MongoCursor::doQuery

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MongoCursor::doQuery — Execute the query.

Descrizione

protected void MongoCursor::doQuery ( void )

Avviso

Please do not use me.

This function actually queries the database. All queries and commands go through this function. Thus, this function can be overridden to provide custom query handling.

This handles serializing your query, sending it to the database, receiving a response, and deserializing it. Thus, if you are planning to override this, your code should probably call out to the original to use the existing functionality (see the example below).

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

NULL.

Errori/Eccezioni

Throws MongoConnectionException if it cannot reach the database.

Log delle modifiche

Versione	Descrizione
1.2.11	Emits `E_DEPRECATED` when used.

Esempi

Example #1 MongoCursor::doQuery() example

You could override this function to attempt a query on a secondary and, if that fails, try it again on the primary.


<?php

class MyCursor extends MongoCursor {

    protected function doQuery() {

        $this->slaveOkay();

        try {
            MongoCursor::doQuery();
        }
        catch(MongoCursorException $e) {
            $this->slaveOkay(false);
            MongoCursor::doQuery();
        }
    }
}

?>