org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/event/TmfEventField.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.event;
  14
  15 /**
  16  * <b><u>TmfEventField</u></b>
  17  * <p>
  18  * A basic event field.
  19  *
  20  * TODO: Add support for field hierarchy.
  21  */
  22 public class TmfEventField implements Cloneable {
  23
  24     // ------------------------------------------------------------------------
  25     // Attributes
  26     // ------------------------------------------------------------------------
  27
  28         protected TmfEventContent fParent;
  29         protected String fFieldId;
  30         protected Object fValue;
  31
  32     // ------------------------------------------------------------------------
  33     // Constructors
  34     // ------------------------------------------------------------------------
  35
  36     @SuppressWarnings("unused")
  37         private TmfEventField() {
  38                 throw new AssertionError();
  39     }
  40
  41     /**
  42      * @param parent
  43      * @param id
  44      * @param value
  45      */
  46     public TmfEventField(TmfEventContent parent, String id, Object value) {
  47         if (id == null) {
  48                 throw new IllegalArgumentException();
  49         }
  50         fParent  = parent;
  51         fFieldId = id;
  52         fValue   = value;
  53     }
  54
  55     /**
  56      * @param other
  57      */
  58     public TmfEventField(TmfEventField other) {
  59         if (other == null)
  60                 throw new IllegalArgumentException();
  61         fParent  = other.fParent;
  62         fFieldId = other.fFieldId;
  63                 fValue   = other.fValue;
  64     }
  65
  66     // ------------------------------------------------------------------------
  67     // Accessors
  68     // ------------------------------------------------------------------------
  69
  70     /**
  71      * @return
  72      */
  73     public TmfEventContent getParent() {
  74         return fParent;
  75     }
  76
  77     /**
  78      * @return
  79      */
  80     public String getId() {
  81         return fFieldId;
  82     }
  83
  84     /**
  85      * @return
  86      */
  87     public Object getValue() {
  88         return fValue;
  89     }
  90
  91     /**
  92      * @param value new field value
  93      */
  94     protected void setValue(Object value) {
  95         fValue = value;
  96     }
  97
  98     // ------------------------------------------------------------------------
  99     // Object
 100     // ------------------------------------------------------------------------
 101
 102     @Override
 103     public int hashCode() {
 104                 int result = 17;
 105                 result = 37 * result + fFieldId.hashCode();
 106                 result = 37 * result + fValue.hashCode();
 107         return result;
 108     }
 109
 110         @Override
 111         public boolean equals(Object other) {
 112         if (!(other instanceof TmfEventField))
 113                 return false;
 114                 TmfEventField o = (TmfEventField) other;
 115                 return fParent.equals(o.fParent) && fFieldId.equals(o.fFieldId) && fValue.equals(o.fValue);
 116     }
 117
 118     @Override
 119     @SuppressWarnings("nls")
 120         public String toString() {
 121         return "[TmfEventField(" + fFieldId + ":" + fValue.toString() + ")]";
 122     }
 123     @Override
 124         public TmfEventField clone() {
 125         TmfEventField clone = null;
 126         try {
 127                         clone = (TmfEventField) super.clone();
 128                         clone.fParent = fParent;
 129                         clone.fFieldId = new String(fFieldId);
 130                         clone.fValue = null;
 131                 } catch (CloneNotSupportedException e) {
 132                         e.printStackTrace();
 133                 }
 134                 return clone;
 135     }
 136
 137
 138 }