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Posted to commits@guacamole.apache.org by jm...@apache.org on 2016/07/17 22:28:44 UTC
[16/19] incubator-guacamole-client git commit: GUACAMOLE-5: Add
DirectoryView object,
providing a Directory interface around a restricted subset of objects within
another existing Directory.
GUACAMOLE-5: Add DirectoryView object, providing a Directory interface around a restricted subset of objects within another existing Directory.
Project: http://git-wip-us.apache.org/repos/asf/incubator-guacamole-client/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-guacamole-client/commit/bb36045f
Tree: http://git-wip-us.apache.org/repos/asf/incubator-guacamole-client/tree/bb36045f
Diff: http://git-wip-us.apache.org/repos/asf/incubator-guacamole-client/diff/bb36045f
Branch: refs/heads/master
Commit: bb36045ff8df506d890311aefacdd6a395434a98
Parents: 62dcd9e
Author: Michael Jumper <mj...@apache.org>
Authored: Sat Jul 16 00:31:23 2016 -0700
Committer: Michael Jumper <mj...@apache.org>
Committed: Sat Jul 16 11:42:48 2016 -0700
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.../guacamole/rest/directory/DirectoryView.java | 120 +++++++++++++++++++
1 file changed, 120 insertions(+)
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http://git-wip-us.apache.org/repos/asf/incubator-guacamole-client/blob/bb36045f/guacamole/src/main/java/org/apache/guacamole/rest/directory/DirectoryView.java
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diff --git a/guacamole/src/main/java/org/apache/guacamole/rest/directory/DirectoryView.java b/guacamole/src/main/java/org/apache/guacamole/rest/directory/DirectoryView.java
new file mode 100644
index 0000000..aee18f3
--- /dev/null
+++ b/guacamole/src/main/java/org/apache/guacamole/rest/directory/DirectoryView.java
@@ -0,0 +1,120 @@
+/*
+ * 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.guacamole.rest.directory;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Set;
+import org.apache.guacamole.GuacamoleException;
+import org.apache.guacamole.GuacamoleUnsupportedException;
+import org.apache.guacamole.net.auth.Directory;
+import org.apache.guacamole.net.auth.Identifiable;
+
+/**
+ * Directory implementation which represents a read-only subset of another
+ * existing Directory. Access is provided only to a limited set of objects,
+ * determined by the set of identifiers provided when the DirectoryView is
+ * created.
+ *
+ * @author Michael Jumper
+ * @param <ObjectType>
+ * The type of objects accessible through this DirectoryView.
+ */
+public class DirectoryView<ObjectType extends Identifiable>
+ implements Directory<ObjectType> {
+
+ /**
+ * The Directory from which the given set of objects will be retrieved.
+ */
+ private final Directory<ObjectType> directory;
+
+ /**
+ * The set of identifiers representing the restricted set of objects that
+ * this DirectoryView should provide access to.
+ */
+ private final Set<String> identifiers;
+
+ /**
+ * Creates a new DirectoryView which provides access to a read-only subset
+ * of the objects in the given Directory. Only objects whose identifiers
+ * are within the provided set will be accessible.
+ *
+ * @param directory
+ * The Directory of which this DirectoryView represents a subset.
+ *
+ * @param identifiers
+ * The identifiers of all objects which should be accessible through
+ * this DirectoryView. Objects which do not have identifiers within
+ * the provided set will be inaccessible.
+ */
+ public DirectoryView(Directory<ObjectType> directory,
+ Set<String> identifiers) {
+ this.directory = directory;
+ this.identifiers = identifiers;
+ }
+
+ @Override
+ public ObjectType get(String identifier) throws GuacamoleException {
+
+ // Attempt to retrieve the requested object ONLY if it's within the
+ // originally-specified subset
+ if (!identifiers.contains(identifier))
+ return null;
+
+ // Delegate to underlying directory
+ return directory.get(identifier);
+
+ }
+
+ @Override
+ public Collection<ObjectType> getAll(Collection<String> identifiers)
+ throws GuacamoleException {
+
+ // Reduce requested identifiers to only those which occur within the
+ // originally-specified subset
+ identifiers = new ArrayList<String>(identifiers);
+ identifiers.retainAll(this.identifiers);
+
+ // Delegate to underlying directory
+ return directory.getAll(identifiers);
+
+ }
+
+ @Override
+ public Set<String> getIdentifiers() throws GuacamoleException {
+ return identifiers;
+ }
+
+ @Override
+ public void add(ObjectType object) throws GuacamoleException {
+ throw new GuacamoleUnsupportedException("Directory view is read-only");
+ }
+
+ @Override
+ public void update(ObjectType object) throws GuacamoleException {
+ throw new GuacamoleUnsupportedException("Directory view is read-only");
+ }
+
+ @Override
+ public void remove(String identifier) throws GuacamoleException {
+ throw new GuacamoleUnsupportedException("Directory view is read-only");
+ }
+
+}