org.opennms.protocols.snmp

Class SnmpUInt32

java.lang.Object

org.opennms.protocols.snmp.SnmpUInt32

All Implemented Interfaces:

Serializable, Cloneable, SnmpSyntax

Direct Known Subclasses:

SnmpCounter32, SnmpGauge32, SnmpTimeTicks, SnmpV2PartyClock

public class SnmpUInt32
extends Object
implements SnmpSyntax, Cloneable, Serializable

This class defines the 32-bit unsigned SNMP object used to transmit 32-bit unsigned number. The unsigned value is represented by a 64-bit quantity, but the upper 32-bits are always truncated from the value. If a caller passes in a value with any the upper 32-bits set the value will be silently truncated to a 32-bit value. If negative quantities or values with more than 32-bits are passed then data corruption will occur.

Author:

OpenNMS , Brian Weaver

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static byte	ASNTYPE The ASN.1 value for an unsigned integer value.

Constructor Summary

Constructors

Constructor and Description
SnmpUInt32() Default class constructor.
SnmpUInt32(long value) Constructs a SnmpUInt32 object with the specified value.
SnmpUInt32(Long value) Constructs a SnmpUInt32 object with the specified value.
SnmpUInt32(SnmpUInt32 second) Class copy constructor.
SnmpUInt32(String value) Simple class constructor that recovers the unsigned value from the passed string.

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone() Returns a duplicte of the current object
int	decodeASN(byte[] buf, int offset, AsnEncoder encoder) Used to decode the integer value from the ASN.1 buffer.
SnmpSyntax	duplicate() Returns a duplicte of the current object
int	encodeASN(byte[] buf, int offset, AsnEncoder encoder) Used to encode the integer value into an ASN.1 buffer.
boolean	equals(Object obj)
long	getValue() Used to retreive the 32-bit unsigned value.
int	hashCode()
void	setValue(long value) Used to set the 32-bit unsigned quantity.
void	setValue(Long value) Used to set the 32-bit unsigned quantity.
static Long	toLong(SnmpUInt32 val)
String	toString() Returns the string representation of the object.
byte	typeId() Used to retreive the ASN.1 type for this object.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ASNTYPE

public static final byte ASNTYPE

The ASN.1 value for an unsigned integer value. BEWARE this value will conflict with the SnmpSMI.SMI_COUNTER32 value. This object should not be dynamically registered with the SNMP library

See Also:

Constant Field Values

Constructor Detail

SnmpUInt32

public SnmpUInt32()

Default class constructor. Constructs the object with a value of zero(0).

SnmpUInt32

public SnmpUInt32(long value)

Constructs a SnmpUInt32 object with the specified value.

Parameters:

value - The new 32-bit value.

SnmpUInt32

public SnmpUInt32(Long value)

Constructs a SnmpUInt32 object with the specified value.

Parameters:

value - The new 32-bit value.

SnmpUInt32

public SnmpUInt32(SnmpUInt32 second)

Class copy constructor. Constructs a new object with the same value as the passed object.

Parameters:

second - The object to copy the value from.

SnmpUInt32

public SnmpUInt32(String value)

Simple class constructor that recovers the unsigned value from the passed string. If the decoded value evaluates to a negative number or is malformed then an exception is generated. Likewise, the argument must not be a null reference or a null pointer exception is generated by the constructor.

Parameters:

value - The unsigned value encoded as a string.

Throws:

NullPointerException - Thrown if the passed value is a null pointer.

IllegalArgumentException - Thrown if the decoded value evaluates to a negative value.

NumberFormatException - Throws in the passed value cannot be decoded by the constructor.

Method Detail

getValue

public long getValue()

Used to retreive the 32-bit unsigned value.

Returns:

The internal 32-bit value.

setValue

public void setValue(long value)

Used to set the 32-bit unsigned quantity. If the value exceeds 32-bit then the upper 32-bits will be silently truncated from the value.

Parameters:

value - The new value for the object

setValue

public void setValue(Long value)

Used to set the 32-bit unsigned quantity. If the value exceeds 32-bit then the upper 32-bits will be silently truncated from the value.

Parameters:

value - The new value for the object

typeId

public byte typeId()

Used to retreive the ASN.1 type for this object.

Specified by:

typeId in interface SnmpSyntax

Returns:

The ASN.1 value for the SnmpUInt32

encodeASN

public int encodeASN(byte[] buf,
            int offset,
            AsnEncoder encoder)
              throws AsnEncodingException

Used to encode the integer value into an ASN.1 buffer. The passed encoder defines the method for encoding the data.

Specified by:

encodeASN in interface SnmpSyntax

Parameters:

buf - The location to write the encoded data

offset - The start of the encoded buffer.

encoder - The ASN.1 encoder object

Returns:

The byte immediantly after the last encoded byte.

Throws:

AsnEncodingException - Thrown if an encoding error occurs

decodeASN

public int decodeASN(byte[] buf,
            int offset,
            AsnEncoder encoder)
              throws AsnDecodingException

Used to decode the integer value from the ASN.1 buffer. The passed encoder is used to decode the ASN.1 information and the integer value is stored in the internal object.

Specified by:

decodeASN in interface SnmpSyntax

Parameters:

buf - The encoded ASN.1 data

offset - The offset of the first byte of data

encoder - The ASN.1 decoder object.

Returns:

The byte immediantly after the last decoded byte of information.

Throws:

AsnDecodingException - Thrown if an encoding error occurs

duplicate

public SnmpSyntax duplicate()

Returns a duplicte of the current object

Specified by:

duplicate in interface SnmpSyntax

Returns:

A duplciate copy of the current object

clone

public Object clone()

Returns a duplicte of the current object

Overrides:

clone in class Object

Returns:

A duplciate copy of the current object

toString

public String toString()

Returns the string representation of the object.

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toLong

public static Long toLong(SnmpUInt32 val)