public function getSql()
{
$db = Connection::instance();
$name = $this->schema->getName();
$primary_key = $this->schema->getPrimaryKey();
$columns = $this->schema->getColumns();
$unique_keys = $this->schema->getUniqueKeys();
$keys = $this->schema->getKeys();
if (!$this->schema->validate()) {
throw new RuntimeException("Invalid database table schema ('{$this->schema->getName()}')");
}
$charset_collate = '';
if ($charset = $db->getCharset()) {
$charset_collate = "DEFAULT CHARACTER SET {$charset}";
}
if ($collate = $db->getCollate()) {
$charset_collate .= " COLLATE {$collate}";
}
$sql = "CREATE TABLE IF NOT EXISTS {$db->getTablePrefix()}{$name} (";
foreach ($columns as $column => $settings) {
$sql .= "\n {$column} {$settings},";
}
// double space after pk
$sql .= "\n PRIMARY KEY ({$primary_key}),";
foreach ($unique_keys as $name => $key) {
$sql .= "\n UNIQUE KEY {$name} ({$key}),";
}
foreach ($keys as $name => $key) {
$sql .= "\n KEY {$name} ({$key}),";
}
$sql = trim($sql, ',') . "\n) {$charset_collate};";
return $sql;
}
/**
* Fetches column metadata from the database.
*
* @return array
*/
protected function fetchColumns()
{
$cache_key = 'wpapp_db_col_' . get_current_blog_id() . $this->tableName;
$cached = wp_cache_get($cache_key, 'dbmeta', false, $found);
if ($found && $cached) {
return $cached;
}
$results = (array) $this->connection->wpdb()->get_results("select C.COLUMN_NAME, C.COLUMN_DEFAULT, C.DATA_TYPE, C.CHARACTER_MAXIMUM_LENGTH, " . "C.NUMERIC_PRECISION, C.IS_NULLABLE, C.COLUMN_KEY, C.EXTRA, C.COLLATION_NAME " . "from INFORMATION_SCHEMA.COLUMNS as C where C.TABLE_NAME = '{$this->tableName}'");
$columns = array();
foreach ($results as $data) {
$column = new Table\Column($data);
$columns[$column->name] = $column;
}
wp_cache_set($cache_key, $columns, 'dbmeta', 600);
return $columns;
}
public function install()
{
if (!$this->isInstalled()) {
$command = new Command\Create($this);
$command();
if (Connection::instance()->isTableInstalled($this->tableName, true)) {
$this->installed = true;
}
}
return $this->installed;
}
