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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Persisters\Entity;
use Doctrine\Common\Collections\Criteria;
use Doctrine\ORM\Internal\SQLResultCasing;
use Doctrine\ORM\Mapping\AssociationMapping;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\ORM\Utility\PersisterHelper;
use function array_flip;
use function array_intersect;
use function array_map;
use function array_unshift;
use function implode;
use function strval;
/**
* Persister for entities that participate in a hierarchy mapped with the
* SINGLE_TABLE strategy.
*
* @link https://martinfowler.com/eaaCatalog/singleTableInheritance.html
*/
class SingleTablePersister extends AbstractEntityInheritancePersister
{
use SQLResultCasing;
protected function getDiscriminatorColumnTableName(): string
{
return $this->class->getTableName();
}
protected function getSelectColumnsSQL(): string
{
$columnList = [];
if ($this->currentPersisterContext->selectColumnListSql !== null) {
return $this->currentPersisterContext->selectColumnListSql;
}
$columnList[] = parent::getSelectColumnsSQL();
$rootClass = $this->em->getClassMetadata($this->class->rootEntityName);
$tableAlias = $this->getSQLTableAlias($rootClass->name);
// Append discriminator column
$discrColumn = $this->class->getDiscriminatorColumn();
$discrColumnName = $discrColumn->name;
$discrColumnType = $discrColumn->type;
$columnList[] = $tableAlias . '.' . $discrColumnName;
$resultColumnName = $this->getSQLResultCasing($this->platform, $discrColumnName);
$this->currentPersisterContext->rsm->setDiscriminatorColumn('r', $resultColumnName);
$this->currentPersisterContext->rsm->addMetaResult('r', $resultColumnName, $discrColumnName, false, $discrColumnType);
// Append subclass columns
foreach ($this->class->subClasses as $subClassName) {
$subClass = $this->em->getClassMetadata($subClassName);
// Regular columns
foreach ($subClass->fieldMappings as $fieldName => $mapping) {
if (isset($mapping->inherited)) {
continue;
}
$columnList[] = $this->getSelectColumnSQL($fieldName, $subClass);
}
// Foreign key columns
foreach ($subClass->associationMappings as $assoc) {
if (! $assoc->isToOneOwningSide() || isset($assoc->inherited)) {
continue;
}
$targetClass = $this->em->getClassMetadata($assoc->targetEntity);
foreach ($assoc->joinColumns as $joinColumn) {
$columnList[] = $this->getSelectJoinColumnSQL(
$tableAlias,
$joinColumn->name,
$this->quoteStrategy->getJoinColumnName($joinColumn, $subClass, $this->platform),
PersisterHelper::getTypeOfColumn($joinColumn->referencedColumnName, $targetClass, $this->em),
);
}
}
}
$this->currentPersisterContext->selectColumnListSql = implode(', ', $columnList);
return $this->currentPersisterContext->selectColumnListSql;
}
/**
* {@inheritDoc}
*/
protected function getInsertColumnList(): array
{
$columns = parent::getInsertColumnList();
// Add discriminator column to the INSERT SQL
$columns[] = $this->class->getDiscriminatorColumn()->name;
return $columns;
}
protected function getSQLTableAlias(string $className, string $assocName = ''): string
{
return parent::getSQLTableAlias($this->class->rootEntityName, $assocName);
}
/**
* {@inheritDoc}
*/
protected function getSelectConditionSQL(array $criteria, AssociationMapping|null $assoc = null): string
{
$conditionSql = parent::getSelectConditionSQL($criteria, $assoc);
if ($conditionSql) {
$conditionSql .= ' AND ';
}
return $conditionSql . $this->getSelectConditionDiscriminatorValueSQL();
}
protected function getSelectConditionCriteriaSQL(Criteria $criteria): string
{
$conditionSql = parent::getSelectConditionCriteriaSQL($criteria);
if ($conditionSql) {
$conditionSql .= ' AND ';
}
return $conditionSql . $this->getSelectConditionDiscriminatorValueSQL();
}
protected function getSelectConditionDiscriminatorValueSQL(): string
{
$values = array_map($this->conn->quote(...), array_map(
strval(...),
array_flip(array_intersect($this->class->discriminatorMap, $this->class->subClasses)),
));
if ($this->class->discriminatorValue !== null) { // discriminators can be 0
array_unshift($values, $this->conn->quote((string) $this->class->discriminatorValue));
}
$discColumnName = $this->class->getDiscriminatorColumn()->name;
$values = implode(', ', $values);
$tableAlias = $this->getSQLTableAlias($this->class->name);
return $tableAlias . '.' . $discColumnName . ' IN (' . $values . ')';
}
protected function generateFilterConditionSQL(ClassMetadata $targetEntity, string $targetTableAlias): string
{
// Ensure that the filters are applied to the root entity of the inheritance tree
$targetEntity = $this->em->getClassMetadata($targetEntity->rootEntityName);
// we don't care about the $targetTableAlias, in a STI there is only one table.
return parent::generateFilterConditionSQL($targetEntity, $targetTableAlias);
}
}
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