Add a DataModel as a central way to hold DAOs

Author: technicalguru

src/TgDatabase/DataModel.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace TgDatabase;
+
+/**
+ * A simple class to keep all DAOs in one place
+ *
+ * @author ralph
+ *        
+ */
+class DataModel {
+
+    private $database;
+
+    private $models;
+
+    /**
+     * Constructor.
+     * @param Database $database - the database instance
+     */
+    public function __construct($database) {
+        $this->database = $database;
+        $this->models = array();
+        $this->init($database);
+    }
+
+    /**
+     * Initializes all DAOs.
+     * <p>This method does nothing. Descendants shall override here and create and register their DAOs.</p>
+     * @param Database $database - the database object
+     */
+    protected function init($database) {
+    }
+
+    /**
+     * Returns a DAO registered under a certain name.
+     * @param String name - name of model
+     * return DAO the DAO registered or NULL
+     */
+    public function get($name) {
+        return $this->models[$name];
+    }
+
+    /**
+     * Returns the database object.
+     * @return Database the database object.
+     */
+    public function getDatabase() {
+        return $this->database;
+    }
+
+    /**
+     * Registers a DAO under a name.
+     * @param string $name - the name of the model
+     * @param DAO $dao - the DAO to be registered
+     */
+    public function register($name, $dao) {
+        $this->models[$name] = $dao;
+    }
+}
+