ai.grakn.graql.internal.pattern.property

Class PlaysProperty

java.lang.Object

ai.grakn.graql.internal.pattern.property.PlaysProperty

All Implemented Interfaces:

VarProperty, VarPropertyInternal

public class PlaysProperty
extends Object

Represents the plays property on an Instance. This property relates an Instance and a RoleType. It indicates that an Instance must be a role-player in a Relation where it plays the role of the RoleType.

Author:

Felix Chapman

Constructor Summary

Constructors

Constructor and Description
PlaysProperty(VarAdmin role)

Method Summary

Modifier and Type	Method and Description
default void	buildString(StringBuilder builder)
void	checkValid(GraknGraph graph, VarAdmin var) Check if the given property can be used in a match query
void	delete(GraknGraph graph, Concept concept) Delete the given property from the graph, if possible.
java.util.stream.Stream<VarAdmin>	getImplicitInnerVars()
java.util.stream.Stream<VarAdmin>	getInnerVars()
String	getName()
String	getProperty()
VarAdmin	getRole()
java.util.stream.Stream<VarAdmin>	getTypes()
void	insert(InsertQueryExecutor insertQueryExecutor, Concept concept) Insert the given property into the graph, if possible.
Atomic	mapToAtom(VarAdmin var, Set<VarAdmin> vars, ReasonerQuery parent)
Collection<EquivalentFragmentSet>	match(VarName start) Return a collection of EquivalentFragmentSet to match the given property in the graph

Methods inherited from class java.lang.Object

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

Methods inherited from interface ai.grakn.graql.internal.pattern.property.VarPropertyInternal

checkInsertable, checkValid, delete, insert, modifyShortcutTraversal

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

getImplicitInnerVars, graqlString, isUnique

Constructor Detail

PlaysProperty

public PlaysProperty(VarAdmin role)

Method Detail

getRole

public VarAdmin getRole()

getName

public String getName()

getProperty

public String getProperty()

getTypes

public java.util.stream.Stream<VarAdmin> getTypes()

Specified by:

getTypes in interface VarProperty

getInnerVars

public java.util.stream.Stream<VarAdmin> getInnerVars()

Specified by:

getInnerVars in interface VarProperty

Specified by:

getInnerVars in interface VarPropertyInternal

match

public Collection<EquivalentFragmentSet> match(VarName start)

Description copied from interface: VarPropertyInternal

Return a collection of EquivalentFragmentSet to match the given property in the graph

Specified by:

match in interface VarPropertyInternal

mapToAtom

public Atomic mapToAtom(VarAdmin var,
                        Set<VarAdmin> vars,
                        ReasonerQuery parent)

Specified by:

mapToAtom in interface VarProperty

buildString

public void buildString(StringBuilder builder)

Specified by:

buildString in interface VarProperty

checkValid

public final void checkValid(GraknGraph graph,
                             VarAdmin var)
                      throws IllegalStateException

Description copied from interface: VarPropertyInternal

Check if the given property can be used in a match query

Specified by:

checkValid in interface VarPropertyInternal

Throws:

IllegalStateException

insert

public void insert(InsertQueryExecutor insertQueryExecutor,
                   Concept concept)
            throws IllegalStateException

Description copied from interface: VarPropertyInternal

Insert the given property into the graph, if possible.

Specified by:

insert in interface VarPropertyInternal

Parameters:

insertQueryExecutor - the instance handling the insert query

concept - the concept to insert a property on

Throws:

IllegalStateException

delete

public void delete(GraknGraph graph,
                   Concept concept)

Description copied from interface: VarPropertyInternal

Delete the given property from the graph, if possible.

Specified by:

delete in interface VarPropertyInternal

Parameters:

graph - the graph to operate on

concept - the concept to delete properties of

getImplicitInnerVars

public java.util.stream.Stream<VarAdmin> getImplicitInnerVars()

Specified by:

getImplicitInnerVars in interface VarProperty