CanonicalPlanner (LIMES Core Library 1.7.9 API)

java.lang.Object
- org.aksw.limes.core.execution.planning.planner.Planner
- - org.aksw.limes.core.execution.planning.planner.CanonicalPlanner

All Implemented Interfaces:

IPlanner
```
public class CanonicalPlanner
extends Planner
```
Implements the Canonical planner class. It receives a link specification as input and generates an immutable NestedPlan.

Version:

1.0

Author:

Axel-C. Ngonga Ngomo (ngonga@informatik.uni-leipzig.de), Kleanthi Georgala (georgala@informatik.uni-leipzig.de)

Constructor Summary

Constructors
Constructor Description

CanonicalPlanner()
Constructor of the CanonicalPlanner class.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isStatic()`	Returns the status of the planner.
`LinkSpecification`	`normalize(LinkSpecification spec)`	Normalization of input link specification.
`NestedPlan`	`plan(LinkSpecification spec)`	Generates a NestedPlan for a link specification.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CanonicalPlanner
```
public CanonicalPlanner()
```
    Constructor of the CanonicalPlanner class.
- Method Detail
  - plan
```
public NestedPlan plan(LinkSpecification spec)
```
    Generates a NestedPlan for a link specification. If the link specification is null or empty it returns an empty plan. If the link specification is atomic, the planner generates a simple plan that consists of one RUN instruction. If the link specification is complex, firstly it generates a plan for each of the children specifications and sets them as subPlans. Then, it assigns to the plan the corresponding command based on the link specification operator and finally creates a filtering instruction using the filtering expression and threshold of the input link specification.
    
    Parameters:
    
    spec - Input link specification
    
    Returns:
    
    a NestedPlan of the input link specification
  - isStatic
```
public boolean isStatic()
```
    Returns the status of the planner.
    
    Returns:
    
    true
  - normalize
```
public LinkSpecification normalize(LinkSpecification spec)
```
    Normalization of input link specification.
    
    Parameters:
    
    spec - The input link specification
    
    Returns:
    
    the normalized link specification