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
public abstract class OperationWithAttributes
extends Operation
implements Attributes

Field Summary

Fields

Modifier and Type	Field and Description
private Map<String,byte[]>	attributes
static String	ID_ATRIBUTE
private int	priority

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OperationWithAttributes() empty construction.
protected	OperationWithAttributes(OperationWithAttributes clone)

Method Summary

Modifier and Type	Method and Description
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.
int	getPriority()
OperationWithAttributes	setAttribute(String name, byte[] value) Sets an attribute.
OperationWithAttributes	setId(String id) This method allows you to set an identifier on an operation.
OperationWithAttributes	setPriority(int priority)

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

attributes

private Map<String,byte[]> attributes

ID_ATRIBUTE

public static final String ID_ATRIBUTE

See Also:

Constant Field Values

priority

private int priority

Constructor Detail

OperationWithAttributes

protected OperationWithAttributes()

empty construction. We need this empty construction to keep binary compatibility.

OperationWithAttributes

protected OperationWithAttributes(OperationWithAttributes clone)

Method Detail

setAttribute

public OperationWithAttributes 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 OperationWithAttributes 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. n * 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

setPriority

public OperationWithAttributes setPriority(int priority)

getPriority

public int getPriority()