com.pervasive.datarush.encoding.binary

Class TokenEncodings

java.lang.Object

com.pervasive.datarush.encoding.binary.TokenEncodings

public final class TokenEncodings
extends Object

A factory for obtaining standard encoders/decoders for token values.

See Also:

TokenEncoder, TokenDecoder

Method Summary

Modifier and Type	Method and Description
TokenDecoder	allocateDecoder(TokenType type, TokenOrder... ordering) Creates a default decoder appropriate for the given type.
TokenEncoder	allocateEncoder(TokenType type, TokenOrder... ordering) Creates a default encoder appropriate for the given type.
TokenDecoder	allocateRecordDecoder(RecordTokenType type, ComparableTokenDecoder[] comparableDecoders, TokenDecoder[] fieldDecoders) Creates a record decoder from a list of field decoders for the fields in the record.
TokenEncoder	allocateRecordEncoder(RecordTokenType type, ComparableTokenEncoder[] comparableEncoders, TokenEncoder[] fieldEncoders) Creates a record encoder from a list of field encoders for the fields in the record.
static TokenEncodings	getDefaultInstance() Returns the default instance of TokenEncodings, configured according to service lookup for the service EncoderFactory.
TokenEncodings	newInstance(EncoderFactory factory) Returns a new instance of TokenEncodings, configured with the encoder factories of this instance, plus the given factory.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getDefaultInstance

public static TokenEncodings getDefaultInstance()

Returns the default instance of TokenEncodings, configured according to service lookup for the service EncoderFactory.

Returns:

the default instance of TokenEncodings

newInstance

public TokenEncodings newInstance(EncoderFactory factory)

Returns a new instance of TokenEncodings, configured with the encoder factories of this instance, plus the given factory. The additional factory will be added at the beginning of the list so as to take precedence over all other factories.

Parameters:

factory - The additional factory.

Returns:

a new instance of TokenEncodings, configured with the given factory.

allocateDecoder

public TokenDecoder allocateDecoder(TokenType type,
                                    TokenOrder... ordering)

Creates a default decoder appropriate for the given type. The resulting decoder can decode encodings made by the default encoder for the type.

Parameters:

type - the type of the data to be decoded

ordering - ordering information

Returns:

a decoder for the type

allocateEncoder

public TokenEncoder allocateEncoder(TokenType type,
                                    TokenOrder... ordering)

Creates a default encoder appropriate for the given type.

Parameters:

type - the type of the data to be decoded

ordering - ordering information

Returns:

a default encoder for the type

allocateRecordDecoder

public TokenDecoder allocateRecordDecoder(RecordTokenType type,
                                          ComparableTokenDecoder[] comparableDecoders,
                                          TokenDecoder[] fieldDecoders)

Creates a record decoder from a list of field decoders for the fields in the record.

Parameters:

type - the record type to decode

comparableDecoders - array of field decoders for ordering key fields in the record.

fieldDecoders - array of field decoders for the non-ordering key fields in the record.

Returns:

the record decoder

allocateRecordEncoder

public TokenEncoder allocateRecordEncoder(RecordTokenType type,
                                          ComparableTokenEncoder[] comparableEncoders,
                                          TokenEncoder[] fieldEncoders)

Creates a record encoder from a list of field encoders for the fields in the record.

Parameters:

type - the record type to encode

comparableEncoders - array of field encoders for ordering key fields in the record.

fieldEncoders - array of field encoders for the non-ordering key fields in the record.

Returns:

the record encoder