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PhabricatorIndexEngine.php
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Created
Sat, Apr 26, 02:17

PhabricatorIndexEngine.php
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<?php
final class PhabricatorIndexEngine extends Phobject {
private $object;
private $extensions;
private $versions;
private $parameters;
public function setParameters(array $parameters) {
$this->parameters = $parameters;
return $this;
}
public function getParameters() {
return $this->parameters;
}
public function setObject($object) {
$this->object = $object;
return $this;
}
public function getObject() {
return $this->object;
}
public function shouldIndexObject() {
$extensions = $this->newExtensions();
$parameters = $this->getParameters();
foreach ($extensions as $extension) {
$extension->setParameters($parameters);
}
$object = $this->getObject();
$versions = array();
foreach ($extensions as $key => $extension) {
$version = $extension->getIndexVersion($object);
if ($version !== null) {
$versions[$key] = (string)$version;
}
}
if (idx($parameters, 'force')) {
$current_versions = array();
} else {
// TODO: Load current indexed versions.
$current_versions = array();
}
foreach ($versions as $key => $version) {
$current_version = idx($current_versions, $key);
if ($current_version === null) {
continue;
}
// If nothing has changed since we built the current index, we do not
// need to rebuild the index.
if ($current_version === $version) {
unset($extensions[$key]);
}
}
$this->extensions = $extensions;
$this->versions = $versions;
// We should index the object only if there is any work to be done.
return (bool)$this->extensions;
}
public function indexObject() {
$extensions = $this->extensions;
$object = $this->getObject();
foreach ($extensions as $key => $extension) {
$extension->indexObject($this, $object);
}
// TODO: Save new index versions.
return $this;
}
private function newExtensions() {
$object = $this->getObject();
$extensions = PhabricatorIndexEngineExtension::getAllExtensions();
foreach ($extensions as $key => $extension) {
if (!$extension->shouldIndexObject($object)) {
unset($extensions[$key]);
}
}
return $extensions;
}
}

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