Github user jmuehlner commented on a diff in the pull request:
https://github.com/apache/incubator-guacamole-client/pull/29#discussion_r71068836
--- Diff:
guacamole-ext/src/main/java/org/apache/guacamole/net/auth/AbstractIdentifiable.java
---
@@ -0,0 +1,75 @@
+/*
+ * 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.net.auth;
+
+
+/**
+ * Abstract implementation of Identifiable which provides equals() and
+ * hashCode() implementations which use the identifier to determine
equality.
+ * The identifier comparison is case-sensitive.
+ *
+ * @author Michael Jumper
+ */
+public abstract class AbstractIdentifiable implements Identifiable {
+
+ /**
+ * The unique string which identifies this object.
+ */
+ private String identifier;
+
+ @Override
+ public String getIdentifier() {
+ return identifier;
+ }
+
+ @Override
+ public void setIdentifier(String identifier) {
+ this.identifier = identifier;
+ }
+
+ @Override
+ public int hashCode() {
+
+ if (identifier == null)
+ return 0;
+
+ return identifier.hashCode();
+ }
+
+ @Override
+ public boolean equals(Object other) {
+
+ // Not equal if null or not a User
--- End diff --
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