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diff --git a/src/mongo/bson/bson_db.h b/src/mongo/bson/bson_db.h
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+/** @file bson_db.h
+
+    This file contains the implementation of BSON-related methods that are required
+    by the MongoDB database server.
+
+    Normally, for standalone BSON usage, you do not want this file - it will tend to
+    pull in some other files from the MongoDB project. Thus, bson.h (the main file
+    one would use) does not include this file.
+*/
+
+/*    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 "../util/optime.h"
+#include "../util/time_support.h"
+
+namespace mongo {
+
+    /**
+    Timestamps are a special BSON datatype that is used internally for replication.
+    Append a timestamp element to the object being ebuilt.
+    @param time - in millis (but stored in seconds)
+    */
+    inline BSONObjBuilder& BSONObjBuilder::appendTimestamp( const StringData& fieldName , unsigned long long time , unsigned int inc ) {
+        OpTime t( (unsigned) (time / 1000) , inc );
+        appendTimestamp( fieldName , t.asDate() );
+        return *this;
+    }
+
+    inline OpTime BSONElement::_opTime() const {
+        if( type() == mongo::Date || type() == Timestamp )
+            return OpTime( *reinterpret_cast< const unsigned long long* >( value() ) );
+        return OpTime();
+    }
+
+    inline string BSONElement::_asCode() const {
+        switch( type() ) {
+        case mongo::String:
+        case Code:
+            return string(valuestr(), valuestrsize()-1);
+        case CodeWScope:
+            return string(codeWScopeCode(), *(int*)(valuestr())-1);
+        default:
+            log() << "can't convert type: " << (int)(type()) << " to code" << endl;
+        }
+        uassert( 10062 ,  "not code" , 0 );
+        return "";
+    }
+
+    inline BSONObjBuilder& BSONObjBuilderValueStream::operator<<(DateNowLabeler& id) {
+        _builder->appendDate(_fieldName, jsTime());
+        _fieldName = 0;
+        return *_builder;
+    }
+
+    inline BSONObjBuilder& BSONObjBuilderValueStream::operator<<(NullLabeler& id) {
+        _builder->appendNull(_fieldName);
+        _fieldName = 0;
+        return *_builder;
+    }
+
+    inline BSONObjBuilder& BSONObjBuilderValueStream::operator<<(MinKeyLabeler& id) {
+        _builder->appendMinKey(_fieldName);
+        _fieldName = 0;
+        return *_builder;
+    }
+
+    inline BSONObjBuilder& BSONObjBuilderValueStream::operator<<(MaxKeyLabeler& id) {
+        _builder->appendMaxKey(_fieldName);
+        _fieldName = 0;
+        return *_builder;
+    }
+
+}