class InsertQuery_mysql in Drupal 7

@file Query code for MySQL embedded database engine.

Hierarchy

• class \Query implements QueryPlaceholderInterface
  • class \InsertQuery
    • class \InsertQuery_mysql

Related topics

Database abstraction layer

Allow the use of different database servers using the same code base.

File

includes/database/mysql/query.inc, line 14

Query code for MySQL embedded database engine.

class InsertQuery_mysql extends InsertQuery {
  public function execute() {
    if (!$this
      ->preExecute()) {
      return NULL;
    }

    // If we're selecting from a SelectQuery, finish building the query and
    // pass it back, as any remaining options are irrelevant.
    if (empty($this->fromQuery)) {
      $max_placeholder = 0;
      $values = array();
      foreach ($this->insertValues as $insert_values) {
        foreach ($insert_values as $value) {
          $values[':db_insert_placeholder_' . $max_placeholder++] = $value;
        }
      }
    }
    else {
      $values = $this->fromQuery
        ->getArguments();
    }
    $last_insert_id = $this->connection
      ->query((string) $this, $values, $this->queryOptions);

    // Re-initialize the values array so that we can re-use this query.
    $this->insertValues = array();
    return $last_insert_id;
  }
  public function __toString() {

    // Create a sanitized comment string to prepend to the query.
    $comments = $this->connection
      ->makeComment($this->comments);

    // Default fields are always placed first for consistency.
    $insert_fields = array_merge($this->defaultFields, $this->insertFields);
    if (method_exists($this->connection, 'escapeFields')) {
      $insert_fields = $this->connection
        ->escapeFields($insert_fields);
    }

    // If we're selecting from a SelectQuery, finish building the query and
    // pass it back, as any remaining options are irrelevant.
    if (!empty($this->fromQuery)) {
      $insert_fields_string = $insert_fields ? ' (' . implode(', ', $insert_fields) . ') ' : ' ';
      return $comments . 'INSERT INTO {' . $this->table . '}' . $insert_fields_string . $this->fromQuery;
    }
    $query = $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') VALUES ';
    $max_placeholder = 0;
    $values = array();
    if (count($this->insertValues)) {
      foreach ($this->insertValues as $insert_values) {
        $placeholders = array();

        // Default fields aren't really placeholders, but this is the most convenient
        // way to handle them.
        $placeholders = array_pad($placeholders, count($this->defaultFields), 'default');
        $new_placeholder = $max_placeholder + count($insert_values);
        for ($i = $max_placeholder; $i < $new_placeholder; ++$i) {
          $placeholders[] = ':db_insert_placeholder_' . $i;
        }
        $max_placeholder = $new_placeholder;
        $values[] = '(' . implode(', ', $placeholders) . ')';
      }
    }
    else {

      // If there are no values, then this is a default-only query. We still need to handle that.
      $placeholders = array_fill(0, count($this->defaultFields), 'default');
      $values[] = '(' . implode(', ', $placeholders) . ')';
    }
    $query .= implode(', ', $values);
    return $query;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
InsertQuery::$defaultFields	protected	property	An array of fields that should be set to their database-defined defaults.
InsertQuery::$fromQuery	protected	property	A SelectQuery object to fetch the rows that should be inserted.
InsertQuery::$insertFields	protected	property	An array of fields on which to insert.
InsertQuery::$insertValues	protected	property	A nested array of values to insert.
InsertQuery::$table	protected	property	The table on which to insert.
InsertQuery::fields	public	function	Adds a set of field->value pairs to be inserted.
InsertQuery::from	public	function	Sets the fromQuery on this InsertQuery object.
InsertQuery::preExecute	public	function	Preprocesses and validates the query.
InsertQuery::useDefaults	public	function	Specifies fields for which the database defaults should be used.
InsertQuery::values	public	function	Adds another set of values to the query to be inserted.
InsertQuery::__construct	public	function	Constructs an InsertQuery object. Overrides Query::__construct
InsertQuery_mysql::execute	public	function	Executes the insert query. Overrides InsertQuery::execute
InsertQuery_mysql::__toString	public	function	Implements PHP magic __toString method to convert the query to a string. Overrides InsertQuery::__toString
Query::$comments	protected	property	An array of comments that can be prepended to a query.
Query::$connection	protected	property	The connection object on which to run this query.
Query::$connectionKey	protected	property	The key of the connection object.
Query::$connectionTarget	protected	property	The target of the connection object.
Query::$nextPlaceholder	protected	property	The placeholder counter.
Query::$queryOptions	protected	property	The query options to pass on to the connection object.
Query::$uniqueIdentifier	protected	property	A unique identifier for this query object.
Query::comment	public	function	Adds a comment to the query.
Query::getComments	public	function	Returns a reference to the comments array for the query.
Query::nextPlaceholder	public	function	Gets the next placeholder value for this query object. Overrides QueryPlaceholderInterface::nextPlaceholder
Query::uniqueIdentifier	public	function	Returns a unique identifier for this object. Overrides QueryPlaceholderInterface::uniqueIdentifier
Query::__clone	public	function	Implements the magic __clone function.	1
Query::__sleep	public	function	Implements the magic __sleep function to disconnect from the database.
Query::__wakeup	public	function	Implements the magic __wakeup function to reconnect to the database.