initial commit of BRouter Version 0.98

brouter-mapaccess/src/main/java/btools/mapaccess/OsmNodesMap.java

@@ -0,0 +1,109 @@
+/**
+ * Container for link between two Osm nodes
+ *
+ * @author ab
+ */
+package btools.mapaccess;
+
+import java.util.*;
+
+public final class OsmNodesMap
+{
+  private HashMap<Long,OsmNode> hmap = new HashMap<Long,OsmNode>();
+
+  private NodesList completedNodes = null;
+
+  /**
+   * Get a node from the map
+   * @return the node for the given id if exist, else null
+   */
+  public OsmNode get( long id )
+  {
+    return hmap.get( new Long( id  ) );
+  }
+
+
+  public void remove( long id )
+  {
+    hmap.remove( new Long( id  ) );
+  }
+
+  public void removeCompletedNodes()
+  {
+    for( NodesList le = completedNodes; le != null; le = le.next )
+    {
+      remove( le.node.getIdFromPos() );
+    }
+    completedNodes = null;
+  }
+
+  public void registerCompletedNode( OsmNode n )
+  {
+      if ( n.completed ) return;
+      n.completed = true;
+      NodesList le = new NodesList();
+      le.node = n;
+      if ( completedNodes != null ) le.next = completedNodes;
+      completedNodes = le;
+  }
+
+  /**
+   * Put a node into the map
+   * @return the previous node if that id existed, else null
+   */
+  public OsmNode put( long id, OsmNode node )
+  {
+    return hmap.put( new Long( id  ), node );
+  }
+
+  /**
+   * Return the internal list.
+   * A reference is returned, not a copy-
+   * @return the nodes list
+   */
+  public Collection<OsmNode> nodes()
+  {
+    return hmap.values();
+  }
+
+  /**
+   * @return the number of nodes in that map
+   */
+  public int size()
+  {
+    return hmap.size();
+  }
+
+  /**
+   * cleanup the map by removing the nodes
+   * with no hollow issues
+   */
+
+  private int dontCareCount = 0;
+
+  public void removeCompleteNodes()
+  {
+   if ( ++dontCareCount < 5 ) return;
+   dontCareCount = 0;
+
+   ArrayList<OsmNode> delNodes = new ArrayList<OsmNode>();
+
+    for( OsmNode n : hmap.values() )
+    {
+      if ( n.isHollow() || n.hasHollowLinks() )
+      {
+        continue;
+      }
+      delNodes.add( n );
+    }
+
+    if ( delNodes.size() > 0 )
+    {
+//      System.out.println( "removing " + delNodes.size() + " nodes" );
+      for( OsmNode n : delNodes )
+      {
+        hmap.remove( new Long( n.getIdFromPos() ) );
+      }
+    }
+  }
+}