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<?php
// $Id$
/**
* @ingroup database
* @{
*/
/**
* @file
* Query code for MySQL embedded database engine.
*/
class InsertQuery_mysql extends InsertQuery {
public function execute() {
if (!$this->preExecute()) {
return NULL;
}
// If we're selecting from a SelectQuery, finish building the query and
// pass it back, as any remaining options are irrelevant.
if (empty($this->fromQuery)) {
$max_placeholder = 0;
$values = array();
foreach ($this->insertValues as $insert_values) {
foreach ($insert_values as $value) {
$values[':db_insert_placeholder_' . $max_placeholder++] = $value;
}
}
}
else {
$values = $this->fromQuery->getArguments();
}
$last_insert_id = $this->connection->query((string) $this, $values, $this->queryOptions);
// Re-initialize the values array so that we can re-use this query.
$this->insertValues = array();
return $last_insert_id;
}
public function __toString() {
// Create a comments string to prepend to the query.
$comments = (!empty($this->comments)) ? '/* ' . implode('; ', $this->comments) . ' */ ' : '';
// Default fields are always placed first for consistency.
$insert_fields = array_merge($this->defaultFields, $this->insertFields);
// If we're selecting from a SelectQuery, finish building the query and
// pass it back, as any remaining options are irrelevant.
if (!empty($this->fromQuery)) {
return $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') ' . $this->fromQuery;
}
$query = $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') VALUES ';
$max_placeholder = 0;
$values = array();
if (count($this->insertValues)) {
foreach ($this->insertValues as $insert_values) {
$placeholders = array();
// Default fields aren't really placeholders, but this is the most convenient
// way to handle them.
$placeholders = array_pad($placeholders, count($this->defaultFields), 'default');
$new_placeholder = $max_placeholder + count($insert_values);
for ($i = $max_placeholder; $i < $new_placeholder; ++$i) {
$placeholders[] = ':db_insert_placeholder_' . $i;
}
$max_placeholder = $new_placeholder;
$values[] = '(' . implode(', ', $placeholders) . ')';
}
}
else {
// If there are no values, then this is a default-only query. We still need to handle that.
$placeholders = array_fill(0, count($this->defaultFields), 'default');
$values[] = '(' . implode(', ', $placeholders) . ')';
}
$query .= implode(', ', $values);
return $query;
}
}
class TruncateQuery_mysql extends TruncateQuery {
public function __toString() {
// TRUNCATE is actually a DDL statement on MySQL, and DDL statements are
// not transactional, and result in an implicit COMMIT. When we are in a
// transaction, fallback to the slower, but transactional, DELETE.
if ($this->connection->inTransaction()) {
// Create a comments string to prepend to the query.
$comments = (!empty($this->comments)) ? '/* ' . implode('; ', $this->comments) . ' */ ' : '';
return $comments . 'DELETE FROM {' . $this->connection->escapeTable($this->table) . '}';
}
else {
return parent::__toString();
}
}
}
/**
* @} End of "ingroup database".
*/
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