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ENHANCEMENT Added MSSQLDatabase::fulltextIndexExists() to check if an index exists before dropping it in MSSQLDatabase::alterTableAlterColumn()

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BUGFIX Fixed alterting field types with a fulltext index on a table - an error would complain that a fulltext index exists, which needs to be dropped before the column can be altered
This commit is contained in:
Sean Harvey 2009-12-07 05:38:26 +00:00
parent 5bd3bcac67
commit 3bba7b9ef1
1 changed files with 17 additions and 1 deletions
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18
code/MSSQLDatabase.php
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@ -440,7 +440,6 @@ class MSSQLDatabase extends SS_Database {
// First, we split the column specifications into parts
// TODO: this returns an empty array for the following string: int(11) not null auto_increment
// on second thoughts, why is an auto_increment field being passed through?
$pattern = '/^([\w()]+)\s?((?:not\s)?null)?\s?(default\s[\w\']+)?\s?(check\s?[\w()\'",\s]+)?$/i';
$matches=Array();
preg_match($pattern, $colSpec, $matches);
@ -456,6 +455,11 @@ class MSSQLDatabase extends SS_Database {
//This also means we can use internal indexes if they happen to appear.
$alterCol = "\nDROP INDEX \"$tableName\"." . $indexList[$colName]['indexname'] . ';';
}
// fulltext indexes need to be dropped if alterting a table
if($this->fulltextIndexExists($tableName)) {
$alterCol .= "\nDROP FULLTEXT INDEX ON \"$tableName\";";
}
$prefix="ALTER TABLE \"" . $tableName . "\" ";
@ -1260,6 +1264,18 @@ class MSSQLDatabase extends SS_Database {
$this->query("SET IDENTITY_INSERT \"$table\" " . ($allow ? "ON" : "OFF"));
}
/**
* Check if a fulltext index exists on a particular table name.
* @return boolean TRUE index exists | FALSE index does not exist
*/
function fulltextIndexExists($tableName) {
return (bool) $this->query("
SELECT 1 FROM sys.fulltext_indexes i
JOIN sys.objects o ON i.object_id = o.object_id
WHERE o.name = '$tableName'
")->value();
}
/**
* Returns a SQL fragment for querying a fulltext search index
* @param $fields array The list of field names to search on