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1 /* 2 * NodeImpl.java 3 * 4 * Copyright (c) 1998-2001, The University of Sheffield. 5 * 6 * This file is part of GATE (see http://gate.ac.uk/), and is free 7 * software, licenced under the GNU Library General Public License, 8 * Version 2, June 1991 (in the distribution as file licence.html, 9 * and also available at http://gate.ac.uk/gate/licence.html). 10 * 11 * Valentin Tablan, 24.01.2000 12 * 13 * $Id: NodeImpl.java,v 1.9 2001/03/21 18:38:47 cursu Exp $ 14 */ 15 16 package gate.annotation; 17 18 import java.util.*; 19 import gate.*; 20 import gate.util.*; 21 22 /** Provides an implementation for the interface gate.Node. 23 * 24 */ 25 public class NodeImpl implements Node, Comparable 26 { 27 /** Debug flag 28 */ 29 private static final boolean DEBUG = false; 30 31 /** Freeze the serialization UID. */ 32 static final long serialVersionUID = -8240414984367916298L; 33 34 /** Construction from id. Creates an unrooted node. 35 */ 36 public NodeImpl (Integer id) { 37 this.id = id; 38 offset = null; 39 } // Node() 40 41 /** Construction from id and offset. 42 * 43 * @param id the Id of the new node 44 * @param offset the (temporal) offset of the Node; Should be <b>null</b> 45 * for non-anchored nodes. 46 */ 47 public NodeImpl (Integer id, Long offset) { 48 this.id = id; 49 this.offset = offset; 50 } // Node(id, offset) 51 52 /** Returns the Id of the Node. 53 */ 54 public Integer getId () { return id; } 55 56 /** Offset (will be null when the node is not anchored) 57 */ 58 public Long getOffset () { return offset; } 59 60 /** String representation 61 */ 62 public String toString() { 63 return "NodeImpl: id=" + id + "; offset=" + offset; 64 } // toString() 65 66 /** Ordering 67 */ 68 public int compareTo(Object o) throws ClassCastException { 69 Node other = (Node) o; 70 return id.compareTo(other.getId()); 71 } // compareTo 72 73 /** To allow AnnotationSet to revise offsets during editing 74 */ 75 void setOffset(Long offset) { this.offset = offset; } 76 77 /** 78 * The id of this node (used for persistency) 79 * 80 */ 81 Integer id; 82 /** 83 * The offset of this node 84 * 85 */ 86 Long offset; 87 } 88
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