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/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.server.deployment.annotation;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.Index;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* Composite annotation index. Represents an annotation index for an entire deployment.
*
* @author John Bailey
*/
public class CompositeIndex {
final Collection indexes;
public CompositeIndex(final Collection indexes) {
this.indexes = indexes;
}
public CompositeIndex(final CompositeIndex... indexes) {
this.indexes = new ArrayList();
for(CompositeIndex index : indexes) {
this.indexes.addAll(index.indexes);
}
}
/**
* @see {@link Index#getAnnotations(org.jboss.jandex.DotName)}
*/
public List getAnnotations(final DotName annotationName) {
final List allInstances = new ArrayList();
for (Index index : indexes) {
final List list = index.getAnnotations(annotationName);
if (list != null) {
allInstances.addAll(list);
}
}
return Collections.unmodifiableList(allInstances);
}
/**
* @see {@link Index#getKnownDirectSubclasses(org.jboss.jandex.DotName)}
*/
public Set getKnownDirectSubclasses(final DotName className) {
final Set allKnown = new HashSet();
for (Index index : indexes) {
final List list = index.getKnownDirectSubclasses(className);
if (list != null) {
allKnown.addAll(list);
}
}
return Collections.unmodifiableSet(allKnown);
}
/**
* Returns all known subclasses of the given class, even non-direct sub classes. (i.e. it returns all known classes that are
* assignable to the given class);
*
* @param className The class
* @return All known subclasses
*/
public Set getAllKnownSubclasses(final DotName className) {
final Set allKnown = new HashSet();
final Set processedClasses = new HashSet();
getAllKnownSubClasses(className, allKnown, processedClasses);
return allKnown;
}
private void getAllKnownSubClasses(DotName className, Set allKnown, Set processedClasses) {
final Set subClassesToProcess = new HashSet();
subClassesToProcess.add(className);
while (!subClassesToProcess.isEmpty()) {
final Iterator toProcess = subClassesToProcess.iterator();
DotName name = toProcess.next();
toProcess.remove();
processedClasses.add(name);
getAllKnownSubClasses(name, allKnown, subClassesToProcess, processedClasses);
}
}
private void getAllKnownSubClasses(DotName name, Set allKnown, Set subClassesToProcess,
Set processedClasses) {
for (Index index : indexes) {
final List list = index.getKnownDirectSubclasses(name);
if (list != null) {
for (final ClassInfo clazz : list) {
final DotName className = clazz.name();
if (!processedClasses.contains(className)) {
allKnown.add(clazz);
subClassesToProcess.add(className);
}
}
}
}
}
/**
* @see {@link Index#getKnownDirectImplementors(DotName)}
*/
public Set getKnownDirectImplementors(final DotName className) {
final Set allKnown = new HashSet();
for (Index index : indexes) {
final List list = index.getKnownDirectImplementors(className);
if (list != null) {
allKnown.addAll(list);
}
}
return Collections.unmodifiableSet(allKnown);
}
/**
* Returns all known classes that implement the given interface, directly and indirectly. This will all return classes that
* implement sub interfaces of the interface, and sub classes of classes that implement the interface. (In short, it will
* return every class that is assignable to the interface that is found in the index)
*
* This will only return classes, not interfaces.
*
* @param interfaceName The interface
* @return All known implementors of the interface
*/
public Set getAllKnownImplementors(final DotName interfaceName) {
final Set allKnown = new HashSet();
final Set subInterfacesToProcess = new HashSet();
final Set processedClasses = new HashSet();
subInterfacesToProcess.add(interfaceName);
while (!subInterfacesToProcess.isEmpty()) {
final Iterator toProcess = subInterfacesToProcess.iterator();
DotName name = toProcess.next();
toProcess.remove();
processedClasses.add(name);
getKnownImplementors(name, allKnown, subInterfacesToProcess, processedClasses);
}
return allKnown;
}
private void getKnownImplementors(DotName name, Set allKnown, Set subInterfacesToProcess,
Set processedClasses) {
for (Index index : indexes) {
final List list = index.getKnownDirectImplementors(name);
if (list != null) {
for (final ClassInfo clazz : list) {
final DotName className = clazz.name();
if (!processedClasses.contains(className)) {
if (Modifier.isInterface(clazz.flags())) {
subInterfacesToProcess.add(className);
} else {
if (!allKnown.contains(clazz)) {
allKnown.add(clazz);
processedClasses.add(className);
getAllKnownSubClasses(className, allKnown, processedClasses);
}
}
}
}
}
}
}
/**
* @see {@link Index#getClassByName(org.jboss.jandex.DotName)}
*/
public ClassInfo getClassByName(final DotName className) {
for (Index index : indexes) {
final ClassInfo info = index.getClassByName(className);
if (info != null) {
return info;
}
}
return null;
}
/**
* @see {@link org.jboss.jandex.Index#getKnownClasses()}
*/
public Collection getKnownClasses() {
final List allKnown = new ArrayList();
for (Index index : indexes) {
final Collection list = index.getKnownClasses();
if (list != null) {
allKnown.addAll(list);
}
}
return Collections.unmodifiableCollection(allKnown);
}
public Collection getIndexes() {
return Collections.unmodifiableCollection(indexes);
}
}
