VPIndexStatistics.java

/**
 * GeDBIT.app.QueryEvaluator 2006.06.27
 *
 * Copyright Information:
 *
 * Change Log:
 * 2006.06.27: Copied from jdb 1.0, by Rui Mao
 */
package GeDBIT.app;

import GeDBIT.index.Index;
import GeDBIT.index.TableManager;
import GeDBIT.type.Table;

/**
 * 
 * @author Rui Mao
 * @version 2007.08.02
 */
public class VPIndexStatistics {
    /**
     * @param args
     */
    public static void main(String[] args) {
	// arguments and default values
	String indexName = "";

	// parse arguments, and set values
	for (int i = 0; i < args.length; i = i + 2) {
	    if (args[i].equalsIgnoreCase("-d"))
		indexName = args[i + 1];

	    else
		throw new IllegalArgumentException("Invalid option " + args[i]);
	}

	// check arguments
	if (indexName == "")
	    throw new IllegalArgumentException("Invalid Index file name!");

	// load index from file
	Table dataTable = TableManager.getTableManager(indexName).getTable(
		indexName);
	Index index;
	if (dataTable != null)
	    index = dataTable.getIndex();
	else
	    throw new Error("index: " + indexName + " does not exist");

	System.out.println(((GeDBIT.index.AbstractIndex) index)
		.getStoredDistanceNumber());
    }
}