org.janusgraph.graphdb.query.graph

Class JointIndexQuery

java.lang.Object

org.janusgraph.graphdb.query.BaseQuery

org.janusgraph.graphdb.query.graph.JointIndexQuery

All Implemented Interfaces:

BackendQuery<JointIndexQuery>, ProfileObservable, Query

public class JointIndexQuery
extends BaseQuery
implements BackendQuery<JointIndexQuery>, ProfileObservable

A component/sub-query of a GraphCentricQuery that gets executed against an indexing backend or the index store by the query processor of the enclosing transaction.

This query itself can contain multiple sub-queries which are individually executed by the IndexSerializer and the result sets merged.

Those sub-queries are either targeting an external indexing backend or the internal index store which is a distinction this query keeps track of through the sub-class JointIndexQuery.Subquery, since their definition and execution differs starkly.

Author:

Matthias Broecheler ([email protected])

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JointIndexQuery.Subquery

Field Summary

Fields inherited from interface org.janusgraph.graphdb.query.Query

NO_LIMIT

Constructor Summary

Constructors

Constructor and Description
JointIndexQuery()

Method Summary

Modifier and Type	Method and Description
void	add(CompositeIndexType index, MultiKeySliceQuery query)
void	add(MixedIndexType index, IndexQuery query)
boolean	equals(Object other)
QueryProfiler	getProfiler()
JointIndexQuery.Subquery	getQuery(int pos)
int	hashCode()
boolean	isEmpty()
void	observeWith(QueryProfiler profiler, boolean hasSiblings)
int	size()
String	toString()
JointIndexQuery	updateLimit(int newLimit) Creates a new query identical to the current one but with the specified limit.

Methods inherited from class org.janusgraph.graphdb.query.BaseQuery

getLimit, hasLimit, setLimit

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.janusgraph.graphdb.query.Query

getLimit, hasLimit

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

observeWith

Constructor Detail

JointIndexQuery

public JointIndexQuery()

Method Detail

add

public void add(MixedIndexType index,
                IndexQuery query)

add

public void add(CompositeIndexType index,
                MultiKeySliceQuery query)

size

public int size()

getQuery

public JointIndexQuery.Subquery getQuery(int pos)

isEmpty

public boolean isEmpty()

observeWith

public void observeWith(QueryProfiler profiler,
                        boolean hasSiblings)

Specified by:

observeWith in interface ProfileObservable

getProfiler

public QueryProfiler getProfiler()

Specified by:

getProfiler in interface ProfileObservable

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

updateLimit

public JointIndexQuery updateLimit(int newLimit)

Description copied from interface: BackendQuery

Creates a new query identical to the current one but with the specified limit.

Specified by:

updateLimit in interface BackendQuery<JointIndexQuery>

Returns: