1 /*******************************************************************************
2 * Copyright (c) 2012 Ericsson
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
10 * Alexandre Montplaisir - Initial API
11 ******************************************************************************/
13 package org
.eclipse
.linuxtools
.tmf
.core
.statevalue
;
17 * This is the interface for using state values and reading their contents.
22 public interface ITmfStateValue
{
25 * Each implementation has to supply a "type" number. This will get written
26 * as-is in the History file to recognize the type, so it needs to be unique
28 * @return The unique "int8" assigned to this state value type
30 public byte getType();
33 * Only "null values" should return true here
35 * @return True if this type of SV is considered "null", false if it
36 * contains a real value.
38 public boolean isNull();
41 * Read the contained value as an 'int' primitive
43 * @return The integer contained in the state value
44 * @throws StateValueTypeException
45 * If the contained value cannot be read as an integer
47 public int unboxInt() throws StateValueTypeException
;
50 * Read the contained value as a String
52 * @return The String contained in the state value
53 * @throws StateValueTypeException
54 * If the contained value cannot be read as a String
56 public String
unboxStr() throws StateValueTypeException
;
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