/**
* Pass in the id of the way, and gets the way object.
*
* @param wayID of the way
* @param waysFileData the file data representing the ways file we want to binary search through
* @return the way object
* @throws IOException
*/
public Way getWayFromID(String wayID, FileData waysFileData)
throws IllegalArgumentException, IOException {
String chunkID = MapsAlgorithms.getChunkID(wayID);
if (_chunkIDToWaysMaps.containsKey(chunkID)
&& _chunkIDToWaysMaps.get(chunkID).containsKey(wayID)) {
return _chunkIDToWaysMaps.get(chunkID).get(wayID);
} else {
String wayLine =
FileSearchAlgorithms.binarySearch(waysFileData, wayID, waysFileData.headerIndices[0]);
return getWayFromLine(wayLine, waysFileData);
}
}
/**
* Given the id of the node, gets a MapGraphNode that represents the node How is this different
* from the previous method? It takes in a fileData and is ONLY called by the intersection request
* handler which needs a new copy of the file data
*
* @param nodeID the node's id
* @param nodesFileData the file data representing the nodes file we want to binary search through
* @return a MapGraphNode that represents the node
* @throws IOException
*/
public MapGraphNode getNodeFromID(String nodeID, FileData nodesFileData)
throws IllegalArgumentException, IOException {
if (nodeID == null) throw new IllegalArgumentException("ID is null");
if (nodeID.equals("")) throw new IllegalArgumentException("ID is an empty string");
String chunkID = MapsAlgorithms.getChunkID(nodeID);
if (_chunkIDToNodesMaps.containsKey(chunkID)
&& _chunkIDToNodesMaps.get(chunkID).containsKey(nodeID)) {
return _chunkIDToNodesMaps.get(chunkID).get(nodeID);
} else {
String nodeLine =
FileSearchAlgorithms.binarySearch(nodesFileData, nodeID, nodesFileData.headerIndices[0]);
return getNodeFromLine(nodeLine, nodesFileData);
}
}