Package db

Class LongField

java.lang.Object

db.Field

db.LongField

All Implemented Interfaces:

java.lang.Comparable<Field>

public final class LongField
extends Field

LongField provides a wrapper for 8-byte signed long data which is read or written to a Record.

Nested Class Summary

Nested classes/interfaces inherited from class db.Field

Field.UnsupportedFieldException

Field Summary

Fields

Modifier and Type	Field	Description
static LongField	INSTANCE	Instance intended for defining a Table Schema
static LongField	MAX_VALUE	Maximum long field value
static LongField	MIN_VALUE	Minimum long field value
static LongField	ZERO_VALUE	Zero long field value

Fields inherited from class db.Field

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor	Description
LongField()	Construct a long field with an initial value of 0.
LongField(long l)	Construct a long field with an initial value of l.

Method Summary

Modifier and Type	Method	Description
int	compareTo(Field o)
LongField	copyField()	Create new instance of this field with the same value.
boolean	equals(java.lang.Object obj)
byte[]	getBinaryData()	Get data as a byte array.
long	getLongValue()	Get field as a long value.
java.lang.String	getValueAsString()	Get field value as a formatted string
int	hashCode()
LongField	newField()	Create new instance of this field type.
void	setBinaryData(byte[] bytes)	Set data from binary byte array.
void	setLongValue(long value)	Set field's long value.
java.lang.String	toString()

Methods inherited from class db.Field

canIndex, getBooleanValue, getByteValue, getIntValue, getShortValue, getString, isSameType, isVariableLength, setBooleanValue, setByteValue, setIntValue, setShortValue, setString

Methods inherited from class java.lang.Object

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

Field Detail

MIN_VALUE

public static final LongField MIN_VALUE

Minimum long field value

MAX_VALUE

public static final LongField MAX_VALUE

Maximum long field value

ZERO_VALUE

public static final LongField ZERO_VALUE

Zero long field value

INSTANCE

public static final LongField INSTANCE

Instance intended for defining a Table Schema

Constructor Detail

LongField

public LongField()

Construct a long field with an initial value of 0.

LongField

public LongField(long l)

Construct a long field with an initial value of l.

Parameters:

l - initial value

Method Detail

getLongValue

public long getLongValue()

Description copied from class: Field

Get field as a long value. All fixed-length field objects must implement this method

Overrides:

getLongValue in class Field

Returns:

long value

setLongValue

public void setLongValue(long value)

Description copied from class: Field

Set field's long value. All fixed-length field objects must implement this method

Overrides:

setLongValue in class Field

Parameters:

value - long value

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getValueAsString

public java.lang.String getValueAsString()

Description copied from class: Field

Get field value as a formatted string

Specified by:

getValueAsString in class Field

Returns:

field value string

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in class Field

compareTo

public int compareTo(Field o)

copyField

public LongField copyField()

Description copied from class: Field

Create new instance of this field with the same value.

Specified by:

copyField in class Field

Returns:

new field instance with same value

newField

public LongField newField()

Description copied from class: Field

Create new instance of this field type.

Specified by:

newField in class Field

Returns:

new field instance with undefined initial value

getBinaryData

public byte[] getBinaryData()

Description copied from class: Field

Get data as a byte array.

Specified by:

getBinaryData in class Field

Returns:

byte[]

setBinaryData

public void setBinaryData(byte[] bytes)

Description copied from class: Field

Set data from binary byte array. All variable-length fields must implement this method.

Specified by:

setBinaryData in class Field

Parameters:

bytes - field data

hashCode

public int hashCode()

Specified by:

hashCode in class Field