Package com.apple.foundationdb.record.query.plan

Class ScanComparisons

java.lang.Object

com.apple.foundationdb.record.query.plan.ScanComparisons

All Implemented Interfaces:

PlanHashable

Direct Known Subclasses:

ScanComparisons.Builder

@API(INTERNAL)
public class ScanComparisons
extends Object
implements PlanHashable

A set of Comparisons.Comparison for scanning an index. A prefix of zero or more equality comparisons for each of the corresponding indexed fields, followed by zero or more inequality comparisons to be applied to the next field.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ScanComparisons.Builder	A builder for ScanComparisons.
static class	ScanComparisons.ComparisonType	The type of a comparison.

Nested classes/interfaces inherited from interface com.apple.foundationdb.record.PlanHashable

PlanHashable.PlanHashKind

Field Summary

Fields

Modifier and Type	Field	Description
static ScanComparisons	EMPTY
protected List<Comparisons.Comparison>	equalityComparisons
protected Set<Comparisons.Comparison>	inequalityComparisons

Constructor Summary

Constructors

Constructor	Description
ScanComparisons(List<Comparisons.Comparison> equalityComparisons, Set<Comparisons.Comparison> inequalityComparisons)

Method Summary

Modifier and Type	Method	Description
protected static void	addComparandToList(List<Object> items, Comparisons.Comparison comparison, FDBRecordStoreBase<?> store, EvaluationContext context)
ScanComparisons	append(ScanComparisons other)
boolean	equals(Object o)
static ScanComparisons	from(Comparisons.Comparison comparison)
static ScanComparisons.ComparisonType	getComparisonType(Comparisons.Comparison comparison)
List<Comparisons.Comparison>	getEqualityComparisons()
int	getEqualitySize()
Set<Comparisons.Comparison>	getInequalityComparisons()
int	hashCode()
boolean	isEmpty()
boolean	isEquality()
ScanComparisons	merge(ScanComparisons other)
int	planHash(PlanHashable.PlanHashKind hashKind)	Return a hash similar to hashCode, but with the additional guarantee that is is stable across JVMs.
int	size()
String	toString()
int	totalSize()
static Object	toTupleItem(Object item)
TupleRange	toTupleRange()
TupleRange	toTupleRange(FDBRecordStoreBase<?> store, EvaluationContext context)
TupleRange	toTupleRangeWithoutContext()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.apple.foundationdb.record.PlanHashable

planHash

Field Detail

equalityComparisons

@Nonnull
protected final List<Comparisons.Comparison> equalityComparisons

inequalityComparisons

@Nonnull
protected final Set<Comparisons.Comparison> inequalityComparisons

EMPTY

public static final ScanComparisons EMPTY

Constructor Detail

ScanComparisons

public ScanComparisons(@Nonnull
                       List<Comparisons.Comparison> equalityComparisons,
                       @Nonnull
                       Set<Comparisons.Comparison> inequalityComparisons)

Method Detail

getEqualityComparisons

@Nonnull
public List<Comparisons.Comparison> getEqualityComparisons()

getInequalityComparisons

@Nonnull
public Set<Comparisons.Comparison> getInequalityComparisons()

getEqualitySize

public int getEqualitySize()

size

public int size()

totalSize

public int totalSize()

isEmpty

public boolean isEmpty()

isEquality

public boolean isEquality()

getComparisonType

@Nonnull
public static ScanComparisons.ComparisonType getComparisonType(@Nonnull
                                                               Comparisons.Comparison comparison)

from

@Nullable
public static ScanComparisons from(@Nonnull
                                   Comparisons.Comparison comparison)

merge

@Nullable
public ScanComparisons merge(@Nonnull
                             ScanComparisons other)

append

@Nullable
public ScanComparisons append(@Nonnull
                              ScanComparisons other)

toTupleRange

@Nonnull
public TupleRange toTupleRange()

toTupleRange

@Nonnull
public TupleRange toTupleRange(@Nullable
                               FDBRecordStoreBase<?> store,
                               @Nullable
                               EvaluationContext context)

toTupleRangeWithoutContext

@Nullable
public TupleRange toTupleRangeWithoutContext()

addComparandToList

protected static void addComparandToList(@Nonnull
                                         List<Object> items,
                                         @Nonnull
                                         Comparisons.Comparison comparison,
                                         @Nullable
                                         FDBRecordStoreBase<?> store,
                                         @Nullable
                                         EvaluationContext context)

toTupleItem

public static Object toTupleItem(@Nullable
                                 Object item)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

planHash

public int planHash(@Nonnull
                    PlanHashable.PlanHashKind hashKind)

Description copied from interface: PlanHashable

Return a hash similar to hashCode, but with the additional guarantee that is is stable across JVMs.

Specified by:

planHash in interface PlanHashable

Parameters:

hashKind - the "kind" of hash to calculate. Each kind of hash has a particular logic with regards to included and excluded items.

Returns:

a stable hash code

toString

public String toString()

Overrides:

toString in class Object