/**
* Transform a model descriptor to a table descriptor.
*
* @param ModelDescriptor $descriptor
* @return RecessTableDescriptor
*/
function modelToTableDescriptor(ModelDescriptor $descriptor)
{
Library::import('recess.database.pdo.RecessTableDescriptor');
Library::import('recess.database.pdo.RecessColumnDescriptor');
$tableDescriptor = new RecessTableDescriptor();
$tableDescriptor->name = $descriptor->getTable();
foreach ($descriptor->properties as $property) {
$tableDescriptor->addColumn($property->name, $property->type, true, $property->isPrimaryKey, array(), $property->isAutoIncrement ? array('autoincrement' => true) : array());
}
return $tableDescriptor;
}
/**
* Sanity check and semantic sugar from higher level
* representation of table pushed down to the RDBMS
* representation of the table.
*
* @param string $table
* @param RecessTableDescriptor $descriptor
*/
function cascadeTableDescriptor($table, RecessTableDescriptor $descriptor)
{
$sourceDescriptor = $this->getTableDescriptor($table);
if (!$sourceDescriptor->tableExists) {
$descriptor->tableExists = false;
return $descriptor;
}
$sourceColumns = $sourceDescriptor->getColumns();
$errors = array();
foreach ($descriptor->getColumns() as $column) {
if (isset($sourceColumns[$column->name])) {
if ($column->isPrimaryKey && !$sourceColumns[$column->name]->isPrimaryKey) {
$errors[] = 'Column "' . $column->name . '" is not the primary key in table ' . $table . '.';
}
if ($sourceColumns[$column->name]->type != $column->type) {
$errors[] = 'Column "' . $column->name . '" type "' . $column->type . '" does not match database column type "' . $sourceColumns[$column->name]->type . '".';
}
} else {
$errors[] = 'Column "' . $column->name . '" does not exist in table ' . $table . '.';
}
}
if (!empty($errors)) {
throw new RecessException(implode(' ', $errors), get_defined_vars());
} else {
return $sourceDescriptor;
}
}
/**
* Given a Table Definition, return the CREATE TABLE SQL statement
* in the Sqlite's syntax.
*
* @param RecessTableDescriptor $tableDescriptor
*/
function createTableSql(RecessTableDescriptor $definition)
{
$sql = 'CREATE TABLE ' . $definition->name;
$columnSql = null;
foreach ($definition->getColumns() as $column) {
if (isset($columnSql)) {
$columnSql .= ', ';
}
$columnSql .= "\n\t" . $column->name . ' ' . strtoupper($column->type);
if ($column->isPrimaryKey) {
$columnSql .= ' PRIMARY KEY';
if (isset($column->options['autoincrement'])) {
$columnSql .= ' AUTOINCREMENT';
}
}
}
$columnSql .= "\n";
return $sql . ' (' . $columnSql . ')';
}
