Added support for time zone config setting for PostgreSql adapter.

data/source/database/adapter/PostgreSql.php

@@ -81,7 +81,12 @@ class PostgreSql extends \lithium\data\source\Database {
 	 * list of active connections.
 	 */
 	public function __construct(array $config = array()) {
-		$defaults = array('host' => 'localhost:5432', 'encoding' => null, 'schema' => 'public');
+		$defaults = array(
+			'host' => 'localhost:5432',
+			'encoding' => null,
+			'schema' => 'public',
+			'timezone' => null
+		);
 		parent::__construct($config + $defaults);
 	}
 
@@ -127,6 +132,10 @@ public function connect() {
 		if ($this->_config['schema']) {
 			$this->search_path($this->_config['schema']);
 		}
+
+		if ($this->_config['timezone']) {
+			$this->timezone($this->_config['timezone']);
+		}
 		return true;
 	}
 
@@ -235,6 +244,25 @@ public function search_path($search_path) {
 		}
 	}
 
+	/**
+	 * Gets or sets the time zone for the connection
+	 * @param $timezone
+	 * @return mixed If setting the time zone; returns true on success, else false
+	 *         When getting, returns the time zone
+	 */
+	public function timezone($timezone = null) {
+		if (empty($timezone)) {
+			$query = $this->connection->query('SHOW TIME ZONE');
+			return $query->fetchColumn();
+		}
+		try {
+			$this->connection->exec("SET TIME ZONE '{$timezone}'");
+			return true;
+		} catch (PDOException $e) {
+			return false;
+		}
+	}
+
 	/**
 	 * Gets or sets the encoding for the connection.
 	 *

tests/cases/data/source/database/adapter/PostgreSqlTest.php

@@ -52,7 +52,7 @@ public function testConstructorDefaults() {
 			'autoConnect' => false, 'encoding' => null,'persistent' => true,
 			'host' => 'localhost:5432', 'login' => 'root', 'password' => '',
 			'database' => null, 'dsn' => null, 'options' => array(),
-			'init' => true, 'schema' => 'public'
+			'init' => true, 'schema' => 'public', 'timezone' => null
 		);
 		$this->assertEqual($expected, $result);
 	}
@@ -93,6 +93,15 @@ public function testDatabaseEncoding() {
 		$this->assertEqual('UTF-8', $this->db->encoding());
 	}
 
+	public function testDatabaseTimezone() {
+		$this->assertTrue($this->db->isConnected());
+		$this->assertTrue($this->db->timezone('UTC'));
+		$this->assertEqual('UTC', $this->db->timezone());
+
+		$this->assertTrue($this->db->timezone('US/Eastern'));
+		$this->assertEqual('US/Eastern', $this->db->timezone());
+	}
+
 	public function testValueByIntrospect() {
 		$expected = "'string'";
 		$result = $this->db->value("string");
@@ -149,7 +158,12 @@ public function testRawSqlQuerying() {
 		$this->assertTrue(is_numeric($result[0]['id']));
 		unset($result[0]['id']);
 
-		$expected = array('name' => 'Test', 'active' => true, 'created' => null, 'modified' => null);
+		$expected = array(
+			'name' => 'Test',
+			'active' => true,
+			'created' => null,
+			'modified' => null
+		);
 		$this->assertIdentical($expected, $result[0]);
 
 		$this->assertTrue($this->db->delete('DELETE From companies WHERE name = {:name}', array(