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DivinerAtomQuery.php
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Thu, Apr 24, 17:11

DivinerAtomQuery.php
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<?php
final class DivinerAtomQuery extends PhabricatorCursorPagedPolicyAwareQuery {
private $ids;
private $phids;
private $bookPHIDs;
private $names;
private $types;
private $contexts;
private $indexes;
private $isDocumentable;
private $isGhost;
private $nodeHashes;
private $titles;
private $nameContains;
private $needAtoms;
private $needExtends;
private $needChildren;
public function withIDs(array $ids) {
$this->ids = $ids;
return $this;
}
public function withPHIDs(array $phids) {
$this->phids = $phids;
return $this;
}
public function withBookPHIDs(array $phids) {
$this->bookPHIDs = $phids;
return $this;
}
public function withTypes(array $types) {
$this->types = $types;
return $this;
}
public function withNames(array $names) {
$this->names = $names;
return $this;
}
public function withContexts(array $contexts) {
$this->contexts = $contexts;
return $this;
}
public function withIndexes(array $indexes) {
$this->indexes = $indexes;
return $this;
}
public function withNodeHashes(array $hashes) {
$this->nodeHashes = $hashes;
return $this;
}
public function withTitles($titles) {
$this->titles = $titles;
return $this;
}
public function withNameContains($text) {
$this->nameContains = $text;
return $this;
}
public function needAtoms($need) {
$this->needAtoms = $need;
return $this;
}
public function needChildren($need) {
$this->needChildren = $need;
return $this;
}
/**
* Include or exclude "ghosts", which are symbols which used to exist but do
* not exist currently (for example, a function which existed in an older
* version of the codebase but was deleted).
*
* These symbols had PHIDs assigned to them, and may have other sorts of
* metadata that we don't want to lose (like comments or flags), so we don't
* delete them outright. They might also come back in the future: the change
* which deleted the symbol might be reverted, or the documentation might
* have been generated incorrectly by accident. In these cases, we can
* restore the original data.
*
* @param bool
* @return this
*/
public function withGhosts($ghosts) {
$this->isGhost = $ghosts;
return $this;
}
public function needExtends($need) {
$this->needExtends = $need;
return $this;
}
public function withIsDocumentable($documentable) {
$this->isDocumentable = $documentable;
return $this;
}
protected function loadPage() {
$table = new DivinerLiveSymbol();
$conn_r = $table->establishConnection('r');
$data = queryfx_all(
$conn_r,
'SELECT * FROM %T %Q %Q %Q',
$table->getTableName(),
$this->buildWhereClause($conn_r),
$this->buildOrderClause($conn_r),
$this->buildLimitClause($conn_r));
return $table->loadAllFromArray($data);
}
protected function willFilterPage(array $atoms) {
$books = array_unique(mpull($atoms, 'getBookPHID'));
$books = id(new DivinerBookQuery())
->setViewer($this->getViewer())
->withPHIDs($books)
->execute();
$books = mpull($books, null, 'getPHID');
foreach ($atoms as $key => $atom) {
$book = idx($books, $atom->getBookPHID());
if (!$book) {
$this->didRejectResult($atom);
unset($atoms[$key]);
continue;
}
$atom->attachBook($book);
}
if ($this->needAtoms) {
$atom_data = id(new DivinerLiveAtom())->loadAllWhere(
'symbolPHID IN (%Ls)',
mpull($atoms, 'getPHID'));
$atom_data = mpull($atom_data, null, 'getSymbolPHID');
foreach ($atoms as $key => $atom) {
$data = idx($atom_data, $atom->getPHID());
$atom->attachAtom($data);
}
}
// Load all of the symbols this symbol extends, recursively. Commonly,
// this means all the ancestor classes and interfaces it extends and
// implements.
if ($this->needExtends) {
// First, load all the matching symbols by name. This does 99% of the
// work in most cases, assuming things are named at all reasonably.
$names = array();
foreach ($atoms as $atom) {
if (!$atom->getAtom()) {
continue;
}
foreach ($atom->getAtom()->getExtends() as $xref) {
$names[] = $xref->getName();
}
}
if ($names) {
$xatoms = id(new DivinerAtomQuery())
->setViewer($this->getViewer())
->withNames($names)
->withGhosts(false)
->needExtends(true)
->needAtoms(true)
->needChildren($this->needChildren)
->execute();
$xatoms = mgroup($xatoms, 'getName', 'getType', 'getBookPHID');
} else {
$xatoms = array();
}
foreach ($atoms as $atom) {
$atom_lang = null;
$atom_extends = array();
if ($atom->getAtom()) {
$atom_lang = $atom->getAtom()->getLanguage();
$atom_extends = $atom->getAtom()->getExtends();
}
$extends = array();
foreach ($atom_extends as $xref) {
// If there are no symbols of the matching name and type, we can't
// resolve this.
if (empty($xatoms[$xref->getName()][$xref->getType()])) {
continue;
}
// If we found matches in the same documentation book, prefer them
// over other matches. Otherwise, look at all the the matches.
$matches = $xatoms[$xref->getName()][$xref->getType()];
if (isset($matches[$atom->getBookPHID()])) {
$maybe = $matches[$atom->getBookPHID()];
} else {
$maybe = array_mergev($matches);
}
if (!$maybe) {
continue;
}
// Filter out matches in a different language, since, e.g., PHP
// classes can not implement JS classes.
$same_lang = array();
foreach ($maybe as $xatom) {
if ($xatom->getAtom()->getLanguage() == $atom_lang) {
$same_lang[] = $xatom;
}
}
if (!$same_lang) {
continue;
}
// If we have duplicates remaining, just pick the first one. There's
// nothing more we can do to figure out which is the real one.
$extends[] = head($same_lang);
}
$atom->attachExtends($extends);
}
}
if ($this->needChildren) {
$child_hashes = $this->getAllChildHashes($atoms, $this->needExtends);
if ($child_hashes) {
$children = id(new DivinerAtomQuery())
->setViewer($this->getViewer())
->withNodeHashes($child_hashes)
->needAtoms($this->needAtoms)
->execute();
$children = mpull($children, null, 'getNodeHash');
} else {
$children = array();
}
$this->attachAllChildren($atoms, $children, $this->needExtends);
}
return $atoms;
}
protected function buildWhereClause(AphrontDatabaseConnection $conn_r) {
$where = array();
if ($this->ids) {
$where[] = qsprintf(
$conn_r,
'id IN (%Ld)',
$this->ids);
}
if ($this->phids) {
$where[] = qsprintf(
$conn_r,
'phid IN (%Ls)',
$this->phids);
}
if ($this->bookPHIDs) {
$where[] = qsprintf(
$conn_r,
'bookPHID IN (%Ls)',
$this->bookPHIDs);
}
if ($this->types) {
$where[] = qsprintf(
$conn_r,
'type IN (%Ls)',
$this->types);
}
if ($this->names) {
$where[] = qsprintf(
$conn_r,
'name IN (%Ls)',
$this->names);
}
if ($this->titles) {
$hashes = array();
foreach ($this->titles as $title) {
$slug = DivinerAtomRef::normalizeTitleString($title);
$hash = PhabricatorHash::digestForIndex($slug);
$hashes[] = $hash;
}
$where[] = qsprintf(
$conn_r,
'titleSlugHash in (%Ls)',
$hashes);
}
if ($this->contexts) {
$with_null = false;
$contexts = $this->contexts;
foreach ($contexts as $key => $value) {
if ($value === null) {
unset($contexts[$key]);
$with_null = true;
continue;
}
}
if ($contexts && $with_null) {
$where[] = qsprintf(
$conn_r,
'context IN (%Ls) OR context IS NULL',
$contexts);
} else if ($contexts) {
$where[] = qsprintf(
$conn_r,
'context IN (%Ls)',
$contexts);
} else if ($with_null) {
$where[] = qsprintf(
$conn_r,
'context IS NULL');
}
}
if ($this->indexes) {
$where[] = qsprintf(
$conn_r,
'atomIndex IN (%Ld)',
$this->indexes);
}
if ($this->isDocumentable !== null) {
$where[] = qsprintf(
$conn_r,
'isDocumentable = %d',
(int)$this->isDocumentable);
}
if ($this->isGhost !== null) {
if ($this->isGhost) {
$where[] = qsprintf($conn_r, 'graphHash IS NULL');
} else {
$where[] = qsprintf($conn_r, 'graphHash IS NOT NULL');
}
}
if ($this->nodeHashes) {
$where[] = qsprintf(
$conn_r,
'nodeHash IN (%Ls)',
$this->nodeHashes);
}
if ($this->nameContains) {
// NOTE: This `CONVERT()` call makes queries case-insensitive, since
// the column has binary collation. Eventually, this should move into
// fulltext.
$where[] = qsprintf(
$conn_r,
'CONVERT(name USING utf8) LIKE %~',
$this->nameContains);
}
$where[] = $this->buildPagingClause($conn_r);
return $this->formatWhereClause($where);
}
/**
* Walk a list of atoms and collect all the node hashes of the atoms'
* children. When recursing, also walk up the tree and collect children of
* atoms they extend.
*
* @param list<DivinerLiveSymbol> List of symbols to collect child hashes of.
* @param bool True to collect children of extended atoms,
* as well.
* @return map<string, string> Hashes of atoms' children.
*/
private function getAllChildHashes(array $symbols, $recurse_up) {
assert_instances_of($symbols, 'DivinerLiveSymbol');
$hashes = array();
foreach ($symbols as $symbol) {
$child_hashes = array();
if ($symbol->getAtom()) {
$child_hashes = $symbol->getAtom()->getChildHashes();
}
foreach ($child_hashes as $hash) {
$hashes[$hash] = $hash;
}
if ($recurse_up) {
$hashes += $this->getAllChildHashes($symbol->getExtends(), true);
}
}
return $hashes;
}
/**
* Attach child atoms to existing atoms. In recursive mode, also attach child
* atoms to atoms that these atoms extend.
*
* @param list<DivinerLiveSymbol> List of symbols to attach children to.
* @param map<string, DivinerLiveSymbol> Map of symbols, keyed by node hash.
* @param bool True to attach children to extended atoms, as well.
* @return void
*/
private function attachAllChildren(
array $symbols,
array $children,
$recurse_up) {
assert_instances_of($symbols, 'DivinerLiveSymbol');
assert_instances_of($children, 'DivinerLiveSymbol');
foreach ($symbols as $symbol) {
$child_hashes = array();
$symbol_children = array();
if ($symbol->getAtom()) {
$child_hashes = $symbol->getAtom()->getChildHashes();
}
foreach ($child_hashes as $hash) {
if (isset($children[$hash])) {
$symbol_children[] = $children[$hash];
}
}
$symbol->attachChildren($symbol_children);
if ($recurse_up) {
$this->attachAllChildren($symbol->getExtends(), $children, true);
}
}
}
public function getQueryApplicationClass() {
return 'PhabricatorDivinerApplication';
}
}

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