VirtualEdgeIterator.java

/*
 * Copyright 2015 Peter Karich.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.graphhopper.routing;

import com.graphhopper.routing.util.FlagEncoder;
import com.graphhopper.util.*;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Peter Karich
 */
class VirtualEdgeIterator implements EdgeIterator, CHEdgeIteratorState
{
    private final List<EdgeIteratorState> edges;
    private int current;

    public VirtualEdgeIterator( int edgeCount )
    {
        edges = new ArrayList<EdgeIteratorState>(edgeCount);
        reset();
    }

    void add( EdgeIteratorState edge )
    {
        edges.add(edge);
    }

    EdgeIterator reset()
    {
        current = -1;
        return this;
    }

    int count()
    {
        return edges.size();
    }

    @Override
    public boolean next()
    {
        current++;
        return current < edges.size();
    }

    @Override
    public EdgeIteratorState detach( boolean reverse )
    {
        if (reverse)
            throw new IllegalStateException("Not yet supported");
        return edges.get(current);
    }

    @Override
    public int getEdge()
    {
        return edges.get(current).getEdge();
    }

    @Override
    public int getBaseNode()
    {
        return edges.get(current).getBaseNode();
    }

    @Override
    public int getAdjNode()
    {
        return edges.get(current).getAdjNode();
    }

    @Override
    public PointList fetchWayGeometry( int mode )
    {
        return edges.get(current).fetchWayGeometry(mode);
    }

    @Override
    public EdgeIteratorState setWayGeometry( PointList list )
    {
        return edges.get(current).setWayGeometry(list);
    }

    @Override
    public double getDistance()
    {
        return edges.get(current).getDistance();
    }

    @Override
    public EdgeIteratorState setDistance( double dist )
    {
        return edges.get(current).setDistance(dist);
    }

    @Override
    public long getFlags()
    {
        return edges.get(current).getFlags();
    }

    @Override
    public EdgeIteratorState setFlags( long flags )
    {
        return edges.get(current).setFlags(flags);
    }

    @Override
    public String getName()
    {
        return edges.get(current).getName();
    }

    @Override
    public EdgeIteratorState setName( String name )
    {
        return edges.get(current).setName(name);
    }

    @Override
    public boolean getBoolean( int key, boolean reverse, boolean _default )
    {
        return edges.get(current).getBoolean(key, reverse, _default);
    }

    @Override
    public String toString()
    {
        return edges.toString();
    }

    @Override
    public int getAdditionalField()
    {
        return edges.get(current).getAdditionalField();
    }

    @Override
    public EdgeIteratorState setAdditionalField( int value )
    {
        return edges.get(current).setAdditionalField(value);
    }

    @Override
    public EdgeIteratorState copyPropertiesTo( EdgeIteratorState edge )
    {
        return edges.get(current).copyPropertiesTo(edge);
    }

    @Override
    public boolean isBackward( FlagEncoder encoder )
    {
        return edges.get(current).isBackward(encoder);
    }

    @Override
    public boolean isForward( FlagEncoder encoder )
    {
        return edges.get(current).isForward(encoder);
    }

    @Override
    public boolean isShortcut()
    {
        EdgeIteratorState edge = edges.get(current);
        return edge instanceof CHEdgeIteratorState && ((CHEdgeIteratorState) edge).isShortcut();
    }

    @Override
    public double getWeight()
    {
        // will be called only from PreparationWeighting and if isShortcut is true
        return ((CHEdgeIteratorState) edges.get(current)).getWeight();
    }

    @Override
    public CHEdgeIteratorState setWeight( double weight )
    {
        throw new UnsupportedOperationException("Not supported.");
    }

    @Override
    public int getSkippedEdge1()
    {
        throw new UnsupportedOperationException("Not supported.");
    }

    @Override
    public int getSkippedEdge2()
    {
        throw new UnsupportedOperationException("Not supported.");
    }

    @Override
    public void setSkippedEdges( int edge1, int edge2 )
    {
        throw new UnsupportedOperationException("Not supported.");
    }

    @Override
    public boolean canBeOverwritten( long flags )
    {
        throw new UnsupportedOperationException("Not supported.");
    }
}