Same name in other branches

1. 8.9.x core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php \Drupal\Core\Database\Driver\pgsql\Schema::ensureIdentifiersLength()
2. 10 core/modules/pgsql/src/Driver/Database/pgsql/Schema.php \Drupal\pgsql\Driver\Database\pgsql\Schema::ensureIdentifiersLength()
3. 11.x core/modules/pgsql/src/Driver/Database/pgsql/Schema.php \Drupal\pgsql\Driver\Database\pgsql\Schema::ensureIdentifiersLength()

Make sure to limit identifiers according to PostgreSQL compiled in length.

PostgreSQL allows in standard configuration identifiers no longer 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
• seq for sequences

Parameters

string $table_identifier_part: The first argument used to build the identifier string. This usually refers to a table/relation name.

string $column_identifier_part: The second argument used to build the identifier string. This usually refers to one or more column names.

string $tag: The identifier tag. It can be one of 'idx', 'key', 'pkey' or 'seq'.

string $separator: (optional) The separator used to glue together the aforementioned identifier parts. Defaults to '__'.

Return value

string The index/constraint/pkey identifier.

10 calls to Schema::ensureIdentifiersLength()

Schema::addPrimaryKey in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php

Add a primary key.

Schema::addUniqueKey in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php

Add a unique key.

Schema::constraintExists in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php

Helper function: check if a constraint (PK, FK, UK) exists.

Schema::createTableSql in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php

Generate SQL to create a new table from a Drupal schema definition.

Schema::dropIndex in core/modules/pgsql/src/Driver/Database/pgsql/Schema.php

Drop an index.

... See full list

File

core/modules/pgsql/src/Driver/Database/pgsql/Schema.php, line 80

Class

Schema

PostgreSQL implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\pgsql\Driver\Database\pgsql

Code

protected function ensureIdentifiersLength($table_identifier_part, $column_identifier_part, $tag, $separator = '__') {
    $info = $this->getPrefixInfo($table_identifier_part);
    $table_identifier_part = $info['table'];
    $identifierName = implode($separator, [
        $table_identifier_part,
        $column_identifier_part,
        $tag,
    ]);
    // Retrieve the max identifier length which is usually 63 characters
    // but can be altered before PostgreSQL is compiled so we need to check.
    if (empty($this->maxIdentifierLength)) {
        $this->maxIdentifierLength = $this->connection
            ->query("SHOW max_identifier_length")
            ->fetchField();
    }
    if (strlen($identifierName) > $this->maxIdentifierLength) {
        $saveIdentifier = '"drupal_' . $this->hashBase64($identifierName) . '_' . $tag . '"';
    }
    else {
        $saveIdentifier = $identifierName;
    }
    return $saveIdentifier;
}

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