| /* |
| * 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.spi.mount; |
| |
| import com.google.common.collect.Lists; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import static java.util.Arrays.asList; |
| import static java.util.Collections.singletonList; |
| |
| /** |
| * Provides helper methods for creating {@link MountInfoProvider} instances. |
| * |
| */ |
| public final class Mounts { |
| |
| private Mounts() { |
| } |
| |
| private static final MountInfoProvider DEFAULT_PROVIDER = new MountInfoProvider() { |
| @Override |
| public Mount getMountByPath(String path) { |
| return DEFAULT_MOUNT; |
| } |
| |
| @Override |
| public Collection<Mount> getNonDefaultMounts() { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public Mount getMountByName(String name) { |
| return DEFAULT_MOUNT.getName().equals(name) ? DEFAULT_MOUNT : null; |
| } |
| |
| @Override |
| public boolean hasNonDefaultMounts() { |
| return false; |
| } |
| |
| @Override |
| public Collection<Mount> getMountsPlacedUnder(String path) { |
| return Collections.emptySet(); |
| } |
| |
| public Collection<Mount> getMountsPlacedDirectlyUnder(String path) { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public Mount getDefaultMount() { |
| return DEFAULT_MOUNT; |
| } |
| }; |
| |
| /** |
| * Default Mount info which indicates that no explicit mount is created for |
| * given path |
| */ |
| private static Mount DEFAULT_MOUNT = new DefaultMount(); |
| |
| static final class DefaultMount implements Mount { |
| |
| private final Collection<Mount> mounts; |
| |
| DefaultMount() { |
| this(Collections.<Mount> emptySet()); |
| } |
| |
| DefaultMount(Collection<Mount> mounts) { |
| this.mounts = mounts; |
| } |
| |
| @Override |
| public String getName() { |
| return "<default>"; |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return false; |
| } |
| |
| @Override |
| public boolean isDefault() { |
| return true; |
| } |
| |
| @Override |
| public String getPathFragmentName() { |
| return ""; |
| } |
| |
| @Override |
| public boolean isSupportFragment(String path) { |
| return false; |
| } |
| |
| @Override |
| public boolean isSupportFragmentUnder(String path) { |
| return false; |
| } |
| |
| @Override |
| public boolean isMounted(String path) { |
| for (Mount m : mounts) { |
| if (m.isMounted(path)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean isUnder(String path) { |
| for (Mount m : mounts) { |
| if (m.isMounted(path)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean isDirectlyUnder(String path) { |
| for (Mount m : mounts) { |
| if (m.isDirectlyUnder(path)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |
| |
| /** |
| * Returns a {@link MountInfoProvider} which is configured only with the default Mount |
| * |
| * @return the default MountInfoProvider |
| */ |
| public static MountInfoProvider defaultMountInfoProvider() { |
| return DEFAULT_PROVIDER; |
| } |
| |
| /** |
| * Creates a new Builder instance for configuring more complex mount setups |
| * |
| * @return a new builder instance |
| */ |
| public static Builder newBuilder(){ |
| return new Builder(); |
| } |
| |
| /** |
| * Provides a fluent API from creating {@link MountInfoProvider} instances |
| */ |
| public static final class Builder { |
| private final List<Mount> mounts = Lists.newArrayListWithCapacity(1); |
| |
| private Builder() { |
| } |
| |
| /** |
| * Adds a new read-write {@link Mount} with the specified name and paths |
| * |
| * @param name the name of the mount |
| * @param paths the paths handled by the mount |
| * @return this builder instance |
| */ |
| public Builder mount(String name, String... paths) { |
| mounts.add(new MountInfo(name, false, singletonList("/"), asList(paths))); |
| return this; |
| } |
| |
| /** |
| * Adds a new read-only Mount with the specified name and paths |
| * |
| * @param name the name of the mount |
| * @param paths the paths handled by the mount |
| * @return this builder instance |
| */ |
| public Builder readOnlyMount(String name, String... paths) { |
| mounts.add(new MountInfo(name, true, singletonList("/"), asList(paths))); |
| return this; |
| } |
| |
| /** |
| * Adds a new Mount instance with the specified parameters |
| * |
| * @param name the name of the mount |
| * @param readOnly true for read-only paths, false otherwise |
| * @param pathsSupportingFragments the paths supporting fragments, see {@link Mount#getPathFragmentName()} |
| * @param paths the paths handled by the mount |
| * @return this builder instance |
| */ |
| public Builder mount(String name, boolean readOnly, List<String> pathsSupportingFragments, List<String> paths) { |
| mounts.add(new MountInfo(name, readOnly, pathsSupportingFragments, paths)); |
| return this; |
| } |
| |
| /** |
| * Creates a new {@link MountInfoProvider} |
| * |
| * @return a newly-created MountInfoProvider |
| */ |
| public MountInfoProvider build() { |
| return new SimpleMountInfoProvider(mounts); |
| } |
| } |
| } |