Generates a temporary table name.

The method accounts for a maximum table name length of 64 characters.

Parameters

string $table_name: The initial table name.

string $prefix: (optional) The prefix to use for the new table name. Defaults to 'tmp_'.

Return value

string The final table name.

1 call to TemporaryTableMapping::getTempTableName()

TemporaryTableMapping::generateFieldTableName in core/lib/Drupal/Core/Entity/Sql/TemporaryTableMapping.php

Generates a safe and unambiguous field table name.

File

core/lib/Drupal/Core/Entity/Sql/TemporaryTableMapping.php, line 37

Class

TemporaryTableMapping

Defines a temporary table mapping class.

Namespace

Drupal\Core\Entity\Sql

Code

public static function getTempTableName($table_name, $prefix = 'tmp_') {
    $tmp_table_name = $prefix . $table_name;
    // Limit the string to 48 characters, keeping a 16 characters margin for db
    // prefixes.
    if (strlen($table_name) > 48) {
        $short_table_name = substr($table_name, 0, 34);
        $table_hash = substr(hash('sha256', $table_name), 0, 10);
        $tmp_table_name = $prefix . $short_table_name . $table_hash;
    }
    return $tmp_table_name;
}

---