The serialVersionUID of this class is -4679739485102359104L.
+ *
+ * @serial include
+ *
+ * @since 1.5
+ */
+@SuppressWarnings("serial") // serialVersionUID not constant
+class NumericValueExp extends QueryEval implements ValueExp {
+
+ // Serialization compatibility stuff:
+ // Two serial forms are supported in this class. The selected form depends
+ // on system property "jmx.serial.form":
+ // - "1.0" for JMX 1.0
+ // - any other value for JMX 1.1 and higher
+ //
+ // Serial version for old serial form
+ private static final long oldSerialVersionUID = -6227876276058904000L;
+ //
+ // Serial version for new serial form
+ private static final long newSerialVersionUID = -4679739485102359104L;
+ //
+ // Serializable fields in old serial form
+ private static final ObjectStreamField[] oldSerialPersistentFields =
+ {
+ new ObjectStreamField("longVal", Long.TYPE),
+ new ObjectStreamField("doubleVal", Double.TYPE),
+ new ObjectStreamField("valIsLong", Boolean.TYPE)
+ };
+ //
+ // Serializable fields in new serial form
+ private static final ObjectStreamField[] newSerialPersistentFields =
+ {
+ new ObjectStreamField("val", Number.class)
+ };
+ //
+ // Actual serial version and serial form
+ private static final long serialVersionUID;
+
+ /**
+ * @serialField val Number The numeric value
+ *
+ *
The serialVersionUID of this class is -4679739485102359104L.
+ */
+ private static final ObjectStreamField[] serialPersistentFields;
+ private Number val = 0.0;
+
+ private static boolean compat = false;
+ static {
+ try {
+ GetPropertyAction act = new GetPropertyAction("jmx.serial.form");
+ String form = AccessController.doPrivileged(act);
+ compat = (form != null && form.equals("1.0"));
+ } catch (Exception e) {
+ // OK: exception means no compat with 1.0, too bad
+ }
+ if (compat) {
+ serialPersistentFields = oldSerialPersistentFields;
+ serialVersionUID = oldSerialVersionUID;
+ } else {
+ serialPersistentFields = newSerialPersistentFields;
+ serialVersionUID = newSerialVersionUID;
+ }
+ }
+ //
+ // END Serialization compatibility stuff
+
+
+ /**
+ * Basic constructor.
+ */
+ public NumericValueExp() {
+ }
+
+ /** Creates a new NumericValue representing the numeric literal @{code val}.*/
+ NumericValueExp(Number val)
+ {
+ this.val = val;
+ }
+
+ /**
+ * Returns a double numeric value
+ */
+ public double doubleValue() {
+ if (val instanceof Long || val instanceof Integer)
+ {
+ return (double)(val.longValue());
+ }
+ return val.doubleValue();
+ }
+
+ /**
+ * Returns a long numeric value
+ */
+ public long longValue() {
+ if (val instanceof Long || val instanceof Integer)
+ {
+ return val.longValue();
+ }
+ return (long)(val.doubleValue());
+ }
+
+ /**
+ * Returns true is if the numeric value is a long, false otherwise.
+ */
+ public boolean isLong() {
+ return (val instanceof Long || val instanceof Integer);
+ }
+
+ /**
+ * Returns the string representing the object
+ */
+ public String toString() {
+ if (val == null)
+ return "null";
+ if (val instanceof Long || val instanceof Integer)
+ {
+ return Long.toString(val.longValue());
+ }
+ double d = val.doubleValue();
+ if (Double.isInfinite(d))
+ return (d > 0) ? "(1.0 / 0.0)" : "(-1.0 / 0.0)";
+ if (Double.isNaN(d))
+ return "(0.0 / 0.0)";
+ return Double.toString(d);
+ }
+
+ /**
+ * Applies the ValueExp on a MBean.
+ *
+ * @param name The name of the MBean on which the ValueExp will be applied.
+ *
+ * @return The ValueExp.
+ *
+ * @exception BadStringOperationException
+ * @exception BadBinaryOpValueExpException
+ * @exception BadAttributeValueExpException
+ * @exception InvalidApplicationException
+ */
+ public ValueExp apply(ObjectName name)
+ throws BadStringOperationException, BadBinaryOpValueExpException,
+ BadAttributeValueExpException, InvalidApplicationException {
+ return this;
+ }
+
+ /**
+ * Deserializes a {@link NumericValueExp} from an {@link ObjectInputStream}.
+ */
+ private void readObject(ObjectInputStream in)
+ throws IOException, ClassNotFoundException {
+ if (compat)
+ {
+ // Read an object serialized in the old serial form
+ //
+ double doubleVal;
+ long longVal;
+ boolean isLong;
+ ObjectInputStream.GetField fields = in.readFields();
+ doubleVal = fields.get("doubleVal", (double)0);
+ if (fields.defaulted("doubleVal"))
+ {
+ throw new NullPointerException("doubleVal");
+ }
+ longVal = fields.get("longVal", (long)0);
+ if (fields.defaulted("longVal"))
+ {
+ throw new NullPointerException("longVal");
+ }
+ isLong = fields.get("valIsLong", false);
+ if (fields.defaulted("valIsLong"))
+ {
+ throw new NullPointerException("valIsLong");
+ }
+ if (isLong)
+ {
+ this.val = longVal;
+ }
+ else
+ {
+ this.val = doubleVal;
+ }
+ }
+ else
+ {
+ // Read an object serialized in the new serial form
+ //
+ in.defaultReadObject();
+ }
+ }
+
+
+ /**
+ * Serializes a {@link NumericValueExp} to an {@link ObjectOutputStream}.
+ */
+ private void writeObject(ObjectOutputStream out)
+ throws IOException {
+ if (compat)
+ {
+ // Serializes this instance in the old serial form
+ //
+ ObjectOutputStream.PutField fields = out.putFields();
+ fields.put("doubleVal", doubleValue());
+ fields.put("longVal", longValue());
+ fields.put("valIsLong", isLong());
+ out.writeFields();
+ }
+ else
+ {
+ // Serializes this instance in the new serial form
+ //
+ out.defaultWriteObject();
+ }
+ }
+
+ @Deprecated
+ public void setMBeanServer(MBeanServer s) {
+ super.setMBeanServer(s);
+ }
+
+ }