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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Query\Exec;
use Doctrine\DBAL\Connection;
use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
use Doctrine\DBAL\Types\Type;
use Doctrine\ORM\Query\AST;
use Doctrine\ORM\Query\AST\UpdateStatement;
use Doctrine\ORM\Query\ParameterTypeInferer;
use Doctrine\ORM\Query\SqlWalker;
use Doctrine\ORM\Utility\PersisterHelper;
use function array_merge;
use function array_reverse;
use function array_slice;
use function implode;
/**
* Executes the SQL statements for bulk DQL UPDATE statements on classes in
* Class Table Inheritance (JOINED).
*/
class MultiTableUpdateExecutor extends AbstractSqlExecutor
{
/** @var string */
private $_createTempTableSql;
/** @var string */
private $_dropTempTableSql;
/** @var string */
private $_insertSql;
/** @var mixed[] */
private $_sqlParameters = [];
/** @var int */
private $_numParametersInUpdateClause = 0;
/**
* Initializes a new <tt>MultiTableUpdateExecutor</tt>.
*
* Internal note: Any SQL construction and preparation takes place in the constructor for
* best performance. With a query cache the executor will be cached.
*
* @param UpdateStatement $AST The root AST node of the DQL query.
* @param SqlWalker $sqlWalker The walker used for SQL generation from the AST.
*/
public function __construct(AST\Node $AST, $sqlWalker)
{
$em = $sqlWalker->getEntityManager();
$conn = $em->getConnection();
$platform = $conn->getDatabasePlatform();
$quoteStrategy = $em->getConfiguration()->getQuoteStrategy();
if ($conn instanceof PrimaryReadReplicaConnection) {
$conn->ensureConnectedToPrimary();
}
$updateClause = $AST->updateClause;
$primaryClass = $sqlWalker->getEntityManager()->getClassMetadata($updateClause->abstractSchemaName);
$rootClass = $em->getClassMetadata($primaryClass->rootEntityName);
$updateItems = $updateClause->updateItems;
$tempTable = $platform->getTemporaryTableName($rootClass->getTemporaryIdTableName());
$idColumnNames = $rootClass->getIdentifierColumnNames();
$idColumnList = implode(', ', $idColumnNames);
// 1. Create an INSERT INTO temptable ... SELECT identifiers WHERE $AST->getWhereClause()
$sqlWalker->setSQLTableAlias($primaryClass->getTableName(), 't0', $updateClause->aliasIdentificationVariable);
$this->_insertSql = 'INSERT INTO ' . $tempTable . ' (' . $idColumnList . ')'
. ' SELECT t0.' . implode(', t0.', $idColumnNames);
$rangeDecl = new AST\RangeVariableDeclaration($primaryClass->name, $updateClause->aliasIdentificationVariable);
$fromClause = new AST\FromClause([new AST\IdentificationVariableDeclaration($rangeDecl, null, [])]);
$this->_insertSql .= $sqlWalker->walkFromClause($fromClause);
// 2. Create ID subselect statement used in UPDATE ... WHERE ... IN (subselect)
$idSubselect = 'SELECT ' . $idColumnList . ' FROM ' . $tempTable;
// 3. Create and store UPDATE statements
$classNames = array_merge($primaryClass->parentClasses, [$primaryClass->name], $primaryClass->subClasses);
$i = -1;
foreach (array_reverse($classNames) as $className) {
$affected = false;
$class = $em->getClassMetadata($className);
$updateSql = 'UPDATE ' . $quoteStrategy->getTableName($class, $platform) . ' SET ';
foreach ($updateItems as $updateItem) {
$field = $updateItem->pathExpression->field;
if (
(isset($class->fieldMappings[$field]) && ! isset($class->fieldMappings[$field]['inherited'])) ||
(isset($class->associationMappings[$field]) && ! isset($class->associationMappings[$field]['inherited']))
) {
$newValue = $updateItem->newValue;
if (! $affected) {
$affected = true;
++$i;
} else {
$updateSql .= ', ';
}
$updateSql .= $sqlWalker->walkUpdateItem($updateItem);
if ($newValue instanceof AST\InputParameter) {
$this->_sqlParameters[$i][] = $newValue->name;
++$this->_numParametersInUpdateClause;
}
}
}
if ($affected) {
$this->_sqlStatements[$i] = $updateSql . ' WHERE (' . $idColumnList . ') IN (' . $idSubselect . ')';
}
}
// Append WHERE clause to insertSql, if there is one.
if ($AST->whereClause) {
$this->_insertSql .= $sqlWalker->walkWhereClause($AST->whereClause);
}
// 4. Store DDL for temporary identifier table.
$columnDefinitions = [];
foreach ($idColumnNames as $idColumnName) {
$columnDefinitions[$idColumnName] = [
'notnull' => true,
'type' => Type::getType(PersisterHelper::getTypeOfColumn($idColumnName, $rootClass, $em)),
];
}
$this->_createTempTableSql = $platform->getCreateTemporaryTableSnippetSQL() . ' ' . $tempTable . ' ('
. $platform->getColumnDeclarationListSQL($columnDefinitions) . ', PRIMARY KEY(' . implode(',', $idColumnNames) . '))';
$this->_dropTempTableSql = $platform->getDropTemporaryTableSQL($tempTable);
}
/**
* {@inheritDoc}
*
* @return int
*/
public function execute(Connection $conn, array $params, array $types)
{
// Create temporary id table
$conn->executeStatement($this->_createTempTableSql);
try {
// Insert identifiers. Parameters from the update clause are cut off.
$numUpdated = $conn->executeStatement(
$this->_insertSql,
array_slice($params, $this->_numParametersInUpdateClause),
array_slice($types, $this->_numParametersInUpdateClause)
);
// Execute UPDATE statements
foreach ($this->_sqlStatements as $key => $statement) {
$paramValues = [];
$paramTypes = [];
if (isset($this->_sqlParameters[$key])) {
foreach ($this->_sqlParameters[$key] as $parameterKey => $parameterName) {
$paramValues[] = $params[$parameterKey];
$paramTypes[] = $types[$parameterKey] ?? ParameterTypeInferer::inferType($params[$parameterKey]);
}
}
$conn->executeStatement($statement, $paramValues, $paramTypes);
}
} finally {
// Drop temporary table
$conn->executeStatement($this->_dropTempTableSql);
}
return $numUpdated;
}
}
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