/**
* <b><u>ITmfTimestamp</u></b>
* <p>
+ * The fundamental time reference in the TMF.
+ * <p>
+ * It defines a generic timestamp interface in its most basic form:
+ * <ul>
+ * <li>timestamp = [value] * 10**[scale] +/- [precision]
+ * </ul>
+ * Where:
+ * <ul>
+ * <li>[value] is an unstructured integer value
+ * <li>[scale] is the magnitude of the value wrt some application-specific
+ * base unit (e.g. the second)
+ * <li>[precision] indicates the error on the value (useful for comparing
+ * timestamps in different scales). Default: 0.
+ * </ul>
*/
public interface ITmfTimestamp extends Cloneable, Comparable<ITmfTimestamp> {
*/
public ITmfTimestamp getDelta(ITmfTimestamp ts);
- // Cloneable
+ /**
+ * @return a clone of the timestamp
+ */
public ITmfTimestamp clone();
- // Comparable
+ /* (non-Javadoc)
+ * @see java.lang.Comparable#compareTo(java.lang.Object)
+ */
public int compareTo(ITmfTimestamp ts);
}
--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2012 Ericsson
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v1.0 which
+ * accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Francois Chouinard - Initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.linuxtools.tmf.core.event;
+
+/**
+ * <b><u>TmfSimpleTimestamp</u></b>
+ * <p>
+ * A simplified timestamp where scale and precision are set to 0.
+ */
+public class TmfSimpleTimestamp extends TmfTimestamp {
+
+ // ------------------------------------------------------------------------
+ // Constructors
+ // ------------------------------------------------------------------------
+
+ /**
+ * Default constructor
+ */
+ public TmfSimpleTimestamp() {
+ this(0);
+ }
+
+ /**
+ * Full constructor
+ *
+ * @param value the timestamp value
+ */
+ public TmfSimpleTimestamp(long value) {
+ super(value, 0, 0);
+ }
+
+ /**
+ * Copy constructor
+ *
+ * @param timestamp the timestamp to copy
+ */
+ public TmfSimpleTimestamp(TmfSimpleTimestamp timestamp) {
+ if (timestamp == null || timestamp.getScale() != 0 || timestamp.getPrecision() != 0)
+ throw new IllegalArgumentException();
+ fValue = timestamp.getValue();
+ fScale = 0;
+ fPrecision = 0;
+ }
+
+ // ------------------------------------------------------------------------
+ // ITmfTimestamp
+ // ------------------------------------------------------------------------
+
+ @Override
+ public ITmfTimestamp normalize(long offset, int scale) throws ArithmeticException {
+ if (scale == 0) {
+ return new TmfSimpleTimestamp(fValue + offset);
+ }
+ return super.normalize(offset, scale);
+ }
+
+ @Override
+ public int compareTo(ITmfTimestamp ts, boolean withinPrecision) {
+ if (ts instanceof TmfSimpleTimestamp) {
+ long delta = fValue - ts.getValue();
+ return (delta == 0) ? 0 : (delta > 0) ? 1 : -1;
+ }
+ return super.compareTo(ts, withinPrecision);
+ }
+
+ @Override
+ public ITmfTimestamp getDelta(ITmfTimestamp ts) {
+ if (ts instanceof TmfSimpleTimestamp) {
+ return new TmfSimpleTimestamp(fValue - ts.getValue());
+ }
+ return super.getDelta(ts);
+ }
+
+ // ------------------------------------------------------------------------
+ // Object
+ // ------------------------------------------------------------------------
+
+ @Override
+ public boolean equals(Object other) {
+ if (this == other)
+ return true;
+ if (other == null)
+ return false;
+ if (!(other instanceof TmfSimpleTimestamp))
+ return super.equals(other);
+ TmfSimpleTimestamp ts = (TmfSimpleTimestamp) other;
+ return compareTo(ts, false) == 0;
+ }
+
+ @Override
+ @SuppressWarnings("nls")
+ public String toString() {
+ return "TmfSimpleTimestamp [fValue=" + fValue + ", fScale=" + fScale + ", fPrecision=" + fPrecision + "]";
+ }
+
+}
projects / deliverable / tracecompass.git / commitdiff
