com.apple.foundationdb.record.query.plan.temp.explain

Class AbstractPlannerGraph<N extends AbstractPlannerGraph.AbstractNode,E extends AbstractPlannerGraph.AbstractEdge>

java.lang.Object

com.apple.foundationdb.record.query.plan.temp.explain.AbstractPlannerGraph<N,E>

Type Parameters:

N - node type

E - edge type

Direct Known Subclasses:

PlannerGraph

public class AbstractPlannerGraph<N extends AbstractPlannerGraph.AbstractNode,E extends AbstractPlannerGraph.AbstractEdge>
extends Object

The planner graph class. Objects of this class are computed by PlannerGraphProperty, i.e., they get computed by walking a RelationalExpression DAG. Once computed, the property is immutable.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractPlannerGraph.AbstractEdge Edge class.
static class	AbstractPlannerGraph.AbstractNode Node class functioning as parent for any nodes in the network.
static class	AbstractPlannerGraph.PlannerGraphBuilder<N extends AbstractPlannerGraph.AbstractNode,E extends AbstractPlannerGraph.AbstractEdge,B extends AbstractPlannerGraph<N,E>> Builder class for planner graph.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractPlannerGraph(N root, com.google.common.graph.Network<N,E> network) Protected constructor.

Method Summary

Modifier and Type	Method and Description
com.google.common.graph.ImmutableNetwork<N,E>	getNetwork()
N	getRoot()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPlannerGraph

protected AbstractPlannerGraph(N root,
                               com.google.common.graph.Network<N,E> network)

Protected constructor. Objects of this class are built by a builder.

Parameters:

root - root of this graph

network - a network describing the query execution plan rooted at root

Method Detail

getRoot

@Nonnull
public N getRoot()

getNetwork

@Nonnull
public com.google.common.graph.ImmutableNetwork<N,E> getNetwork()