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Move query statement fixup handling to Connection wrapper

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This commit is contained in:
Bart Visscher 2013-02-25 22:49:55 +01:00
parent 1d5d23a1de
commit 58991150ab
7 changed files with 39 additions and 50 deletions
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48
lib/db.php
View file

@ -213,11 +213,6 @@ class OC_DB {
* SQL query via Doctrine prepare(), needs to be execute()'d!
*/
static public function prepare( $query , $limit = null, $offset = null, $isManipulation = null) {
// Optimize the query
$query = self::processQuery( $query );
if(OC_Config::getValue( "log_query", false)) {
OC_Log::write('core', 'DB prepare : '.$query, OC_Log::DEBUG);
}
self::connect();
if ($isManipulation === null) {
@ -448,49 +443,6 @@ class OC_DB {
return $result;
}
/**
* @brief does minor changes to query
* @param string $query Query string
* @return string corrected query string
*
* This function replaces *PREFIX* with the value of $CONFIG_DBTABLEPREFIX
* and replaces the ` with ' or " according to the database driver.
*/
private static function processQuery( $query ) {
self::connect();
// We need Database type
if(is_null(self::$type)) {
self::$type=OC_Config::getValue( "dbtype", "sqlite" );
}
$type = self::$type;
// differences in escaping of table names ('`' for mysql) and getting the current timestamp
if( $type == 'sqlite' || $type == 'sqlite3' ) {
$query = str_replace( '`', '"', $query );
$query = str_ireplace( 'NOW()', 'datetime(\'now\')', $query );
$query = str_ireplace( 'UNIX_TIMESTAMP()', 'strftime(\'%s\',\'now\')', $query );
} elseif( $type == 'pgsql' ) {
$query = str_replace( '`', '"', $query );
$query = str_ireplace( 'UNIX_TIMESTAMP()', 'cast(extract(epoch from current_timestamp) as integer)',
$query );
} elseif( $type == 'oci' ) {
$query = str_replace( '`', '"', $query );
$query = str_ireplace( 'NOW()', 'CURRENT_TIMESTAMP', $query );
$query = str_ireplace( 'UNIX_TIMESTAMP()', "(cast(sys_extract_utc(systimestamp) as date) - date'1970-01-01') * 86400", $query );
}elseif( $type == 'mssql' ) {
$query = preg_replace( "/\`(.*?)`/", "[$1]", $query );
$query = str_ireplace( 'NOW()', 'CURRENT_TIMESTAMP', $query );
$query = str_replace( 'LENGTH(', 'LEN(', $query );
$query = str_replace( 'SUBSTR(', 'SUBSTRING(', $query );
$query = str_ireplace( 'UNIX_TIMESTAMP()', 'DATEDIFF(second,{d \'1970-01-01\'},GETDATE())', $query );
}
return $query;
}
return $query;
}
/**
* @brief drop a table
* @param string $tableName the table to drop

4
lib/db/adapter.php
View file

@ -18,4 +18,8 @@ class Adapter {
public function lastInsertId($table) {
return $this->conn->realLastInsertId($table);
}
public function fixupStatement($statement) {
return $statement;
}
}

7
lib/db/adapteroci8.php
View file

@ -18,4 +18,11 @@ class AdapterOCI8 extends Adapter {
}
return $this->conn->lastInsertId($table);
}
public function fixupStatement($statement) {
$statement = str_replace( '`', '"', $statement );
$statement = str_ireplace( 'NOW()', 'CURRENT_TIMESTAMP', $statement );
$statement = str_ireplace( 'UNIX_TIMESTAMP()', "(cast(sys_extract_utc(systimestamp) as date) - date'1970-01-01') * 86400", $statement );
return $statement;
}
}

6
lib/db/adapterpgsql.php
View file

@ -13,4 +13,10 @@ class AdapterPgSql extends Adapter {
public function lastInsertId($table) {
return $this->conn->fetchColumn('SELECT lastval()');
}
public function fixupStatement($statement) {
$statement = str_replace( '`', '"', $statement );
$statement = str_ireplace( 'UNIX_TIMESTAMP()', 'cast(extract(epoch from current_timestamp) as integer)', $statement );
return $statement;
}
}

6
lib/db/adaptersqlite.php
View file

@ -10,4 +10,10 @@
namespace OC\DB;
class AdapterSqlite extends Adapter {
public function fixupStatement($statement) {
$statement = str_replace( '`', '"', $statement );
$statement = str_ireplace( 'NOW()', 'datetime(\'now\')', $statement );
$statement = str_ireplace( 'UNIX_TIMESTAMP()', 'strftime(\'%s\',\'now\')', $statement );
return $statement;
}
}

9
lib/db/adaptersqlsrv.php
View file

@ -16,4 +16,13 @@ class AdapterSQLSrv extends Adapter {
}
return $this->conn->lastInsertId($table);
}
public function fixupStatement($statement) {
$statement = preg_replace( "/\`(.*?)`/", "[$1]", $statement );
$statement = str_ireplace( 'NOW()', 'CURRENT_TIMESTAMP', $statement );
$statement = str_replace( 'LENGTH(', 'LEN(', $statement );
$statement = str_replace( 'SUBSTR(', 'SUBSTRING(', $statement );
$statement = str_ireplace( 'UNIX_TIMESTAMP()', 'DATEDIFF(second,{d \'1970-01-01\'},GETDATE())', $statement );
return $statement;
}
}

9
lib/db/connection.php
View file

@ -50,6 +50,8 @@ class Connection extends \Doctrine\DBAL\Connection {
*/
public function prepare( $statement, $limit=null, $offset=null ) {
$statement = $this->replaceTablePrefix($statement);
$statement = $this->adapter->fixupStatement($statement);
if ($limit === -1) {
$limit = null;
}
@ -62,6 +64,9 @@ class Connection extends \Doctrine\DBAL\Connection {
}
}
$rawQuery = $statement;
if(\OC_Config::getValue( "log_query", false)) {
\OC_Log::write('core', 'DB prepare : '.$statement, \OC_Log::DEBUG);
}
$result = parent::prepare($statement);
if (is_null($limit) && $this->cachingQueryStatementEnabled) {
$this->preparedQueries[$rawQuery] = $result;
@ -85,7 +90,7 @@ class Connection extends \Doctrine\DBAL\Connection {
public function executeQuery($query, array $params = array(), $types = array(), QueryCacheProfile $qcp = null)
{
$query = $this->replaceTablePrefix($query);
// TODO: fixup
$query = $this->adapter->fixupStatement($query);
return parent::executeQuery($query, $params, $types, $qcp);
}
@ -104,7 +109,7 @@ class Connection extends \Doctrine\DBAL\Connection {
public function executeUpdate($query, array $params = array(), array $types = array())
{
$query = $this->replaceTablePrefix($query);
// TODO: fixup
$query = $this->adapter->fixupStatement($query);
return parent::executeUpdate($query, $params, $types);
}