Hibernate example source code file (ExclusiveAnnotationFilter.java)

This example Hibernate source code file (ExclusiveAnnotationFilter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

annotationinstance, attribute, dotname, dotname, exclusiveannotationfilter, exclusiveannotationfilter, exclusivegroup, exclusivegroup, iterator, list, list, override, set, type, util

The Hibernate ExclusiveAnnotationFilter.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc..
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.metamodel.source.annotations.xml.filter;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.DotName;

import org.hibernate.metamodel.source.annotations.xml.mocker.MockHelper;

/**
 * @author Strong Liu
 */
class ExclusiveAnnotationFilter extends AbstractAnnotationFilter {

	public static ExclusiveAnnotationFilter INSTANCE = new ExclusiveAnnotationFilter();
	private DotName[] targetNames;
	private List<ExclusiveGroup> exclusiveGroupList;

	private ExclusiveAnnotationFilter() {
		this.exclusiveGroupList = getExclusiveGroupList();
		Set<DotName> names = new HashSet();
		for ( ExclusiveGroup group : exclusiveGroupList ) {
			names.addAll( group.getNames() );
		}
		targetNames = names.toArray( new DotName[names.size()] );
	}

	private List<ExclusiveGroup> getExclusiveGroupList() {
		if ( exclusiveGroupList == null ) {
			exclusiveGroupList = new ArrayList<ExclusiveGroup>();
			ExclusiveGroup group = new ExclusiveGroup();
			group.add( ENTITY );
			group.add( MAPPED_SUPERCLASS );
			group.add( EMBEDDABLE );
			group.scope = Scope.TYPE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( SECONDARY_TABLES );
			group.add( SECONDARY_TABLE );
			group.scope = Scope.TYPE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( PRIMARY_KEY_JOIN_COLUMNS );
			group.add( PRIMARY_KEY_JOIN_COLUMN );
			group.scope = Scope.ATTRIBUTE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( SQL_RESULT_SET_MAPPING );
			group.add( SQL_RESULT_SET_MAPPINGS );
			group.scope = Scope.TYPE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( NAMED_NATIVE_QUERY );
			group.add( NAMED_NATIVE_QUERIES );
			group.scope = Scope.TYPE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( NAMED_QUERY );
			group.add( NAMED_QUERIES );
			group.scope = Scope.TYPE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( ATTRIBUTE_OVERRIDES );
			group.add( ATTRIBUTE_OVERRIDE );
			group.scope = Scope.ATTRIBUTE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( ASSOCIATION_OVERRIDE );
			group.add( ASSOCIATION_OVERRIDES );
			group.scope = Scope.ATTRIBUTE;
			exclusiveGroupList.add( group );

			group = new ExclusiveGroup();
			group.add( MAP_KEY_JOIN_COLUMN );
			group.add( MAP_KEY_JOIN_COLUMNS );
			group.scope = Scope.ATTRIBUTE;
			exclusiveGroupList.add( group );

		}
		return exclusiveGroupList;
	}

	@Override
	protected void overrideIndexedAnnotationMap(DotName annName, AnnotationInstance annotationInstance, Map<DotName, List map) {
		ExclusiveGroup group = getExclusiveGroup( annName );
		if ( group == null ) {
			return;
		}
		AnnotationTarget target = annotationInstance.target();
		for ( DotName entityAnnName : group ) {
			if ( !map.containsKey( entityAnnName ) ) {
				continue;
			}
			switch ( group.scope ) {
				case TYPE:
					map.put( entityAnnName, Collections.<AnnotationInstance>emptyList() );
					break;
				case ATTRIBUTE:
					List<AnnotationInstance> indexedAnnotationInstanceList = map.get( entityAnnName );
					Iterator<AnnotationInstance> iter = indexedAnnotationInstanceList.iterator();
					while ( iter.hasNext() ) {
						AnnotationInstance ann = iter.next();
						if ( MockHelper.targetEquals( target, ann.target() ) ) {
							iter.remove();
						}
					}
					break;
			}
		}
	}

	@Override
	protected DotName[] targetAnnotation() {
		return targetNames;
	}

	private ExclusiveGroup getExclusiveGroup(DotName annName) {
		for ( ExclusiveGroup group : exclusiveGroupList ) {
			if ( group.contains( annName ) ) {
				return group;
			}
		}
		return null;
	}

	enum Scope {TYPE, ATTRIBUTE}

	private class ExclusiveGroup implements Iterable<DotName> {
		public Set<DotName> getNames() {
			return names;
		}

		private Set<DotName> names = new HashSet();
		Scope scope = Scope.ATTRIBUTE;

		@Override
		public Iterator iterator() {
			return names.iterator();
		}

		boolean contains(DotName name) {
			return names.contains( name );
		}

		void add(DotName name) {
			names.add( name );
		}
	}
}