com.allanbank.mongodb.bson.element

Class ObjectId

java.lang.Object

com.allanbank.mongodb.bson.element.ObjectId

All Implemented Interfaces:

Serializable

public class ObjectId
extends Object
implements Serializable

An Object Id.

See Also:

Serialized Form

API Notice:

This class is part of the driver's API. Public and protected members will be deprecated for at least 1 non-bugfix release (version numbers are <major>.<minor>.<bugfix>) before being removed or modified.

Copyright ©:

2011-2012, Allanbank Consulting, Inc., All Rights Reserved

Field Summary

Fields

Modifier and Type	Field and Description
static long	MACHINE_ID The current process's machine id.

Constructor Summary

Constructors

Constructor and Description
ObjectId() Constructs a new ObjectId.
ObjectId(int timestamp, long machineId) Constructs a new ObjectId.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object object) Determines if the passed object is of this same type as this object and if so that its fields are equal.
long	getMachineId() The lower 8 bytes of the object id.
int	getTimestamp() The upper 4 bytes of the object id.
int	hashCode() Computes a reasonable hash code.
String	toString() String form of the object.

Methods inherited from class java.lang.Object

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

Field Detail

MACHINE_ID

public static final long MACHINE_ID

The current process's machine id.

Constructor Detail

ObjectId

public ObjectId()

Constructs a new ObjectId.

ObjectId

public ObjectId(int timestamp,
        long machineId)

Constructs a new ObjectId.

Parameters:

timestamp - The BSON Object Id timestamp.

machineId - The BSON Object Id machine id.

Method Detail

equals

public boolean equals(Object object)

Determines if the passed object is of this same type as this object and if so that its fields are equal.

Overrides:

equals in class Object

Parameters:

object - The object to compare to.

See Also:

Object.equals(java.lang.Object)

getMachineId

public long getMachineId()

The lower 8 bytes of the object id.

Returns:

The lower 8 bytes of the object id.

getTimestamp

public int getTimestamp()

The upper 4 bytes of the object id.

Returns:

The upper 4 bytes of the object id.

hashCode

public int hashCode()

Computes a reasonable hash code.

Overrides:

hashCode in class Object

Returns:

The hash code value.

toString

public String toString()

String form of the object.

Overrides:

toString in class Object

Returns:

A human readable form of the object.

See Also:

Object.toString()