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BUGFIX MSSQLDatabase::getIndexSqlDefinition() - before trying to create an index that may exist, check if it exists and drop it if necessary

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ENHANCEMENT Tidied up MSSQLDatabase::alterTable()
MINOR Code formatting fixes
This commit is contained in:
Sean Harvey 2009-10-22 06:51:35 +00:00
parent edfa1dde19
commit eb10888c08
1 changed files with 25 additions and 57 deletions
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68
code/MSSQLDatabase.php
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@ -357,54 +357,25 @@ class MSSQLDatabase extends Database {
*/
public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null, $alteredOptions=null, $advancedOptions=null) {
$fieldSchemas = $indexSchemas = "";
$alterList = array();
$indexList = $this->indexList($tableName);
if($newFields) foreach($newFields as $k => $v) $alterList[] .= "ALTER TABLE \"$tableName\" ADD \"$k\" $v";
$indexList=$this->IndexList($tableName);
if($alteredFields) {
foreach($alteredFields as $k => $v) {
if($alteredFields) foreach($alteredFields as $k => $v) {
$val = $this->alterTableAlterColumn($tableName, $k, $v, $indexList);
if($val!='')
$alterList[] .= $val;
}
if($val != '') $alterList[] .= $val;
}
//DB ABSTRACTION: we need to change the constraints to be a separate 'add' command,
$alterIndexList=Array();
if($alteredIndexes) foreach($alteredIndexes as $v) {
//TODO: I don't think that these drop index commands will work:
if($v['type']!='fulltext'){
if(is_array($v))
$alterIndexList[] = 'DROP INDEX ix_' . strtolower($tableName) . '_' . strtolower($v['value']) . ' ON ' . $tableName . ';';
else
$alterIndexList[] = 'DROP INDEX ix_' . strtolower($tableName) . '_' . strtolower(trim($v, '()')) . ' ON ' . $tableName . ';';
if(is_array($v))
$k=$v['value'];
else $k=trim($v, '()');
$alterIndexList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
}
}
//Add the new indexes:
if($newIndexes) foreach($newIndexes as $k=>$v){
$alterIndexList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
}
if($alteredIndexes) foreach($alteredIndexes as $k => $v) $alterList[] .= $this->getIndexSqlDefinition($tableName, $k, $v);
if($newIndexes) foreach($newIndexes as $k =>$v) $alterList[] .= $this->getIndexSqlDefinition($tableName, $k, $v);
if($alterList) {
foreach($alterList as $this_alteration){
if($this_alteration!=''){
$this->query($this_alteration);
foreach($alterList as $alteration) {
if($alteration != '') {
$this->query($alteration);
}
}
}
foreach($alterIndexList as $alteration) {
if($alteration!='') $this->query($alteration);
}
}
/**
@ -664,7 +635,7 @@ class MSSQLDatabase extends Database {
$this->query($this->getIndexSqlDefinition($tableName, $indexName, $indexSpec));
}
/*
/**
* This takes the index spec which has been provided by a class (ie static $indexes = blah blah)
* and turns it into a proper string.
* Some indexes may be arrays, such as fulltext and unique indexes, and this allows database-specific
@ -687,13 +658,14 @@ class MSSQLDatabase extends Database {
}
protected function getIndexSqlDefinition($tableName, $indexName, $indexSpec) {
if(!is_array($indexSpec)) {
$indexSpec=trim($indexSpec, '()');
$bits=explode(',', $indexSpec);
$indexes="\"" . implode("\",\"", $bits) . "\"";
$index = 'ix_' . $tableName . '_' . $indexName;
return 'create index ix_' . $tableName . '_' . $indexName . " ON \"" . $tableName . "\" (" . $indexes . ");";
$drop = "IF EXISTS (SELECT name FROM sys.indexes WHERE name = '$index') DROP INDEX $index ON \"" . $tableName . "\";";
return "$drop CREATE INDEX $index ON \"" . $tableName . "\" (" . $indexes . ");";
} else {
//create a type-specific index
if($indexSpec['type'] == 'fulltext') {
@ -707,19 +679,15 @@ class MSSQLDatabase extends Database {
$result=$this->query("SELECT object_id FROM sys.fulltext_indexes WHERE object_id=object_id('$tableName');")->first();
$drop = '';
if($result)
$drop="DROP FULLTEXT INDEX ON \"" . $tableName . "\";";
return $drop . "CREATE FULLTEXT INDEX ON \"$tableName\" ({$indexSpec['value']}) " .
"KEY INDEX $primary_key WITH CHANGE_TRACKING AUTO;";
if($result) $drop = "DROP FULLTEXT INDEX ON \"" . $tableName . "\";";
return $drop . "CREATE FULLTEXT INDEX ON \"$tableName\" ({$indexSpec['value']}) KEY INDEX $primary_key WITH CHANGE_TRACKING AUTO;";
}
}
if($indexSpec['type'] == 'unique') {
return 'CREATE UNIQUE INDEX ix_' . $tableName . '_' . $indexName . " ON \"" . $tableName . "\" (\"" . $indexSpec['value'] . "\");";
}
if($indexSpec['type']=='unique')
return 'create unique index ix_' . $tableName . '_' . $indexName . " ON \"" . $tableName . "\" (\"" . $indexSpec['value'] . "\");";
}
}
function getDbSqlDefinition($tableName, $indexName, $indexSpec){