ai.grakn.graql.internal.reasoner.atom

Class Atom

java.lang.Object

ai.grakn.graql.internal.reasoner.atom.AtomBase

ai.grakn.graql.internal.reasoner.atom.Atom

All Implemented Interfaces:

Atomic, Cloneable

Direct Known Subclasses:

Binary

public abstract class Atom
extends AtomBase

Field Summary

Fields

Modifier and Type	Field and Description
protected Type	type
protected String	typeId

Fields inherited from class ai.grakn.graql.internal.reasoner.atom.AtomBase

atomPattern, varName

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Atom(Atom a)
protected	Atom(VarAdmin pattern)
protected	Atom(VarAdmin pattern, Query par)

Method Summary

Modifier and Type	Method and Description
Set<Rule>	getApplicableRules()
abstract Set<Predicate>	getIdPredicates()
abstract Set<Predicate>	getPredicates()
Map<RoleType,javafx.util.Pair<String,Type>>	getRoleVarTypeMap()
Type	getType()
Set<Atom>	getTypeConstraints()
String	getTypeId()
abstract Set<Predicate>	getValuePredicates()
String	getValueVariable()
Map<String,javafx.util.Pair<Type,RoleType>>	getVarTypeRoleMap()
void	inferTypes()
boolean	isAtom()
boolean	isBinary()
boolean	isRecursive()
boolean	isRelation()
boolean	isResource()
protected abstract boolean	isRuleApplicable(InferenceRule child)
boolean	isRuleResolvable()
boolean	isType()
boolean	requiresMaterialisation()
javafx.util.Pair<Atom,Map<String,String>>	rewrite(Atom parent, Query q)

Methods inherited from class ai.grakn.graql.internal.reasoner.atom.AtomBase

clone, containsVar, getParentQuery, getPattern, getSelectedNames, getUnifiers, getVarName, getVarNames, isUserDefinedName, isValueUserDefinedName, setParentQuery, toString, unify, unify

Methods inherited from class java.lang.Object

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

Methods inherited from interface ai.grakn.graql.internal.reasoner.atom.Atomic

equivalenceHashCode, isEquivalent, isPredicate, isSelectable

Field Detail

type

protected Type type

typeId

protected String typeId

Constructor Detail

Atom

protected Atom(VarAdmin pattern)

Atom

protected Atom(VarAdmin pattern,
               Query par)

Atom

protected Atom(Atom a)

Method Detail

isAtom

public boolean isAtom()

isBinary

public boolean isBinary()

isType

public boolean isType()

Returns:

true if the atom corresponds to a atom

isRelation

public boolean isRelation()

Returns:

true if the atom corresponds to a non-unary atom

isResource

public boolean isResource()

Returns:

true if the atom corresponds to a resource atom

isRuleApplicable

protected abstract boolean isRuleApplicable(InferenceRule child)

getApplicableRules

public Set<Rule> getApplicableRules()

isRuleResolvable

public boolean isRuleResolvable()

Returns:

true if the atom can be resolved by a rule (atom exists in one of the rule's head)

isRecursive

public boolean isRecursive()

requiresMaterialisation

public boolean requiresMaterialisation()

getType

public Type getType()

getTypeId

public String getTypeId()

getValueVariable

public String getValueVariable()

getPredicates

public abstract Set<Predicate> getPredicates()

Overrides:

getPredicates in class AtomBase

getIdPredicates

public abstract Set<Predicate> getIdPredicates()

getValuePredicates

public abstract Set<Predicate> getValuePredicates()

getTypeConstraints

public Set<Atom> getTypeConstraints()

getVarTypeRoleMap

public Map<String,javafx.util.Pair<Type,RoleType>> getVarTypeRoleMap()

getRoleVarTypeMap

public Map<RoleType,javafx.util.Pair<String,Type>> getRoleVarTypeMap()

inferTypes

public void inferTypes()

rewrite

public javafx.util.Pair<Atom,Map<String,String>> rewrite(Atom parent,
                                                         Query q)