    001    package org.maltparser.parser.history;
    002
    003    import java.util.ArrayList;
    004
    005    import org.maltparser.core.exception.MaltChainedException;
    006    import org.maltparser.core.pool.ObjectPoolList;
    007    import org.maltparser.parser.history.action.GuideUserAction;
    008    /**
    009     *
    010     * @author Johan Hall
    011    */
    012    public class HistoryList extends HistoryStructure {
    013            protected ArrayList<HistoryNode> list;
    014            protected final ObjectPoolList<HistoryNode> nodePool;
    015    //      protected BufferedWriter writer;
    016
    017            public HistoryList() throws MaltChainedException {
    018                    super();
    019                    list = new ArrayList<HistoryNode>();
    020                    nodePool = new ObjectPoolList<HistoryNode>() {
    021                            protected HistoryNode create() throws MaltChainedException { return new HistoryListNode(null, null); }
    022                            public void resetObject(HistoryNode o) throws MaltChainedException { o.clear(); }
    023                    };
    024    //              try {
    025    //                      writer = new BufferedWriter(new FileWriter("tseq.dat"));
    026    //              } catch (IOException e) {
    027    //                      throw new MaltChainedException("", e);
    028    //              }
    029            }
    030
    031            public HistoryNode getNewHistoryNode(HistoryNode previousNode, GuideUserAction action) throws MaltChainedException {
    032                    HistoryNode node = nodePool.checkOut();
    033                    node.setAction(action);
    034                    node.setPreviousNode(previousNode);
    035                    list.add(node);
    036                    return node;
    037            }
    038
    039            public void clear() throws MaltChainedException {
    040                    nodePool.checkInAll();
    041                    list.clear();
    042            }
    043
    044            public boolean equals(Object obj) {
    045                    return super.equals(obj);
    046            }
    047
    048            public int hashCode() {
    049                    return super.hashCode();
    050            }
    051
    052            public void toFile() throws MaltChainedException {
    053    //              try {
    054    //                      for (int i = 0; i < list.size(); i++) {
    055    //                              writer.write(((ComplexDecisionAction)list.get(i).getAction()).getSingleDecision(0).getDecisionSymbol());
    056    //                              writer.write("\n");
    057    //                              writer.flush();
    058    //                      }
    059    //                      writer.write("\n");
    060    //              } catch (IOException e) {
    061    //                      throw new MaltChainedException("", e);
    062    //              }
    063            }
    064
    065            public void close() throws MaltChainedException {
    066    //              if (writer != null) {
    067    //                      try {
    068    //                              writer.flush();
    069    //                              writer.close();
    070    //                              writer = null;
    071    //                      } catch (IOException e) {
    072    //                              throw new MaltChainedException("", e);
    073    //                      }
    074    //              }
    075            }
    076
    077            public String toString() {
    078                    final StringBuilder sb = new StringBuilder();
    079                    for (int i = 0; i < list.size(); i++) {
    080                            sb.append(list.get(i));
    081                            if (i < list.size()-1) {
    082                                    sb.append(", ");
    083                            }
    084                    }
    085                    return sb.toString();
    086            }
    087
    088    }