ai.grakn.graql.internal.pattern.property

Class LabelProperty

java.lang.Object

ai.grakn.graql.internal.pattern.property.LabelProperty

All Implemented Interfaces:

UniqueVarProperty, VarProperty, VarPropertyInternal

public class LabelProperty
extends Object
implements UniqueVarProperty

Represents the label property on a Type. This property can be queried and inserted. If used in an insert query and there is an existing type with the give label, then that type will be retrieved.

Author:

Felix Chapman

Constructor Summary

Constructors

Constructor and Description
LabelProperty(TypeLabel label)

Method Summary

Modifier and Type	Method and Description
default void	buildString(StringBuilder builder) Build a Graql string representation of this property
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.
boolean	equals(Object o)
java.util.stream.Stream<VarAdmin>	getImplicitInnerVars() Get a stream of any inner VarAdmin within this `VarProperty`, including any that may have been implicitly created (such as with "has").
TypeLabel	getLabelValue()
String	getName()
String	getProperty()
java.util.stream.Stream<VarAdmin>	getTypes() Get a stream of VarAdmin that must be types.
int	hashCode()
void	insert(InsertQueryExecutor insertQueryExecutor, Concept concept) Insert the given property into the graph, if possible.
Atomic	mapToAtom(VarAdmin var, Set<VarAdmin> vars, ReasonerQuery parent) maps this var property to a reasoner atom
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, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

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

checkInsertable, checkValid, delete, getInnerVars, insert, modifyShortcutTraversal

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

getImplicitInnerVars, getTypes, graqlString, isUnique

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

isUnique

Constructor Detail

LabelProperty

public LabelProperty(TypeLabel label)

Method Detail

getLabelValue

public TypeLabel getLabelValue()

getName

public String getName()

getProperty

public String getProperty()

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

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

mapToAtom

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

Description copied from interface: VarProperty

maps this var property to a reasoner atom

Specified by:

mapToAtom in interface VarProperty

Parameters:

var - VarAdmin this property belongs to

vars - VarAdmins constituting the pattern this property belongs to

parent - reasoner query this atom should belong to

Returns:

created atom

buildString

public void buildString(StringBuilder builder)

Description copied from interface: VarProperty

Build a Graql string representation of this property

Specified by:

buildString in interface VarProperty

Parameters:

builder - a string builder to append to

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

getTypes

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

Description copied from interface: VarProperty

Get a stream of VarAdmin that must be types.

Specified by:

getTypes in interface VarProperty

getImplicitInnerVars

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

Description copied from interface: VarProperty

Get a stream of any inner VarAdmin within this `VarProperty`, including any that may have been implicitly created (such as with "has").

Specified by:

getImplicitInnerVars in interface VarProperty