First Local Commit - After Clean up.

Signed-off-by: Rick Hays <rhays@haysgang.com>

system/Database/ConnectionInterface.php

@@ -0,0 +1,225 @@
+<?php
+
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 British Columbia Institute of Technology
+ * Copyright (c) 2019 CodeIgniter Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ */
+
+namespace CodeIgniter\Database;
+
+/**
+ * Interface ConnectionInterface
+ *
+ * @package CodeIgniter\Database
+ */
+interface ConnectionInterface
+{
+
+	/**
+	 * Initializes the database connection/settings.
+	 *
+	 * @return mixed
+	 */
+	public function initialize();
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Connect to the database.
+	 *
+	 * @param  boolean $persistent
+	 * @return mixed
+	 */
+	public function connect(bool $persistent = false);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Create a persistent database connection.
+	 *
+	 * @return mixed
+	 */
+	public function persistentConnect();
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Keep or establish the connection if no queries have been sent for
+	 * a length of time exceeding the server's idle timeout.
+	 *
+	 * @return mixed
+	 */
+	public function reconnect();
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the actual connection object. If both a 'read' and 'write'
+	 * connection has been specified, you can pass either term in to
+	 * get that connection. If you pass either alias in and only a single
+	 * connection is present, it must return the sole connection.
+	 *
+	 * @param string|null $alias
+	 *
+	 * @return mixed
+	 */
+	public function getConnection(string $alias = null);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Select a specific database table to use.
+	 *
+	 * @param string $databaseName
+	 *
+	 * @return mixed
+	 */
+	public function setDatabase(string $databaseName);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the name of the current database being used.
+	 *
+	 * @return string
+	 */
+	public function getDatabase(): string;
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the last error encountered by this connection.
+	 *
+	 * @return mixed
+	 */
+	public function getError();
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * The name of the platform in use (MySQLi, mssql, etc)
+	 *
+	 * @return string
+	 */
+	public function getPlatform(): string;
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns a string containing the version of the database being used.
+	 *
+	 * @return string
+	 */
+	public function getVersion(): string;
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Orchestrates a query against the database. Queries must use
+	 * Database\Statement objects to store the query and build it.
+	 * This method works with the cache.
+	 *
+	 * Should automatically handle different connections for read/write
+	 * queries if needed.
+	 *
+	 * @param string $sql
+	 * @param mixed  ...$binds
+	 *
+	 * @return mixed
+	 */
+	public function query(string $sql, $binds = null);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Performs a basic query against the database. No binding or caching
+	 * is performed, nor are transactions handled. Simply takes a raw
+	 * query string and returns the database-specific result id.
+	 *
+	 * @param string $sql
+	 *
+	 * @return mixed
+	 */
+	public function simpleQuery(string $sql);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns an instance of the query builder for this connection.
+	 *
+	 * @param string|array $tableName Table name.
+	 *
+	 * @return BaseBuilder Builder.
+	 */
+	public function table($tableName);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the last query's statement object.
+	 *
+	 * @return mixed
+	 */
+	public function getLastQuery();
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * "Smart" Escaping
+	 *
+	 * Escapes data based on type.
+	 * Sets boolean and null types.
+	 *
+	 * @param mixed $str
+	 *
+	 * @return mixed
+	 */
+	public function escape($str);
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Allows for custom calls to the database engine that are not
+	 * supported through our database layer.
+	 *
+	 * @param string $functionName
+	 * @param array  ...$params
+	 *
+	 * @return mixed
+	 */
+	public function callFunction(string $functionName, ...$params);
+
+	//--------------------------------------------------------------------
+}