package uk.ac.ebi.intenz.domain.history;
   
   import uk.ac.ebi.intenz.domain.constants.EventConstant;
   import uk.ac.ebi.intenz.domain.enzyme.EnzymeEntry;
   
   import java.util.ArrayList;
   import java.util.List;
   
   /**
   * This node represents an enzyme within the history graph of an enzyme.
   *
   * @author Michael Darsow
   * @version $Revision: 1.2 $ $Date: 2008/01/28 12:33:04 $
   */
  public class HistoryNode {
    private EnzymeEntry enzymeEntry;
  
    private List<HistoryEvent> edges;
  
    private String historyLine;
  
    private boolean isRoot;
  
    /**
     * Nothing special.
     */
    public HistoryNode() {
      this.enzymeEntry = null;
      this.edges = new ArrayList<HistoryEvent>();
      this.historyLine = "";
      this.isRoot = true;
    }
  
    /**
     * Checks all events of this node for <code>DELETION</code> events and returns the source node of this event.
     *
     * @return the source node of the deletion.
     */
    public HistoryNode checkForDeletion() {
      if (edges.size() > 0) {
        HistoryEvent event = edges.get(0);
        if (event.getEventClass().equals(EventConstant.DELETION)) return event.getBeforeNode();
      }
      return this;
    }
  
    public String toString() {
      StringBuffer historyNodeString = new StringBuffer();
      historyNodeString.append("ENZYME ID: ");
      historyNodeString.append(enzymeEntry.getId());
      historyNodeString.append("\nEDGES SIZE: ");
      historyNodeString.append(edges.size());
      historyNodeString.append("\nHISTORY LINE: ");
      historyNodeString.append(historyLine);
      historyNodeString.append(isRoot ? "\nIS ROOT NODE" : "\nIS NOT ROOT NODE");
      return historyNodeString.toString();
    }
  
  
    // --------------------  GETTER/SETTER -----------------------
  
    public EnzymeEntry getEnzymeEntry() {
      return enzymeEntry;
    }
  
    public void setEnzymeEntry(EnzymeEntry enzymeEntry) {
      this.enzymeEntry = enzymeEntry;
    }
  
    public List<HistoryEvent> getEdges() {
      return edges;
    }
  
    public void setEdges(List<HistoryEvent> edges) {
      this.edges = edges;
    }
  
    public String getHistoryLine() {
      return historyLine;
    }
  
    public void setHistoryLine(String historyLine) {
      this.historyLine = historyLine;
    }
  
    public boolean isRoot() {
      return isRoot;
    }
  
    public void setRoot(boolean root) {
      isRoot = root;
    }
  }