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libraries/joomla/database/query/sqlsrv.php

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+<?php
+/**
+ * @package     Joomla.Platform
+ * @subpackage  Database
+ *
+ * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
+ * @license     GNU General Public License version 2 or later; see LICENSE
+ */
+
+defined('JPATH_PLATFORM') or die;
+
+/**
+ * Query Building Class.
+ *
+ * @package     Joomla.Platform
+ * @subpackage  Database
+ * @since       11.1
+ */
+class JDatabaseQuerySqlsrv extends JDatabaseQuery
+{
+	/**
+	 * The character(s) used to quote SQL statement names such as table names or field names,
+	 * etc.  The child classes should define this as necessary.  If a single character string the
+	 * same character is used for both sides of the quoted name, else the first character will be
+	 * used for the opening quote and the second for the closing quote.
+	 *
+	 * @var    string
+	 *
+	 * @since  11.1
+	 */
+	protected $name_quotes = '`';
+
+	/**
+	 * The null or zero representation of a timestamp for the database driver.  This should be
+	 * defined in child classes to hold the appropriate value for the engine.
+	 *
+	 * @var    string
+	 *
+	 * @since  11.1
+	 */
+	protected $null_date = '1900-01-01 00:00:00';
+
+	/**
+	 * Magic function to convert the query to a string.
+	 *
+	 * @return  string	The completed query.
+	 *
+	 * @since   11.1
+	 */
+	public function __toString()
+	{
+		$query = '';
+
+		switch ($this->type)
+		{
+			case 'insert':
+				$query .= (string) $this->insert;
+
+				// Set method
+				if ($this->set)
+				{
+					$query .= (string) $this->set;
+				}
+				// Columns-Values method
+				elseif ($this->values)
+				{
+					if ($this->columns)
+					{
+						$query .= (string) $this->columns;
+					}
+
+					$elements = $this->insert->getElements();
+					$tableName = array_shift($elements);
+
+					$query .= 'VALUES ';
+					$query .= (string) $this->values;
+
+					if ($this->autoIncrementField)
+					{
+						$query = 'SET IDENTITY_INSERT ' . $tableName . ' ON;' . $query . 'SET IDENTITY_INSERT ' . $tableName . ' OFF;';
+					}
+
+					if ($this->where)
+					{
+						$query .= (string) $this->where;
+					}
+				}
+
+				break;
+
+			default:
+				$query = parent::__toString();
+				break;
+		}
+
+		return $query;
+	}
+
+	/**
+	 * Casts a value to a char.
+	 *
+	 * Ensure that the value is properly quoted before passing to the method.
+	 *
+	 * @param   string  $value  The value to cast as a char.
+	 *
+	 * @return  string  Returns the cast value.
+	 *
+	 * @since   11.1
+	 */
+	public function castAsChar($value)
+	{
+		return 'CAST(' . $value . ' as NVARCHAR(10))';
+	}
+
+	/**
+	 * Gets the function to determine the length of a character string.
+	 *
+	 * @param   string  $field      A value.
+	 * @param   string  $operator   Comparison operator between charLength integer value and $condition
+	 * @param   string  $condition  Integer value to compare charLength with.
+	 *
+	 * @return  string  The required char length call.
+	 *
+	 * @since 11.1
+	 */
+	public function charLength($field, $operator = null, $condition = null)
+	{
+		return 'DATALENGTH(' . $field . ')' . (isset($operator) && isset($condition) ? ' ' . $operator . ' ' . $condition : '');
+	}
+
+	/**
+	 * Concatenates an array of column names or values.
+	 *
+	 * @param   array   $values     An array of values to concatenate.
+	 * @param   string  $separator  As separator to place between each value.
+	 *
+	 * @return  string  The concatenated values.
+	 *
+	 * @since   11.1
+	 */
+	public function concatenate($values, $separator = null)
+	{
+		if ($separator)
+		{
+			return '(' . implode('+' . $this->quote($separator) . '+', $values) . ')';
+		}
+		else
+		{
+			return '(' . implode('+', $values) . ')';
+		}
+	}
+
+	/**
+	 * Gets the current date and time.
+	 *
+	 * @return  string
+	 *
+	 * @since   11.1
+	 */
+	public function currentTimestamp()
+	{
+		return 'GETDATE()';
+	}
+
+	/**
+	 * Get the length of a string in bytes.
+	 *
+	 * @param   string  $value  The string to measure.
+	 *
+	 * @return  integer
+	 *
+	 * @since   11.1
+	 */
+	public function length($value)
+	{
+		return 'LEN(' . $value . ')';
+	}
+
+	/**
+	 * Add to the current date and time.
+	 * Usage:
+	 * $query->select($query->dateAdd());
+	 * Prefixing the interval with a - (negative sign) will cause subtraction to be used.
+	 *
+	 * @param   datetime  $date      The date to add to; type may be time or datetime.
+	 * @param   string    $interval  The string representation of the appropriate number of units
+	 * @param   string    $datePart  The part of the date to perform the addition on
+	 *
+	 * @return  string  The string with the appropriate sql for addition of dates
+	 *
+	 * @since   13.1
+	 * @note    Not all drivers support all units.
+	 * @link    http://msdn.microsoft.com/en-us/library/ms186819.aspx for more information
+	 */
+	public function dateAdd($date, $interval, $datePart)
+	{
+		return "DATEADD('" . $datePart . "', '" . $interval . "', '" . $date . "'" . ')';
+	}
+}