private function _gatherRelationJoinColumns($joinColumns, $theJoinTable, $class, $mapping, &$primaryKeyColumns, &$uniqueConstraints)
{
$localColumns = array();
$foreignColumns = array();
$fkOptions = array();
foreach ($joinColumns as $joinColumn) {
$columnName = $joinColumn['name'];
$referencedFieldName = $class->getFieldName($joinColumn['referencedColumnName']);
if ( ! $class->hasField($referencedFieldName)) {
throw new \Doctrine\ORM\ORMException(
"Column name `".$joinColumn['referencedColumnName']."` referenced for relation from ".
$mapping['sourceEntity'] . " towards ". $mapping['targetEntity'] . " does not exist."
);
}
$primaryKeyColumns[] = $columnName;
$localColumns[] = $columnName;
$foreignColumns[] = $joinColumn['referencedColumnName'];
if ( ! $theJoinTable->hasColumn($joinColumn['name'])) {
// Only add the column to the table if it does not exist already.
// It might exist already if the foreign key is mapped into a regular
// property as well.
$fieldMapping = $class->getFieldMapping($referencedFieldName);
$columnDef = null;
if (isset($joinColumn['columnDefinition'])) {
$columnDef = $joinColumn['columnDefinition'];
} else if (isset($fieldMapping['columnDefinition'])) {
$columnDef = $fieldMapping['columnDefinition'];
}
$columnOptions = array('notnull' => false, 'columnDefinition' => $columnDef);
if (isset($joinColumn['nullable'])) {
$columnOptions['notnull'] = !$joinColumn['nullable'];
}
if ($fieldMapping['type'] == "string") {
$columnOptions['length'] = $fieldMapping['length'];
} else if ($fieldMapping['type'] == "decimal") {
$columnOptions['scale'] = $fieldMapping['scale'];
$columnOptions['precision'] = $fieldMapping['precision'];
}
$theJoinTable->addColumn(
$columnName, $class->getTypeOfColumn($joinColumn['referencedColumnName']), $columnOptions
);
}
if (isset($joinColumn['unique']) && $joinColumn['unique'] == true) {
$uniqueConstraints[] = array('columns' => array($columnName));
}
if (isset($joinColumn['onUpdate'])) {
$fkOptions['onUpdate'] = $joinColumn['onUpdate'];
}
if (isset($joinColumn['onDelete'])) {
$fkOptions['onDelete'] = $joinColumn['onDelete'];
}
}
$theJoinTable->addUnnamedForeignKeyConstraint(
$class->getTableName(), $localColumns, $foreignColumns, $fkOptions
);
}