org.apache.hadoop.hbase.client
Class OperationWithAttributes

java.lang.Object
  org.apache.hadoop.hbase.client.Operation
      org.apache.hadoop.hbase.client.OperationWithAttributes

All Implemented Interfaces:

Attributes

Direct Known Subclasses:

Mutation, Query

@InterfaceAudience.Public
@InterfaceStability.Evolving
public abstract class OperationWithAttributes
extends Operation
implements Attributes

Field Summary

static String

ID_ATRIBUTE

Constructor Summary

OperationWithAttributes()

Method Summary

byte[]	getAttribute(String name) Gets an attribute
protected long	getAttributeSize()
Map<String,byte[]>	getAttributesMap() Gets all attributes
String	getId() This method allows you to retrieve the identifier for the operation if one was set.
void	setAttribute(String name, byte[] value) Sets an attribute.
void	setId(String id) This method allows you to set an identifier on an operation.

Methods inherited from class org.apache.hadoop.hbase.client.Operation

getFingerprint, toJSON, toJSON, toMap, toMap, toString, toString

Methods inherited from class java.lang.Object

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

Field Detail

ID_ATRIBUTE

public static final String ID_ATRIBUTE

See Also:

Constant Field Values

Constructor Detail

OperationWithAttributes

public OperationWithAttributes()

Method Detail

setAttribute

public void setAttribute(String name,
                         byte[] value)

Description copied from interface: Attributes

Sets an attribute. In case value = null attribute is removed from the attributes map. Attribute names starting with _ indicate system attributes.

Specified by:

setAttribute in interface Attributes

Parameters:

name - attribute name

value - attribute value

getAttribute

public byte[] getAttribute(String name)

Description copied from interface: Attributes

Gets an attribute

Specified by:

getAttribute in interface Attributes

Parameters:

name - attribute name

Returns:

attribute value if attribute is set, null otherwise

getAttributesMap

public Map<String,byte[]> getAttributesMap()

Description copied from interface: Attributes

Gets all attributes

Specified by:

getAttributesMap in interface Attributes

Returns:

unmodifiable map of all attributes

getAttributeSize

protected long getAttributeSize()

setId

public void setId(String id)

This method allows you to set an identifier on an operation. The original motivation for this was to allow the identifier to be used in slow query logging, but this could obviously be useful in other places. One use of this could be to put a class.method identifier in here to see where the slow query is coming from.

Parameters:

id - id to set for the scan

getId

public String getId()

This method allows you to retrieve the identifier for the operation if one was set.

Returns:

the id or null if not set