Package com.apple.foundationdb.record.query.predicates

Class OrPredicate

java.lang.Object

com.apple.foundationdb.record.query.predicates.AndOrPredicate

com.apple.foundationdb.record.query.predicates.OrPredicate

All Implemented Interfaces:

PlanHashable, Bindable, Correlated<QueryPredicate>, QueryPredicate

@API(EXPERIMENTAL)
public class OrPredicate
extends AndOrPredicate

A QueryPredicate that is satisfied when any of its child components is satisfied. For tri-valued logic:

• If any child is true, then true.
• If all children are false, then false.
• Else null.

Nested Class Summary

Nested classes/interfaces inherited from interface com.apple.foundationdb.record.query.plan.temp.Correlated

Correlated.BoundEquivalence

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

PlanHashable.PlanHashKind

Constructor Summary

Constructors

Constructor	Description
OrPredicate(List<QueryPredicate> operands)

Method Summary

Modifier and Type	Method	Description
<M extends Message> Boolean	eval(FDBRecordStoreBase<M> store, EvaluationContext context, FDBRecord<M> record, M message)
static QueryPredicate	or(Collection<QueryPredicate> children)
int	planHash(PlanHashable.PlanHashKind hashKind)	Return a hash similar to hashCode, but with the additional guarantee that is is stable across JVMs.
OrPredicate	rebaseWithRebasedChildren(AliasMap translationMap, List<QueryPredicate> rebasedChildren)
String	toString()

Methods inherited from class com.apple.foundationdb.record.query.predicates.AndOrPredicate

bindTo, equals, equalsWithoutChildren, getChildren, getCorrelatedTo, hashCode, rebase, semanticEquals, semanticHashCode

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

Methods inherited from interface com.apple.foundationdb.record.query.predicates.QueryPredicate

findImpliedMappings, impliesCandidatePredicate, isTautology

Constructor Detail

OrPredicate

public OrPredicate(@Nonnull
                   List<QueryPredicate> operands)

Method Detail

eval

@Nullable
public <M extends Message> Boolean eval(@Nonnull
                                        FDBRecordStoreBase<M> store,
                                        @Nonnull
                                        EvaluationContext context,
                                        @Nullable
                                        FDBRecord<M> record,
                                        @Nullable
                                        M message)

toString

public String toString()

Overrides:

toString 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.

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

rebaseWithRebasedChildren

public OrPredicate rebaseWithRebasedChildren(AliasMap translationMap,
                                             List<QueryPredicate> rebasedChildren)

Specified by:

rebaseWithRebasedChildren in class AndOrPredicate

or

public static QueryPredicate or(@Nonnull
                                Collection<QueryPredicate> children)