org.openfast.template
Class Scalar

java.lang.Object
  org.openfast.template.Field
      org.openfast.template.Scalar

All Implemented Interfaces:

java.io.Serializable

public class Scalar
extends Field

See Also:

Serialized Form

Field Summary

Fields inherited from class org.openfast.template.Field

id, key, name, optional

Constructor Summary

Scalar(QName name, Type type, OperatorCodec operatorCodec, ScalarValue defaultValue, boolean optional)
Scalar constructor - sets the dictionary as global and validates the entries

Scalar(QName name, Type type, Operator operator, ScalarValue defaultValue, boolean optional)

Scalar(java.lang.String name, Type type, Operator operator, ScalarValue defaultValue, boolean optional)
Scalar constructor - sets the dictionary as global and validates the entries

Method Summary

FieldValue	createValue(java.lang.String value) createValue method declaration
FieldValue	decode(java.io.InputStream in, Group template, Context context, BitVectorReader presenceMapReader) FieldValue decode method declaration
ScalarValue	decode(ScalarValue previousValue)
ScalarValue	decodeValue(ScalarValue newValue, ScalarValue previousValue)
byte[]	encode(FieldValue fieldValue, Group template, Context context, BitVectorBuilder presenceMapBuilder) byte[] encode method declaration
boolean	equals(java.lang.Object other)
ScalarValue	getBaseValue()
ScalarValue	getDefaultValue()
java.lang.String	getDictionary()
Operator	getOperator()
OperatorCodec	getOperatorCodec()
Type	getType()
TypeCodec	getTypeCodec()
java.lang.String	getTypeName() getTypeName method declaration
java.lang.Class	getValueType() getValueType method declaration
int	hashCode()
boolean	isPresenceMapBitSet(byte[] encoding, FieldValue fieldValue) isPresenceMapBitSet method declaration
java.lang.String	serialize(ScalarValue value)
void	setDictionary(java.lang.String dictionary) Sets the dictionary to the passed string
java.lang.String	toString()
boolean	usesPresenceMapBit() usesPresenceMapBit method declaration

Methods inherited from class org.openfast.template.Field

addAttribute, getAttribute, getId, getKey, getName, getQName, hasAttribute, isOptional, isPresent, setId, setKey

Methods inherited from class java.lang.Object

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

Constructor Detail

Scalar

public Scalar(java.lang.String name,
              Type type,
              Operator operator,
              ScalarValue defaultValue,
              boolean optional)

Scalar constructor - sets the dictionary as global and validates the entries

Parameters:

name - The name of Scalar as a string

type - The type of this Scalar

operator - Which operator object is being used

defaultValue - The default value of the ScalarValue

optional - Determines if the Scalar is required or not for the data

Scalar

public Scalar(QName name,
              Type type,
              Operator operator,
              ScalarValue defaultValue,
              boolean optional)

Scalar

public Scalar(QName name,
              Type type,
              OperatorCodec operatorCodec,
              ScalarValue defaultValue,
              boolean optional)

Scalar constructor - sets the dictionary as global and validates the entries

Parameters:

name - The name of Scalar as a string

type - The type of the scalar field

operatorCodec - Which operatorCodec object is being used

defaultValue - The default value of the ScalarValue

optional - Determines if the Scalar is required or not for the data

Method Detail

getType

public Type getType()

Returns:

Returns the type as a string

getOperatorCodec

public OperatorCodec getOperatorCodec()

Returns:

Returns the Operator object

getOperator

public Operator getOperator()

Returns:

Returns the operator name as a string

encode

public byte[] encode(FieldValue fieldValue,
                     Group template,
                     Context context,
                     BitVectorBuilder presenceMapBuilder)

Description copied from class: Field

byte[] encode method declaration

Specified by:

encode in class Field

Parameters:

fieldValue - The Field value

template - The Group object

context - The previous object to keep the data in sync

presenceMapBuilder - The BitVector builder

Returns:

byte encoding of field

Throws:

Throws - RuntimeException if the encoding fails - will print to console the name of the scalar to fail

getDictionary

public java.lang.String getDictionary()

Returns:

Returns the dictionary as a string

decodeValue

public ScalarValue decodeValue(ScalarValue newValue,
                               ScalarValue previousValue)

Parameters:

newValue -

previousValue - the previous value that was decoded

Returns:

the actual value given the previous value and newly decoded value

getDefaultValue

public ScalarValue getDefaultValue()

Returns:

Returns the defaultValue of the current ScalarValue

decode

public ScalarValue decode(ScalarValue previousValue)

Parameters:

previousValue - The previousValue of the ScalarValue

Returns:

Depending on the operator, various ScalarValues could be returned

usesPresenceMapBit

public boolean usesPresenceMapBit()

Description copied from class: Field

usesPresenceMapBit method declaration

Specified by:

usesPresenceMapBit in class Field

Returns:

Returns true

isPresenceMapBitSet

public boolean isPresenceMapBitSet(byte[] encoding,
                                   FieldValue fieldValue)

Description copied from class: Field

isPresenceMapBitSet method declaration

Specified by:

isPresenceMapBitSet in class Field

Parameters:

encoding - The byte array to check if it is present

fieldValue - The fieldValue object

Returns:

Returns true if the byte array has a length

decode

public FieldValue decode(java.io.InputStream in,
                         Group template,
                         Context context,
                         BitVectorReader presenceMapReader)

Description copied from class: Field

FieldValue decode method declaration

Specified by:

decode in class Field

Parameters:

in - The InputStream to be decoded

template - The Group object

context - The previous object to keep the data in sync

presenceMapReader -

Returns:

Returns the null if the Operator is constant and the optional boolean is true and the present boolean is true, otherwise decodes the previousValue and returns the FieldValue object after decoding

setDictionary

public void setDictionary(java.lang.String dictionary)

Sets the dictionary to the passed string

Parameters:

dictionary - The string to be stored as the dictionary

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

Returns the string 'Scalar [name=X, operator=X, dictionary=X]'

getValueType

public java.lang.Class getValueType()

Description copied from class: Field

getValueType method declaration

Specified by:

getValueType in class Field

Returns:

Returns the class of the current ScalarValue

createValue

public FieldValue createValue(java.lang.String value)

Description copied from class: Field

createValue method declaration

Specified by:

createValue in class Field

Parameters:

value - Creates a FieldValue of the passed value

Returns:

Returns the FieldValue object with the passed value

getTypeName

public java.lang.String getTypeName()

Description copied from class: Field

getTypeName method declaration

Specified by:

getTypeName in class Field

Returns:

Returns the string 'scalar'

getBaseValue

public ScalarValue getBaseValue()

Returns:

Returns the initialValue of the current ScalarValue object

getTypeCodec

public TypeCodec getTypeCodec()

Returns:

Returns the type of the Codec

serialize

public java.lang.String serialize(ScalarValue value)

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object