processmaker-files/thirdparty/propel/adapter/DBPostgres.php

<?php

/*
 *  $Id: DBPostgres.php 536 2007-01-10 14:30:38Z heltem $
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information please see
 * <http://propel.phpdb.org>.
 */

require_once 'propel/adapter/DBAdapter.php';

/**
 * This is used to connect to PostgresQL databases.
 *
 * <a href="http://www.pgsql.org">http://www.pgsql.org</a>
 *
 * @author     Hans Lellelid <hans@xmpl.org> (Propel)
 * @author     Hakan Tandogan <hakan42@gmx.de> (Torque)
 * @version    $Revision: 536 $
 * @package    propel.adapter
 */
class DBPostgres extends DBAdapter {

	/**
	 * This method is used to ignore case.
	 *
	 * @param      string $in The string to transform to upper case.
	 * @return     string The upper case string.
	 */
	public function toUpperCase($in)
	{
		return "UPPER(" . $in . ")";
	}

	/**
	 * This method is used to ignore case.
	 *
	 * @param      in The string whose case to ignore.
	 * @return     The string in a case that can be ignored.
	 */
	public function ignoreCase($in)
	{
		return "UPPER(" . $in . ")";
	}

	/**
	 * Returns SQL which concatenates the second string to the first.
	 *
	 * @param      string String to concatenate.
	 * @param      string String to append.
	 * @return     string
	 */
	public function concatString($s1, $s2)
	{
		return "($s1 || $s2)";
	}

	/**
	 * Returns SQL which extracts a substring.
	 *
	 * @param      string String to extract from.
	 * @param      int Offset to start from.
	 * @param      int Number of characters to extract.
	 * @return     string
	 */
	public function subString($s, $pos, $len)
	{
		return "substring($s from $pos" . ($len > -1 ? "for $len" : "") . ")";
	}

	/**
	 * Returns SQL which calculates the length (in chars) of a string.
	 *
	 * @param      string String to calculate length of.
	 * @return     string
	 */
	public function strLength($s)
	{
		return "char_length($s)";
	}

	/**
	 * Locks the specified table.
	 *
	 * @param      Connection $con The Creole connection to use.
	 * @param      string $table The name of the table to lock.
	 * @exception SQLException No Statement could be created or executed.
	 */
	public function lockTable(Connection $con, $table)
	{
	}

	/**
	 * Unlocks the specified table.
	 *
	 * @param      Connection $con The Creole connection to use.
	 * @param      string $table The name of the table to unlock.
	 * @exception SQLException No Statement could be created or executed.
	 */
	public function unlockTable(Connection $con, $table)
	{
	}

}