ai.grakn.graql.internal.query.match

Class MatchQueryBase

java.lang.Object

ai.grakn.graql.internal.query.match.MatchQueryBase

All Implemented Interfaces:

MatchQueryAdmin, MatchQueryInternal, MatchQuery, Query<List<Map<String,Concept>>>, Streamable<Map<String,Concept>>, Iterable<Map<String,Concept>>

public class MatchQueryBase
extends Object
implements MatchQueryInternal

Base MatchQuery implementation that executes the gremlin traversal

Constructor Summary

Constructors

Constructor and Description
MatchQueryBase(Conjunction<PatternAdmin> pattern)

Method Summary

Modifier and Type	Method and Description
Optional<GraknGraph>	getGraph()
Conjunction<PatternAdmin>	getPattern()
com.google.common.collect.ImmutableSet<String>	getSelectedNames()
Set<Type>	getTypes()
Set<Type>	getTypes(GraknGraph graph)
MatchQuery	infer(boolean materialise)
java.util.stream.Stream<Map<String,Concept>>	stream(Optional<GraknGraph> optionalGraph) Execute the query using the given graph.
String	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.internal.query.match.MatchQueryInternal

aggregate, ask, colorKeyword, colorType, delete, delete, distinct, get, insert, isReadOnly, limit, offset, orderBy, resultsString, select, stream, withGraph

Methods inherited from interface ai.grakn.graql.admin.MatchQueryAdmin

admin

Methods inherited from interface ai.grakn.graql.MatchQuery

delete, execute, insert, orderBy, select

Methods inherited from interface ai.grakn.graql.Streamable

iterator, parallelStream

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

MatchQueryBase

public MatchQueryBase(Conjunction<PatternAdmin> pattern)

Parameters:

pattern - a pattern to match in the graph

Method Detail

stream

public java.util.stream.Stream<Map<String,Concept>> stream(Optional<GraknGraph> optionalGraph)

Description copied from interface: MatchQueryInternal

Execute the query using the given graph.

Specified by:

stream in interface MatchQueryInternal

Parameters:

optionalGraph - the graph to use to execute the query

Returns:

a stream of results

getTypes

public Set<Type> getTypes(GraknGraph graph)

Specified by:

getTypes in interface MatchQueryAdmin

Parameters:

graph - the graph to use to get types from

Returns:

all concept types referred to explicitly in the query

getTypes

public Set<Type> getTypes()

Specified by:

getTypes in interface MatchQueryAdmin

Returns:

all concept types referred to explicitly in the query

getSelectedNames

public com.google.common.collect.ImmutableSet<String> getSelectedNames()

Specified by:

getSelectedNames in interface MatchQueryAdmin

Returns:

all selected variable names in the query

getPattern

public Conjunction<PatternAdmin> getPattern()

Specified by:

getPattern in interface MatchQueryAdmin

Returns:

the pattern to match in the graph

getGraph

public Optional<GraknGraph> getGraph()

Specified by:

getGraph in interface MatchQueryAdmin

Returns:

the graph the query operates on, if one was provided

toString

public String toString()

Overrides:

toString in class Object

infer

public final MatchQuery infer(boolean materialise)