1 files changed, 178 insertions, 0 deletions
diff --git a/vendor/fguillot/picodb/lib/PicoDb/Driver/Mssql.php b/vendor/fguillot/picodb/lib/PicoDb/Driver/Mssql.php
new file mode 100644
index 00000000..83e75af2
--- /dev/null
+++ b/vendor/fguillot/picodb/lib/PicoDb/Driver/Mssql.php
@@ -0,0 +1,178 @@
+<?php
+
+namespace PicoDb\Driver;
+
+use PDO;
+
+/**
+ * Microsoft SQL Server Driver
+ *
+ * @package PicoDb\Driver
+ * @author  Algy Taylor <thomas.taylor@cmft.nhs.uk>
+ */
+class Mssql extends Base
+{
+    /**
+     * List of required settings options
+     *
+     * @access protected
+     * @var array
+     */
+    protected $requiredAttributes = array(
+        'hostname',
+        'username',
+        'password',
+        'database',
+    );
+
+    /**
+     * Table to store the schema version
+     *
+     * @access private
+     * @var array
+     */
+    private $schemaTable = 'schema_version';
+
+    /**
+     * Create a new PDO connection
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function createConnection(array $settings)
+    {
+        $dsn = 'sqlsrv:Server=' . $settings['hostname'] . ';Database=' . $settings['database'];
+
+        if (! empty($settings['port'])) {
+            $dsn .= ';port=' . $settings['port'];
+        }
+
+        $this->pdo = new PDO($dsn, $settings['username'], $settings['password']);
+
+        if (isset($settings['schema_table'])) {
+            $this->schemaTable = $settings['schema_table'];
+        }
+    }
+
+    /**
+     * Enable foreign keys
+     *
+     * @access public
+     */
+    public function enableForeignKeys()
+    {
+        $this->pdo->exec('EXEC sp_MSforeachtable @command1="ALTER TABLE ? CHECK CONSTRAINT ALL"; GO;');
+    }
+
+    /**
+     * Disable foreign keys
+     *
+     * @access public
+     */
+    public function disableForeignKeys()
+    {
+        $this->pdo->exec('EXEC sp_MSforeachtable @command1="ALTER TABLE ? NOCHECK CONSTRAINT ALL"; GO;');
+    }
+
+    /**
+     * Return true if the error code is a duplicate key
+     *
+     * @access public
+     * @param  integer  $code
+     * @return boolean
+     */
+    public function isDuplicateKeyError($code)
+    {
+        return $code == 2601;
+    }
+
+    /**
+     * Escape identifier
+     *
+     * https://msdn.microsoft.com/en-us/library/ms175874.aspx
+     *
+     * @access public
+     * @param  string  $identifier
+     * @return string
+     */
+    public function escape($identifier)
+    {
+        return '['.$identifier.']';
+    }
+
+    /**
+     * Get non standard operator
+     *
+     * @access public
+     * @param  string  $operator
+     * @return string
+     */
+    public function getOperator($operator)
+    {
+        if ($operator === 'LIKE' || $operator === 'ILIKE') {
+            return 'LIKE';
+        }
+
+        return '';
+    }
+
+    /**
+     * Get last inserted id
+     *
+     * @access public
+     * @return integer
+     */
+    public function getLastId()
+    {
+        return $this->pdo->lastInsertId();
+    }
+
+    /**
+     * Get current schema version
+     *
+     * @access public
+     * @return integer
+     */
+    public function getSchemaVersion()
+    {
+        $this->pdo->exec("CREATE TABLE IF NOT EXISTS [".$this->schemaTable."] ([version] INT DEFAULT '0')");
+
+        $rq = $this->pdo->prepare('SELECT [version] FROM ['.$this->schemaTable.']');
+        $rq->execute();
+        $result = $rq->fetchColumn();
+
+        if ($result !== false) {
+            return (int) $result;
+        }
+        else {
+            $this->pdo->exec('INSERT INTO ['.$this->schemaTable.'] VALUES(0)');
+        }
+
+        return 0;
+    }
+
+    /**
+     * Set current schema version
+     *
+     * @access public
+     * @param  integer  $version
+     */
+    public function setSchemaVersion($version)
+    {
+        $rq = $this->pdo->prepare('UPDATE ['.$this->schemaTable.'] SET [version]=?');
+        $rq->execute(array($version));
+    }
+
+    /**
+     * Run EXPLAIN command
+     *
+     * @param  string $sql
+     * @param  array  $values
+     * @return array
+     */
+    public function explain($sql, array $values)
+    {
+        $this->getConnection()->exec('SET SHOWPLAN_ALL ON');
+        return $this->getConnection()->query($this->getSqlFromPreparedStatement($sql, $values))->fetchAll(PDO::FETCH_ASSOC);
+    }
+}