protected function Schema::buildTableNameCondition in Drupal 8

Same name in this branch

1. 8 core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::buildTableNameCondition()
2. 8 core/lib/Drupal/Core/Database/Driver/mysql/Schema.php \Drupal\Core\Database\Driver\mysql\Schema::buildTableNameCondition()

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::buildTableNameCondition()

Build a condition to match a table name against a standard information_schema.

The information_schema is a SQL standard that provides information about the database server and the databases, schemas, tables, columns and users within it. This makes information_schema a useful tool to use across the drupal database drivers and is used by a few different functions. The function below describes the conditions to be meet when querying information_schema.tables for drupal tables or information associated with drupal tables. Even though this is the standard method, not all databases follow standards and so this method should be overwritten by a database driver if the database provider uses alternate methods. Because information_schema.tables is used in a few different functions, a database driver will only need to override this function to make all the others work. For example see core/includes/databases/mysql/schema.inc.

Parameters

$table_name: The name of the table in question.

$operator: The operator to apply on the 'table' part of the condition.

$add_prefix: Boolean to indicate whether the table name needs to be prefixed.

Return value

\Drupal\Core\Database\Query\Condition A Condition object.

3 calls to Schema::buildTableNameCondition()

Schema::fieldExists in core/lib/Drupal/Core/Database/Schema.php

Check if a column exists in the given table.

Schema::findTables in core/lib/Drupal/Core/Database/Schema.php

Finds all tables that are like the specified base table name.

Schema::tableExists in core/lib/Drupal/Core/Database/Schema.php

Check if a table exists.

1 method overrides Schema::buildTableNameCondition()

Schema::buildTableNameCondition in core/lib/Drupal/Core/Database/Driver/mysql/Schema.php

Build a condition to match a table name against a standard information_schema.

File

core/lib/Drupal/Core/Database/Schema.php, line 146

Class

Schema

Provides a base implementation for Database Schema.

Namespace

Drupal\Core\Database

Code

protected function buildTableNameCondition($table_name, $operator = '=', $add_prefix = TRUE) {
  $info = $this->connection
    ->getConnectionOptions();

  // Retrieve the table name and schema
  $table_info = $this
    ->getPrefixInfo($table_name, $add_prefix);
  $condition = $this->connection
    ->condition('AND');
  $condition
    ->condition('table_catalog', $info['database']);
  $condition
    ->condition('table_schema', $table_info['schema']);
  $condition
    ->condition('table_name', $table_info['table'], $operator);
  return $condition;
}