/usr/include/mongo/db/jsobjmanipulator.h is in mongodb-dev 1:2.4.9-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | /** jsobjManipulator.h */
/**
* Copyright (C) 2009 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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/>.
*/
#pragma once
#include "jsobj.h"
//#include "dur.h"
namespace mongo {
/** Manipulate the binary representation of a BSONElement in-place.
Careful, this casts away const.
*/
class BSONElementManipulator {
public:
BSONElementManipulator( const BSONElement &element ) :
_element( element ) {
verify( !_element.eoo() );
}
/** Replace a Timestamp type with a Date type initialized to
OpTime::now().asDate()
*/
void initTimestamp();
// Note the ones with a capital letter call getDur().writing and journal
/** Change the value, in place, of the number. */
void setNumber(double d) {
if ( _element.type() == NumberDouble ) *reinterpret_cast< double * >( value() ) = d;
else if ( _element.type() == NumberInt ) *reinterpret_cast< int * >( value() ) = (int) d;
else verify(0);
}
void SetNumber(double d);
void setLong(long long n) {
verify( _element.type() == NumberLong );
*reinterpret_cast< long long * >( value() ) = n;
}
void SetLong(long long n);
void setInt(int n) {
verify( _element.type() == NumberInt );
*reinterpret_cast< int * >( value() ) = n;
}
void SetInt(int n);
/** Replace the type and value of the element with the type and value of e,
preserving the original fieldName */
void replaceTypeAndValue( const BSONElement &e ) {
*data() = e.type();
memcpy( value(), e.value(), e.valuesize() );
}
/* dur:: version */
void ReplaceTypeAndValue( const BSONElement &e );
static void lookForTimestamps( const BSONObj& obj ) {
// If have a Timestamp field as the first or second element,
// update it to a Date field set to OpTime::now().asDate(). The
// replacement policy is a work in progress.
BSONObjIterator i( obj );
for( int j = 0; i.moreWithEOO() && j < 2; ++j ) {
BSONElement e = i.next();
if ( e.eoo() )
break;
if ( e.type() == Timestamp ) {
// performance note, this locks a mutex:
BSONElementManipulator( e ).initTimestamp();
break;
}
}
}
private:
char *data() { return nonConst( _element.rawdata() ); }
char *value() { return nonConst( _element.value() ); }
static char *nonConst( const char *s ) { return const_cast< char * >( s ); }
const BSONElement _element;
};
} // namespace mongo
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