| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.jackrabbit.oak.security.user; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.Iterators; |
| import org.apache.jackrabbit.api.security.user.Authorizable; |
| import org.apache.jackrabbit.oak.api.Tree; |
| import org.apache.jackrabbit.oak.commons.LongUtils; |
| import org.apache.jackrabbit.oak.spi.security.user.AuthorizableType; |
| import org.jetbrains.annotations.NotNull; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.jcr.RangeIterator; |
| import javax.jcr.RepositoryException; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.function.Predicate; |
| |
| /** |
| * AuthorizableIterator... |
| */ |
| final class AuthorizableIterator implements Iterator<Authorizable> { |
| |
| private static final Logger log = LoggerFactory.getLogger(AuthorizableIterator.class); |
| |
| private final Iterator<? extends Authorizable> authorizables; |
| private final long size; |
| private final Set<String> servedIds; |
| |
| @NotNull |
| static AuthorizableIterator create(@NotNull Iterator<Tree> authorizableTrees, |
| @NotNull UserManagerImpl userManager, |
| @NotNull AuthorizableType authorizableType) { |
| Iterator<Authorizable> it = Iterators.transform(authorizableTrees, new TreeToAuthorizable(userManager, authorizableType)); |
| long size = getSize(authorizableTrees); |
| return new AuthorizableIterator(it, size, false); |
| } |
| |
| @NotNull |
| static AuthorizableIterator create(boolean filterDuplicates, @NotNull Iterator<? extends Authorizable> it1) { |
| long size = getSize(it1); |
| return new AuthorizableIterator(it1, size, filterDuplicates); |
| } |
| |
| @NotNull |
| static AuthorizableIterator create(boolean filterDuplicates, @NotNull Iterator<? extends Authorizable> it1, @NotNull Iterator<? extends Authorizable> it2) { |
| long size = 0; |
| for (Iterator<?> it : new Iterator[] {it1, it2}) { |
| long l = getSize(it); |
| if (l == -1) { |
| size = -1; |
| break; |
| } else { |
| size = LongUtils.safeAdd(size, l); |
| } |
| } |
| return new AuthorizableIterator(Iterators.concat(it1, it2), size, filterDuplicates); |
| } |
| |
| private AuthorizableIterator(Iterator<? extends Authorizable> authorizables, long size, boolean filterDuplicates) { |
| if (filterDuplicates) { |
| this.servedIds = new HashSet<>(); |
| this.authorizables = Iterators.filter(authorizables, authorizable -> { |
| if (authorizable == null) { |
| return false; |
| } |
| String id = Utils.getIdOrNull(authorizable); |
| return id != null && servedIds.add(id); |
| }); |
| } else { |
| this.servedIds = null; |
| this.authorizables = Iterators.filter(authorizables, Objects::nonNull); |
| } |
| this.size = size; |
| } |
| |
| //-----------------------------------------------------------< Iterator >--- |
| @Override |
| public boolean hasNext() { |
| return authorizables.hasNext(); |
| } |
| |
| @Override |
| public Authorizable next() { |
| return authorizables.next(); |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| //-------------------------------------------------------------------------- |
| long getSize() { |
| return size; |
| } |
| |
| //-------------------------------------------------------------------------- |
| |
| private static long getSize(Iterator<?> it) { |
| if (it instanceof RangeIterator) { |
| return ((RangeIterator) it).getSize(); |
| } else if (it instanceof AuthorizableIterator) { |
| return ((AuthorizableIterator) it).getSize(); |
| } else if (!it.hasNext()) { |
| return 0; |
| } else { |
| return -1; |
| } |
| } |
| |
| private static class TreeToAuthorizable implements Function<Tree, Authorizable> { |
| |
| private final UserManagerImpl userManager; |
| private final Predicate<Authorizable> predicate; |
| |
| TreeToAuthorizable(UserManagerImpl userManager, AuthorizableType type) { |
| this.userManager = userManager; |
| this.predicate = new AuthorizableTypePredicate(type); |
| } |
| |
| @Override |
| public Authorizable apply(Tree tree) { |
| try { |
| Authorizable a = userManager.getAuthorizable(tree); |
| if (predicate.test(a)) { |
| return a; |
| } |
| } catch (RepositoryException e) { |
| log.debug("Failed to access authorizable {}", tree.getPath()); |
| } |
| return null; |
| } |
| } |
| |
| private static class AuthorizableTypePredicate implements Predicate<Authorizable> { |
| |
| private final AuthorizableType authorizableType; |
| |
| AuthorizableTypePredicate(@NotNull AuthorizableType authorizableType) { |
| this.authorizableType = authorizableType; |
| } |
| |
| @Override |
| public boolean test(Authorizable authorizable) { |
| return authorizableType.isType(authorizable); |
| } |
| } |
| } |