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Fix DBSchema update fails when an ENUM column contains values which are not / no longer part of the field definition (#188)

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Denis
2021-04-01 12:13:52 +02:00
committed by GitHub
parent 216489ab2d
commit 78d82528fc
3 changed files with 71 additions and 7 deletions
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69
core/attributedef.class.inc.php
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@@ -5248,6 +5248,20 @@ class AttributeEnum extends AttributeString
}
protected function GetSQLCol($bFullSpec = false)
{
// Get the definition of the column, including the actual values present in the table
return $this->GetSQLColHelper($bFullSpec, true);
}
/**
* A more versatile version of GetSQLCol
* @since 3.0.0
* @param bool $bFullSpec
* @param bool $bIncludeActualValues
* @param string $sSQLTableName The table where to look for the actual values (may be useful for data synchro tables)
* @return string
*/
protected function GetSQLColHelper($bFullSpec = false, $bIncludeActualValues = false, $sSQLTableName = null)
{
$oValDef = $this->GetValuesDef();
if ($oValDef)
@@ -5258,6 +5272,19 @@ class AttributeEnum extends AttributeString
{
$aValues = array();
}
// Preserve the values already present in the database to ease migrations
if ($bIncludeActualValues)
{
if ($sSQLTableName == null)
{
// No SQL table given, use the one of the attribute
$sHostClass = $this->GetHostClass();
$sSQLTableName = MetaModel::DBGetTable($sHostClass, $this->GetCode());
}
$aValues = array_unique(array_merge($aValues, $this->GetActualValuesInDB($sSQLTableName)));
}
if (count($aValues) > 0)
{
// The syntax used here do matters
@@ -5276,6 +5303,48 @@ class AttributeEnum extends AttributeString
}
}
/**
* @since 3.0.0
* {@inheritDoc}
* @see AttributeDefinition::GetImportColumns()
*/
public function GetImportColumns()
{
// Note: this is used by the Data Synchro to build the "data" table
// Right now the function is not passed the "target" SQL table, but if we improve this in the future
// we may call $this->GetSQLColHelper(true, true, $sDBTable); to take into account the actual 'enum' values
// in this table
return $this->GetSQLColHelper(true, false);
}
/**
* Get the list of the actual 'enum' values present in the database
* @since 3.0.0
* @return string[]
*/
protected function GetActualValuesInDB(string $sDBTable)
{
$aValues = array();
try
{
$sSQL = "SELECT DISTINCT `".$this->GetSQLExpr()."` AS value FROM `$sDBTable`;";
$aValuesInDB = CMDBSource::QueryToArray($sSQL);
foreach($aValuesInDB as $aRow)
{
if ($aRow['value'] !== null)
{
$aValues[] = $aRow['value'];
}
}
}
catch(MySQLException $e)
{
// Never mind, maybe the table does not exist yet (new installation from scratch)
// It seems more efficient to try and ignore errors than to test if the table & column really exists
}
return CMDBSource::Quote($aValues);
}
protected function GetSQLColSpec()
{
$default = $this->ScalarToSQL($this->GetDefaultValue());