org.janusgraph.graphdb.query.graph

Class MixedIndexAggQueryBuilder

java.lang.Object

org.janusgraph.graphdb.query.graph.MixedIndexAggQueryBuilder

All Implemented Interfaces:

MixedIndexAggQuery, ProfileObservable

public class MixedIndexAggQueryBuilder
extends Object
implements MixedIndexAggQuery

Builds a MixedIndexAggQuery, which contains a single query against a mixed index. It is used to retrieve aggregated result of elements satisfying given conditions.It is used to retrieve.

Author:

Boxuan Li (liboxuan@connect.hku.hk)

Constructor Summary

Constructors

Constructor and Description
MixedIndexAggQueryBuilder(IndexSerializer serializer, BackendTransaction txHandle)

Method Summary

Modifier and Type	Method and Description
MixedIndexAggQueryBuilder	constructIndex(JointIndexQuery indexQuery, ElementCategory resultType)
Number	execute(Aggregation aggregation) Fire an aggregation query against index backend to retrieve aggregated result of satisfying elements
QueryProfiler	getProfiler()
void	observeWith(QueryProfiler parentProfiler, boolean hasSiblings)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.janusgraph.graphdb.query.profile.ProfileObservable

observeWith

Constructor Detail

MixedIndexAggQueryBuilder

public MixedIndexAggQueryBuilder(IndexSerializer serializer,
                                 BackendTransaction txHandle)

Method Detail

constructIndex

public MixedIndexAggQueryBuilder constructIndex(JointIndexQuery indexQuery,
                                                ElementCategory resultType)

execute

public Number execute(Aggregation aggregation)

Description copied from interface: MixedIndexAggQuery

Fire an aggregation query against index backend to retrieve aggregated result of satisfying elements

Specified by:

execute in interface MixedIndexAggQuery

Parameters:

aggregation - aggregation operation to perform on elements that match the query

Returns:

the result of the aggregation operation

observeWith

public void observeWith(QueryProfiler parentProfiler,
                        boolean hasSiblings)

Specified by:

observeWith in interface ProfileObservable

getProfiler

public QueryProfiler getProfiler()

Specified by:

getProfiler in interface ProfileObservable