[DOC] Improved some documentation and added the shutdown flag test.

src/common/datastructures/WUnionFind.h

@@ -33,7 +33,7 @@
 #include "../WExportCommon.h"
 /**
  * Implements a very simple union-find datastructure aka disjoint_sets.
- * \note I know there is a boost solution on that:
+ * \note I know there is a boost solution on that, but I didn't get it to work and I don't know how fast it is:
  * http://www.boost.org/doc/libs/1_42_0/libs/disjoint_sets/disjoint_sets.html
  *
  * And you may use it like this:
@@ -117,7 +117,7 @@ public:
     void merge( size_t i, size_t j );
 
 private:
-    std::vector< size_t > m_component; //!< Stores for each index its cluster ID
+    std::vector< size_t > m_component; //!< Stores for each index its ID
 };
 
 

src/modules/detTractClustering/WMDetTractClustering.cpp

@@ -90,10 +90,16 @@ void WMDetTractClustering::moduleMain()
     {
         m_moduleState.wait();
 
+        if ( m_shutdownFlag() ) // in case of shutdown => abort
+        {
+            break;
+        }
+
         if ( !m_tractInput->getData().get() ) // ok, the output has not yet sent data
         {
             continue;
         }
+
         if( m_rawTracts != m_tractInput->getData() ) // in case data has changed
         {
             m_rawTracts = m_tractInput->getData();
@@ -288,7 +294,6 @@ void WMDetTractClustering::cluster()
     m_dLtTableExists = true;
 
     boost::shared_ptr< WProgress > eraseProgress( new WProgress( "Erasing clusters", 1 ) );
-//    m_progress->addSubProgress( eraseProgress );
 
     // remove empty clusters
     WFiberCluster emptyCluster;