org.eclipse.linuxtools.lttng/src/org/eclipse/linuxtools/lttng/event/LttngEventContent.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  *   William Bourque (wbourque@gmail.com) - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.lttng.event;
  14
  15 import org.eclipse.linuxtools.tmf.event.TmfEventContent;
  16
  17 /**
  18  * <b><u>LttngEventContent</u></b>
  19  * <p>
  20  * Lttng specific implementation of the TmfEventContent
  21  * <p>
  22  * Lttng LttngEventContent is very similar from TMF basic one. <br>
  23  */
  24 public class LttngEventContent extends TmfEventContent {
  25
  26     /**
  27      * Constructor with parameters<br>
  28      * <br>
  29      * Content will be null as no parsed content is given.
  30      *
  31      * @param thisFormat    The LttngEventFormat relative to the JniEvent
  32      */
  33     public LttngEventContent(LttngEventFormat thisFormat) {
  34         super(null, thisFormat);
  35     }
  36
  37     /**
  38      * Constructor with parameters<br>
  39      *
  40      * @param thisFormat        The LttngEventFormat relative to this JniEvent
  41      * @param thisParsedContent The string content of the JniEvent, already parsed
  42      *
  43      */
  44     public LttngEventContent(LttngEventFormat thisFormat, String thisParsedContent, LttngEventField[] thisFields) {
  45         super(thisParsedContent, thisFormat);
  46         setFields(thisFields);
  47     }
  48
  49
  50     /* (non-Javadoc)
  51      * @see org.eclipse.linuxtools.tmf.event.TmfEventContent#getFields()
  52      */
  53     @Override
  54     public LttngEventField[] getFields() {
  55
  56         // Request the field variable from the inherited class
  57         LttngEventField[] fields = (LttngEventField[])super.getFields();
  58
  59         // Field may be null if the content hasn't been parse yet
  60         // If that's the case, call the parsing function
  61         if (fields == null) {
  62             fields = ((LttngEventFormat) this.getFormat()).parse(this.getContent());
  63             setFields(fields);
  64         }
  65         return fields;
  66     }
  67
  68     /* (non-Javadoc)
  69      * @see org.eclipse.linuxtools.tmf.event.TmfEventContent#getField(int)
  70      */
  71     @Override
  72     public LttngEventField getField(int id) {
  73         assert id >= 0 && id < this.getNbFields();
  74
  75         LttngEventField returnedField = null;
  76         LttngEventField[] allFields = this.getFields();
  77
  78         if ( allFields != null ) {
  79                 returnedField = allFields[id];
  80         }
  81
  82         return returnedField;
  83     }
  84
  85     /**
  86      * @param thisEvent
  87      * @return
  88      */
  89     public LttngEventField[] getFields(LttngEvent thisEvent) {
  90
  91         // Request the field variable from the inherited class
  92         LttngEventField[] fields = (LttngEventField[])super.getFields();
  93
  94         // Field may be null if the content hasn't been parse yet
  95         // If that's the case, call the parsing function
  96         if (fields == null) {
  97             fields = ((LttngEventFormat)this.getFormat()).parse(thisEvent);
  98             setFields(fields);
  99         }
 100         return fields;
 101     }
 102
 103     /**
 104      * @param id
 105      * @param thisEvent
 106      * @return
 107      */
 108     public LttngEventField getField(int id, LttngEvent thisEvent) {
 109         assert id >= 0 && id < this.getNbFields();
 110
 111         LttngEventField returnedField = null;
 112         LttngEventField[] allFields = this.getFields(thisEvent);
 113
 114         if ( allFields != null ) {
 115                 returnedField = allFields[id];
 116         }
 117
 118         return returnedField;
 119     }
 120
 121
 122     /**
 123      * basic toString() method.
 124      *
 125      * @return Attributes of the object concatenated in String
 126      */
 127     public String toString() {
 128         return getContent().toString();
 129     }
 130 }