Package org.apache.druid.query.filter

Class IsBooleanDimFilter

java.lang.Object

org.apache.druid.query.filter.AbstractOptimizableDimFilter

org.apache.druid.query.filter.IsBooleanDimFilter

All Implemented Interfaces:

Cacheable, DimFilter

Direct Known Subclasses:

IsFalseDimFilter, IsTrueDimFilter

public abstract class IsBooleanDimFilter
extends AbstractOptimizableDimFilter

Abstract SQL three-value logic wrapper for some child DimFilter to implement '{filter} IS TRUE' and '{filter} IS FALSE'.

See Also:

- IS TRUE, - IS FALSE, - actual filtering logic

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.druid.query.filter.DimFilter

DimFilter.DimFilterToStringBuilder

Constructor Summary

Constructors

Constructor	Description
IsBooleanDimFilter(DimFilter field, boolean isTrue)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
byte[]	getCacheKey()	Get a byte array used as a cache key.
com.google.common.collect.RangeSet<String>	getDimensionRangeSet(String dimension)	Returns a RangeSet that represents the possible range of the input dimension for this DimFilter.This is applicable to filters that use dimensions such as select, in, bound, and logical filters such as and, or, not.
DimFilter	getField()
Set<String>	getRequiredColumns()
int	hashCode()
Filter	toFilter()	Returns a Filter that implements this DimFilter.
String	toString()

Methods inherited from class org.apache.druid.query.filter.AbstractOptimizableDimFilter

optimize, toOptimizedFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

IsBooleanDimFilter

public IsBooleanDimFilter(DimFilter field,
                          boolean isTrue)

Method Detail

getField

public DimFilter getField()

getCacheKey

public byte[] getCacheKey()

Description copied from interface: Cacheable

Get a byte array used as a cache key.

Returns:

a cache key

toFilter

public Filter toFilter()

Description copied from interface: DimFilter

Returns a Filter that implements this DimFilter. This does not generally involve optimizing the DimFilter, so it does make sense to optimize first and then call toFilter on the resulting DimFilter.

Returns:

a Filter that implements this DimFilter, or null if this DimFilter is a no-op.

getDimensionRangeSet

public com.google.common.collect.RangeSet<String> getDimensionRangeSet(String dimension)

Description copied from interface: DimFilter

Returns a RangeSet that represents the possible range of the input dimension for this DimFilter.This is applicable to filters that use dimensions such as select, in, bound, and logical filters such as and, or, not. Null represents that the range cannot be determined, and will be returned for filters such as javascript and regex where there's no easy way to determine the filtered range. It is treated the same way as an all range in most cases, however there are some subtle difference at logical filters such as not filter, where complement of all is nothing while complement of null is still null.

Parameters:

dimension - name of the dimension to get range for

Returns:

a RangeSet that represent the possible range of the input dimension, or null if it is not possible to determine for this DimFilter.

getRequiredColumns

public Set<String> getRequiredColumns()

Returns:

a HashSet that represents all columns' name which the DimFilter required to do filter.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object