ai.grakn.graql.internal.gremlin.fragment

Class AbstractRolePlayerFragment

java.lang.Object

ai.grakn.graql.internal.gremlin.fragment.Fragment

ai.grakn.graql.internal.gremlin.fragment.AbstractRolePlayerFragment

public abstract class AbstractRolePlayerFragment
extends Fragment

Abstract class for the fragments that traverse Schema.EdgeLabel#ROLE_PLAYER edges: InRolePlayerFragment and OutRolePlayerFragment.

Author:

Felix Chapman

Property Summary

Properties inherited from class ai.grakn.graql.internal.gremlin.fragment.Fragment

varProperty

Constructor Summary

Constructors

Constructor and Description
AbstractRolePlayerFragment()

Method Summary

Modifier and Type	Method and Description
Set<Weighted<DirectedEdge<Node>>>	directedEdges(Map<NodeId,Node> nodes, Map<Node,Map<Node,Fragment>> edges) Convert the fragment to a set of weighted edges for query planning
abstract Var	end()

Methods inherited from class ai.grakn.graql.internal.gremlin.fragment.Fragment

applyTraversal, canOperateOnEdges, dependencies, fragmentCost, hasFixedFragmentCost, isStartingFragment, name, start, toString, varProperty, vars

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRolePlayerFragment

public AbstractRolePlayerFragment()

Method Detail

end

public abstract Var end()

Overrides:

end in class Fragment

Returns:

the variable name that this fragment ends at in the query, if this query has an end variable

directedEdges

public final Set<Weighted<DirectedEdge<Node>>> directedEdges(Map<NodeId,Node> nodes,
                                                             Map<Node,Map<Node,Fragment>> edges)

Description copied from class: Fragment

Convert the fragment to a set of weighted edges for query planning

Overrides:

directedEdges in class Fragment

Parameters:

nodes - all nodes in the query

edges - a mapping from edge(child, parent) to its corresponding fragment

Returns:

a set of edges