| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.management; |
| |
| |
| import com.sun.jmx.mbeanserver.GetPropertyAction; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.ObjectStreamField; |
| |
| import java.security.AccessController; |
| |
| /** |
| * This class represents numbers that are arguments to relational constraints. |
| * A NumericValueExp may be used anywhere a ValueExp is required. |
| * |
| * <p>The <b>serialVersionUID</b> of this class is <code>-4679739485102359104L</code>. |
| * |
| * @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 |
| * |
| * <p>The <b>serialVersionUID</b> of this class is <code>-4679739485102359104L</code>. |
| */ |
| 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 <CODE>ValueExp</CODE>. |
| * |
| * @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); |
| } |
| |
| } |