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Refactor / Cleanup Versioned

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This commit is contained in:
Damian Mooyman 2014-08-28 11:29:38 +12:00
parent c140459ac6
commit 35fcb551d9
1 changed files with 79 additions and 56 deletions
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135
model/Versioned.php
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@ -559,26 +559,91 @@ class Versioned extends DataExtension implements TemplateGlobalProvider {
return $results;
}
/**
* Generates a ($table)_version DB manipulation and injects it into the current $manipulation
*
* @param array $manipulation Source manipulation data
* @param string $table Name of table
* @param int $recordID ID of record to version
*/
protected function augmentWriteVersioned(&$manipulation, $table, $recordID) {
$baseDataClass = ClassInfo::baseDataClass($table);
// Set up a new entry in (table)_versions
$newManipulation = array(
"command" => "insert",
"fields" => isset($manipulation[$table]['fields']) ? $manipulation[$table]['fields'] : null
);
// Add any extra, unchanged fields to the version record.
$data = DB::prepared_query("SELECT * FROM \"$table\" WHERE \"ID\" = ?", array($recordID))->record();
if($data) foreach($data as $k => $v) {
if (!isset($newManipulation['fields'][$k])) {
$newManipulation['fields'][$k] = $v;
}
}
// Ensure that the ID is instead written to the RecordID field
$newManipulation['fields']['RecordID'] = $recordID;
unset($newManipulation['fields']['ID']);
// Generate next version ID to use
$nextVersion = 0;
if($recordID) {
$nextVersion = DB::prepared_query("SELECT MAX(\"Version\") + 1
FROM \"{$baseDataClass}_versions\" WHERE \"RecordID\" = ?",
array($recordID)
)->value();
}
$nextVersion = $nextVersion ?: 1;
// Add the version number to this data
$manipulation[$table]['fields']['Version'] = $nextVersion;
$newManipulation['fields']['Version'] = $nextVersion;
// Write AuthorID for baseclass
if($table === $baseDataClass) {
$userID = (Member::currentUser()) ? Member::currentUser()->ID : 0;
$newManipulation['fields']['AuthorID'] = $userID;
}
$manipulation["{$table}_versions"] = $newManipulation;
}
/**
* Rewrite the given manipulation to update the selected (non-default) stage
*
* @param array $manipulation Source manipulation data
* @param string $table Name of table
* @param int $recordID ID of record to version
*/
protected function augmentWriteStaged(&$manipulation, $table, $recordID) {
// If the record has already been inserted in the (table), get rid of it.
if($manipulation[$table]['command'] == 'insert') {
DB::prepared_query(
"DELETE FROM \"{$table}\" WHERE \"ID\" = ?",
array($recordID)
);
}
$newTable = $table . '_' . Versioned::current_stage();
$manipulation[$newTable] = $manipulation[$table];
unset($manipulation[$table]);
}
public function augmentWrite(&$manipulation) {
$tables = array_keys($manipulation);
$version_table = array();
foreach($tables as $table) {
$baseDataClass = ClassInfo::baseDataClass($table);
$isRootClass = ($table == $baseDataClass);
// Make sure that the augmented write is being applied to a table that can be versioned
if( !$this->canBeVersioned($table) ) {
unset($manipulation[$table]);
continue;
}
$rid = $manipulation[$table]['id'] ? $manipulation[$table]['id'] : $manipulation[$table]['fields']['ID'];;
if(!$rid) user_error("Couldn't find ID in " . var_export($manipulation[$table], true), E_USER_ERROR);
$newManipulation = array(
"command" => "insert",
"fields" => isset($manipulation[$table]['fields']) ? $manipulation[$table]['fields'] : null
);
// Get ID field
$id = $manipulation[$table]['id'] ? $manipulation[$table]['id'] : $manipulation[$table]['fields']['ID'];
if(!$id) user_error("Couldn't find ID in " . var_export($manipulation[$table], true), E_USER_ERROR);
if($this->migratingVersion) {
$manipulation[$table]['fields']['Version'] = $this->migratingVersion;
@ -587,40 +652,7 @@ class Versioned extends DataExtension implements TemplateGlobalProvider {
// If we haven't got a version #, then we're creating a new version.
// Otherwise, we're just copying a version to another table
if(empty($manipulation[$table]['fields']['Version'])) {
// Add any extra, unchanged fields to the version record.
$data = DB::prepared_query("SELECT * FROM \"$table\" WHERE \"ID\" = ?", array($rid))->record();
if($data) foreach($data as $k => $v) {
if (!isset($newManipulation['fields'][$k])) {
$newManipulation['fields'][$k] = $v;
}
}
// Set up a new entry in (table)_versions
$newManipulation['fields']['RecordID'] = $rid;
unset($newManipulation['fields']['ID']);
// Create a new version #
$nextVersion = 0;
if($rid) {
$nextVersion = DB::prepared_query("SELECT MAX(\"Version\") + 1
FROM \"{$baseDataClass}_versions\" WHERE \"RecordID\" = ?",
array($rid)
)->value();
}
$nextVersion = $nextVersion ?: 1;
// Add the version number to this data
$newManipulation['fields']['Version'] = $nextVersion;
if($isRootClass) {
$userID = (Member::currentUser()) ? Member::currentUser()->ID : 0;
$newManipulation['fields']['AuthorID'] = $userID;
}
$manipulation["{$table}_versions"] = $newManipulation;
$manipulation[$table]['fields']['Version'] = $nextVersion;
$this->augmentWriteVersioned($manipulation, $table, $id);
}
// Putting a Version of -1 is a signal to leave the version table alone, despite their being no version
@ -628,6 +660,7 @@ class Versioned extends DataExtension implements TemplateGlobalProvider {
unset($manipulation[$table]['fields']['Version']);
}
// For base classes of versioned data objects
if(!$this->hasVersionField($table)) unset($manipulation[$table]['fields']['Version']);
// Grab a version number - it should be the same across all tables.
@ -641,17 +674,7 @@ class Versioned extends DataExtension implements TemplateGlobalProvider {
&& Versioned::current_stage() != $this->defaultStage
&& in_array(Versioned::current_stage(), $this->stages)
) {
// If the record has already been inserted in the (table), get rid of it.
if($manipulation[$table]['command']=='insert') {
DB::prepared_query(
"DELETE FROM \"{$table}\" WHERE \"ID\" = ?",
array($rid)
);
}
$newTable = $table . '_' . Versioned::current_stage();
$manipulation[$newTable] = $manipulation[$table];
unset($manipulation[$table]);
$this->augmentWriteStaged($manipulation, $table, $id);
}
}