// $Id: ValidatorFactoryImpl.java 17423 2009-08-26 14:28:57Z 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.validator.engine;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Member;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import javax.validation.ConstraintValidatorFactory;
import javax.validation.MessageInterpolator;
import javax.validation.TraversableResolver;
import javax.validation.ValidationException;
import javax.validation.Validator;
import javax.validation.ValidatorContext;
import javax.validation.ValidatorFactory;
import javax.validation.metadata.ConstraintDescriptor;
import javax.validation.spi.ConfigurationState;
import org.hibernate.validator.metadata.AnnotationIgnores;
import org.hibernate.validator.metadata.BeanMetaDataCache;
import org.hibernate.validator.metadata.BeanMetaDataImpl;
import org.hibernate.validator.metadata.ConstraintHelper;
import org.hibernate.validator.metadata.MetaConstraint;
import org.hibernate.validator.util.ReflectionHelper;
import org.hibernate.validator.xml.XmlMappingParser;
/**
* Factory returning initialized <code>Validator</code> instances.
*
* @author Emmanuel Bernard
* @author Hardy Ferentschik
*/
public class ValidatorFactoryImpl implements ValidatorFactory {
private final MessageInterpolator messageInterpolator;
private final TraversableResolver traversableResolver;
private final ConstraintValidatorFactory constraintValidatorFactory;
private final ConstraintHelper constraintHelper;
private final BeanMetaDataCache beanMetaDataCache;
public ValidatorFactoryImpl(ConfigurationState configurationState) {
this.messageInterpolator = configurationState.getMessageInterpolator();
this.constraintValidatorFactory = configurationState.getConstraintValidatorFactory();
this.traversableResolver = configurationState.getTraversableResolver();
this.constraintHelper = new ConstraintHelper();
this.beanMetaDataCache = new BeanMetaDataCache();
initBeanMetaData( configurationState.getMappingStreams() );
}
public Validator getValidator() {
return usingContext().getValidator();
}
public MessageInterpolator getMessageInterpolator() {
return messageInterpolator;
}
public <T> T unwrap(Class<T> type) {
throw new ValidationException( "Type " + type + " not supported" );
}
public ValidatorContext usingContext() {
return new ValidatorContextImpl(
constraintValidatorFactory,
messageInterpolator,
traversableResolver,
constraintHelper,
beanMetaDataCache
);
}
private <T> void initBeanMetaData(Set<InputStream> mappingStreams) {
XmlMappingParser mappingParser = new XmlMappingParser( constraintHelper );
mappingParser.parse( mappingStreams );
Set<Class<?>> processedClasses = mappingParser.getProcessedClasses();
AnnotationIgnores annotationIgnores = mappingParser.getAnnotationIgnores();
for ( Class<?> clazz : processedClasses ) {
@SuppressWarnings("unchecked")
Class<T> beanClass = ( Class<T> ) clazz;
BeanMetaDataImpl<T> metaData = new BeanMetaDataImpl<T>(
beanClass, constraintHelper, annotationIgnores
);
List<Class<?>> classes = new ArrayList<Class<?>>();
ReflectionHelper.computeClassHierarchy( beanClass, classes );
for ( Class<?> classInHierarchy : classes ) {
if ( processedClasses.contains( classInHierarchy ) ) {
addXmlConfiguredConstraintToMetaData( mappingParser, beanClass, classInHierarchy, metaData );
}
}
if ( !mappingParser.getDefaultSequenceForClass( beanClass ).isEmpty() ) {
metaData.setDefaultGroupSequence( mappingParser.getDefaultSequenceForClass( beanClass ) );
}
beanMetaDataCache.addBeanMetaData( beanClass, metaData );
}
}
private <T, A extends Annotation> void addXmlConfiguredConstraintToMetaData(XmlMappingParser mappingParser, Class<T> rootClass, Class<?> hierarchyClass, BeanMetaDataImpl<T> metaData) {
for ( MetaConstraint<?, ? extends Annotation> constraint : mappingParser.getConstraintsForClass( hierarchyClass ) ) {
if ( hierarchyClass.equals( rootClass ) ) {
@SuppressWarnings("unchecked") // safe cast due to the class check
MetaConstraint<T, ? extends Annotation> castedConstrain = ( MetaConstraint<T, ? extends Annotation> ) constraint;
metaData.addMetaConstraint( hierarchyClass, castedConstrain );
}
else {
MetaConstraint<T, A> newMetaConstraint;
@SuppressWarnings("unchecked")
ConstraintDescriptor<A> descriptor = ( ConstraintDescriptor<A> ) constraint.getDescriptor();
if ( constraint.getMember() == null ) {
newMetaConstraint = new MetaConstraint<T, A>( rootClass, descriptor );
}
else {
newMetaConstraint = new MetaConstraint<T, A>( constraint.getMember(), rootClass, descriptor );
}
metaData.addMetaConstraint( hierarchyClass, newMetaConstraint );
}
}
for ( Member m : mappingParser.getCascadedMembersForClass( hierarchyClass ) ) {
metaData.addCascadedMember( m );
}
}
}