Package db

Class StringField

java.lang.Object

db.Field

db.StringField

All Implemented Interfaces:

java.lang.Comparable<Field>

public class StringField
extends Field

StringField provides a wrapper for variable length String data which is read or written to a Record. Strings are always encoded as UTF-8.

Constructor Summary

Constructors

Constructor	Description
StringField()	Construct a String field with an initial value of null.
StringField(java.lang.String s)	Construct a String field with an initial value of s.

Method Summary

Modifier and Type	Method	Description
int	compareTo(Field o)
boolean	equals(java.lang.Object obj)
byte[]	getBinaryData()	Get data as a byte array.
protected byte	getFieldType()	Return Field instance type as an integer value
java.lang.String	getString()	Get field as a String value.
java.lang.String	getValueAsString()
int	hashCode()
boolean	isVariableLength()
Field	newField()	Create new instance of this field type.
Field	newField(Field fieldValue)	Create new instance of this field type.
void	setBinaryData(byte[] bytes)	Set data from binary byte array.
void	setString(java.lang.String str)	Set field's String value.
java.lang.String	toString()

Methods inherited from class db.Field

getBooleanValue, getByteValue, getIntValue, getLongValue, getShortValue, setBooleanValue, setByteValue, setIntValue, setLongValue, setShortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

StringField

public StringField()

Construct a String field with an initial value of null.

StringField

public StringField(java.lang.String s)

Construct a String field with an initial value of s.

Parameters:

s - initial value

Method Detail

getString

public java.lang.String getString()

Description copied from class: Field

Get field as a String value.

Overrides:

getString in class Field

Returns:

String value

setString

public void setString(java.lang.String str)

Description copied from class: Field

Set field's String value.

Overrides:

setString in class Field

Parameters:

str - String value

isVariableLength

public boolean isVariableLength()

Overrides:

isVariableLength in class Field

Returns:

true if a Field instance is variable length, else false.

getFieldType

protected byte getFieldType()

Description copied from class: Field

Return Field instance type as an integer value

Specified by:

getFieldType in class Field

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getValueAsString

public java.lang.String getValueAsString()

Specified by:

getValueAsString in class Field

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in class Field

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.

Overrides:

setBinaryData in class Field

Parameters:

bytes - field data

compareTo

public int compareTo(Field o)

newField

public Field newField(Field fieldValue)

Description copied from class: Field

Create new instance of this field type.

Specified by:

newField in class Field

Parameters:

fieldValue - initial field value.

Returns:

long

newField

public Field newField()

Description copied from class: Field

Create new instance of this field type.

Specified by:

newField in class Field

Returns:

long

hashCode

public int hashCode()

Specified by:

hashCode in class Field