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-rw-r--r--system/database/drivers/postgre/postgre_driver.php145
1 files changed, 75 insertions, 70 deletions
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 17bd37b38..1d6e9567a 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -44,16 +44,6 @@ class CI_DB_postgre_driver extends CI_DB {
protected $_escape_char = '"';
- // clause and character used for LIKE escape sequences
- protected $_like_escape_str = " ESCAPE '%s' ";
- protected $_like_escape_chr = '!';
-
- /**
- * The syntax to count rows is slightly different across different
- * 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 $_random_keyword = ' RANDOM()'; // database specific random keyword
/**
@@ -138,7 +128,15 @@ class CI_DB_postgre_driver extends CI_DB {
*/
public function db_pconnect()
{
- return @pg_pconnect($this->dsn);
+ $conn = @pg_pconnect($this->dsn);
+ if ($conn && pg_connection_status($conn) === PGSQL_CONNECTION_BAD)
+ {
+ if (pg_ping($conn) === FALSE)
+ {
+ return FALSE;
+ }
+ }
+ return $conn;
}
// --------------------------------------------------------------------
@@ -356,13 +354,13 @@ class CI_DB_postgre_driver extends CI_DB {
$table = (func_num_args() > 0) ? func_get_arg(0) : NULL;
$column = (func_num_args() > 1) ? func_get_arg(1) : NULL;
- if ($table == NULL && $v >= '8.1')
+ if ($table === NULL && $v >= '8.1')
{
$sql = 'SELECT LASTVAL() AS ins_id';
}
- elseif ($table != NULL)
+ elseif ($table !== NULL)
{
- if ($column != NULL && $v >= '8.0')
+ if ($column !== NULL && $v >= '8.0')
{
$sql = 'SELECT pg_get_serial_sequence(\''.$table."', '".$column."') AS seq";
$query = $this->query($sql);
@@ -390,35 +388,6 @@ class CI_DB_postgre_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * "Count All" query
- *
- * Generates a platform-specific query string that counts all records in
- * the specified database
- *
- * @param string
- * @return string
- */
- public function count_all($table = '')
- {
- if ($table == '')
- {
- return 0;
- }
-
- $query = $this->query($this->_count_string.$this->protect_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE));
- if ($query->num_rows() == 0)
- {
- return 0;
- }
-
- $query = $query->row();
- $this->_reset_select();
- return (int) $query->numrows;
- }
-
- // --------------------------------------------------------------------
-
- /**
* Show table query
*
* Generates a platform-specific query string so that the table names can be fetched
@@ -428,11 +397,13 @@ class CI_DB_postgre_driver extends CI_DB {
*/
protected function _list_tables($prefix_limit = FALSE)
{
- $sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";
+ $sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \'public\'';
- if ($prefix_limit !== FALSE && $this->dbprefix != '')
+ if ($prefix_limit !== FALSE && $this->dbprefix !== '')
{
- return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
+ return $sql.' AND "table_name" LIKE \''
+ .$this->escape_like_str($this->dbprefix)."%' "
+ .sprintf($this->_like_escape_str, $this->_like_escape_chr);
}
return $sql;
@@ -450,7 +421,7 @@ class CI_DB_postgre_driver extends CI_DB {
*/
protected function _list_columns($table = '')
{
- return "SELECT column_name FROM information_schema.columns WHERE table_name = '".$table."'";
+ return 'SELECT "column_name" FROM "information_schema"."columns" WHERE "table_name" = '.$this->escape($table);
}
// --------------------------------------------------------------------
@@ -496,12 +467,7 @@ class CI_DB_postgre_driver extends CI_DB {
*/
protected function _from_tables($tables)
{
- if ( ! is_array($tables))
- {
- $tables = array($tables);
- }
-
- return implode(', ', $tables);
+ return is_array($tables) ? implode(', ', $tables) : $tables;
}
// --------------------------------------------------------------------
@@ -539,6 +505,47 @@ class CI_DB_postgre_driver extends CI_DB {
// --------------------------------------------------------------------
/**
+ * Update_Batch statement
+ *
+ * Generates a platform-specific batch update string from the supplied data
+ *
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @return string
+ */
+ protected function _update_batch($table, $values, $index, $where = NULL)
+ {
+ $ids = array();
+ foreach ($values as $key => $val)
+ {
+ $ids[] = $val[$index];
+
+ foreach (array_keys($val) as $field)
+ {
+ if ($field !== $index)
+ {
+ $final[$field][] = 'WHEN '.$val[$index].' THEN '.$val[$field];
+ }
+ }
+ }
+
+ $cases = '';
+ foreach ($final as $k => $v)
+ {
+ $cases .= $k.' = (CASE '.$index."\n"
+ .implode("\n", $v)."\n"
+ .'ELSE '.$k.' END), ';
+ }
+
+ return 'UPDATE '.$table.' SET '.substr($cases, 0, -2)
+ .' WHERE '.(($where !== '' && count($where) > 0) ? implode(' ', $where).' AND ' : '')
+ .$index.' IN('.implode(',', $ids).')';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Delete statement
*
* Generates a platform-specific delete string from the supplied data
@@ -573,7 +580,7 @@ class CI_DB_postgre_driver extends CI_DB {
*/
protected function _limit($sql, $limit, $offset)
{
- return $sql.' LIMIT '.$limit.($offset == 0 ? '' : ' OFFSET '.$offset);
+ return $sql.' LIMIT '.$limit.($offset ? ' OFFSET '.$offset : '');
}
// --------------------------------------------------------------------
@@ -586,27 +593,31 @@ class CI_DB_postgre_driver extends CI_DB {
* @param mixed
* @param mixed
* @param string
+ * @param mixed
* @return object
- *
*/
protected function _where($key, $value = NULL, $type = 'AND ', $escape = NULL)
{
- $type = $this->_group_get_type($type);
-
if ( ! is_array($key))
{
$key = array($key => $value);
}
// If the escape value was not set will will base it on the global setting
- if ( ! is_bool($escape))
- {
- $escape = $this->_protect_identifiers;
- }
+ is_bool($escape) OR $escape = $this->_protect_identifiers;
foreach ($key as $k => $v)
{
- $prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0) ? '' : $type;
+ $prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0)
+ ? $this->_group_get_type('')
+ : $this->_group_get_type($type);
+
+ if ($escape === TRUE)
+ {
+ $k = (($op = $this->_get_operator($k)) !== FALSE)
+ ? $this->escape_identifiers(trim(substr($k, 0, strpos($k, $op)))).' '.strstr($k, $op)
+ : $this->escape_identifiers(trim($k));
+ }
if (is_null($v) && ! $this->_has_operator($k))
{
@@ -618,7 +629,6 @@ class CI_DB_postgre_driver extends CI_DB {
{
if ($escape === TRUE)
{
- $k = $this->protect_identifiers($k, FALSE, $escape);
$v = ' '.$this->escape($v);
}
elseif (is_bool($v))
@@ -631,10 +641,6 @@ class CI_DB_postgre_driver extends CI_DB {
$k .= ' = ';
}
}
- else
- {
- $k = $this->protect_identifiers($k, FALSE, $escape);
- }
$this->qb_where[] = $prefix.$k.$v;
if ($this->qb_caching === TRUE)
@@ -653,12 +659,11 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Close DB Connection
*
- * @param resource
* @return void
*/
- protected function _close($conn_id)
+ protected function _close()
{
- @pg_close($conn_id);
+ @pg_close($this->conn_id);
}
}
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-20 10:00:33 +0100