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

Interface DseAggregateMetadata

All Superinterfaces:

com.datastax.oss.driver.api.core.metadata.schema.AggregateMetadata, com.datastax.oss.driver.api.core.metadata.schema.Describable

public interface DseAggregateMetadata
extends com.datastax.oss.driver.api.core.metadata.schema.AggregateMetadata

Specialized aggregate metadata for the DSE driver.

It adds support for the DSE-specific DETERMINISTIC keyword.

Method Summary

Modifier and Type	Method and Description
default String	describe(boolean pretty)
boolean	isDeterministic() Indicates if this aggregate is deterministic.

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

boolean isDeterministic()

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

NOTE: For versions of DSE older than 6.0.0, this method will always return false, regardless of the actual function characteristics.

Returns:

Whether or not this aggregate is deterministic.

describe

@NonNull
default String describe(boolean pretty)

Specified by:

describe in interface com.datastax.oss.driver.api.core.metadata.schema.AggregateMetadata

Specified by:

describe in interface com.datastax.oss.driver.api.core.metadata.schema.Describable