com.datastax.dse.driver.api.core.metadata.schema

Interface DseAggregateMetadata

All Superinterfaces:

AggregateMetadata, Describable

public interface DseAggregateMetadata
extends AggregateMetadata

Specialized aggregate metadata for DSE.

It adds support for the DSE-specific DETERMINISTIC keyword.

Method Summary

Modifier and Type	Method and Description
default String	describe(boolean pretty) Returns a single CQL statement that creates the element.
default Optional<Boolean>	getDeterministic() Indicates if this aggregate is deterministic.
boolean	isDeterministic() Deprecated. Use getDeterministic() instead.

Methods inherited from interface com.datastax.oss.driver.api.core.metadata.schema.AggregateMetadata

describeWithChildren, formatInitCond, getFinalFuncSignature, getInitCond, getKeyspace, getReturnType, getSignature, getStateFuncSignature, getStateType

Method Detail

isDeterministic

@Deprecated
boolean isDeterministic()

Deprecated. Use getDeterministic() instead.

getDeterministic

default Optional<Boolean> getDeterministic()

Indicates if this aggregate is deterministic. A deterministic aggregate means that given a particular input, the aggregate will always produce the same output.

This method returns empty if this information was not found in the system tables, regardless of the actual aggregate characteristics; this is the case for all versions of DSE older than 6.0.0.

Returns:

Whether or not this aggregate is deterministic; or empty if such information is not available in the system tables.

describe

@NonNull
default String describe(boolean pretty)

Description copied from interface: Describable

Returns a single CQL statement that creates the element.

Specified by:

describe in interface AggregateMetadata

Specified by:

describe in interface Describable

Parameters:

pretty - if true, make the output more human-readable (line breaks, indents, and pretty identifiers). If false, return the statement on a single line with minimal formatting.