
		String messageTemplate;
		Path propertyPath;

		ErrorBuilderImpl(String template, Path path) {
			messageTemplate = template;
			propertyPath = path;
		}

		public NodeBuilderDefinedContext addSubNode(String name) {
			PathImpl path = PathImpl.createShallowCopy( propertyPath );
			path.addNode( new NodeImpl( name ) );
			return new NodeBuilderImpl( messageTemplate, path );
		}

		public ConstraintValidatorContext addError() {
			errorMessages.add( new ErrorMessage( messageTemplate, propertyPath ) );
			return ConstraintValidatorContextImpl.this;
		}
	}

	class NodeBuilderImpl implements ErrorBuilder.NodeBuilderDefinedContext {
		String messageTemplate;
		PathImpl propertyPath;

		NodeBuilderImpl(String template, PathImpl path) {
			messageTemplate = template;
			propertyPath = path;
		}

		public ErrorBuilder.NodeBuilderCustomizableContext addSubNode(String name) {
			NodeImpl node = new NodeImpl( name );
			propertyPath.addNode( node );
			return new InIterableNodeBuilderImpl( messageTemplate, propertyPath );
		}

		public ConstraintValidatorContext addError() {
			errorMessages.add( new ErrorMessage( messageTemplate, propertyPath ) );
			return ConstraintValidatorContextImpl.this;
		}
	}

	class InIterableNodeBuilderImpl implements ErrorBuilder.NodeBuilderCustomizableContext {
		String messageTemplate;
		PathImpl propertyPath;

		InIterableNodeBuilderImpl(String template, PathImpl path) {
			messageTemplate = template;
			propertyPath = path;
		}

		public ErrorBuilder.NodeContextBuilder inIterable() {
			return new InIterablePropertiesBuilderImpl( messageTemplate, propertyPath );
		}

		public ErrorBuilder.NodeBuilderCustomizableContext addSubNode(String name) {
			Path.Node node = new NodeImpl( name );
			propertyPath.addNode( node );
			return this;
		}

		public ConstraintValidatorContext addError() {
			errorMessages.add( new ErrorMessage( messageTemplate, propertyPath ) );
			return ConstraintValidatorContextImpl.this;
		}
	}

	class InIterablePropertiesBuilderImpl implements ErrorBuilder.NodeContextBuilder {
		String messageTemplate;
		PathImpl propertyPath;

		InIterablePropertiesBuilderImpl(String template, PathImpl path) {
			messageTemplate = template;
			propertyPath = path;
			propertyPath.getLeafNode().setInIterable( true );
		}

		public ErrorBuilder.NodeBuilderDefinedContext atKey(Object key) {
			propertyPath.getLeafNode().setKey( key );
			return new NodeBuilderImpl( messageTemplate, propertyPath );
		}

		public ErrorBuilder.NodeBuilderDefinedContext atIndex(Integer index) {
			propertyPath.getLeafNode().setIndex( index );
			return new NodeBuilderImpl( messageTemplate, propertyPath );
		}

		public ErrorBuilder.NodeBuilderCustomizableContext addSubNode(String name) {
			Path.Node node = new NodeImpl( name );
			propertyPath.addNode( node );
			return new InIterableNodeBuilderImpl( messageTemplate, propertyPath );
		}

		public ConstraintValidatorContext addError() {
			errorMessages.add( new ErrorMessage( messageTemplate, propertyPath ) );
			return ConstraintValidatorContextImpl.this;
		}
	}
}