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C++ OwnedPointerVector::rbegin方法代码示例

本文整理汇总了C++中OwnedPointerVector::rbegin方法的典型用法代码示例。如果您正苦于以下问题:C++ OwnedPointerVector::rbegin方法的具体用法?C++ OwnedPointerVector::rbegin怎么用?C++ OwnedPointerVector::rbegin使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在OwnedPointerVector的用法示例。


在下文中一共展示了OwnedPointerVector::rbegin方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: mergeChunks


//.........这里部分代码省略.........
            chunksToMerge.mutableVector().push_back( saved.release() );
        }

        if ( chunksToMerge.empty() ) {

            *errMsg = stream() << "could not merge chunks, collection " << nss.ns()
                               << " range starting at " << minKey
                               << " and ending at " << maxKey
                               << " does not belong to shard " << shardingState.getShardName();

            warning() << *errMsg << endl;
            return false;
        }

        //
        // Validate the range starts and ends at chunks and has no holes, error if not valid
        //

        BSONObj firstDocMin = ( *chunksToMerge.begin() )->getMin();
        BSONObj firstDocMax = ( *chunksToMerge.begin() )->getMax();
        // minKey is inclusive
        bool minKeyInRange = rangeContains( firstDocMin, firstDocMax, minKey );

        if ( !minKeyInRange ) {

            *errMsg = stream() << "could not merge chunks, collection " << nss.ns()
                               << " range starting at " << minKey
                               << " does not belong to shard " << shardingState.getShardName();

            warning() << *errMsg << endl;
            return false;
        }

        BSONObj lastDocMin = ( *chunksToMerge.rbegin() )->getMin();
        BSONObj lastDocMax = ( *chunksToMerge.rbegin() )->getMax();
        // maxKey is exclusive
        bool maxKeyInRange = lastDocMin.woCompare( maxKey ) < 0 &&
                lastDocMax.woCompare( maxKey ) >= 0;

        if ( !maxKeyInRange ) {
            *errMsg = stream() << "could not merge chunks, collection " << nss.ns()
                               << " range ending at " << maxKey
                               << " does not belong to shard " << shardingState.getShardName();

            warning() << *errMsg << endl;
            return false;
        }

        bool validRangeStartKey = firstDocMin.woCompare( minKey ) == 0;
        bool validRangeEndKey = lastDocMax.woCompare( maxKey ) == 0;

        if ( !validRangeStartKey || !validRangeEndKey ) {

            *errMsg = stream() << "could not merge chunks, collection " << nss.ns()
                               << " does not contain a chunk "
                               << ( !validRangeStartKey ? "starting at " + minKey.toString() : "" )
                               << ( !validRangeStartKey && !validRangeEndKey ? " or " : "" )
                               << ( !validRangeEndKey ? "ending at " + maxKey.toString() : "" );

            warning() << *errMsg << endl;
            return false;
        }

        if ( chunksToMerge.size() == 1 ) {

            *errMsg = stream() << "could not merge chunks, collection " << nss.ns()
开发者ID:leonidbl91,项目名称:mongo,代码行数:67,代码来源:d_merge.cpp


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