/*
* Copyright (c) 1997, 2007, 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
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*/
package com.sun.jmx.snmp;
/**
* Represents an SNMP 64bits counter.
*
* <p><b>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b></p>
*/
public class SnmpCounter64 extends SnmpValue {
private static final long serialVersionUID = 8784850650494679937L;
// CONSTRUCTORS
//-------------
/**
* Constructs a new <CODE>SnmpCounter64</CODE> from the specified long value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is negative
* or larger than <CODE>Long.MAX_VALUE</CODE>.
*/
public SnmpCounter64(long v) throws IllegalArgumentException {
// NOTE:
// The max value for a counter64 variable is 2^64 - 1.
// The max value for a Long is 2^63 - 1.
// All the allowed values for a conuter64 variable cannot be covered !!!
//
if ((v < 0) || (v > Long.MAX_VALUE)) {
throw new IllegalArgumentException() ;
}
value = v ;
}
/**
* Constructs a new <CODE>SnmpCounter64</CODE> from the specified <CODE>Long</CODE> value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is negative
* or larger than <CODE>Long.MAX_VALUE</CODE>.
*/
public SnmpCounter64(Long v) throws IllegalArgumentException {
this(v.longValue()) ;
}
// PUBLIC METHODS
//---------------
/**
* Returns the counter value of this <CODE>SnmpCounter64</CODE>.
* @return The value.
*/
public long longValue() {
return value ;
}
/**
* Converts the counter value to its <CODE>Long</CODE> form.
* @return The <CODE>Long</CODE> representation of the value.
*/
public Long toLong() {
return new Long(value) ;
}
/**
* Converts the counter value to its integer form.
* @return The integer representation of the value.
*/
public int intValue() {
return (int)value ;
}
/**
* Converts the counter value to its <CODE>Integer</CODE> form.
* @return The <CODE>Integer</CODE> representation of the value.
*/
public Integer toInteger() {
return new Integer((int)value) ;
}
/**
* Converts the counter value to its <CODE>String</CODE> form.
* @return The <CODE>String</CODE> representation of the value.
*/
public String toString() {
return String.valueOf(value) ;
}
/**
* Converts the counter value to its <CODE>SnmpOid</CODE> form.
* @return The OID representation of the value.
*/
public SnmpOid toOid() {
return new SnmpOid(value) ;
}
/**
* Extracts the counter from an index OID and returns its
* value converted as an <CODE>SnmpOid</CODE>.
* @param index The index array.
* @param start The position in the index array.
* @return The OID representing the counter value.
* @exception SnmpStatusException There is no counter value
* available at the start position.
*/
public static SnmpOid toOid(long[] index, int start) throws SnmpStatusException {
try {
return new SnmpOid(index[start]) ;
}
catch(IndexOutOfBoundsException e) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
}
/**
* Scans an index OID, skips the counter value and returns the position
* of the next value.
* @param index The index array.
* @param start The position in the index array.
* @return The position of the next value.
* @exception SnmpStatusException There is no counter value
* available at the start position.
*/
public static int nextOid(long[] index, int start) throws SnmpStatusException {
if (start >= index.length) {
throw new SnmpStatusException(SnmpStatusException.noSuchName) ;
}
else {
return start + 1 ;
}
}
/**
* Appends an <CODE>SnmpOid</CODE> representing an <CODE>SnmpCounter64</CODE> to another OID.
* @param source An OID representing an <CODE>SnmpCounter64</CODE> value.
* @param dest Where source should be appended.
*/
public static void appendToOid(SnmpOid source, SnmpOid dest) {
if (source.getLength() != 1) {
throw new IllegalArgumentException() ;
}
dest.append(source) ;
}
/**
* Performs a clone action. This provides a workaround for the
* <CODE>SnmpValue</CODE> interface.
* @return The SnmpValue clone.
*/
final synchronized public SnmpValue duplicate() {
return (SnmpValue)clone() ;
}
/**
* Clones the <CODE>SnmpCounter64</CODE> object, making a copy of its data.
* @return The object clone.
*/
final synchronized public Object clone() {
SnmpCounter64 newclone = null ;
try {
newclone = (SnmpCounter64) super.clone() ;
newclone.value = value ;
} catch (CloneNotSupportedException e) {
throw new InternalError() ; // vm bug.
}
return newclone ;
}
/**
* Returns a textual description of the type object.
* @return ASN.1 textual description.
*/
final public String getTypeName() {
return name ;
}
// VARIABLES
//----------
/**
* Name of the type.
*/
final static String name = "Counter64" ;
/**
* This is where the value is stored. This long is positive.
* @serial
*/
private long value = 0 ;
}