cz/vutbr/fit/dudka/SGVis/Data/RelationMap.java

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

import java.util.HashMap;

public class RelationMap<KEY> {
  private HashMap<KEY, RelationSet> map;
  
  public RelationMap() {
    map = new HashMap<KEY, RelationSet>();
  }
  
  public RelationMap(RelationMap<KEY> ref) {
    map = new HashMap<KEY, RelationSet>(ref.map);
  }
  
  public RelationSet get(Object key) {
    RelationSet rset = map.get(key);
    if (null==rset)
      rset = new RelationSet();
    return rset;
  }
  
  public void addToSet(KEY key, Relation relation)
  {
    RelationSet rl = this.get(key);
    rl.add(relation);
    map.put(key, rl);
  }
  
  public RelationMap<KEY> clone() {
    return new RelationMap<KEY>(this);
  }
}

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