Add the named query executor

Author: na2axl

src/LightQL/Entities/Query.php

@@ -0,0 +1,132 @@
+<?php
+
+/**
+ * LightQL - The lightweight PHP ORM
+ *
+ * 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.
+ *
+ * @category  Library
+ * @package   LightQL
+ * @author    Axel Nana <ax.lnana@outlook.com>
+ * @copyright 2018 Aliens Group, Inc.
+ * @license   MIT <https://github.com/ElementaryFramework/LightQL/blob/master/LICENSE>
+ * @version   GIT: 0.0.1
+ * @link      http://lightql.na2axl.tk
+ */
+
+namespace ElementaryFramework\LightQL\Entities;
+
+use ElementaryFramework\LightQL\Exceptions\QueryException;
+
+/**
+ * Query
+ *
+ * Manage, run and get results from named queries.
+ *
+ * @category Sessions
+ * @package  LightQL
+ * @author   Nana Axel <ax.lnana@outlook.com>
+ * @link     http://lightql.na2axl.tk/docs/api/LightQL/Entities/Query
+ */
+class Query
+{
+    /**
+     * @var EntityManager
+     */
+    private $_entityManager;
+
+    /**
+     * @var \ReflectionClass
+     */
+    private $_entityReflection;
+
+    /**
+     * @var string
+     */
+    private $_namedQuery;
+
+    /**
+     * @var array
+     */
+    private $_parameters = array();
+
+    /**
+     * @var \PDOStatement
+     */
+    private $_query = null;
+
+    /**
+     * Query constructor.
+     *
+     * @param EntityManager $manager
+     */
+    public function __construct(EntityManager $manager)
+    {
+        $this->_entityManager = $manager;
+    }
+
+    public function setEntity(\ReflectionClass $entity)
+    {
+        $this->_entityReflection = $entity;
+    }
+
+    public function setQuery(string $query)
+    {
+        $this->_namedQuery = $query;
+    }
+
+    public function setParam(string $name, $value)
+    {
+        $this->_parameters[$name] = $value;
+    }
+
+    public function run(): bool
+    {
+        try {
+            $this->_query = $this->_entityManager->getLightQL()->prepare($this->_namedQuery);
+
+            foreach ($this->_parameters as $name => $value) {
+                $this->_query->bindValue($name, $value);
+            }
+
+            return $this->_query->execute();
+        } catch (\Exception $e) {
+            throw new QueryException($e->getMessage());
+        }
+    }
+
+    public function getResults(): array
+    {
+        if ($this->_query === null) {
+            throw new QueryException("Cannot get results, have you ran the query?");
+        }
+
+        $results = array_map(function ($item) {
+            return $this->_entityReflection->newInstance($item);
+        }, $this->_query->fetchAll());
+
+        return $results;
+    }
+
+    public function getFirstResult(): IEntity
+    {
+        $results = $this->getResults();
+        return $results[0];
+    }
+}