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// bsontypes.h
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "mongo/util/assert_util.h"
namespace bson { }
namespace mongo {
class BSONArrayBuilder;
class BSONElement;
class BSONObj;
class BSONObjBuilder;
class BSONObjBuilderValueStream;
class BSONObjIterator;
class Ordering;
struct BSONArray; // empty subclass of BSONObj useful for overloading
struct BSONElementCmpWithoutField;
extern BSONObj maxKey;
extern BSONObj minKey;
/**
the complete list of valid BSON types
see also bsonspec.org
*/
enum BSONType {
/** smaller than all other types */
MinKey=-1,
/** end of object */
EOO=0,
/** double precision floating point value */
NumberDouble=1,
/** character string, stored in utf8 */
String=2,
/** an embedded object */
Object=3,
/** an embedded array */
Array=4,
/** binary data */
BinData=5,
/** Undefined type */
Undefined=6,
/** ObjectId */
jstOID=7,
/** boolean type */
Bool=8,
/** date type */
Date=9,
/** null type */
jstNULL=10,
/** regular expression, a pattern with options */
RegEx=11,
/** deprecated / will be redesigned */
DBRef=12,
/** deprecated / use CodeWScope */
Code=13,
/** a programming language (e.g., Python) symbol */
Symbol=14,
/** javascript code that can execute on the database server, with SavedContext */
CodeWScope=15,
/** 32 bit signed integer */
NumberInt = 16,
/** Updated to a Date with value next OpTime on insert */
Timestamp = 17,
/** 64 bit integer */
NumberLong = 18,
/** max type that is not MaxKey */
JSTypeMax=18,
/** larger than all other types */
MaxKey=127
};
/**
* returns the name of the argument's type
* defined in jsobj.cpp
*/
const char* typeName (BSONType type);
/* subtypes of BinData.
bdtCustom and above are ones that the JS compiler understands, but are
opaque to the database.
*/
enum BinDataType {
BinDataGeneral=0,
Function=1,
ByteArrayDeprecated=2, /* use BinGeneral instead */
bdtUUID = 3, /* deprecated */
newUUID=4, /* language-independent UUID format across all drivers */
MD5Type=5,
bdtCustom=128
};
/** Returns a number for where a given type falls in the sort order.
* Elements with the same return value should be compared for value equality.
* The return value is not a BSONType and should not be treated as one.
* Note: if the order changes, indexes have to be re-built or than can be corruption
*/
inline int canonicalizeBSONType(BSONType type) {
switch (type) {
case MinKey:
case MaxKey:
return type;
case EOO:
case Undefined:
return 0;
case jstNULL:
return 5;
case NumberDouble:
case NumberInt:
case NumberLong:
return 10;
case mongo::String:
case Symbol:
return 15;
case Object:
return 20;
case mongo::Array:
return 25;
case BinData:
return 30;
case jstOID:
return 35;
case mongo::Bool:
return 40;
case mongo::Date:
case Timestamp:
return 45;
case RegEx:
return 50;
case DBRef:
return 55;
case Code:
return 60;
case CodeWScope:
return 65;
default:
verify(0);
return -1;
}
}
}
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