We now store the uri data in a separate table (#5560)

* We now have a item-uri table

* Fixing line endings

* New item uri table

* Rescued ItemURI.php file

* Reverting some git problem

* Corrected the dbstructure file

* Updated database.sql / we now store content in the new id fields

src/Model/ItemURI.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * @file src/Model/ItemURI.php
+ */
+
+namespace Friendica\Model;
+
+use Friendica\BaseObject;
+use Friendica\Database\DBA;
+
+require_once 'boot.php';
+
+class ItemURI extends BaseObject
+{
+	/**
+	 * @brief Insert an item-uri record and return its id
+	 *
+	 * @param array $fields Item-uri fields
+	 *
+	 * @return integer item-uri id
+	 */
+	public static function insert($fields)
+	{
+		if (!DBA::exists('item-uri', ['uri' => $fields['uri']])) {
+			DBA::insert('item-uri', $fields, true);
+		}
+
+		$itemuri = DBA::selectFirst('item-uri', ['id'], ['uri' => $fields['uri']]);
+
+		if (!DBA::isResult($itemuri)) {
+			// This shouldn't happen
+			return null;
+		}
+
+		return $itemuri['id'];
+	}
+
+	/**
+	 * @brief Searched for an id of a given uri. Adds it, if not existing yet.
+	 *
+	 * @param string $uri
+	 *
+	 * @return integer item-uri id
+	 */
+	public static function getIdByURI($uri)
+	{
+		$itemuri = DBA::selectFirst('item-uri', ['id'], ['uri' => $uri]);
+
+		if (!DBA::isResult($itemuri)) {
+			return self::insert(['uri' => $uri]);
+		}
+
+		return $itemuri['id'];
+	}
+}