Package com.illumon.iris.db.tables.dataimport.logtailer

Class TableIdentifierDataItem

java.lang.Object

com.illumon.iris.db.tables.dataimport.logtailer.PayloadDataImportChannelItem

com.illumon.iris.db.tables.dataimport.logtailer.TableIdentifierDataItem

All Implemented Interfaces:

com.fishlib.base.log.LogOutputAppendable, DataImportChannelItem

public class TableIdentifierDataItem
extends PayloadDataImportChannelItem
implements com.fishlib.base.log.LogOutputAppendable

An DataImportChannelItem holding the information necessary to identify a table location. This item is versioned, where no version indicates version 1.

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	BASELINE_VERSION	The version of any data item that isn't given an explicit version.
protected static com.fishlib.io.logger.Logger	log
protected static int	NO_VERSION	The version of data items that predate systematic versioning.
protected int	version
protected static int	VERSION_INDICATOR	This sequence indicates that a version int follows.

Fields inherited from interface com.illumon.iris.db.tables.dataimport.logtailer.DataImportChannelItem

HEADER_SIZE, MAX_DATA_BODY_SIZE, MAX_NON_DATA_BODY_SIZE, VERSION_SIZE

Method Summary

Modifier and Type	Method	Description
com.fishlib.base.log.LogOutput	append(com.fishlib.base.log.LogOutput logOutput)
protected void	checkVersion()	Allow subclasses to allow for future versions.
boolean	equals(Object o)
void	finishRead(ByteBuffer buffer, byte wireDataType)
DataImportChannelType[]	getAlternateTypes()	Get all alternate types that this item can process as input.
int	getCurrentVersion()	Get the latest version supported by this DataImportChannelItem.
Map<String,String>	getMetadata()
DataImportChannelType	getPrimaryType()	Get the item type.
int	getVersion()	Get the version of this DataImportChannelItem.
int	hashCode()
protected void	prepareVersion(ByteBuffer bodyBuffer)	Put the version bytes into the body buffer.
void	read(ByteBuffer buffer, byte wireDataType)	Fill this item's contents from the supplied buffer.
String	toString()

Methods inherited from class com.illumon.iris.db.tables.dataimport.logtailer.PayloadDataImportChannelItem

send

Methods inherited from class java.lang.Object

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

Field Details

log

protected static com.fishlib.io.logger.Logger log

NO_VERSION

protected static final int NO_VERSION

The version of data items that predate systematic versioning.

See Also:

Constant Field Values

BASELINE_VERSION

protected static final int BASELINE_VERSION

The version of any data item that isn't given an explicit version. This should never change.

See Also:

Constant Field Values

VERSION_INDICATOR

protected static final int VERSION_INDICATOR

This sequence indicates that a version int follows. Where this might be expected, its absence indicates the default or baseline version will be assumed. The value should be negative to avoid any chance of confusion with a size.

See Also:

Constant Field Values

version

protected int version

Method Details

toString

public String toString()

Overrides:

toString in class Object

append

public com.fishlib.base.log.LogOutput append(com.fishlib.base.log.LogOutput logOutput)

Specified by:

append in interface com.fishlib.base.log.LogOutputAppendable

getMetadata

public Map<String,String> getMetadata()

finishRead

public void finishRead(@NotNull ByteBuffer buffer, byte wireDataType)

getCurrentVersion

public int getCurrentVersion()

Description copied from interface: DataImportChannelItem

Get the latest version supported by this DataImportChannelItem. This is used by abstract implementations to verify the version read off the wire.

Specified by:

getCurrentVersion in interface DataImportChannelItem

Returns:

the latest version supported by this DataImportChannelItem

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getPrimaryType

public DataImportChannelType getPrimaryType()

Description copied from interface: DataImportChannelItem

Get the item type.

Specified by:

getPrimaryType in interface DataImportChannelItem

Returns:

The item type

getAlternateTypes

public DataImportChannelType[] getAlternateTypes()

Description copied from interface: DataImportChannelItem

Get all alternate types that this item can process as input.

Specified by:

getAlternateTypes in interface DataImportChannelItem

Returns:

The alternate Types

prepareVersion

protected void prepareVersion(@NotNull ByteBuffer bodyBuffer)

Put the version bytes into the body buffer. Does not clear or flip the buffer. This is called only by PayloadDataImportChannelItem on behalf of derived classes.

Parameters:

bodyBuffer - the buffer to populate

checkVersion

protected void checkVersion()

Allow subclasses to allow for future versions. This is relevant for the data items that could be sent out to an older client. A subclass overriding this likely also needs to override finishRead to ensure that extra bytes are consumed (safely).

read

public void read(@NotNull ByteBuffer buffer, byte wireDataType)

Description copied from interface: DataImportChannelItem

Fill this item's contents from the supplied buffer.

Header data as described in DataImportChannelItem.send(IOJob) will already have been consumed.

Specified by:

read in interface DataImportChannelItem

Parameters:

buffer - The buffer to read data from

wireDataType - the data type from the stream.

getVersion

public int getVersion()

Description copied from interface: DataImportChannelItem

Get the version of this DataImportChannelItem.

Specified by:

getVersion in interface DataImportChannelItem

Returns:

the version of the DataImportChannelItem.