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Adding schema generation support to DboMysql

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git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@4311 3807eeeb-6ff5-0310-8944-8be069107fe0
This commit is contained in:
nate 2007-01-21 22:55:58 +00:00
parent 4010ecb8b3
commit 53dca9cccc
2 changed files with 107 additions and 7 deletions
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113
cake/libs/model/datasources/dbo/dbo_mysql.php
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@ -180,10 +180,11 @@ class DboMysql extends DboSource {
}
if (isset($column[0])) {
$fields[] = array(
'name' => $column[0]['Field'],
'type' => $this->column($column[0]['Type']),
'null' => $column[0]['Null'],
'default' => $column[0]['Default']
'name' => $column[0]['Field'],
'type' => $this->column($column[0]['Type']),
'null' => ($column[0]['Null'] == 'YES' ? true : false),
'default' => $column[0]['Default'],
'length' => $this->length($column[0]['Type'])
);
}
}
@ -355,13 +356,13 @@ class DboMysql extends DboSource {
}
$col = r(')', '', $real);
$limit = null;
@list($col, $limit) = explode('(', $col);
$limit = $this->limit($real);
@list($col) = explode('(', $col);
if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
return $col;
}
if ($col == 'tinyint' && $limit == '1') {
if ($col == 'tinyint' && $limit == 1) {
return 'boolean';
}
if (strpos($col, 'int') !== false) {
@ -387,6 +388,22 @@ class DboMysql extends DboSource {
}
return 'text';
}
/**
* Gets the length of a database-native column description, or null if no length
*
* @param string $real Real database-layer column type (i.e. "varchar(255)")
* @return int An integer representing the length of the column
*/
function length($real) {
$col = r(array(')', 'unsigned'), '', $real);
$limit = null;
@list($col, $limit) = explode('(', $col);
if ($limit != null) {
return intval($limit);
}
return null;
}
/**
* Enter description here...
*
@ -446,6 +463,88 @@ class DboMysql extends DboSource {
function getEncoding() {
return mysql_client_encoding($this->connection);
}
/**
* Generate a MySQL schema for the given Schema object
*
* @param object $schema An instance of a subclass of CakeSchema
* @param string $table Optional. If specified only the table name given will be generated.
* Otherwise, all tables defined in the schema are generated.
* @return string
*/
function generateSchema($schema, $table = null) {
if (!is_a($schema, 'CakeSchema')) {
trigger_error(__('Invalid schema object'), E_USER_WARNING);
return null;
}
$out = '';
foreach ($schema->tables as $curTable => $columns) {
if (empty($table) || $table == $curTable) {
$out .= 'CREATE TABLE ' . $this->fullTableName($curTable) . " (\n";
$colList = array();
$primary = null;
foreach ($columns as $col) {
if (isset($col['key']) && $col['key'] == 'primary') {
$primary = $col;
}
$colList[] = $this->generateColumnSchema($col);
}
if (empty($primary)) {
$primary = array('id', 'integer', 'key' => 'primary');
array_unshift($colList, $this->generateColumnSchema($primary));
}
$colList[] = 'PRIMARY KEY (' . $this->name($primary[0]) . ')';
$out .= "\t" . join(",\n\t", $colList) . "\n);\n\n";
}
}
return $out;
}
/**
* Generate a MySQL-native column schema string
*
* @param array $column An array structured like the following: array('name', 'type'[, options]),
* where options can be 'default', 'length', or 'key'.
* @return string
*/
function generateColumnSchema($column) {
$name = $type = null;
$column = am(array('null' => true), $column);
list($name, $type) = $column;
if (empty($name) || empty($type)) {
trigger_error('Column name or type not defined in schema', E_USER_WARNING);
return null;
}
if (!isset($this->columns[$type])) {
trigger_error("Column type {$type} does not exist", E_USER_WARNING);
return null;
}
$real = $this->columns[$type];
$out = $this->name($name) . ' ' . $real['name'];
if (isset($real['limit']) || isset($real['length'])) {
if (isset($col['length'])) {
$length = $col['length'];
} elseif (isset($real['length'])) {
$length = $real['length'];
} else {
$length = $real['limit'];
}
$out .= '(' . $length . ')';
}
if (isset($column['key']) && $column['key'] == 'primary') {
$out .= ' NOT NULL AUTO_INCREMENT';
} elseif (isset($column['default'])) {
$out .= ' DEFAULT ' . $this->value($column['default'], $type);
} elseif (isset($column['null']) && $column['null'] == true) {
$out .= ' DEFAULT NULL';
} elseif (isset($column['default']) && isset($column['null']) && $column['null'] == false) {
$out .= ' DEFAULT ' . $this->value($column['default'], $type) . ' NOT NULL';
}
return $out;
}
/**
* Enter description here...
*