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BUGFIX: delete orphaned records from versioned tables when updating. #5936 (from r110901)

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git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@112866 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Sam Minnee 2010-10-19 03:01:51 +00:00
parent ef36436f75
commit 0b2ed12c63
2 changed files with 86 additions and 3 deletions
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37
core/model/Versioned.php
View File

@ -295,9 +295,9 @@ class Versioned extends DataObjectDecorator {
); );
} }
if(DB::getConn()->hasTable("{$table}_versions")) {
// Fix data that lacks the uniqueness constraint (since this was added later and // Fix data that lacks the uniqueness constraint (since this was added later and
// bugs meant that the constraint was validated) // bugs meant that the constraint was validated)
if(DB::getConn()->hasTable("{$table}_versions")) {
$duplications = DB::query("SELECT MIN(\"ID\") AS \"ID\", \"RecordID\", \"Version\" $duplications = DB::query("SELECT MIN(\"ID\") AS \"ID\", \"RecordID\", \"Version\"
FROM \"{$table}_versions\" GROUP BY \"RecordID\", \"Version\" FROM \"{$table}_versions\" GROUP BY \"RecordID\", \"Version\"
HAVING COUNT(*) > 1"); HAVING COUNT(*) > 1");
@ -308,6 +308,41 @@ class Versioned extends DataObjectDecorator {
DB::query("DELETE FROM \"{$table}_versions\" WHERE \"RecordID\" = {$dup['RecordID']} DB::query("DELETE FROM \"{$table}_versions\" WHERE \"RecordID\" = {$dup['RecordID']}
AND \"Version\" = {$dup['Version']} AND \"ID\" != {$dup['ID']}"); AND \"Version\" = {$dup['Version']} AND \"ID\" != {$dup['ID']}");
} }
// Remove junk which has no data in parent classes. Only needs to run the following
// when versioned data is spread over multiple tables
if(!$isRootClass && ($versionedTables = ClassInfo::dataClassesFor($table))) {
foreach($versionedTables as $child) {
if($table == $child) break; // only need subclasses
$count = DB::query("
SELECT COUNT(*) FROM \"{$table}_versions\"
LEFT JOIN \"{$child}_versions\"
ON \"{$child}_versions\".RecordID = \"{$table}_versions\".RecordID
AND \"{$child}_versions\".Version = \"{$table}_versions\".Version
WHERE \"{$child}_versions\".ID IS NULL
")->value();
if($count > 0) {
DB::alteration_message("Removing orphaned versioned records", "deleted");
$effectedIDs = DB::query("
SELECT \"{$table}_versions\".ID FROM \"{$table}_versions\"
LEFT JOIN \"{$child}_versions\"
ON \"{$child}_versions\".RecordID = \"{$table}_versions\".RecordID
AND \"{$child}_versions\".Version = \"{$table}_versions\".Version
WHERE \"{$child}_versions\".ID IS NULL
")->column();
if(is_array($effectedIDs)) {
foreach($effectedIDs as $key => $value) {
DB::query("DELETE FROM \"{$table}_versions\" WHERE \"{$table}_versions\".ID = '$value'");
}
}
}
}
}
} }
DB::requireTable("{$table}_versions", $versionFields, $versionIndexes); DB::requireTable("{$table}_versions", $versionFields, $versionIndexes);

48
tests/model/VersionedTest.php
View File

@ -5,8 +5,52 @@ class VersionedTest extends SapphireTest {
protected $extraDataObjects = array( protected $extraDataObjects = array(
'VersionedTest_DataObject', 'VersionedTest_DataObject',
'VersionedTest_Subclass'
); );
protected $requiredExtensions = array(
"VersionedTest_DataObject" => array('Versioned')
);
function testDeletingOrphanedVersions() {
$obj = new VersionedTest_Subclass();
$obj->ExtraField = 'Foo'; // ensure that child version table gets written
$obj->write();
$obj->publish('Stage', 'Live');
$obj->ExtraField = 'Bar'; // ensure that child version table gets written
$obj->write();
$obj->publish('Stage', 'Live');
$versions = DB::query("SELECT COUNT(*) FROM \"VersionedTest_Subclass_versions\" WHERE \"RecordID\" = '$obj->ID'")->value();
$this->assertGreaterThan(0, $versions, 'At least 1 version exists in the history of the page');
// Force orphaning of all versions created earlier, only on parent record.
// The child versiones table should still have the correct relationship
DB::query("DELETE FROM \"VersionedTest_DataObject_versions\" WHERE \"RecordID\" = $obj->ID");
// insert a record with no primary key (ID)
DB::query("INSERT INTO \"VersionedTest_DataObject_versions\" (RecordID) VALUES ($obj->ID)");
// run the script which should clean that up
$obj->augmentDatabase();
$versions = DB::query("SELECT COUNT(*) FROM \"VersionedTest_Subclass_versions\" WHERE \"RecordID\" = '$obj->ID'")->value();
$this->assertEquals(0, $versions, 'Orphaned versions on child tables are removed');
// test that it doesn't delete records that we need
$obj->write();
$obj->publish('Stage', 'Live');
$count = DB::query("SELECT COUNT(*) FROM \"VersionedTest_Subclass_versions\" WHERE \"RecordID\" = '$obj->ID'")->value();
$obj->augmentDatabase();
$count2 = DB::query("SELECT COUNT(*) FROM \"VersionedTest_Subclass_versions\" WHERE \"RecordID\" = '$obj->ID'")->value();
$this->assertEquals($count, $count2);
}
function testForceChangeUpdatesVersion() { function testForceChangeUpdatesVersion() {
$obj = new VersionedTest_DataObject(); $obj = new VersionedTest_DataObject();
$obj->Name = "test"; $obj->Name = "test";
@ -202,6 +246,10 @@ class VersionedTest_Subclass extends VersionedTest_DataObject implements TestOnl
static $db = array( static $db = array(
"ExtraField" => "Varchar", "ExtraField" => "Varchar",
); );
static $extensions = array(
"Versioned('Stage', 'Live')"
);
} }
/** /**