org.apache.druid.segment.filter

Class RegexFilter

java.lang.Object

org.apache.druid.segment.filter.DimensionPredicateFilter

org.apache.druid.segment.filter.RegexFilter

All Implemented Interfaces:

Filter

public class RegexFilter
extends DimensionPredicateFilter

Field Summary

Fields inherited from class org.apache.druid.segment.filter.DimensionPredicateFilter

basePredicateString, dimension, extractionFn, filterTuning, predicateFactory

Constructor Summary

Constructors

Constructor and Description
RegexFilter(String dimension, Pattern pattern, ExtractionFn extractionFn, FilterTuning filterTuning)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
Filter	rewriteRequiredColumns(Map<String,String> columnRewrites) Return a copy of this filter that is identical to the this filter except that it operates on different columns, based on a renaming map where the key is the column to be renamed in the filter, and the value is the new column name.
boolean	supportsRequiredColumnRewrite() Returns true is this filter is able to return a copy of this filter that is identical to this filter except that it operates on different columns, based on a renaming map.
String	toString()

Methods inherited from class org.apache.druid.segment.filter.DimensionPredicateFilter

canVectorizeMatcher, estimateSelectivity, getBitmapResult, getRequiredColumns, makeMatcher, makeVectorMatcher, shouldUseBitmapIndex, supportsBitmapIndex, supportsSelectivityEstimation

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.query.filter.Filter

getBitmapIndex

Constructor Detail

RegexFilter

public RegexFilter(String dimension,
                   Pattern pattern,
                   ExtractionFn extractionFn,
                   FilterTuning filterTuning)

Method Detail

toString

public String toString()

Overrides:

toString in class DimensionPredicateFilter

supportsRequiredColumnRewrite

public boolean supportsRequiredColumnRewrite()

Description copied from interface: Filter

Returns true is this filter is able to return a copy of this filter that is identical to this filter except that it operates on different columns, based on a renaming map.

rewriteRequiredColumns

public Filter rewriteRequiredColumns(Map<String,String> columnRewrites)

Description copied from interface: Filter

Return a copy of this filter that is identical to the this filter except that it operates on different columns, based on a renaming map where the key is the column to be renamed in the filter, and the value is the new column name. For example, if I have a filter (A = hello), and I have a renaming map (A -> B), this should return the filter (B = hello)

Parameters:

columnRewrites - Column rewrite map

Returns:

Copy of this filter that operates on new columns based on the rewrite map

equals

public boolean equals(Object o)

Overrides:

equals in class DimensionPredicateFilter

hashCode

public int hashCode()

Overrides:

hashCode in class DimensionPredicateFilter