/*
* IntersectionGroup.java
*
* Copyright (c) 2013, Instituto Superior Técnico. All rights reserved.
*
* This file is part of bennu-core.
*
* bennu-core is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
*
* bennu-core 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with bennu-core. If not, see
* <http://www.gnu.org/licenses/>.
*/
package org.fenixedu.bennu.core.groups;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.fenixedu.bennu.core.domain.Bennu;
import org.fenixedu.bennu.core.domain.User;
import org.fenixedu.bennu.core.domain.groups.PersistentGroup;
import org.fenixedu.bennu.core.domain.groups.PersistentIntersectionGroup;
import org.fenixedu.bennu.core.i18n.BundleUtil;
import org.joda.time.DateTime;
import com.google.common.collect.ImmutableSet;
/**
* Intersection composition group.
*
* @author Pedro Santos (pedro.miguel.santos@tecnico.ulisboa.pt)
* @see Group
*/
final class IntersectionGroup extends Group {
private static final long serialVersionUID = -6302479291671819210L;
private final ImmutableSet<Group> children;
IntersectionGroup(ImmutableSet<Group> children) {
super();
this.children = children;
}
@Override
public String getPresentationName() {
String and = " " + BundleUtil.getString("resources.BennuResources", "label.bennu.and") + " ";
return children.stream().map(g -> g.getPresentationName()).collect(Collectors.joining(and));
}
@Override
public String getExpression() {
return children.stream().map(Group::compositeExpression).collect(Collectors.joining(" & "));
}
@Override
public PersistentGroup toPersistentGroup() {
return PersistentIntersectionGroup.getInstance(children.stream().map(g -> g.toPersistentGroup())
.collect(Collectors.toSet()));
}
@Override
public Stream<User> getMembers() {
return Bennu.getInstance().getUserSet().stream().filter(user -> isMember(user));
}
@Override
public boolean isMember(final User user) {
if (children.isEmpty()) {
return false;
}
for (final Group group : children) {
if (!group.isMember(user)) {
return false;
}
}
return true;
}
@Override
public Stream<User> getMembers(DateTime when) {
return Bennu.getInstance().getUserSet().stream().filter(user -> isMember(user, when));
}
@Override
public boolean isMember(User user, DateTime when) {
if (children.isEmpty()) {
return false;
}
for (final Group group : children) {
if (!group.isMember(user, when)) {
return false;
}
}
return true;
}
@Override
public Group and(Group group) {
if (this.equals(group)) {
return this;
}
if (group instanceof NobodyGroup) {
return Group.nobody();
}
if (group instanceof AnyoneGroup) {
return this;
}
if (group instanceof IntersectionGroup) {
return new IntersectionGroup(ImmutableSet.<Group> builder().addAll(children)
.addAll(((IntersectionGroup) group).children).build());
}
return new IntersectionGroup(ImmutableSet.<Group> builder().addAll(children).add(group).build());
}
@Override
public boolean equals(Object object) {
if (object instanceof IntersectionGroup) {
return children.equals(((IntersectionGroup) object).children);
}
return false;
}
@Override
public int hashCode() {
return children.hashCode();
}
}