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POOverriding CDbCommand->queryInternal()
 

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  1. POOverriding CDbCommand->queryInternal()
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    <p>An existing yii-Framework application must be migrated to using <i>{pdo_,}sqlsrv</i> to communicate with the SQL-Server Backend as the entire application is being migrated from Lunix to Windows. </p> <p>There are several invocations of (immutable) stored procedures that yield multiple row sets. The legacy mssql-driver luckily ignored the former. Using sqlsrv, one has to use <code>sqlsrv_next_result()</code> on the result handle in order to avoid <code>SQLSTATE[IMSSP]: The active result for the query contains no fields</code> and skip on to the relevant/usable rowset.</p> <p>Being new to yii, I have found no way of introducing an extension to <code>CDbCommand</code> at a low enough level so that AR etc. will still function. My current solution thus directly modifies framework/library code which is obviously not an option once we go into production.</p> <p>This is my modification to the library (starting in CDbCommand.php#515):</p> <pre><code>$retry_hack = false; do { try { $result=$this-&gt;_statement-&gt;$method(); $retry_hack = false; // won't get here on throw } catch (PDOException $e) { // If we do not have any more rowsets we obviously have // a proper exception at this point and just re-throw // it to whomever wants to catch it. if (!($retry_hack = true === $this-&gt;_statement-&gt;nextRowset())) { throw $e; } } } while ($retry_hack); </code></pre> <p>Now my question: how can I introduce this behaviour at a low enough level without having to modify framework/library code?</p>
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    1. USChristian Kiewiet
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      1. USChristian Kiewiet
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    1. COCame across `MultipleActiveResultSets=False` which may be specified in the DSN - it does not solve the problem;
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      1. POOverriding CDbCommand->queryInternal()
      1. USChristian Kiewiet
 

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