org.apache.druid.segment.filter

Class ConstantValueMatcherFactory

java.lang.Object

org.apache.druid.segment.filter.ConstantValueMatcherFactory

All Implemented Interfaces:

ColumnProcessorFactory<ValueMatcher>

public class ConstantValueMatcherFactory
extends Object
implements ColumnProcessorFactory<ValueMatcher>

Creates ValueMatcher that match constants.

Method Summary

Modifier and Type	Method and Description
ValueType	defaultType() This default type will be used when the underlying column has an unknown type.
ValueMatcher	makeComplexProcessor(BaseObjectColumnValueSelector<?> selector) Create a processor for a complex column.
ValueMatcher	makeDimensionProcessor(DimensionSelector selector, boolean multiValue) Create a processor for a string column.
ValueMatcher	makeDoubleProcessor(BaseDoubleColumnValueSelector selector) Create a processor for a double column.
ValueMatcher	makeFloatProcessor(BaseFloatColumnValueSelector selector) Create a processor for a float column.
ValueMatcher	makeLongProcessor(BaseLongColumnValueSelector selector) Create a processor for a long column.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

defaultType

public ValueType defaultType()

Description copied from interface: ColumnProcessorFactory

This default type will be used when the underlying column has an unknown type. This allows a column processor factory to specify what type it prefers to deal with (the most 'natural' type for whatever it is doing) when all else is equal.

Specified by:

defaultType in interface ColumnProcessorFactory<ValueMatcher>

makeDimensionProcessor

public ValueMatcher makeDimensionProcessor(DimensionSelector selector,
                                           boolean multiValue)

Description copied from interface: ColumnProcessorFactory

Create a processor for a string column.

Specified by:

makeDimensionProcessor in interface ColumnProcessorFactory<ValueMatcher>

Parameters:

selector - dimension selector

multiValue - whether the selector *might* have multiple values

makeFloatProcessor

public ValueMatcher makeFloatProcessor(BaseFloatColumnValueSelector selector)

Description copied from interface: ColumnProcessorFactory

Create a processor for a float column.

Specified by:

makeFloatProcessor in interface ColumnProcessorFactory<ValueMatcher>

Parameters:

selector - float selector

makeDoubleProcessor

public ValueMatcher makeDoubleProcessor(BaseDoubleColumnValueSelector selector)

Description copied from interface: ColumnProcessorFactory

Create a processor for a double column.

Specified by:

makeDoubleProcessor in interface ColumnProcessorFactory<ValueMatcher>

Parameters:

selector - double selector

makeLongProcessor

public ValueMatcher makeLongProcessor(BaseLongColumnValueSelector selector)

Description copied from interface: ColumnProcessorFactory

Create a processor for a long column.

Specified by:

makeLongProcessor in interface ColumnProcessorFactory<ValueMatcher>

Parameters:

selector - long selector

makeComplexProcessor

public ValueMatcher makeComplexProcessor(BaseObjectColumnValueSelector<?> selector)

Description copied from interface: ColumnProcessorFactory

Create a processor for a complex column.

Specified by:

makeComplexProcessor in interface ColumnProcessorFactory<ValueMatcher>

Parameters:

selector - object selector