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PhabricatorApplicationSearchEngine.php
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Mon, Oct 7, 21:26

PhabricatorApplicationSearchEngine.php
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<?php
/**
* Represents an abstract search engine for an application. It supports
* creating and storing saved queries.
*
* @task builtin Builtin Queries
* @task uri Query URIs
* @task dates Date Filters
* @task read Reading Utilities
*
* @group search
*/
abstract class PhabricatorApplicationSearchEngine {
private $viewer;
private $errors = array();
private $customFields = false;
public function setViewer(PhabricatorUser $viewer) {
$this->viewer = $viewer;
return $this;
}
protected function requireViewer() {
if (!$this->viewer) {
throw new Exception("Call setViewer() before using an engine!");
}
return $this->viewer;
}
/**
* Create a saved query object from the request.
*
* @param AphrontRequest The search request.
* @return PhabricatorSavedQuery
*/
abstract public function buildSavedQueryFromRequest(
AphrontRequest $request);
/**
* Executes the saved query.
*
* @param PhabricatorSavedQuery The saved query to operate on.
* @return The result of the query.
*/
abstract public function buildQueryFromSavedQuery(
PhabricatorSavedQuery $saved);
/**
* Builds the search form using the request.
*
* @param AphrontFormView Form to populate.
* @param PhabricatorSavedQuery The query from which to build the form.
* @return void
*/
abstract public function buildSearchForm(
AphrontFormView $form,
PhabricatorSavedQuery $query);
public function getErrors() {
return $this->errors;
}
public function addError($error) {
$this->errors[] = $error;
return $this;
}
/**
* Return an application URI corresponding to the results page of a query.
* Normally, this is something like `/application/query/QUERYKEY/`.
*
* @param string The query key to build a URI for.
* @return string URI where the query can be executed.
* @task uri
*/
public function getQueryResultsPageURI($query_key) {
return $this->getURI('query/'.$query_key.'/');
}
/**
* Return an application URI for query management. This is used when, e.g.,
* a query deletion operation is cancelled.
*
* @return string URI where queries can be managed.
* @task uri
*/
public function getQueryManagementURI() {
return $this->getURI('query/edit/');
}
/**
* Return the URI to a path within the application. Used to construct default
* URIs for management and results.
*
* @return string URI to path.
* @task uri
*/
abstract protected function getURI($path);
public function newSavedQuery() {
return id(new PhabricatorSavedQuery())
->setEngineClassName(get_class($this));
}
public function addNavigationItems(PHUIListView $menu) {
$viewer = $this->requireViewer();
$menu->newLabel(pht('Queries'));
$named_queries = $this->loadEnabledNamedQueries();
foreach ($named_queries as $query) {
$key = $query->getQueryKey();
$uri = $this->getQueryResultsPageURI($key);
$menu->newLink($query->getQueryName(), $uri, 'query/'.$key);
}
if ($viewer->isLoggedIn()) {
$manage_uri = $this->getQueryManagementURI();
$menu->newLink(pht('Edit Queries...'), $manage_uri, 'query/edit');
}
$menu->newLabel(pht('Search'));
$advanced_uri = $this->getQueryResultsPageURI('advanced');
$menu->newLink(pht('Advanced Search'), $advanced_uri, 'query/advanced');
return $this;
}
public function loadAllNamedQueries() {
$viewer = $this->requireViewer();
$named_queries = id(new PhabricatorNamedQueryQuery())
->setViewer($viewer)
->withUserPHIDs(array($viewer->getPHID()))
->withEngineClassNames(array(get_class($this)))
->execute();
$named_queries = mpull($named_queries, null, 'getQueryKey');
$builtin = $this->getBuiltinQueries($viewer);
$builtin = mpull($builtin, null, 'getQueryKey');
foreach ($named_queries as $key => $named_query) {
if ($named_query->getIsBuiltin()) {
if (isset($builtin[$key])) {
$named_queries[$key]->setQueryName($builtin[$key]->getQueryName());
unset($builtin[$key]);
} else {
unset($named_queries[$key]);
}
}
unset($builtin[$key]);
}
$named_queries = msort($named_queries, 'getSortKey');
return $named_queries + $builtin;
}
public function loadEnabledNamedQueries() {
$named_queries = $this->loadAllNamedQueries();
foreach ($named_queries as $key => $named_query) {
if ($named_query->getIsBuiltin() && $named_query->getIsDisabled()) {
unset($named_queries[$key]);
}
}
return $named_queries;
}
/* -( Builtin Queries )---------------------------------------------------- */
/**
* @task builtin
*/
public function getBuiltinQueries() {
$names = $this->getBuiltinQueryNames();
$queries = array();
$sequence = 0;
foreach ($names as $key => $name) {
$queries[$key] = id(new PhabricatorNamedQuery())
->setUserPHID($this->requireViewer()->getPHID())
->setEngineClassName(get_class($this))
->setQueryName($name)
->setQueryKey($key)
->setSequence((1 << 24) + $sequence++)
->setIsBuiltin(true);
}
return $queries;
}
/**
* @task builtin
*/
public function getBuiltinQuery($query_key) {
if (!$this->isBuiltinQuery($query_key)) {
throw new Exception("'{$query_key}' is not a builtin!");
}
return idx($this->getBuiltinQueries(), $query_key);
}
/**
* @task builtin
*/
protected function getBuiltinQueryNames() {
return array();
}
/**
* @task builtin
*/
public function isBuiltinQuery($query_key) {
$builtins = $this->getBuiltinQueries();
return isset($builtins[$query_key]);
}
/**
* @task builtin
*/
public function buildSavedQueryFromBuiltin($query_key) {
throw new Exception("Builtin '{$query_key}' is not supported!");
}
/* -( Reading Utilities )--------------------------------------------------- */
/**
* Read a list of user PHIDs from a request in a flexible way. This method
* supports either of these forms:
*
* users[]=alincoln&users[]=htaft
* users=alincoln,htaft
*
* Additionally, users can be specified either by PHID or by name.
*
* The main goal of this flexibility is to allow external programs to generate
* links to pages (like "alincoln's open revisions") without needing to make
* API calls.
*
* @param AphrontRequest Request to read user PHIDs from.
* @param string Key to read in the request.
* @param list<const> Other permitted PHID types.
* @return list<phid> List of user PHIDs.
*
* @task read
*/
protected function readUsersFromRequest(
AphrontRequest $request,
$key,
array $allow_types = array()) {
$list = $request->getArr($key, null);
if ($list === null) {
$list = $request->getStrList($key);
}
$phids = array();
$names = array();
$allow_types = array_fuse($allow_types);
$user_type = PhabricatorPHIDConstants::PHID_TYPE_USER;
foreach ($list as $item) {
$type = phid_get_type($item);
phlog($type);
if ($type == $user_type) {
$phids[] = $item;
} else if (isset($allow_types[$type])) {
$phids[] = $item;
} else {
$names[] = $item;
}
}
if ($names) {
$users = id(new PhabricatorPeopleQuery())
->setViewer($this->requireViewer())
->withUsernames($names)
->execute();
foreach ($users as $user) {
$phids[] = $user->getPHID();
}
$phids = array_unique($phids);
}
return $phids;
}
/**
* Read a list of generic PHIDs from a request in a flexible way. Like
* @{method:readUsersFromRequest}, this method supports either array or
* comma-delimited forms. Objects can be specified either by PHID or by
* object name.
*
* @param AphrontRequest Request to read PHIDs from.
* @param string Key to read in the request.
* @param list<const> Optional, list of permitted PHID types.
* @return list<phid> List of object PHIDs.
*
* @task read
*/
protected function readPHIDsFromRequest(
AphrontRequest $request,
$key,
array $allow_types = array()) {
$list = $request->getArr($key, null);
if ($list === null) {
$list = $request->getStrList($key);
}
if (!$list) {
return array();
}
$objects = id(new PhabricatorObjectQuery())
->setViewer($this->requireViewer())
->withNames($list)
->execute();
$list = mpull($objects, 'getPHID');
if (!$list) {
return array();
}
// If only certain PHID types are allowed, filter out all the others.
if ($allow_types) {
$allow_types = array_fuse($allow_types);
foreach ($list as $key => $phid) {
if (empty($allow_types[phid_get_type($phid)])) {
unset($list[$key]);
}
}
}
return $list;
}
protected function readBoolFromRequest(
AphrontRequest $request,
$key) {
if (!strlen($request->getStr($key))) {
return null;
}
return $request->getBool($key);
}
protected function getBoolFromQuery(PhabricatorSavedQuery $query, $key) {
$value = $query->getParameter($key);
if ($value === null) {
return $value;
}
return $value ? 'true' : 'false';
}
/* -( Dates )-------------------------------------------------------------- */
/**
* @task dates
*/
protected function parseDateTime($date_time) {
if (!strlen($date_time)) {
return null;
}
return PhabricatorTime::parseLocalTime($date_time, $this->requireViewer());
}
/**
* @task dates
*/
protected function buildDateRange(
AphrontFormView $form,
PhabricatorSavedQuery $saved_query,
$start_key,
$start_name,
$end_key,
$end_name) {
$start_str = $saved_query->getParameter($start_key);
$start = null;
if (strlen($start_str)) {
$start = $this->parseDateTime($start_str);
if (!$start) {
$this->addError(
pht(
'"%s" date can not be parsed.',
$start_name));
}
}
$end_str = $saved_query->getParameter($end_key);
$end = null;
if (strlen($end_str)) {
$end = $this->parseDateTime($end_str);
if (!$end) {
$this->addError(
pht(
'"%s" date can not be parsed.',
$end_name));
}
}
if ($start && $end && ($start >= $end)) {
$this->addError(
pht(
'"%s" must be a date before "%s".',
$start_name,
$end_name));
}
$form
->appendChild(
id(new PHUIFormFreeformDateControl())
->setName($start_key)
->setLabel($start_name)
->setValue($start_str))
->appendChild(
id(new AphrontFormTextControl())
->setName($end_key)
->setLabel($end_name)
->setValue($end_str));
}
/* -( Pagination )--------------------------------------------------------- */
public function getPageSize(PhabricatorSavedQuery $saved) {
return $saved->getParameter('limit', 100);
}
/* -( Application Search )------------------------------------------------- */
/**
* Retrieve an object to use to define custom fields for this search.
*
* To integrate with custom fields, subclasses should override this method
* and return an instance of the application object which implements
* @{interface:PhabricatorCustomFieldInterface}.
*
* @return PhabricatorCustomFieldInterface|null Object with custom fields.
* @task appsearch
*/
public function getCustomFieldObject() {
return null;
}
/**
* Get the custom fields for this search.
*
* @return PhabricatorCustomFieldList|null Custom fields, if this search
* supports custom fields.
* @task appsearch
*/
public function getCustomFieldList() {
if ($this->customFields === false) {
$object = $this->getCustomFieldObject();
if ($object) {
$fields = PhabricatorCustomField::getObjectFields(
$object,
PhabricatorCustomField::ROLE_APPLICATIONSEARCH);
} else {
$fields = null;
}
$this->customFields = $fields;
}
return $this->customFields;
}
/**
* Moves data from the request into a saved query.
*
* @param AphrontRequest Request to read.
* @param PhabricatorSavedQuery Query to write to.
* @return void
* @task appsearch
*/
protected function readCustomFieldsFromRequest(
AphrontRequest $request,
PhabricatorSavedQuery $saved) {
$list = $this->getCustomFieldList();
if (!$list) {
return;
}
foreach ($list->getFields() as $field) {
$key = $this->getKeyForCustomField($field);
$value = $field->readApplicationSearchValueFromRequest(
$this,
$request);
$saved->setParameter($key, $value);
}
}
/**
* Applies data from a saved query to an executable query.
*
* @param PhabricatorCursorPagedPolicyAwareQuery Query to constrain.
* @param PhabricatorSavedQuery Saved query to read.
* @return void
*/
protected function applyCustomFieldsToQuery(
PhabricatorCursorPagedPolicyAwareQuery $query,
PhabricatorSavedQuery $saved) {
$list = $this->getCustomFieldList();
if (!$list) {
return;
}
foreach ($list->getFields() as $field) {
$key = $this->getKeyForCustomField($field);
$value = $field->applyApplicationSearchConstraintToQuery(
$this,
$query,
$saved->getParameter($key));
}
}
/**
* Get a unique key identifying a field.
*
* @param PhabricatorCustomField Field to identify.
* @return string Unique identifier, suitable for use as an input name.
*/
public function getKeyForCustomField(PhabricatorCustomField $field) {
return 'custom:'.$field->getFieldIndex();
}
/**
* Add inputs to an application search form so the user can query on custom
* fields.
*
* @param AphrontFormView Form to update.
* @param PhabricatorSavedQuery Values to prefill.
* @return void
*/
protected function appendCustomFieldsToForm(
AphrontFormView $form,
PhabricatorSavedQuery $saved) {
$list = $this->getCustomFieldList();
if (!$list) {
return;
}
$phids = array();
foreach ($list->getFields() as $field) {
$key = $this->getKeyForCustomField($field);
$value = $saved->getParameter($key);
$phids[$key] = $field->getRequiredHandlePHIDsForApplicationSearch($value);
}
$all_phids = array_mergev($phids);
$handles = array();
if ($all_phids) {
$handles = id(new PhabricatorHandleQuery())
->setViewer($this->requireViewer())
->withPHIDs($all_phids)
->execute();
}
foreach ($list->getFields() as $field) {
$key = $this->getKeyForCustomField($field);
$value = $saved->getParameter($key);
$field->appendToApplicationSearchForm(
$this,
$form,
$value,
array_select_keys($handles, $phids[$key]));
}
}
}

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