ai.grakn.graql.internal.query.analytics

Class MeanQueryImpl

java.lang.Object

ai.grakn.graql.internal.query.analytics.AbstractComputeQuery<T>

ai.grakn.graql.internal.query.analytics.MeanQueryImpl

All Implemented Interfaces:

MeanQuery, ComputeQuery<Optional<Double>>, Query<Optional<Double>>

public class MeanQueryImpl
extends AbstractComputeQuery<T>
implements MeanQuery

Field Summary

Fields inherited from class ai.grakn.graql.internal.query.analytics.AbstractComputeQuery

connectedComponent, degree

Constructor Summary

Constructors

Constructor and Description
MeanQueryImpl(Optional<GraknGraph> graph)

Method Summary

Modifier and Type	Method and Description
Optional<Double>	execute() Execute the query.
MeanQuery	in(Collection<String> subTypeNames)
MeanQuery	in(String... subTypeNames)
boolean	isReadOnly() Whether this query will modify the graph
MeanQuery	of(Collection<String> resourceTypeNames)
MeanQuery	of(String... resourceTypeNames)
MeanQuery	withGraph(GraknGraph graph)

Methods inherited from class ai.grakn.graql.internal.query.analytics.AbstractComputeQuery

resultsString, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface ai.grakn.graql.Query

isReadOnly, resultsString

Constructor Detail

MeanQueryImpl

public MeanQueryImpl(Optional<GraknGraph> graph)

Method Detail

execute

public Optional<Double> execute()

Description copied from interface: MeanQuery

Execute the query.

Specified by:

execute in interface MeanQuery

Specified by:

execute in interface Query<Optional<Double>>

Returns:

the mean value if the given resource types have instances, otherwise an empty Optional instance

of

public MeanQuery of(String... resourceTypeNames)

Specified by:

of in interface MeanQuery

Parameters:

resourceTypeNames - an array of types of resources to execute the query on

Returns:

a MeanQuery with the subTypeNames set

of

public MeanQuery of(Collection<String> resourceTypeNames)

Specified by:

of in interface MeanQuery

Parameters:

resourceTypeNames - a collection of types of resources to execute the query on

Returns:

a MeanQuery with the subTypeNames set

in

public MeanQuery in(String... subTypeNames)

Specified by:

in in interface MeanQuery

Specified by:

in in interface ComputeQuery<Optional<Double>>

Overrides:

in in class AbstractComputeQuery<Optional<Double>>

Parameters:

subTypeNames - an array of types to include in the subgraph

Returns:

a ComputeQuery with the subTypeNames set

in

public MeanQuery in(Collection<String> subTypeNames)

Specified by:

in in interface MeanQuery

Specified by:

in in interface ComputeQuery<Optional<Double>>

Overrides:

in in class AbstractComputeQuery<Optional<Double>>

Parameters:

subTypeNames - a collection of types to include in the subgraph

Returns:

a ComputeQuery with the subTypeNames set

withGraph

public MeanQuery withGraph(GraknGraph graph)

Specified by:

withGraph in interface MeanQuery

Specified by:

withGraph in interface ComputeQuery<Optional<Double>>

Specified by:

withGraph in interface Query<Optional<Double>>

Overrides:

withGraph in class AbstractComputeQuery<Optional<Double>>

Parameters:

graph - the graph to execute the compute query on

Returns:

a ComputeQuery with the graph set

isReadOnly

public boolean isReadOnly()

Description copied from interface: Query

Whether this query will modify the graph