org.hibernate.validator.internal.engine.groups.Sequence Maven / Gradle / Ivy
/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or .
*/
package org.hibernate.validator.internal.engine.groups;
import java.lang.invoke.MethodHandles;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.validation.GroupSequence;
import javax.validation.groups.Default;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
/**
* Models a group sequence.
*
* @author Hardy Ferentschik
*/
public class Sequence implements Iterable {
/**
* An "anonymous" sequence with just a single contained element, {@code Default.class}.
*/
public static Sequence DEFAULT = new Sequence();
private static final Log LOG = LoggerFactory.make( MethodHandles.lookup() );
private final Class sequence;
private List groups;
private List expandedGroups;
private Sequence() {
this.sequence = Default.class;
this.groups = Collections.singletonList( Group.DEFAULT_GROUP );
this.expandedGroups = Collections.singletonList(
new GroupWithInheritance( Collections.singleton( Group.DEFAULT_GROUP ) )
);
}
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 ( expandedGroups != null ) {
return;
}
expandedGroups = new ArrayList();
ArrayList tmpGroups = new ArrayList();
for ( Group group : groups ) {
HashSet groupsOfGroup = new HashSet();
groupsOfGroup.add( group );
addInheritedGroups( group, groupsOfGroup );
expandedGroups.add( new GroupWithInheritance( groupsOfGroup ) );
tmpGroups.addAll( groupsOfGroup );
}
groups = tmpGroups;
}
@Override
public Iterator iterator() {
return expandedGroups.iterator();
}
@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, Set 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;
}
}