1 /*******************************************************************************
2 * Copyright (c) 2011-2013 Ericsson, Ecole Polytechnique de Montreal and others
4 * All rights reserved. This program and the accompanying materials are made
5 * 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
9 * Contributors: Matthew Khouzam - Initial API and implementation
10 * Contributors: Simon Marchi - Initial API and implementation
11 *******************************************************************************/
13 package org
.eclipse
.linuxtools
.ctf
.core
.trace
;
15 import java
.util
.HashMap
;
16 import java
.util
.HashSet
;
20 import org
.eclipse
.linuxtools
.ctf
.core
.event
.IEventDeclaration
;
21 import org
.eclipse
.linuxtools
.ctf
.core
.event
.types
.StructDeclaration
;
22 import org
.eclipse
.linuxtools
.internal
.ctf
.core
.event
.metadata
.exceptions
.ParseException
;
25 * <b><u>Stream</u></b>
27 * Represents a stream in a trace.
32 // ------------------------------------------------------------------------
34 // ------------------------------------------------------------------------
38 * The numerical ID of the stream
40 private Long id
= null;
43 * Declarations of the stream-specific structures
45 private StructDeclaration packetContextDecl
= null;
46 private StructDeclaration eventHeaderDecl
= null;
47 private StructDeclaration eventContextDecl
= null;
50 * The trace to which the stream belongs
52 private CTFTrace trace
= null;
55 * Maps event ids to events
57 private Map
<Long
, IEventDeclaration
> events
= new HashMap
<Long
, IEventDeclaration
>();
60 * The inputs associated to this stream
62 private final Set
<StreamInput
> inputs
= new HashSet
<StreamInput
>();
64 // ------------------------------------------------------------------------
66 // ------------------------------------------------------------------------
69 * Constructs a Stream that belongs to a Trace
72 * The trace to which belongs this stream.
74 public Stream(CTFTrace trace
) {
78 // ------------------------------------------------------------------------
79 // Getters/Setters/Predicates
80 // ------------------------------------------------------------------------
83 * Sets the id of a stream
84 * @param id the id of a stream
86 public void setId(long id
) {
88 this.events
= trace
.createEvents(this.id
);
92 * Gets the id of a stream
93 * @return id the id of a stream
100 * Is the id of a stream set
102 * @return If the ID is set or not
104 public boolean isIdSet() {
110 * @return is the event header set (timestamp and stuff) (see Ctf Spec)
112 public boolean isEventHeaderSet() {
113 return eventHeaderDecl
!= null;
118 * @return is the event context set (pid and stuff) (see Ctf Spec)
120 public boolean isEventContextSet() {
121 return eventContextDecl
!= null;
126 * @return Is the packet context set (see Ctf Spec)
128 public boolean isPacketContextSet() {
129 return packetContextDecl
!= null;
134 * @param eventHeader the current event header for all events in this stream
136 public void setEventHeader(StructDeclaration eventHeader
) {
137 this.eventHeaderDecl
= eventHeader
;
142 * @param eventContext the context for all events in this stream
144 public void setEventContext(StructDeclaration eventContext
) {
145 this.eventContextDecl
= eventContext
;
150 * @param packetContext the packet context for all packets in this stream
152 public void setPacketContext(StructDeclaration packetContext
) {
153 this.packetContextDecl
= packetContext
;
158 * @return the event header declaration in structdeclaration form
160 public StructDeclaration
getEventHeaderDecl() {
161 return eventHeaderDecl
;
166 * @return the event context declaration in structdeclaration form
168 public StructDeclaration
getEventContextDecl() {
169 return eventContextDecl
;
174 * @return the packet context declaration in structdeclaration form
176 public StructDeclaration
getPacketContextDecl() {
177 return packetContextDecl
;
182 * @return the set of all stream inputs for this stream
184 public Set
<StreamInput
> getStreamInputs() {
190 * @return the parent trace
192 public CTFTrace
getTrace() {
198 * @return all the event declarations for this stream, using the id as a key for the hashmap.
200 public Map
<Long
, IEventDeclaration
> getEvents() {
204 // ------------------------------------------------------------------------
206 // ------------------------------------------------------------------------
209 * Adds an event to the event map.
211 * An event in a stream can omit its id if it is the only event in this
212 * stream. An event for which no id has been specified has a null id. It is
213 * thus not possible to add an event with the null key if the map is not
214 * empty. It is also not possible to add an event to the map if the null key
215 * is present in the map.
219 * @throws ParseException
220 * If there was a problem reading the event or adding it to the
223 public void addEvent(IEventDeclaration event
) throws ParseException
{
225 * If there is an event without id (the null key), it must be the only
228 if (events
.get(null) != null) {
229 throw new ParseException(
230 "Event without id with multiple events in a stream"); //$NON-NLS-1$
234 * If there is an event without id (the null key), it must be the only
237 if ((event
.getId() == null) && (events
.size() != 0)) {
238 throw new ParseException(
239 "Event without id with multiple events in a stream"); //$NON-NLS-1$
242 /* Check if an event with the same ID already exists */
243 if (events
.get(event
.getId()) != null) {
244 throw new ParseException("Event id already exists"); //$NON-NLS-1$
247 /* Put the event in the map */
248 events
.put(event
.getId(), event
);
252 * Add an input to this Stream
255 * The StreamInput to add.
257 public void addInput(StreamInput input
) {
262 public String
toString() {
263 return "Stream [id=" + id
+ ", packetContextDecl=" + packetContextDecl
//$NON-NLS-1$ //$NON-NLS-2$
264 + ", eventHeaderDecl=" + eventHeaderDecl
//$NON-NLS-1$
265 + ", eventContextDecl=" + eventContextDecl
+ ", trace=" + trace
//$NON-NLS-1$ //$NON-NLS-2$
266 + ", events=" + events
+ ", inputs=" + inputs
+ "]"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$