// BamMultiMerger_p.h (c) 2010 Derek Barnett
// Marth Lab, Department of Biology, Boston College
// ---------------------------------------------------------------------------
-// Last modified: 9 September 2011 (DB)
+// Last modified: 28 September 2011 (DB)
// ---------------------------------------------------------------------------
// Provides merging functionality for BamMultiReader. At this point, supports
// sorting results by (refId, position) or by read name.
typedef ReaderAlignment ValueType;
typedef std::pair<KeyType, ValueType> ElementType;
- typedef std::multimap<KeyType, ValueType> ContainerType;
+ struct SortLessThanPosition {
+ bool operator() (const KeyType& lhs, const KeyType& rhs) {
+
+ // force unmapped alignments to end
+ if ( lhs.first == -1 ) return false;
+ if ( rhs.first == -1 ) return true;
+
+ // sort first on RefID, then by Position
+ if ( lhs.first != rhs.first )
+ return lhs.first < rhs.first;
+ else
+ return lhs.second < rhs.second;
+ }
+ };
+
+ typedef SortLessThanPosition Compare;
+
+ typedef std::multimap<KeyType, ValueType, Compare> ContainerType;
typedef ContainerType::iterator DataIterator;
typedef ContainerType::const_iterator DataConstIterator;