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authorAndrey Andreev <narf@bofh.bg>2012-04-27 10:54:40 +0200
committerAndrey Andreev <narf@bofh.bg>2012-04-27 10:54:40 +0200
commitce747c8a1e72a30f5369de7d56ba91b72f0e2eb3 (patch)
tree32433143610df1683131dba5cf4437ddadc306c6 /system/database/drivers/interbase/interbase_driver.php
parent870ad190f068ec16aad45622528ba6747c61c120 (diff)
parent61318a2c53c13a314f483fcbbfd64c6e01f5242c (diff)
Merge upstream branch
Diffstat (limited to 'system/database/drivers/interbase/interbase_driver.php')
-rw-r--r--system/database/drivers/interbase/interbase_driver.php234
1 files changed, 55 insertions, 179 deletions
diff --git a/system/database/drivers/interbase/interbase_driver.php b/system/database/drivers/interbase/interbase_driver.php
index 9fa03adc7..1b18de803 100644
--- a/system/database/drivers/interbase/interbase_driver.php
+++ b/system/database/drivers/interbase/interbase_driver.php
@@ -25,13 +25,11 @@
* @filesource
*/
-// ------------------------------------------------------------------------
-
/**
* Firebird/Interbase Database Adapter Class
*
* Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
* class is being used or not.
*
* @package CodeIgniter
@@ -56,8 +54,8 @@ class CI_DB_interbase_driver extends CI_DB {
* database engines, so this string appears in each driver and is
* used for the count_all() and count_all_results() functions.
*/
- protected $_count_string = "SELECT COUNT(*) AS ";
- protected $_random_keyword = ' Random()'; // database specific random keyword
+ protected $_count_string = 'SELECT COUNT(*) AS ';
+ protected $_random_keyword = ' Random()'; // database specific random keyword
// Keeps track of the resource for the current transaction
protected $trans;
@@ -87,34 +85,6 @@ class CI_DB_interbase_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * Reconnect
- *
- * Keep / reestablish the db connection if no queries have been
- * sent for a length of time exceeding the server's idle timeout
- *
- * @return void
- */
- public function reconnect()
- {
- // not implemented in Interbase/Firebird
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Select the database
- *
- * @return bool
- */
- public function db_select()
- {
- // Connection selects the database
- return TRUE;
- }
-
- // --------------------------------------------------------------------
-
- /**
* Database version number
*
* @return string
@@ -160,13 +130,8 @@ class CI_DB_interbase_driver extends CI_DB {
*/
public function trans_begin($test_mode = FALSE)
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
@@ -174,7 +139,7 @@ class CI_DB_interbase_driver extends CI_DB {
// Reset the transaction failure flag.
// If the $test_mode flag is set to TRUE transactions will be rolled back
// even if the queries produce a successful result.
- $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+ $this->_trans_failure = ($test_mode === TRUE);
$this->trans = @ibase_trans($this->conn_id);
@@ -190,13 +155,8 @@ class CI_DB_interbase_driver extends CI_DB {
*/
public function trans_commit()
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans->depth > 0)
{
return TRUE;
}
@@ -213,13 +173,8 @@ class CI_DB_interbase_driver extends CI_DB {
*/
public function trans_rollback()
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
@@ -251,9 +206,9 @@ class CI_DB_interbase_driver extends CI_DB {
// escape LIKE condition wildcards
if ($like === TRUE)
{
- $str = str_replace( array('%', '_', $this->_like_escape_chr),
- array($this->_like_escape_chr.'%', $this->_like_escape_chr.'_', $this->_like_escape_chr.$this->_like_escape_chr),
- $str);
+ return str_replace(array($this->_like_escape_chr, '%', '_'),
+ array($this->_like_escape_chr.$this->_like_escape_chr, $this->_like_escape_chr.'%', $this->_like_escape_chr.'_'),
+ $str);
}
return $str;
@@ -264,7 +219,7 @@ class CI_DB_interbase_driver extends CI_DB {
/**
* Affected Rows
*
- * @return integer
+ * @return int
*/
public function affected_rows()
{
@@ -276,9 +231,9 @@ class CI_DB_interbase_driver extends CI_DB {
/**
* Insert ID
*
- * @param string $generator_name
- * @param integer $inc_by
- * @return integer
+ * @param string $generator_name
+ * @param int $inc_by
+ * @return int
*/
public function insert_id($generator_name, $inc_by=0)
{
@@ -310,9 +265,9 @@ class CI_DB_interbase_driver extends CI_DB {
return 0;
}
- $row = $query->row();
+ $query = $query->row();
$this->_reset_select();
- return (int) $row->numrows;
+ return (int) $query->numrows;
}
// --------------------------------------------------------------------
@@ -322,21 +277,18 @@ class CI_DB_interbase_driver extends CI_DB {
*
* Generates a platform-specific query string so that the table names can be fetched
*
- * @param boolean
+ * @param bool
* @return string
*/
protected function _list_tables($prefix_limit = FALSE)
{
- $sql = <<<SQL
- SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
- WHERE "RDB\$RELATION_NAME" NOT LIKE 'RDB$%'
- AND "RDB\$RELATION_NAME" NOT LIKE 'MON$%'
-SQL;
+ $sql = 'SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
- if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+ if ($prefix_limit !== FALSE && $this->dbprefix != '')
{
- $sql .= ' AND "RDB$RELATION_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
+ return $sql.' AND "RDB$RELATION_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
}
+
return $sql;
}
@@ -352,10 +304,7 @@ SQL;
*/
protected function _list_columns($table = '')
{
- return <<<SQL
- SELECT "RDB\$FIELD_NAME" FROM "RDB\$RELATION_FIELDS"
- WHERE "RDB\$RELATION_NAME"='{$table}';
-SQL;
+ return 'SELECT "RDB$FIELD_NAME" FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = \''.$this->escape_str($table)."'";
}
// --------------------------------------------------------------------
@@ -366,14 +315,14 @@ SQL;
* Generates a platform-specific query so that the column data can be retrieved
*
* @param string the table name
- * @return object
+ * @return string
*/
protected function _field_data($table)
{
// Need to find a more efficient way to do this
// but Interbase/Firebird seems to lack the
// limit clause
- return "SELECT * FROM {$table}";
+ return 'SELECT * FROM '.$table;
}
// --------------------------------------------------------------------
@@ -394,49 +343,13 @@ SQL;
// --------------------------------------------------------------------
/**
- * Escape the SQL Identifiers
- *
- * This public function escapes column and table names
- *
- * @param string
- * @return string
- */
- protected function _escape_identifiers($item)
- {
- foreach ($this->_reserved_identifiers as $id)
- {
- if (strpos($item, '.'.$id) !== FALSE)
- {
- $str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);
-
- // remove duplicates if the user already included the escape
- return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
- }
- }
-
- if (strpos($item, '.') !== FALSE)
- {
- $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;
- }
- else
- {
- $str = $this->_escape_char.$item.$this->_escape_char;
- }
-
- // remove duplicates if the user already included the escape
- return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
- }
-
- // --------------------------------------------------------------------
-
- /**
* From Tables
*
* This public function implicitly groups FROM tables so there is no confusion
* about operator precedence in harmony with SQL standards
*
- * @param type
- * @return type
+ * @param array
+ * @return string
*/
protected function _from_tables($tables)
{
@@ -452,23 +365,6 @@ SQL;
// --------------------------------------------------------------------
/**
- * Insert statement
- *
- * Generates a platform-specific insert string from the supplied data
- *
- * @param string the table name
- * @param array the insert keys
- * @param array the insert values
- * @return string
- */
- protected function _insert($table, $keys, $values)
- {
- return "INSERT INTO {$table} (".implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
- }
-
- // --------------------------------------------------------------------
-
- /**
* Update statement
*
* Generates a platform-specific update string from the supplied data
@@ -477,27 +373,27 @@ SQL;
* @param array the update data
* @param array the where clause
* @param array the orderby clause
- * @param array the limit clause
+ * @param array the limit clause (ignored)
+ * @param array the like clause
* @return string
*/
- protected function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+ protected function _update($table, $values, $where, $orderby = array(), $limit = FALSE, $like = array())
{
foreach ($values as $key => $val)
{
- $valstr[] = $key." = ".$val;
+ $valstr[] = $key.' = '.$val;
}
- //$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
-
- $orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+ $where = empty($where) ? '' : ' WHERE '.implode(' ', $where);
- $sql = "UPDATE {$table} SET ".implode(', ', $valstr);
-
- $sql .= ($where != '' AND count($where) >=1) ? ' WHERE '.implode(' ', $where) : '';
-
- $sql .= $orderby;
+ if ( ! empty($like))
+ {
+ $where .= ($where === '' ? ' WHERE ' : ' AND ').implode(' ', $like);
+ }
- return $sql;
+ return 'UPDATE '.$table.' SET '.implode(', ', $valstr)
+ .$where
+ .(count($orderby) > 0 ? ' ORDER BY '.implode(', ', $orderby) : '');
}
@@ -507,15 +403,16 @@ SQL;
* Truncate statement
*
* Generates a platform-specific truncate string from the supplied data
- * If the database does not support the truncate() command
- * This public function maps to "DELETE FROM table"
+ *
+ * If the database does not support the truncate() command,
+ * then this method maps to 'DELETE FROM table'
*
* @param string the table name
* @return string
*/
protected function _truncate($table)
{
- return $this->_delete($table);
+ return 'DELETE FROM '.$table;
}
// --------------------------------------------------------------------
@@ -527,28 +424,18 @@ SQL;
*
* @param string the table name
* @param array the where clause
- * @param string the limit clause
+ * @param array the like clause
+ * @param string the limit clause (ignored)
* @return string
*/
protected function _delete($table, $where = array(), $like = array(), $limit = FALSE)
{
- $conditions = '';
-
- if (count($where) > 0 OR count($like) > 0)
- {
- $conditions = "\nWHERE ";
- $conditions .= implode("\n", $this->ar_where);
+ $conditions = array();
- if (count($where) > 0 && count($like) > 0)
- {
- $conditions .= ' AND ';
- }
- $conditions .= implode("\n", $like);
- }
+ empty($where) OR $conditions[] = implode(' ', $where);
+ empty($like) OR $conditions[] = implode(' ', $like);
- //$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
-
- return "DELETE FROM {$table}{$conditions}";
+ return 'DELETE FROM '.$table.(count($conditions) > 0 ? ' WHERE '.implode(' AND ', $conditions) : '');
}
// --------------------------------------------------------------------
@@ -559,36 +446,25 @@ SQL;
* Generates a platform-specific LIMIT clause
*
* @param string the sql query string
- * @param integer the number of rows to limit the query to
- * @param integer the offset value
+ * @param int the number of rows to limit the query to
+ * @param int the offset value
* @return string
*/
protected function _limit($sql, $limit, $offset)
{
- // Keep the current sql string safe for a moment
- $orig_sql = $sql;
-
// Limit clause depends on if Interbase or Firebird
if (stripos($this->version(), 'firebird') !== FALSE)
{
- $sql = 'FIRST '. (int) $limit;
-
- if ($offset > 0)
- {
- $sql .= ' SKIP '. (int) $offset;
- }
+ $select = 'FIRST '. (int) $limit
+ .($offset > 0 ? ' SKIP '. (int) $offset : '');
}
else
{
- $sql = 'ROWS ' . (int) $limit;
-
- if ($offset > 0)
- {
- $sql = 'ROWS '. (int) $offset . ' TO ' . ($limit + $offset);
- }
+ $select = 'ROWS '
+ .($offset > 0 ? (int) $offset.' TO '.($limit + $offset) : (int) $limit);
}
- return preg_replace('`SELECT`i', "SELECT {$sql}", $orig_sql);
+ return preg_replace('`SELECT`i', 'SELECT '.$select, $sql);
}
// --------------------------------------------------------------------