Package org.apache.druid.query.policy

Class RowFilterPolicy

java.lang.Object

org.apache.druid.query.policy.RowFilterPolicy

All Implemented Interfaces:

Policy

public class RowFilterPolicy
extends Object
implements Policy

Represents a basic row filter policy restriction.

Method Summary

Modifier and Type	Method	Description
SegmentPruner	createSegmentPruner()
boolean	equals(Object o)
static RowFilterPolicy	from(DimFilter rowFilter)
DimFilter	getRowFilter()
int	hashCode()
String	toString()
CursorBuildSpec	visit(CursorBuildSpec spec)	Apply this policy to a CursorBuildSpec to seamlessly enforce policies for cursor-based queries.

Methods inherited from class java.lang.Object

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

Method Details

from

public static RowFilterPolicy from(@Nonnull
 DimFilter rowFilter)

getRowFilter

public DimFilter getRowFilter()

visit

public CursorBuildSpec visit(CursorBuildSpec spec)

Description copied from interface: Policy

Apply this policy to a CursorBuildSpec to seamlessly enforce policies for cursor-based queries. The application must encapsulate 100% of the requirements of this policy.

Any transforms done to the spec must be sure to update CursorBuildSpec.getPhysicalColumns() and CursorBuildSpec.getVirtualColumns() as needed to ensure the underlying CursorHolder that is being restricted has accurate information about the set of required columns.

Specified by:

visit in interface Policy

createSegmentPruner

@Nullable
public SegmentPruner createSegmentPruner()

Specified by:

createSegmentPruner in interface Policy

Returns:

a SegmentPruner which can be used to skip processing entire segments if it is possible to determine if the policy restricts access.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object