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