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API CHANGE: Added name argument to DB::getConn() and DB::setConn(), so that you can store multiple named connections.

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git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@87087 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Sam Minnee 2009-09-22 23:48:54 +00:00
parent 2cb99122d3
commit 47e3d28c89
1 changed files with 34 additions and 28 deletions
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62
core/model/DB.php
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@ -10,7 +10,7 @@ class DB {
* The global database connection.
* @var Database
*/
protected static $globalConn;
private static $connections = array();
/**
* The last SQL query run.
@ -27,18 +27,24 @@ class DB {
* Set the global database connection.
* Pass an object that's a subclass of Database. This object will be used when {@link DB::query()}
* is called.
* @var Database $globalConn
* @param $connection The connecton object to set as the connection.
* @param $name The name to give to this connection. If you omit this argument, the connection
* will be the default one used by the ORM. However, you can store other named connections to
* be accessed through DB::getConn($name). This is useful when you have an application that
* needs to connect to more than one database.
*/
static function setConn($globalConn) {
DB::$globalConn = $globalConn;
static function setConn(Database $connection, $name = 'default') {
self::$connections[$name] = $connection;
}
/**
* Get the global database connection.
* @param $name An optional name given to a connection in the DB::setConn() call. If omitted,
* the default connection is returned.
* @return Database
*/
static function getConn() {
return DB::$globalConn;
static function getConn($name = 'default') {
return self::$connections[$name];
}
/**
@ -76,7 +82,7 @@ class DB {
$dbClass = $databaseConfig['type'];
$conn = new $dbClass($databaseConfig);
DB::setConn($conn);
self::setConn($conn);
}
/**
@ -94,7 +100,7 @@ class DB {
* @return string $connect The connection string.
**/
public function getConnect($parameters) {
return DB::$globalConn->getConnect($parameters);
return self::getConn()->getConnect($parameters);
}
/**
@ -104,18 +110,18 @@ class DB {
* @return Query
*/
static function query($sql, $errorLevel = E_USER_ERROR) {
DB::$lastQuery = $sql;
self::$lastQuery = $sql;
/* debug helper for query efficiency
if(substr(strtolower($sql),0,6) == 'select') {
$product = 1;
foreach(DB::$globalConn->query("explain " . $sql, $errorLevel) as $explainRow) {
foreach(self::getConn()->query("explain " . $sql, $errorLevel) as $explainRow) {
if($explainRow['rows']) $product *= $explainRow['rows'];
}
if($product > 100)
Debug::message("Cartesian product $product for SQL: $sql");
} */
return DB::$globalConn->query($sql, $errorLevel);
return self::getConn()->query($sql, $errorLevel);
}
/**
@ -127,8 +133,8 @@ class DB {
* @param array $manipulation
*/
static function manipulate($manipulation) {
DB::$lastQuery = $manipulation;
return DB::$globalConn->manipulate($manipulation);
self::$lastQuery = $manipulation;
return self::getConn()->manipulate($manipulation);
}
/**
@ -136,7 +142,7 @@ class DB {
* @return int
*/
static function getGeneratedID($table) {
return DB::$globalConn->getGeneratedID($table);
return self::getConn()->getGeneratedID($table);
}
/**
@ -144,7 +150,7 @@ class DB {
* @return boolean
*/
static function isActive() {
if(DB::$globalConn) return DB::$globalConn->isActive();
if($conn = self::getConn()) return $conn->isActive();
else return false;
}
@ -159,7 +165,7 @@ class DB {
* @return boolean Returns true if successful
*/
static function createDatabase($connect, $username, $password, $database) {
return DB::$globalConn->createDatabase($connect, $username, $password, $database);
return self::getConn()->createDatabase($connect, $username, $password, $database);
}
/**
@ -173,7 +179,7 @@ class DB {
* @return The table name generated. This may be different from the table name, for example with temporary tables.
*/
static function createTable($table, $fields = null, $indexes = null, $options = null) {
return DB::$globalConn->createTable($table, $fields, $indexes, $options);
return self::getConn()->createTable($table, $fields, $indexes, $options);
}
/**
@ -183,7 +189,7 @@ class DB {
* @param string $spec The field specification, eg 'INTEGER NOT NULL'
*/
static function createField($table, $field, $spec) {
return DB::$globalConn->createField($table, $field, $spec);
return self::getConn()->createField($table, $field, $spec);
}
/**
@ -200,7 +206,7 @@ class DB {
* @param string $options SQL statement to append to the CREATE TABLE call.
*/
static function requireTable($table, $fieldSchema = null, $indexSchema = null, $hasAutoIncPK=true, $options = null) {
return DB::$globalConn->requireTable($table, $fieldSchema, $indexSchema, $hasAutoIncPK, $options);
return self::getConn()->requireTable($table, $fieldSchema, $indexSchema, $hasAutoIncPK, $options);
}
/**
@ -210,7 +216,7 @@ class DB {
* @param string $spec The field specification.
*/
static function requireField($table, $field, $spec) {
return DB::$globalConn->requireField($table, $field, $spec);
return self::getConn()->requireField($table, $field, $spec);
}
/**
@ -220,7 +226,7 @@ class DB {
* @param string|boolean $spec The specification of the index. See requireTable() for more information.
*/
static function requireIndex($table, $index, $spec) {
return DB::$globalConn->requireIndex($table, $index, $spec);
return self::getConn()->requireIndex($table, $index, $spec);
}
/**
@ -228,7 +234,7 @@ class DB {
* @param string $table The table name.
*/
static function dontRequireTable($table) {
return DB::$globalConn->dontRequireTable($table);
return self::getConn()->dontRequireTable($table);
}
/**
@ -238,7 +244,7 @@ class DB {
* @param string $fieldName
*/
static function dontRequireField($table, $fieldName) {
return DB::$globalConn->dontRequireField($table, $fieldName);
return self::getConn()->dontRequireField($table, $fieldName);
}
/**
@ -247,7 +253,7 @@ class DB {
* @return boolean Return true if the table has integrity after the method is complete.
*/
static function checkAndRepairTable($table) {
return DB::$globalConn->checkAndRepairTable($table);
return self::getConn()->checkAndRepairTable($table);
}
/**
@ -255,7 +261,7 @@ class DB {
* @return int
*/
static function affectedRows() {
return DB::$globalConn->affectedRows();
return self::getConn()->affectedRows();
}
/**
@ -264,7 +270,7 @@ class DB {
* @return array
*/
static function tableList() {
return DB::$globalConn->tableList();
return self::getConn()->tableList();
}
/**
@ -274,14 +280,14 @@ class DB {
* @return array
*/
static function fieldList($table) {
return DB::$globalConn->fieldList($table);
return self::getConn()->fieldList($table);
}
/**
* Enable supression of database messages.
*/
static function quiet() {
return DB::$globalConn->quiet();
return self::getConn()->quiet();
}
}
?>