cz/vutbr/fit/dudka/SGVis/Visual/NodeTable.java

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package cz.vutbr.fit.dudka.SGVis.Visual;

import java.util.HashMap;

class NodeTable {
  private HashMap<String,Integer> textToIdMap;
  private HashMap<Integer,String> idToTextMap;
  public NodeTable() {
    textToIdMap = new HashMap<String, Integer>();
    idToTextMap = new HashMap<Integer, String>();
  }
  public void add(String text, int id) {
    textToIdMap.put(text, id);
    idToTextMap.put(id, text);
  }
  public void remove(String text) {
    Integer id = (Integer) textToIdMap.get(text);
    assert (null!=id):"Invalid lookup";
    textToIdMap.remove(text);
    idToTextMap.remove(id);
  }
  public void remove(int id) {
    String text = (String) idToTextMap.get(id);
    assert (null!=text):"Invalid lookup";
    idToTextMap.remove(id);
    textToIdMap.remove(text);
  }
  public int getId(String text) {
    Integer id = (Integer) textToIdMap.get(text);
    assert (null!=id):"Invalid lookup";
    return id.intValue();
  }
  public boolean contains(String text) {
    Integer id = (Integer) textToIdMap.get(text);
    return (null!=id);
  }
  public void clear() {
    textToIdMap.clear();
    idToTextMap.clear();
  }
}

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