Added the functionality to execute and parse commands.

	* CommandParser can parse input strings to RequestCommand.
	* CommandQueue will execute all ICommands in a queue.
	* TODO: StreamCommands, database implementation.
	* RequestCommand writes into database.txt

1 files changed, 39 insertions, 0 deletions

diff --git a/src/main/CommandQueue.java b/src/main/CommandQueue.java
new file mode 100644
index 0000000..b3fde3e
--- /dev/null
+++ b/src/main/CommandQueue.java
@@ -0,0 +1,39 @@
+package main;
+
+import java.util.LinkedList;
+import java.util.Queue;
+
+/**
+ * The queue of commands to be executed every step.
+ *
+ * @author Maurice Laveaux
+ */
+public class CommandQueue {
+
+    // the list of commands executed in this order.
+    private final Queue<ICommand> m_commands;
+
+    public CommandQueue() {
+        m_commands = new LinkedList();
+    }
+
+    /**
+     * Add another command to the last position in the queue.
+     *
+     * @param command Any command that can be executed.
+     */
+    public void add(ICommand command) {
+        m_commands.offer(command);
+    }
+
+    /**
+     * Execute every command that is in the queue.
+     */
+    public void executeAll() {
+        while (!m_commands.isEmpty()) {
+            ICommand command = m_commands.poll();
+
+            command.execute();
+        }
+    }
+}