/**
*
* @param ArrayObject $metadata_columns
* @return ColumnModel
*/
public static function getColumnModelFromMetadata(ArrayObject $metadata_columns)
{
$cm = new ColumnModel();
$cm->setMetatadata($metadata_columns);
foreach ($metadata_columns as $name => $meta) {
$column = new Column($name);
$column->setType(self::getColumnTypeByMetadataType($meta->getDataType()));
$column->setVirtual(false);
$cm->add($column);
}
return $cm;
}
/**
* Add a new column to the column model
*
* @throws Exception\InvalidArgumentException when mode is not supported
* @throws Exception\DuplicateColumnException when column name already exists
* @throws Exception\ColumnNotFoundException when after_column does not exists
* @param Column $column
* @param string $after_column add the new column after this existing one
* @param string $mode change after to before (see self::ADD_COLUMN_AFTER, self::ADD_COLUMN_BEFORE)
* @return ColumnModel
*/
public function add(Column $column, $after_column = null, $mode = self::ADD_COLUMN_AFTER)
{
$name = $column->getName();
if ($this->exists($name)) {
$msg = "Cannot add column '{$name}', it's already present in column model";
throw new Exception\DuplicateColumnException(__METHOD__ . ': ' . $msg);
}
if ($after_column !== null) {
// Test existence of column
if (!$this->exists($after_column)) {
$msg = "Cannot add column '{$name}' after '{$after_column}', column does not exists.";
throw new Exception\ColumnNotFoundException(__METHOD__ . ': ' . $msg);
}
if (!in_array($mode, array(self::ADD_COLUMN_BEFORE, self::ADD_COLUMN_AFTER))) {
$msg = "Cannot add column '{$name}', invalid mode specified '{$mode}'";
throw new Exception\InvalidArgumentException(__METHOD__ . ': ' . $msg);
}
$new_columns = new ArrayObject();
foreach ($this->columns as $key => $col) {
if ($mode == self::ADD_COLUMN_BEFORE && $key == $after_column) {
$new_columns->offsetSet($name, $column);
}
$new_columns->offsetSet($key, $col);
if ($mode == self::ADD_COLUMN_AFTER && $key == $after_column) {
$new_columns->offsetSet($name, $column);
}
}
$this->columns->exchangeArray($new_columns);
} else {
// Simply append
$this->columns->offsetSet($name, $column);
}
return $this;
}
