org.apache.hadoop.hbase.client

Class Query

java.lang.Object

org.apache.hadoop.hbase.client.Operation

org.apache.hadoop.hbase.client.OperationWithAttributes

org.apache.hadoop.hbase.client.Query

All Implemented Interfaces:

Attributes

Direct Known Subclasses:

Get, Scan

@InterfaceAudience.Public
@InterfaceStability.Evolving
public abstract class Query
extends OperationWithAttributes

Field Summary

Fields

Modifier and Type	Field and Description
protected Filter	filter

Fields inherited from class org.apache.hadoop.hbase.client.OperationWithAttributes

ID_ATRIBUTE

Constructor Summary

Constructors

Constructor and Description
Query()

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getACL()
boolean	getACLStrategy()
Authorizations	getAuthorizations()
Filter	getFilter()
void	setACL(Map<String,Permission> perms)
void	setACL(String user, Permission perms)
void	setACLStrategy(boolean cellFirstStrategy)
void	setAuthorizations(Authorizations authorizations) Sets the authorizations to be used by this Query
Query	setFilter(Filter filter) Apply the specified server-side filter when performing the Query.

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

getAttribute, getAttributeSize, getAttributesMap, getId, setAttribute, setId

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

filter

protected Filter filter

Constructor Detail

Query

public Query()

Method Detail

getFilter

public Filter getFilter()

Returns:

Filter

setFilter

public Query setFilter(Filter filter)

Apply the specified server-side filter when performing the Query. Only Filter.filterKeyValue(Cell) is called AFTER all tests for ttl, column match, deletes and max versions have been run.

Parameters:

filter - filter to run on the server

Returns:

this for invocation chaining

setAuthorizations

public void setAuthorizations(Authorizations authorizations)

Sets the authorizations to be used by this Query

Parameters:

authorizations -

getAuthorizations

public Authorizations getAuthorizations()
                                 throws DeserializationException

Returns:

The authorizations this Query is associated with.

Throws:

DeserializationException

getACL

public byte[] getACL()

Returns:

The serialized ACL for this operation, or null if none

setACL

public void setACL(String user,
          Permission perms)

Parameters:

user - User short name

perms - Permissions for the user

setACL

public void setACL(Map<String,Permission> perms)

Parameters:

perms - A map of permissions for a user or users

getACLStrategy

public boolean getACLStrategy()

Returns:

true if ACLs should be evaluated on the cell level first

setACLStrategy

public void setACLStrategy(boolean cellFirstStrategy)

Parameters:

cellFirstStrategy - true if ACLs should be evaluated on the cell level first, false if ACL should first be checked at the CF and table levels