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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/matcher/extensions_callback_real.h"
#include "mongo/db/commands/test_commands_enabled.h"
#include "mongo/db/matcher/expression_expr.h"
#include "mongo/db/matcher/expression_text.h"
#include "mongo/db/matcher/expression_where.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/pipeline/expression_function.h"
#include "mongo/db/query/query_knobs_gen.h"
#include "mongo/db/query/util/make_data_structure.h"
#include "mongo/scripting/engine.h"
namespace mongo {
ExtensionsCallbackReal::ExtensionsCallbackReal(OperationContext* opCtx, const NamespaceString* nss)
: _opCtx(opCtx), _nss(nss) {}
std::unique_ptr<MatchExpression> ExtensionsCallbackReal::createText(
TextMatchExpressionBase::TextParams text) const {
return std::make_unique<TextMatchExpression>(_opCtx, *_nss, std::move(text));
}
std::unique_ptr<MatchExpression> ExtensionsCallbackReal::createWhere(
const boost::intrusive_ptr<ExpressionContext>& expCtx,
WhereMatchExpressionBase::WhereParams where) const {
if (getTestCommandsEnabled() && internalQueryDesugarWhereToFunction.load()) {
uassert(ErrorCodes::BadValue, "ns for $where cannot be empty", expCtx->ns.db().size() != 0);
auto code = where.code;
// Desugar $where to $expr. The $where function is invoked through a $function expression by
// passing the document as $$CURRENT.
auto fnExpression = ExpressionFunction::createForWhere(
expCtx.get(),
ExpressionArray::create(
expCtx.get(),
makeVector<boost::intrusive_ptr<Expression>>(ExpressionFieldPath::parse(
expCtx.get(), "$$CURRENT", expCtx->variablesParseState))),
code,
ExpressionFunction::kJavaScript);
return std::make_unique<ExprMatchExpression>(fnExpression, expCtx);
} else {
expCtx->hasWhereClause = true;
return std::make_unique<WhereMatchExpression>(_opCtx, std::move(where), expCtx->ns.db());
}
}
} // namespace mongo
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