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Adding better support for nvarchar(MAX) in SQLServer

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Newer versions of SQLServer perfer to use nvarchar(max) for
text columns.
This commit is contained in:
Mark Story 2011-06-22 08:59:51 -07:00
parent 936d068eec
commit 0c1472ee44
2 changed files with 42 additions and 14 deletions
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42
lib/Cake/Model/Datasource/Database/Sqlserver.php
View file

@ -213,10 +213,10 @@ class Sqlserver extends DboSource {
foreach ($cols as $column) {
$field = $column->Field;
$fields[$field] = array(
'type' => $this->column($column->Type),
'type' => $this->column($column),
'null' => ($column->Null === 'YES' ? true : false),
'default' => preg_replace("/^[(]{1,2}'?([^')]*)?'?[)]{1,2}$/", "$1", $column->Default),
'length' => intval($column->Length),
'length' => $this->length($column),
'key' => ($column->Key == '1') ? 'primary' : false
);
@ -385,22 +385,16 @@ class Sqlserver extends DboSource {
/**
* Converts database-layer column types to basic types
*
* @param string $real Real database-layer column type (i.e. "varchar(255)")
* @param mixed $real Either the string value of the fields type.
* or the Result object from Sqlserver::describe()
* @return string Abstract column type (i.e. "string")
*/
public function column($real) {
if (is_array($real)) {
$col = $real['name'];
if (isset($real['limit'])) {
$col .= '(' . $real['limit'] . ')';
}
return $col;
}
$col = str_replace(')', '', $real);
$limit = null;
if (strpos($col, '(') !== false) {
list($col, $limit) = explode('(', $col);
$col = $real;
if (is_object($real) && isset($real->Field)) {
$limit = $real->Length;
$col = $real->Type;
}
if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
@ -412,6 +406,9 @@ class Sqlserver extends DboSource {
if (strpos($col, 'int') !== false) {
return 'integer';
}
if (strpos($col, 'char') !== false && $limit === -1) {
return 'text';
}
if (strpos($col, 'char') !== false) {
return 'string';
}
@ -427,6 +424,23 @@ class Sqlserver extends DboSource {
return 'text';
}
/**
* Handle SQLServer specific length properties.
* SQLServer handles text types as nvarchar/varchar with a length of -1.
*
* @param mixed $length Either the length as a string, or a Column descriptor object.
* @return mixed null|integer with length of column.
*/
public function length($length) {
if (is_object($length) && isset($length->Length)) {
if ($length->Length === -1 && strpos($length->Type, 'char') !== false) {
return null;
}
return $length->Length;
}
return parent::length($length);
}
/**
* Builds a map of the columns contained in a result
*

14
lib/Cake/Test/Case/Model/Datasource/Database/SqlserverTest.php
View file

@ -394,6 +394,14 @@ class SqlserverTest extends CakeTestCase {
'Length' => '4',
'Null' => 'NO',
'Type' => 'integer'
),
(object) array(
'Default' => '',
'Field' => 'body',
'Key' => 0,
'Length' => -1,
'Null' => 'YES',
'Type' => 'nvarchar'
)
));
$this->db->executeResultsStack = array($SqlserverTableDescription);
@ -405,6 +413,12 @@ class SqlserverTest extends CakeTestCase {
'null' => false,
'default' => '0',
'length' => 4
),
'body' => array(
'type' => 'text',
'null' => true,
'default' => null,
'length' => null
)
);
$this->assertEqual($expected, $result);