com.apple.foundationdb.record.metadata.expressions

Interface KeyExpressionWithChild

All Superinterfaces:

KeyExpression, KeyExpressionWithChildren, PlanHashable

All Known Implementing Classes:

CollateFunctionKeyExpression, CollateFunctionKeyExpressionFactoryJRE.CollateFunctionKeyExpressionJRE, FunctionKeyExpression, GroupingKeyExpression, KeyWithValueExpression, NestingKeyExpression

@API(value=MAINTAINED)
public interface KeyExpressionWithChild
extends KeyExpressionWithChildren

A KeyExpression with exactly one child expression.

Nested Class Summary

Nested classes/interfaces inherited from interface com.apple.foundationdb.record.metadata.expressions.KeyExpression

KeyExpression.DeserializationException, KeyExpression.FanType, KeyExpression.InvalidExpressionException, KeyExpression.InvalidResultException, KeyExpression.NoSuchArgumentException, KeyExpression.SerializationException

Method Summary

Modifier and Type	Method and Description
KeyExpression	getChild()
default List<KeyExpression>	getChildren()

Methods inherited from interface com.apple.foundationdb.record.metadata.expressions.KeyExpression

createsDuplicates, evaluate, evaluateMessage, evaluateSingleton, fromProto, getColumnSize, getSubKey, hasProperInterfaces, hasRecordTypeKey, isPrefixKey, normalizeKeyForPositions, toKeyExpression, toProto, validate, versionColumns

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

combineHashes, iterablePlanHash, objectPlanHash, objectsPlanHash, planHash, planHash, planHash, planHashUnordered, stringHashUnordered

Method Detail

getChild

@Nonnull
KeyExpression getChild()

getChildren

@Nonnull
default List<KeyExpression> getChildren()

Specified by:

getChildren in interface KeyExpressionWithChildren