Support querying for sessions by user identifier

Fixes gh-7

samples/findbyusername/src/main/java/sample/session/SessionDetails.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2002-2015 the original author or authors.
+ *
+ * Licensed 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 sample.session;
+
+import java.io.Serializable;
+
+/**
+ * An example of how users can provide details about their session.
+ *
+ * @author Rob Winch
+ * @see SessionDetailsFilter
+ */
+// tag::class[]
+public class SessionDetails implements Serializable {
+	private String location;
+
+	private String accessType;
+
+	public String getLocation() {
+		return location;
+	}
+
+	public void setLocation(String location) {
+		this.location = location;
+	}
+
+	public String getAccessType() {
+		return accessType;
+	}
+
+	public void setAccessType(String accessType) {
+		this.accessType = accessType;
+	}
+
+	private static final long serialVersionUID = 8850489178248613501L;
+}
+// end::class[]