org.hibernate.validator.internal.engine.groups.Sequence Maven / Gradle / Ivy
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* Copyright 2012, 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.engine.groups;
import java.util.List;
import javax.validation.GroupSequence;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
import static org.hibernate.validator.internal.util.CollectionHelper.newArrayList;
/**
* Models a group sequence.
*
* @author Hardy Ferentschik
*/
public class Sequence {
private static final Log log = LoggerFactory.make();
private final Class sequence;
private List groups;
private boolean inheritedGroupsExpanded = false;
public Sequence(Class sequence, List groups) {
this.groups = groups;
this.sequence = sequence;
}
public List getComposingGroups() {
return groups;
}
public Class getDefiningClass() {
return sequence;
}
public void expandInheritedGroups() {
if ( inheritedGroupsExpanded ) {
return;
}
List expandedGroups = newArrayList();
for ( Group group : groups ) {
expandedGroups.add( group );
addInheritedGroups( group, expandedGroups );
}
groups = expandedGroups;
inheritedGroupsExpanded = true;
}
@Override
public boolean equals(Object o) {
if ( this == o ) {
return true;
}
if ( o == null || getClass() != o.getClass() ) {
return false;
}
Sequence sequence1 = (Sequence) o;
if ( groups != null ? !groups.equals( sequence1.groups ) : sequence1.groups != null ) {
return false;
}
if ( sequence != null ? !sequence.equals( sequence1.sequence ) : sequence1.sequence != null ) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = sequence != null ? sequence.hashCode() : 0;
result = 31 * result + ( groups != null ? groups.hashCode() : 0 );
return result;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append( "Sequence" );
sb.append( "{sequence=" ).append( sequence );
sb.append( ", groups=" ).append( groups );
sb.append( '}' );
return sb.toString();
}
/**
* Recursively add inherited (groups defined on superclasses).
*
* @param group the group for which the inherited groups need to be added to {@code expandedGroups}
* @param expandedGroups The list into which to add all groups
*/
private void addInheritedGroups(Group group, List expandedGroups) {
for ( Class inheritedGroup : group.getDefiningClass().getInterfaces() ) {
if ( isGroupSequence( inheritedGroup ) ) {
throw log.getSequenceDefinitionsNotAllowedException();
}
Group g = new Group( inheritedGroup );
expandedGroups.add( g );
addInheritedGroups( g, expandedGroups );
}
}
private boolean isGroupSequence(Class clazz) {
return clazz.getAnnotation( GroupSequence.class ) != null;
}
}