com.github.shyiko.mysql.binlog.event.deserialization

Class AbstractRowsEventDataDeserializer<T extends EventData>

java.lang.Object

com.github.shyiko.mysql.binlog.event.deserialization.AbstractRowsEventDataDeserializer<T>

Type Parameters:

T - event data this deserializer is responsible for

All Implemented Interfaces:

EventDataDeserializer<T>

Direct Known Subclasses:

DeleteRowsEventDataDeserializer, UpdateRowsEventDataDeserializer, WriteRowsEventDataDeserializer

public abstract class AbstractRowsEventDataDeserializer<T extends EventData>
extends Object
implements EventDataDeserializer<T>

Whole class is basically a mix of open-replicator's AbstractRowEventParser and MySQLUtils. Main purpose here is to ease rows deserialization.

Current ColumnType to java type mapping is following:

 ColumnType.TINY: Integer
 ColumnType.SHORT: Integer
 ColumnType.LONG: Integer
 ColumnType.INT24: Integer
 ColumnType.YEAR: Integer
 ColumnType.ENUM: Integer
 ColumnType.SET: Long
 ColumnType.LONGLONG: Long
 ColumnType.FLOAT: Float
 ColumnType.DOUBLE: Double
 ColumnType.BIT: java.util.BitSet
 ColumnType.DATETIME: java.util.Date
 ColumnType.DATETIME_V2: java.util.Date
 ColumnType.NEWDECIMAL: java.math.BigDecimal
 ColumnType.TIMESTAMP: java.sql.Timestamp
 ColumnType.TIMESTAMP_V2: java.sql.Timestamp
 ColumnType.DATE: java.sql.Date
 ColumnType.TIME: java.sql.Time
 ColumnType.TIME_V2: java.sql.Time
 ColumnType.VARCHAR: String
 ColumnType.VAR_STRING: String
 ColumnType.STRING: String
 ColumnType.BLOB: byte[]
 ColumnType.GEOMETRY: byte[]
 

At the moment ColumnType.GEOMETRY is unsupported.

Author:

Stanley Shyiko

Constructor Summary

Constructors

Constructor and Description
AbstractRowsEventDataDeserializer(Map<Long,TableMapEventData> tableMapEventByTableId)

Method Summary

Modifier and Type	Method and Description
static BigDecimal	asBigDecimal(int precision, int scale, byte[] value) see mysql/strings/decimal.c
protected Long	asUnixTime(int year, int month, int day, int hour, int minute, int second, int millis)
protected Serializable	deserializeBit(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeBlob(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeCell(ColumnType type, int meta, int length, ByteArrayInputStream inputStream)
protected Serializable	deserializeDate(ByteArrayInputStream inputStream)
protected Serializable	deserializeDatetime(ByteArrayInputStream inputStream)
protected Serializable	deserializeDatetimeV2(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeDouble(ByteArrayInputStream inputStream)
protected Serializable	deserializeEnum(int length, ByteArrayInputStream inputStream)
protected Serializable	deserializeFloat(ByteArrayInputStream inputStream)
protected int	deserializeFractionalSeconds(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeGeometry(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeInt24(ByteArrayInputStream inputStream)
protected byte[]	deserializeJson(int meta, ByteArrayInputStream inputStream) Deserialize the JSON value on the input stream, and return MySQL's internal binary representation of the JSON value.
protected Serializable	deserializeLong(ByteArrayInputStream inputStream)
protected Serializable	deserializeLongLong(ByteArrayInputStream inputStream)
protected Serializable	deserializeNewDecimal(int meta, ByteArrayInputStream inputStream)
protected Serializable[]	deserializeRow(long tableId, BitSet includedColumns, ByteArrayInputStream inputStream)
protected Serializable	deserializeSet(int length, ByteArrayInputStream inputStream)
protected Serializable	deserializeShort(ByteArrayInputStream inputStream)
protected Serializable	deserializeString(int length, ByteArrayInputStream inputStream)
protected Serializable	deserializeTime(ByteArrayInputStream inputStream)
protected Serializable	deserializeTimestamp(ByteArrayInputStream inputStream)
protected Serializable	deserializeTimestampV2(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeTimeV2(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeTiny(ByteArrayInputStream inputStream)
protected Serializable	deserializeVarString(int meta, ByteArrayInputStream inputStream)
protected Serializable	deserializeYear(ByteArrayInputStream inputStream)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.github.shyiko.mysql.binlog.event.deserialization.EventDataDeserializer

deserialize

Constructor Detail

AbstractRowsEventDataDeserializer

public AbstractRowsEventDataDeserializer(Map<Long,TableMapEventData> tableMapEventByTableId)

Method Detail

deserializeRow

protected Serializable[] deserializeRow(long tableId,
                                        BitSet includedColumns,
                                        ByteArrayInputStream inputStream)
                                 throws IOException

Throws:

IOException

deserializeCell

protected Serializable deserializeCell(ColumnType type,
                                       int meta,
                                       int length,
                                       ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeBit

protected Serializable deserializeBit(int meta,
                                      ByteArrayInputStream inputStream)
                               throws IOException

Throws:

IOException

deserializeTiny

protected Serializable deserializeTiny(ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeShort

protected Serializable deserializeShort(ByteArrayInputStream inputStream)
                                 throws IOException

Throws:

IOException

deserializeInt24

protected Serializable deserializeInt24(ByteArrayInputStream inputStream)
                                 throws IOException

Throws:

IOException

deserializeLong

protected Serializable deserializeLong(ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeLongLong

protected Serializable deserializeLongLong(ByteArrayInputStream inputStream)
                                    throws IOException

Throws:

IOException

deserializeFloat

protected Serializable deserializeFloat(ByteArrayInputStream inputStream)
                                 throws IOException

Throws:

IOException

deserializeDouble

protected Serializable deserializeDouble(ByteArrayInputStream inputStream)
                                  throws IOException

Throws:

IOException

deserializeNewDecimal

protected Serializable deserializeNewDecimal(int meta,
                                             ByteArrayInputStream inputStream)
                                      throws IOException

Throws:

IOException

deserializeDate

protected Serializable deserializeDate(ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeTime

protected Serializable deserializeTime(ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeTimeV2

protected Serializable deserializeTimeV2(int meta,
                                         ByteArrayInputStream inputStream)
                                  throws IOException

Throws:

IOException

deserializeTimestamp

protected Serializable deserializeTimestamp(ByteArrayInputStream inputStream)
                                     throws IOException

Throws:

IOException

deserializeTimestampV2

protected Serializable deserializeTimestampV2(int meta,
                                              ByteArrayInputStream inputStream)
                                       throws IOException

Throws:

IOException

deserializeDatetime

protected Serializable deserializeDatetime(ByteArrayInputStream inputStream)
                                    throws IOException

Throws:

IOException

deserializeDatetimeV2

protected Serializable deserializeDatetimeV2(int meta,
                                             ByteArrayInputStream inputStream)
                                      throws IOException

Throws:

IOException

deserializeYear

protected Serializable deserializeYear(ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeString

protected Serializable deserializeString(int length,
                                         ByteArrayInputStream inputStream)
                                  throws IOException

Throws:

IOException

deserializeVarString

protected Serializable deserializeVarString(int meta,
                                            ByteArrayInputStream inputStream)
                                     throws IOException

Throws:

IOException

deserializeBlob

protected Serializable deserializeBlob(int meta,
                                       ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeEnum

protected Serializable deserializeEnum(int length,
                                       ByteArrayInputStream inputStream)
                                throws IOException

Throws:

IOException

deserializeSet

protected Serializable deserializeSet(int length,
                                      ByteArrayInputStream inputStream)
                               throws IOException

Throws:

IOException

deserializeGeometry

protected Serializable deserializeGeometry(int meta,
                                           ByteArrayInputStream inputStream)
                                    throws IOException

Throws:

IOException

deserializeJson

protected byte[] deserializeJson(int meta,
                                 ByteArrayInputStream inputStream)
                          throws IOException

Deserialize the JSON value on the input stream, and return MySQL's internal binary representation of the JSON value. See JsonBinary for a utility to parse this binary representation into something more useful, including a string representation.

Parameters:

meta - the number of bytes in which the length of the JSON value is found first on the input stream

inputStream - the stream containing the JSON value

Returns:

the MySQL internal binary representation of the JSON value; may be null

Throws:

IOException - if there is a problem reading the input stream

asUnixTime

protected Long asUnixTime(int year,
                          int month,
                          int day,
                          int hour,
                          int minute,
                          int second,
                          int millis)

deserializeFractionalSeconds

protected int deserializeFractionalSeconds(int meta,
                                           ByteArrayInputStream inputStream)
                                    throws IOException

Throws:

IOException

asBigDecimal

public static BigDecimal asBigDecimal(int precision,
                                      int scale,
                                      byte[] value)

see mysql/strings/decimal.c