protected Schema::ensureIdentifiersLength($identifier)
Make sure to limit identifiers according to PostgreSQL compiled in length.
PostgreSQL allows in standard configuration no longer identifiers than 63 chars for table/relation names, indexes, primary keys, and constraints. So we map all identifiers that are too long to drupal_base64hash_tag, where tag is one of:
- idx for indexes
- key for constraints
- pkey for primary keys
Parameters
$identifiers: The arguments to build the identifier string
Return value
The index/constraint/pkey identifier
File
- core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php, line 57
Class
- Schema
- PostgreSQL implementation of \Drupal\Core\Database\Schema.
Namespace
Drupal\Core\Database\Driver\pgsql
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | protected function ensureIdentifiersLength($identifier) { $args = func_get_args(); $info = $this->getPrefixInfo($identifier); $args[0] = $info['table']; $identifierName = implode('__', $args); // Retrieve the max identifier length which is usually 63 characters // but can be altered before PostgreSQL is compiled so we need to check. $this->maxIdentifierLength = $this->connection->query("SHOW max_identifier_length")->fetchField(); if (strlen($identifierName) > $this->maxIdentifierLength) { $saveIdentifier = '"drupal_' . $this->hashBase64($identifierName) . '_' . $args[2] . '"'; } else { $saveIdentifier = $identifierName; } return $saveIdentifier;} |
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