Fix write proxy initialization

client/src/main/java/envoy/client/data/Cache.java

@@ -51,12 +51,6 @@ public final class Cache<T> implements Consumer<T>, Serializable {
 	 */
 	public void setProcessor(Consumer<T> processor) { this.processor = processor; }
 
-	/**
-	 * @return the processor
-	 * @since Envoy Client v0.2-beta
-	 */
-	public Consumer<T> getProcessor() { return processor; }
-
 	/**
 	 * Relays all cached elements to the processor.
 	 *

client/src/main/java/envoy/client/data/Context.java

@@ -18,24 +18,33 @@ import envoy.client.ui.SceneContext;
  */
 public class Context {
 
+	private WriteProxy		writeProxy;
+	private LocalDB			localDB;
+	private Stage			stage;
+	private SceneContext	sceneContext;
+
 	private final Client client = new Client();
 
-	private WriteProxy writeProxy;
-
-	private LocalDB localDB;
-
-	private Stage stage;
-
-	private SceneContext sceneContext;
-
 	private static final Context instance = new Context();
 
+	private Context() {}
+
 	/**
 	 * @return the instance of {@code Context} used throughout Envoy
 	 * @since Envoy Client v0.2-beta
 	 */
 	public static Context getInstance() { return instance; }
 
+	/**
+	 * Initializes the write proxy given that {@code localDB} is initialized.
+	 *
+	 * @since Envoy Client v0.2-beta
+	 */
+	public void initWriteProxy() {
+		if (localDB == null) throw new IllegalStateException("The LocalDB has to be initialized!");
+		writeProxy = new WriteProxy(client, localDB);
+	}
+
 	/**
 	 * @return the localDB
 	 * @since Envoy Client v0.2-beta
@@ -81,14 +90,6 @@ public class Context {
 	 */
 	public Stage getStage() { return stage; }
 
-	private Context() {}
-
-	/**
-	 * @param writeProxy the writeProxy to set
-	 * @since Envoy Client v0.2-beta
-	 */
-	public void setWriteProxy(WriteProxy writeProxy) { this.writeProxy = writeProxy; }
-
 	/**
 	 * @param stage the stage to set
 	 * @since Envoy Client v0.2-beta