Class Optimizer

An Optimizer applies a set of optimization rules, implemented using subclasses of PlanVisitor.

author: Thomas Minier

Hierarchy

Optimizer

Index

Constructors

constructor

Properties

_visitors

Methods

Constructors

constructor

new Optimizer(): Optimizer

- Defined in src/optimizer/optimizer.ts:36
Returns Optimizer

Properties

Private _visitors

_visitors: PlanVisitor[]

Methods

addVisitor

addVisitor(visitor: PlanVisitor): void

- Defined in src/optimizer/optimizer.ts:56
Register a new visitor, which implements an optimization rule.

Parameters
- visitor: PlanVisitor
  
  Visitor
Returns void

optimize

optimize(plan: PlanNode): PlanNode

- Defined in src/optimizer/optimizer.ts:65
Optimize a SPARQL query expression tree, by applying the set of rules.

Parameters
- plan: PlanNode
  
  SPARQL query expression tree to iptimize
Returns PlanNode

Optimized SPARQL query expression tree

Static getDefault

getDefault(): Optimizer

- Defined in src/optimizer/optimizer.ts:46
Get an optimizer configured with the default optimization rules

Returns Optimizer

A new Optimizer pre-configured with default rules

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