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The SnmpInt.java Java example source code
/*
* Copyright (c) 1997, 2011, 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 com.sun.jmx.snmp;
import com.sun.jmx.snmp.Enumerated;
/**
* Represents an SNMP integer.
*
* <p>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b>
*/
public class SnmpInt extends SnmpValue {
private static final long serialVersionUID = -7163624758070343373L;
// CONSTRUCTORS
//-------------
/**
* Constructs a new <CODE>SnmpInt from the specified integer value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is smaller than <CODE>Integer.MIN_VALUE
* or larger than <CODE>Integer.MAX_VALUE.
*/
public SnmpInt(int v) throws IllegalArgumentException {
if ( isInitValueValid(v) == false ) {
throw new IllegalArgumentException() ;
}
value = (long)v ;
}
/**
* Constructs a new <CODE>SnmpInt from the specified Integer value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is smaller than <CODE>Integer.MIN_VALUE
* or larger than <CODE>Integer.MAX_VALUE.
*/
public SnmpInt(Integer v) throws IllegalArgumentException {
this(v.intValue()) ;
}
/**
* Constructs a new <CODE>SnmpInt from the specified long value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is smaller than <CODE>Integer.MIN_VALUE
* or larger than <CODE>Integer.MAX_VALUE.
*/
public SnmpInt(long v) throws IllegalArgumentException {
if ( isInitValueValid(v) == false ) {
throw new IllegalArgumentException() ;
}
value = v ;
}
/**
* Constructs a new <CODE>SnmpInt from the specified Long value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is smaller than <CODE>Integer.MIN_VALUE
* or larger than <CODE>Integer.MAX_VALUE.
*/
public SnmpInt(Long v) throws IllegalArgumentException {
this(v.longValue()) ;
}
/**
* Constructs a new <CODE>SnmpInt from the specified Enumerated value.
* @param v The initialization value.
* @exception IllegalArgumentException The specified value is smaller than <CODE>Integer.MIN_VALUE
* or larger than <CODE>Integer.MAX_VALUE.
* @see Enumerated
*/
public SnmpInt(Enumerated v) throws IllegalArgumentException {
this(v.intValue()) ;
}
/**
* Constructs a new <CODE>SnmpInt from the specified boolean value.
* This constructor applies rfc1903 rule:
* <p>
* TruthValue ::= TEXTUAL-CONVENTION
* STATUS current
* DESCRIPTION
* "Represents a boolean value."
* SYNTAX INTEGER { true(1), false(2) }
* </pre>
* @param v The initialization value.
*/
public SnmpInt(boolean v) {
value = v ? 1 : 2 ;
}
// PUBLIC METHODS
//---------------
/**
* Returns the long value of this <CODE>SnmpInt.
* @return The value.
*/
public long longValue() {
return value ;
}
/**
* Converts the integer value to its <CODE>Long form.
* @return The <CODE>Long representation of the value.
*/
public Long toLong() {
return new Long(value) ;
}
/**
* Converts the integer value to its integer form.
* @return The integer representation of the value.
*/
public int intValue() {
return (int) value ;
}
/**
* Converts the integer value to its <CODE>Integer form.
* @return The <CODE>Integer representation of the value.
*/
public Integer toInteger() {
return new Integer((int)value) ;
}
/**
* Converts the integer value to its <CODE>String form.
* @return The <CODE>String representation of the value.
*/
public String toString() {
return String.valueOf(value) ;
}
/**
* Converts the integer value to its <CODE>SnmpOid form.
* @return The OID representation of the value.
*/
public SnmpOid toOid() {
return new SnmpOid(value) ;
}
/**
* Extracts the integer from an index OID and returns its
* value converted as an <CODE>SnmpOid.
* @param index The index array.
* @param start The position in the index array.
* @return The OID representing the integer value.
* @exception SnmpStatusException There is no integer 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 integer 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 integer 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 representing an SnmpInt to another OID.
* @param source An OID representing an <CODE>SnmpInt 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 interface.
* @return The <CODE>SnmpValue clone.
*/
final synchronized public SnmpValue duplicate() {
return (SnmpValue) clone() ;
}
/**
* Clones the <CODE>SnmpInt object, making a copy of its data.
* @return The object clone.
*/
final synchronized public Object clone() {
SnmpInt newclone = null ;
try {
newclone = (SnmpInt) super.clone() ;
newclone.value = value ;
} catch (CloneNotSupportedException e) {
throw new InternalError(e) ; // vm bug.
}
return newclone ;
}
/**
* Returns a textual description of the type object.
* @return ASN.1 textual description.
*/
public String getTypeName() {
return name ;
}
/**
* This method has been defined to allow the sub-classes
* of SnmpInt to perform their own control at intialization time.
*/
boolean isInitValueValid(int v) {
if ((v < Integer.MIN_VALUE) || (v > Integer.MAX_VALUE)) {
return false;
}
return true;
}
/**
* This method has been defined to allow the sub-classes
* of SnmpInt to perform their own control at intialization time.
*/
boolean isInitValueValid(long v) {
if ((v < Integer.MIN_VALUE) || (v > Integer.MAX_VALUE)) {
return false;
}
return true;
}
// VARIABLES
//----------
/**
* Name of the type.
*/
final static String name = "Integer32" ;
/**
* This is where the value is stored. This long is signed.
* @serial
*/
protected long value = 0 ;
}
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