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[ticket/8240] Add ability to get a list of columns of a tables to db_tools.

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PHPBB3-8240
This commit is contained in:
Andreas Fischer 2011-10-14 16:29:33 +02:00
parent 234edf674c
commit 4effe8fb8b
2 changed files with 45 additions and 74 deletions
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111
phpBB/includes/db/db_tools.php
View File

@ -1071,34 +1071,21 @@ class phpbb_db_tools
}
/**
* Check if a specified column exist
* Gets a list of columns of a table.
*
* @param string $table Table to check the column at
* @param string $column_name The column to check
* @param string $table Table name
*
* @return bool True if column exists, else false
* @return array Array of column names (all lower case)
*/
function sql_column_exists($table, $column_name)
function sql_list_columns($table)
{
$columns = array();
switch ($this->sql_layer)
{
case 'mysql_40':
case 'mysql_41':
$sql = "SHOW COLUMNS FROM $table";
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
// lower case just in case
if (strtolower($row['Field']) == $column_name)
{
$this->db->sql_freeresult($result);
return true;
}
}
$this->db->sql_freeresult($result);
return false;
break;
// PostgreSQL has a way of doing this in a much simpler way but would
@ -1109,19 +1096,6 @@ class phpbb_db_tools
WHERE c.relname = '{$table}'
AND a.attnum > 0
AND a.attrelid = c.oid";
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
// lower case just in case
if (strtolower($row['attname']) == $column_name)
{
$this->db->sql_freeresult($result);
return true;
}
}
$this->db->sql_freeresult($result);
return false;
break;
// same deal with PostgreSQL, we must perform more complex operations than
@ -1132,62 +1106,26 @@ class phpbb_db_tools
FROM syscolumns c
LEFT JOIN sysobjects o ON c.id = o.id
WHERE o.name = '{$table}'";
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
// lower case just in case
if (strtolower($row['name']) == $column_name)
{
$this->db->sql_freeresult($result);
return true;
}
}
$this->db->sql_freeresult($result);
return false;
break;
case 'oracle':
$sql = "SELECT column_name
FROM user_tab_columns
WHERE LOWER(table_name) = '" . strtolower($table) . "'";
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
// lower case just in case
if (strtolower($row['column_name']) == $column_name)
{
$this->db->sql_freeresult($result);
return true;
}
}
$this->db->sql_freeresult($result);
return false;
break;
case 'firebird':
$sql = "SELECT RDB\$FIELD_NAME as FNAME
FROM RDB\$RELATION_FIELDS
WHERE RDB\$RELATION_NAME = '" . strtoupper($table) . "'";
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
// lower case just in case
if (strtolower($row['fname']) == $column_name)
{
$this->db->sql_freeresult($result);
return true;
}
}
$this->db->sql_freeresult($result);
return false;
break;
// ugh, SQLite
case 'sqlite':
$sql = "SELECT sql
FROM sqlite_master
WHERE type = 'table'
AND name = '{$table}'";
$result = $this->db->sql_query($sql);
if (!$result)
@ -1211,14 +1149,39 @@ class phpbb_db_tools
continue;
}
if (strtolower($entities[0]) == $column_name)
{
return true;
}
$column = strtolower($entities[0]);
$columns[$column] = $column;
}
return false;
return $columns;
break;
}
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
$column = strtolower(current($row));
$columns[$column] = $column;
}
$this->db->sql_freeresult($result);
return $columns;
}
/**
* Check whether a specified column exist in a table
*
* @param string $table Table to check
* @param string $column_name Column to check
*
* @return bool True if column exists, false otherwise
*/
function sql_column_exists($table, $column_name)
{
$columns = $this->sql_list_columns($table);
return isset($columns[$column_name]);
}
/**

8
tests/dbal/db_tools_test.php
View File

@ -234,6 +234,14 @@ class phpbb_dbal_db_tools_test extends phpbb_database_test_case
$this->assertEquals($row2, $row_actual);
}
public function test_list_columns()
{
$this->assertEquals(
array_keys($this->table_data['COLUMNS']),
array_values($this->tools->sql_list_columns('prefix_table_name'))
);
}
public function test_column_exists()
{
$this->assertTrue($this->tools->sql_column_exists('prefix_table_name', 'c_id'));