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Added function to dynamically add missing fields - currently only number fields are missing!

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This commit is contained in:
Andre Lorbach 2010-04-13 17:40:09 +02:00
parent c428440c90
commit c06271ff8a
1 changed files with 77 additions and 2 deletions
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79
src/classes/logstreamdb.class.php
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@ -601,6 +601,9 @@ class LogStreamDB extends LogStream {
$myQuery = mysql_query($szSql, $this->_dbhandle);
if ($myQuery)
{
// Free res!
mysql_free_result($myQuery);
// Return success
return SUCCESS;
}
@ -1235,8 +1238,27 @@ class LogStreamDB extends LogStream {
$this->_myDBQuery = mysql_query($szSql, $this->_dbhandle);
if ( !$this->_myDBQuery )
{
$this->PrintDebugError("Invalid SQL: ".$szSql);
return ERROR_DB_QUERYFAILED;
// Check if a field is missing!
if ( mysql_errno() == 1054 )
{
// Handle missing field and try again!
if ( $this->HandleMissingField() == SUCCESS )
{
$this->_myDBQuery = mysql_query($szSql, $this->_dbhandle);
if ( !$this->_myDBQuery )
{
$this->PrintDebugError("Invalid SQL: ".$szSql);
return ERROR_DB_QUERYFAILED;
}
}
else // Failed to add field dynamically
return ERROR_DB_QUERYFAILED;
}
else
{
$this->PrintDebugError("Invalid SQL: ".$szSql);
return ERROR_DB_QUERYFAILED;
}
}
else
{
@ -1416,7 +1438,60 @@ class LogStreamDB extends LogStream {
*/
}
/*
* Returns the number of possible records by using a select count statement!
*/
private function HandleMissingField()
{
global $dbmapping, $fields;
// Get Err description
$errdesc = mysql_error();
// check matching of error msg!
if ( preg_match("/Unknown column '(.*?)' in '(.*?)'$/", $errdesc, $errOutArr ) )
{
$szTableType = $this->_logStreamConfigObj->DBTableType;
// Loop through all fields to see which one is missing!
foreach ( $this->_arrProperties as $myproperty )
{
if ( isset($dbmapping[$szTableType]['DBMAPPINGS'][$myproperty]) && $errOutArr[1] == $dbmapping[$szTableType]['DBMAPPINGS'][$myproperty] )
{
// Create SQL Numeric field
$szUpdateSql = "";
if ( $fields[$myproperty]['FieldType'] == FILTER_TYPE_NUMBER )
$szUpdateSql = "ALTER TABLE `" . $this->_logStreamConfigObj->DBTableName . "` ADD `" . $dbmapping[$szTableType]['DBMAPPINGS'][$myproperty] . "` int(11) NOT NULL DEFAULT '0'";
if ( strlen($szUpdateSql) > 0 )
{
// Update Table schema now!
$myQuery = mysql_query($szUpdateSql, $this->_dbhandle);
if (!$myQuery)
{
// Return failure!
$this->PrintDebugError("ER_BAD_FIELD_ERROR - Dynamically Adding field '" . $dbmapping[$szTableType]['DBMAPPINGS'][$myproperty] . "' with Statement failed: '" . $szUpdateSql . "'");
return ERROR_DB_DBFIELDNOTFOUND;
}
}
else
{
// Return failure!
$this->PrintDebugError("ER_BAD_FIELD_ERROR - Field '" . $dbmapping[$szTableType]['DBMAPPINGS'][$myproperty] . "' is missing has to be added manually to the database layout!'");
return ERROR_DB_DBFIELDNOTFOUND;
}
}
}
// Reached this point means success!
return SUCCESS;
}
else
$this->PrintDebugError("ER_BAD_FIELD_ERROR - SQL Statement: ".$szSql);
return ERROR_DB_DBFIELDNOTFOUND;
}
// --- End of Class!
}
?>