From 61ceb8a58ea72d4c07ff0b2f669d5f84b75700ec Mon Sep 17 00:00:00 2001
From: Alexander Kriegisch <Alexander@Kriegisch.name>
Date: Thu, 4 Jan 2024 10:12:59 +0700
Subject: Move docs examples directory two levels up

Now, the location more closely resembles where it is on the website.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
---
 docs/examples/telecom/Call.java | 97 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 docs/examples/telecom/Call.java

(limited to 'docs/examples/telecom/Call.java')

diff --git a/docs/examples/telecom/Call.java b/docs/examples/telecom/Call.java
new file mode 100644
index 000000000..3d3489e86
--- /dev/null
+++ b/docs/examples/telecom/Call.java
@@ -0,0 +1,97 @@
+/*
+
+Copyright (c) Xerox Corporation 1998-2002.  All rights reserved.
+
+Use and copying of this software and preparation of derivative works based
+upon this software are permitted.  Any distribution of this software or
+derivative works must comply with all applicable United States export control
+laws.
+
+This software is made available AS IS, and Xerox Corporation makes no warranty
+about the software, its performance or its conformity to any specification.
+
+|<---            this code is formatted to fit into 80 columns             --->|
+|<---            this code is formatted to fit into 80 columns             --->|
+|<---            this code is formatted to fit into 80 columns             --->|
+
+*/
+package telecom;
+import java.util.Vector;
+import java.util.Enumeration;
+
+/**
+ * A call supports the process of a customer trying to
+ * connect to others.
+ */
+public class Call {
+
+    private Customer caller, receiver;
+    private Vector connections = new Vector();
+
+    /**
+     * Create a new call connecting caller to receiver
+     * with a new connection. This should really only be
+     * called by Customer.call(..)
+     */
+    public Call(Customer caller, Customer receiver) {
+        this.caller = caller;
+        this.receiver = receiver;
+        Connection c;
+        if (receiver.localTo(caller)) {
+	    c = new Local(caller, receiver);
+        } else {
+	    c = new LongDistance(caller, receiver);
+        }
+        connections.addElement(c);
+    }
+
+    /**
+     * picking up a call completes the current connection
+     * (this means that you shouldnt merge calls until
+     * they are completed)
+     */
+    public void pickup() {
+    	Connection connection = (Connection)connections.lastElement();
+        connection.complete();
+    }
+
+
+    /**
+     * Is the call in a connected state?
+     */
+    public boolean isConnected(){
+	return ((Connection)connections.lastElement()).getState()
+            == Connection.COMPLETE;
+    }
+
+    /**
+     * hanging up a call drops the connection
+     */
+    public void hangup(Customer c) {
+        for(Enumeration e = connections.elements(); e.hasMoreElements();) {
+	    ((Connection)e.nextElement()).drop();
+        }
+    }
+
+    /**
+     * is Customer c one of the customers in this call?
+     */
+    public boolean includes(Customer c){
+	boolean result = false;
+	for(Enumeration e = connections.elements(); e.hasMoreElements();) {
+	    result = result || ((Connection)e.nextElement()).connects(c);
+	}
+	return result;
+    }
+
+    /**
+     * Merge all connections from call 'other' into 'this'
+     */
+    public void merge(Call other){
+	for(Enumeration e = other.connections.elements(); e.hasMoreElements();){
+	    Connection conn = (Connection)e.nextElement();
+	    other.connections.removeElement(conn);
+	    connections.addElement(conn);
+	}
+    }
+}
-- 
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