com.facebook.presto.common.predicate

Class TupleDomainFilter.NullsFilter

java.lang.Object

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

com.facebook.presto.common.predicate.TupleDomainFilter.NullsFilter

All Implemented Interfaces:

TupleDomainFilter

Enclosing interface:

TupleDomainFilter

public static class TupleDomainFilter.NullsFilter
extends TupleDomainFilter.BasePositionalFilter

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 inherited from class com.facebook.presto.common.predicate.TupleDomainFilter.BasePositionalFilter

filterIndex, offsets

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

ALWAYS_FALSE, IS_NOT_NULL, IS_NULL

Constructor Summary

Constructors

Constructor and Description
NullsFilter()

Method Summary

Modifier and Type	Method and Description
void	setup(boolean[] nullsAllowed, boolean[] nonNullsAllowed, int[] offsets)
boolean	testBoolean(boolean value)
boolean	testBytes(byte[] buffer, int offset, int length)
boolean	testDecimal(long low, long high)
boolean	testDouble(double value)
boolean	testFloat(float value)
boolean	testLength(int length) Filters like string equality and IN, as well as conditions on cardinality of lists and maps can be at least partly decided by looking at lengths alone.
boolean	testLong(long value)
boolean	testNonNull() Used to apply is [not] null filters to complex types, e.g.
boolean	testNull()

Methods inherited from class com.facebook.presto.common.predicate.TupleDomainFilter.BasePositionalFilter

advance, getFailed, getPrecedingPositionsToFail, getSucceedingPositionsToFail, isDeterministic, isPositionalFilter, recordTestResult, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

NullsFilter

public NullsFilter()

Method Detail

setup

public void setup(boolean[] nullsAllowed,
                  boolean[] nonNullsAllowed,
                  int[] offsets)

testNull

public boolean testNull()

testNonNull

public boolean testNonNull()

Description copied from interface: TupleDomainFilter

Used to apply is [not] null filters to complex types, e.g. a[1] is null AND a[3] is not null, where a is an array(array(T)).

In these case, the exact values are not known, but it is known whether they are null or not. Furthermore, for some positions only nulls are allowed (a[1] is null), for others only non-nulls (a[3] is not null), and for the rest both are allowed (a[2] and a[N], where N > 3).

testLong

public boolean testLong(long value)

testDouble

public boolean testDouble(double value)

testFloat

public boolean testFloat(float value)

testDecimal

public boolean testDecimal(long low,
                           long high)

testBoolean

public boolean testBoolean(boolean value)

testBytes

public boolean testBytes(byte[] buffer,
                         int offset,
                         int length)

testLength

public boolean testLength(int length)

Description copied from interface: TupleDomainFilter

Filters like string equality and IN, as well as conditions on cardinality of lists and maps can be at least partly decided by looking at lengths alone. If this is false, then no further checks are needed. If true, eventual filters on the data itself need to be evaluated.