silverstripe-sqlite3/code/SQLite3QueryBuilder.php
Damian Mooyman b3b82810a0 API Upgraded module to use new database ORM
API Use SQLite3::version to directly get connection version
2014-07-11 09:06:33 +12:00

50 lines
1.5 KiB
PHP

<?php
/**
* Builds a SQL query string from a SQLExpression object
*
* @package SQLite3
*/
class SQLite3QueryBuilder extends DBQueryBuilder {
protected function buildInsertQuery(SQLInsert $query, array &$parameters) {
// Multi-row insert requires SQLite specific syntax prior to 3.7.11
// For backwards compatibility reasons include the "union all select" syntax
$nl = $this->getSeparator();
$into = $query->getInto();
// Column identifiers
$columns = $query->getColumns();
// Build all rows
$rowParts = array();
foreach($query->getRows() as $row) {
// Build all columns in this row
$assignments = $row->getAssignments();
// Join SET components together, considering parameters
$parts = array();
foreach($columns as $column) {
// Check if this column has a value for this row
if(isset($assignments[$column])) {
// Assigment is a single item array, expand with a loop here
foreach($assignments[$column] as $assignmentSQL => $assignmentParameters) {
$parts[] = $assignmentSQL;
$parameters = array_merge($parameters, $assignmentParameters);
break;
}
} else {
// This row is missing a value for a column used by another row
$parts[] = '?';
$parameters[] = null;
}
}
$rowParts[] = implode(', ', $parts);
}
$columnSQL = implode(', ', $columns);
$sql = "INSERT INTO {$into}{$nl}($columnSQL){$nl}SELECT " . implode("{$nl}UNION ALL SELECT ", $rowParts);
return $sql;
}
}