You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
226 lines
8.0 KiB
226 lines
8.0 KiB
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
|
|
*
|
|
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
* @author Robin Appelman <robin@icewind.nl>
|
|
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
|
* @author Tobias Kaminsky <tobias@kaminsky.me>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
namespace OC\Files\Cache;
|
|
|
|
use OCP\DB\QueryBuilder\IQueryBuilder;
|
|
use OCP\Files\IMimeTypeLoader;
|
|
use OCP\Files\Search\ISearchBinaryOperator;
|
|
use OCP\Files\Search\ISearchComparison;
|
|
use OCP\Files\Search\ISearchOperator;
|
|
use OCP\Files\Search\ISearchOrder;
|
|
|
|
/**
|
|
* Tools for transforming search queries into database queries
|
|
*/
|
|
class QuerySearchHelper {
|
|
protected static $searchOperatorMap = [
|
|
ISearchComparison::COMPARE_LIKE => 'iLike',
|
|
ISearchComparison::COMPARE_EQUAL => 'eq',
|
|
ISearchComparison::COMPARE_GREATER_THAN => 'gt',
|
|
ISearchComparison::COMPARE_GREATER_THAN_EQUAL => 'gte',
|
|
ISearchComparison::COMPARE_LESS_THAN => 'lt',
|
|
ISearchComparison::COMPARE_LESS_THAN_EQUAL => 'lte'
|
|
];
|
|
|
|
protected static $searchOperatorNegativeMap = [
|
|
ISearchComparison::COMPARE_LIKE => 'notLike',
|
|
ISearchComparison::COMPARE_EQUAL => 'neq',
|
|
ISearchComparison::COMPARE_GREATER_THAN => 'lte',
|
|
ISearchComparison::COMPARE_GREATER_THAN_EQUAL => 'lt',
|
|
ISearchComparison::COMPARE_LESS_THAN => 'gte',
|
|
ISearchComparison::COMPARE_LESS_THAN_EQUAL => 'lt'
|
|
];
|
|
|
|
public const TAG_FAVORITE = '_$!<Favorite>!$_';
|
|
|
|
/** @var IMimeTypeLoader */
|
|
private $mimetypeLoader;
|
|
|
|
/**
|
|
* QuerySearchUtil constructor.
|
|
*
|
|
* @param IMimeTypeLoader $mimetypeLoader
|
|
*/
|
|
public function __construct(IMimeTypeLoader $mimetypeLoader) {
|
|
$this->mimetypeLoader = $mimetypeLoader;
|
|
}
|
|
|
|
/**
|
|
* Whether or not the tag tables should be joined to complete the search
|
|
*
|
|
* @param ISearchOperator $operator
|
|
* @return boolean
|
|
*/
|
|
public function shouldJoinTags(ISearchOperator $operator) {
|
|
if ($operator instanceof ISearchBinaryOperator) {
|
|
return array_reduce($operator->getArguments(), function ($shouldJoin, ISearchOperator $operator) {
|
|
return $shouldJoin || $this->shouldJoinTags($operator);
|
|
}, false);
|
|
} elseif ($operator instanceof ISearchComparison) {
|
|
return $operator->getField() === 'tagname' || $operator->getField() === 'favorite';
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param IQueryBuilder $builder
|
|
* @param ISearchOperator $operator
|
|
*/
|
|
public function searchOperatorArrayToDBExprArray(IQueryBuilder $builder, array $operators) {
|
|
return array_filter(array_map(function ($operator) use ($builder) {
|
|
return $this->searchOperatorToDBExpr($builder, $operator);
|
|
}, $operators));
|
|
}
|
|
|
|
public function searchOperatorToDBExpr(IQueryBuilder $builder, ISearchOperator $operator) {
|
|
$expr = $builder->expr();
|
|
if ($operator instanceof ISearchBinaryOperator) {
|
|
if (count($operator->getArguments()) === 0) {
|
|
return null;
|
|
}
|
|
|
|
switch ($operator->getType()) {
|
|
case ISearchBinaryOperator::OPERATOR_NOT:
|
|
$negativeOperator = $operator->getArguments()[0];
|
|
if ($negativeOperator instanceof ISearchComparison) {
|
|
return $this->searchComparisonToDBExpr($builder, $negativeOperator, self::$searchOperatorNegativeMap);
|
|
} else {
|
|
throw new \InvalidArgumentException('Binary operators inside "not" is not supported');
|
|
}
|
|
// no break
|
|
case ISearchBinaryOperator::OPERATOR_AND:
|
|
return call_user_func_array([$expr, 'andX'], $this->searchOperatorArrayToDBExprArray($builder, $operator->getArguments()));
|
|
case ISearchBinaryOperator::OPERATOR_OR:
|
|
return call_user_func_array([$expr, 'orX'], $this->searchOperatorArrayToDBExprArray($builder, $operator->getArguments()));
|
|
default:
|
|
throw new \InvalidArgumentException('Invalid operator type: ' . $operator->getType());
|
|
}
|
|
} elseif ($operator instanceof ISearchComparison) {
|
|
return $this->searchComparisonToDBExpr($builder, $operator, self::$searchOperatorMap);
|
|
} else {
|
|
throw new \InvalidArgumentException('Invalid operator type: ' . get_class($operator));
|
|
}
|
|
}
|
|
|
|
private function searchComparisonToDBExpr(IQueryBuilder $builder, ISearchComparison $comparison, array $operatorMap) {
|
|
$this->validateComparison($comparison);
|
|
|
|
list($field, $value, $type) = $this->getOperatorFieldAndValue($comparison);
|
|
if (isset($operatorMap[$type])) {
|
|
$queryOperator = $operatorMap[$type];
|
|
return $builder->expr()->$queryOperator($field, $this->getParameterForValue($builder, $value));
|
|
} else {
|
|
throw new \InvalidArgumentException('Invalid operator type: ' . $comparison->getType());
|
|
}
|
|
}
|
|
|
|
private function getOperatorFieldAndValue(ISearchComparison $operator) {
|
|
$field = $operator->getField();
|
|
$value = $operator->getValue();
|
|
$type = $operator->getType();
|
|
if ($field === 'mimetype') {
|
|
if ($operator->getType() === ISearchComparison::COMPARE_EQUAL) {
|
|
$value = (int)$this->mimetypeLoader->getId($value);
|
|
} elseif ($operator->getType() === ISearchComparison::COMPARE_LIKE) {
|
|
// transform "mimetype='foo/%'" to "mimepart='foo'"
|
|
if (preg_match('|(.+)/%|', $value, $matches)) {
|
|
$field = 'mimepart';
|
|
$value = (int)$this->mimetypeLoader->getId($matches[1]);
|
|
$type = ISearchComparison::COMPARE_EQUAL;
|
|
} elseif (strpos($value, '%') !== false) {
|
|
throw new \InvalidArgumentException('Unsupported query value for mimetype: ' . $value . ', only values in the format "mime/type" or "mime/%" are supported');
|
|
} else {
|
|
$field = 'mimetype';
|
|
$value = (int)$this->mimetypeLoader->getId($value);
|
|
$type = ISearchComparison::COMPARE_EQUAL;
|
|
}
|
|
}
|
|
} elseif ($field === 'favorite') {
|
|
$field = 'tag.category';
|
|
$value = self::TAG_FAVORITE;
|
|
} elseif ($field === 'tagname') {
|
|
$field = 'tag.category';
|
|
} elseif ($field === 'fileid') {
|
|
$field = 'file.fileid';
|
|
}
|
|
return [$field, $value, $type];
|
|
}
|
|
|
|
private function validateComparison(ISearchComparison $operator) {
|
|
$types = [
|
|
'mimetype' => 'string',
|
|
'mtime' => 'integer',
|
|
'name' => 'string',
|
|
'size' => 'integer',
|
|
'tagname' => 'string',
|
|
'favorite' => 'boolean',
|
|
'fileid' => 'integer'
|
|
];
|
|
$comparisons = [
|
|
'mimetype' => ['eq', 'like'],
|
|
'mtime' => ['eq', 'gt', 'lt', 'gte', 'lte'],
|
|
'name' => ['eq', 'like'],
|
|
'size' => ['eq', 'gt', 'lt', 'gte', 'lte'],
|
|
'tagname' => ['eq', 'like'],
|
|
'favorite' => ['eq'],
|
|
'fileid' => ['eq']
|
|
];
|
|
|
|
if (!isset($types[$operator->getField()])) {
|
|
throw new \InvalidArgumentException('Unsupported comparison field ' . $operator->getField());
|
|
}
|
|
$type = $types[$operator->getField()];
|
|
if (gettype($operator->getValue()) !== $type) {
|
|
throw new \InvalidArgumentException('Invalid type for field ' . $operator->getField());
|
|
}
|
|
if (!in_array($operator->getType(), $comparisons[$operator->getField()])) {
|
|
throw new \InvalidArgumentException('Unsupported comparison for field ' . $operator->getField() . ': ' . $operator->getType());
|
|
}
|
|
}
|
|
|
|
private function getParameterForValue(IQueryBuilder $builder, $value) {
|
|
if ($value instanceof \DateTime) {
|
|
$value = $value->getTimestamp();
|
|
}
|
|
if (is_numeric($value)) {
|
|
$type = IQueryBuilder::PARAM_INT;
|
|
} else {
|
|
$type = IQueryBuilder::PARAM_STR;
|
|
}
|
|
return $builder->createNamedParameter($value, $type);
|
|
}
|
|
|
|
/**
|
|
* @param IQueryBuilder $query
|
|
* @param ISearchOrder[] $orders
|
|
*/
|
|
public function addSearchOrdersToQuery(IQueryBuilder $query, array $orders) {
|
|
foreach ($orders as $order) {
|
|
$query->addOrderBy($order->getField(), $order->getDirection());
|
|
}
|
|
}
|
|
}
|