/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, 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.internal.metadata.provider;
import java.io.InputStream;
import java.lang.annotation.ElementType;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.hibernate.validator.internal.metadata.core.AnnotationProcessingOptions;
import org.hibernate.validator.internal.metadata.core.ConstraintHelper;
import org.hibernate.validator.internal.metadata.core.MetaConstraint;
import org.hibernate.validator.internal.metadata.location.BeanConstraintLocation;
import org.hibernate.validator.internal.metadata.location.ConstraintLocation;
import org.hibernate.validator.internal.metadata.location.ExecutableConstraintLocation;
import org.hibernate.validator.internal.metadata.raw.ConfigurationSource;
import org.hibernate.validator.internal.metadata.raw.ConstrainedElement;
import org.hibernate.validator.internal.metadata.raw.ConstrainedExecutable;
import org.hibernate.validator.internal.metadata.raw.ConstrainedField;
import org.hibernate.validator.internal.metadata.raw.ConstrainedType;
import org.hibernate.validator.internal.util.CollectionHelper.Partitioner;
import org.hibernate.validator.internal.xml.XmlMappingParser;
import static org.hibernate.validator.internal.util.CollectionHelper.newHashSet;
import static org.hibernate.validator.internal.util.CollectionHelper.partition;
/**
* A {@link MetaDataProvider} providing constraint related meta data based on
* XML descriptors as defined by the Bean Validation API.
*
* @author Gunnar Morling
* @author Hardy Ferentschik
*/
public class XmlMetaDataProvider extends MetaDataProviderKeyedByClassName {
private final AnnotationProcessingOptions annotationProcessingOptions;
/**
* @param constraintHelper the constraint helper
* @param mappingStreams the input stream for the xml configuration
*/
public XmlMetaDataProvider(ConstraintHelper constraintHelper, Set<InputStream> mappingStreams) {
super( constraintHelper );
XmlMappingParser mappingParser = new XmlMappingParser( constraintHelper );
mappingParser.parse( mappingStreams );
for ( Class<?> clazz : mappingParser.getXmlConfiguredClasses() ) {
Map<ConstraintLocation, Set<MetaConstraint<?>>> constraintsByLocation = partition(
mappingParser.getConstraintsForClass( clazz ), byLocation()
);
Set<ConstraintLocation> cascades = getCascades( mappingParser, clazz );
Set<ConstrainedElement> constrainedElements = getConstrainedElements( constraintsByLocation, cascades );
addBeanConfiguration(
clazz,
createBeanConfiguration(
ConfigurationSource.XML,
clazz,
constrainedElements,
mappingParser.getDefaultSequenceForClass( clazz ),
null
)
);
}
annotationProcessingOptions = mappingParser.getAnnotationProcessingOptions();
}
@Override
public AnnotationProcessingOptions getAnnotationProcessingOptions() {
return annotationProcessingOptions;
}
private Set<ConstrainedElement> getConstrainedElements(Map<ConstraintLocation, Set<MetaConstraint<?>>> constraintsByLocation, Set<ConstraintLocation> cascades) {
Set<ConstraintLocation> configuredLocations = new HashSet<ConstraintLocation>( cascades );
configuredLocations.addAll( constraintsByLocation.keySet() );
Set<ConstrainedElement> propertyMetaData = newHashSet();
for ( ConstraintLocation oneConfiguredLocation : configuredLocations ) {
if ( oneConfiguredLocation.getElementType() == ElementType.FIELD ) {
propertyMetaData.add(
new ConstrainedField(
ConfigurationSource.XML,
(BeanConstraintLocation) oneConfiguredLocation,
constraintsByLocation.get( oneConfiguredLocation ),
Collections.<Class<?>, Class<?>>emptyMap(),
cascades.contains( oneConfiguredLocation )
)
);
}
else if ( oneConfiguredLocation.getElementType() == ElementType.METHOD ) {
propertyMetaData.add(
new ConstrainedExecutable(
ConfigurationSource.XML,
new ExecutableConstraintLocation( (Method) oneConfiguredLocation.getMember() ),
constraintsByLocation.get( oneConfiguredLocation ),
cascades.contains( oneConfiguredLocation )
)
);
}
else if ( oneConfiguredLocation.getElementType() == ElementType.TYPE ) {
propertyMetaData.add(
new ConstrainedType(
ConfigurationSource.XML,
(BeanConstraintLocation) oneConfiguredLocation,
constraintsByLocation.get( oneConfiguredLocation )
)
);
}
}
return propertyMetaData;
}
/**
* @param mappingParser the xml parser
* @param clazz the type for which to retrieve cascaded members
*
* @return returns a set of cascaded constraints
*/
private Set<ConstraintLocation> getCascades(XmlMappingParser mappingParser, Class<?> clazz) {
Set<ConstraintLocation> cascadedConstraintSet = newHashSet();
for ( Member member : mappingParser.getCascadedMembersForClass( clazz ) ) {
cascadedConstraintSet.add( new BeanConstraintLocation( member ) );
}
return cascadedConstraintSet;
}
protected Partitioner<ConstraintLocation, MetaConstraint<?>> byLocation() {
return new Partitioner<ConstraintLocation, MetaConstraint<?>>() {
@Override
public ConstraintLocation getPartition(MetaConstraint<?> constraint) {
return constraint.getLocation();
}
};
}
}