doctrine / orm

                            );

                            foreach ($idMapping['joinColumns'] as $joinColumn) {

                                if (isset($targetEntity->fieldMappings[$joinColumn['referencedColumnName']])) {

                                    $columnName = $this->quoteStrategy->getJoinColumnName(

                                        $joinColumn,

                                        $class,

                                        $this->platform

                                    );

                                    $pkColumns[]           = $columnName;

                                    $inheritedKeyColumns[] = $columnName;

                                }

                            }

                        }

                    }

            foreach ($class->identifier as $identifierField) {

                if (isset($class->fieldMappings[$identifierField])) {

                    $pkColumns[] = $this->quoteStrategy->getColumnName($identifierField, $class, $this->platform);

                } elseif (isset($class->associationMappings[$identifierField])) {

                    /* @var $assoc \Doctrine\ORM\Mapping\OneToOne */

                    $assoc = $class->associationMappings[$identifierField];

                    foreach ($assoc['joinColumns'] as $joinColumn) {

                        $pkColumns[] = $this->quoteStrategy->getJoinColumnName($joinColumn, $class, $this->platform);

                    }

                }

            }

            if ( ! $table->hasIndex('primary')) {