com.facebook.presto.common.predicate

Class TupleDomainFilter.BasePositionalFilter

java.lang.Object

com.facebook.presto.common.predicate.TupleDomainFilter.BasePositionalFilter

All Implemented Interfaces:

TupleDomainFilter

Direct Known Subclasses:

TupleDomainFilter.NullsFilter, TupleDomainFilter.PositionalFilter

Enclosing interface:

TupleDomainFilter

public abstract static class TupleDomainFilter.BasePositionalFilter
extends Object
implements TupleDomainFilter

Nested Class Summary

Nested classes/interfaces inherited from interface com.facebook.presto.common.predicate.TupleDomainFilter

TupleDomainFilter.AbstractRange, TupleDomainFilter.AbstractTupleDomainFilter, TupleDomainFilter.AlwaysFalse, TupleDomainFilter.BasePositionalFilter, TupleDomainFilter.BigintMultiRange, TupleDomainFilter.BigintRange, TupleDomainFilter.BigintValuesUsingBitmask, TupleDomainFilter.BigintValuesUsingHashTable, TupleDomainFilter.BooleanValue, TupleDomainFilter.BytesRange, TupleDomainFilter.BytesValues, TupleDomainFilter.BytesValuesExclusive, TupleDomainFilter.DoubleRange, TupleDomainFilter.FloatRange, TupleDomainFilter.IsNotNull, TupleDomainFilter.IsNull, TupleDomainFilter.LongDecimalRange, TupleDomainFilter.MultiRange, TupleDomainFilter.NullsFilter, TupleDomainFilter.PositionalFilter

Field Summary

Fields

Modifier and Type	Field and Description
protected int	filterIndex
protected int[]	offsets

Fields inherited from interface com.facebook.presto.common.predicate.TupleDomainFilter

ALWAYS_FALSE, IS_NOT_NULL, IS_NULL

Constructor Summary

Constructors

Constructor and Description
BasePositionalFilter()

Method Summary

Modifier and Type	Method and Description
protected void	advance()
boolean[]	getFailed()
int	getPrecedingPositionsToFail() When a filter applied to a nested column fails, the whole top-level position should fail.
int	getSucceedingPositionsToFail()
boolean	isDeterministic() A filter becomes non-deterministic when applies to nested column, e.g.
boolean	isPositionalFilter()
protected boolean	recordTestResult(boolean result)
protected void	reset()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.presto.common.predicate.TupleDomainFilter

testBoolean, testBytes, testDecimal, testDouble, testFloat, testLength, testLong, testNonNull, testNull

Field Detail

filterIndex

protected int filterIndex

offsets

protected int[] offsets

Constructor Detail

BasePositionalFilter

public BasePositionalFilter()

Method Detail

isDeterministic

public boolean isDeterministic()

Description copied from interface: TupleDomainFilter

A filter becomes non-deterministic when applies to nested column, e.g. a[1] > 10 is non-deterministic because > 10 filter applies only to some positions, e.g. first entry in a set of entries that correspond to a single top-level position.

Specified by:

isDeterministic in interface TupleDomainFilter

getFailed

public boolean[] getFailed()

getPrecedingPositionsToFail

public int getPrecedingPositionsToFail()

Description copied from interface: TupleDomainFilter

When a filter applied to a nested column fails, the whole top-level position should fail. To enable this functionality, the filter keeps track of the boundaries of top-level positions and allows the caller to find out where the current top-level position started and how far it continues.

Specified by:

getPrecedingPositionsToFail in interface TupleDomainFilter

Returns:

number of positions from the start of the current top-level position up to the current position (excluding current position)

getSucceedingPositionsToFail

public int getSucceedingPositionsToFail()

Specified by:

getSucceedingPositionsToFail in interface TupleDomainFilter

Returns:

number of positions remaining until the end of the current top-level position

isPositionalFilter

public boolean isPositionalFilter()

Specified by:

isPositionalFilter in interface TupleDomainFilter

Returns:

true if getPrecedingPositionsToFail or getSucceedingPositionsToFail may return non-zero values

reset

protected void reset()

advance

protected void advance()

recordTestResult

protected boolean recordTestResult(boolean result)