com.bigdata.rdf.sparql.ast.eval

Class ASTSearchOptimizer

java.lang.Object

com.bigdata.rdf.sparql.ast.eval.ASTSearchOptimizerBase

com.bigdata.rdf.sparql.ast.eval.ASTSearchOptimizer

All Implemented Interfaces:

IASTOptimizer

public class ASTSearchOptimizer
extends ASTSearchOptimizerBase

Translate BDS.SEARCH and related magic predicates into a ServiceNode which will invoke the bigdata search engine.

 with {
    select ?subj ?score
    where {
      ?lit bds:search "foo" .
      ?lit bds:relevance ?score .
      ?subj ?p ?lit .
    }
   ORDER BY DESC(?score)
   LIMIT 10
   OFFSET 0 
 } as %searchSet1
 

Version:

$Id$

Author:

Bryan Thompson, Michael Schmidt

Constructor Summary

Constructors

Constructor and Description
ASTSearchOptimizer()

Method Summary

Methods

Modifier and Type	Method and Description
protected String	getNamespace() Get the namespace variables.
protected org.openrdf.model.URI	getSearchPredicate() Get the search predicate variables.
protected Set<org.openrdf.model.URI>	getSearchUris() Get the search URIs fields.

Methods inherited from class com.bigdata.rdf.sparql.ast.eval.ASTSearchOptimizerBase

optimize

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTSearchOptimizer

public ASTSearchOptimizer()

Method Detail

getSearchUris

protected Set<org.openrdf.model.URI> getSearchUris()

Description copied from class: ASTSearchOptimizerBase

Get the search URIs fields.

Specified by:

getSearchUris in class ASTSearchOptimizerBase

getNamespace

protected String getNamespace()

Description copied from class: ASTSearchOptimizerBase

Get the namespace variables.

Specified by:

getNamespace in class ASTSearchOptimizerBase

getSearchPredicate

protected org.openrdf.model.URI getSearchPredicate()

Description copied from class: ASTSearchOptimizerBase

Get the search predicate variables.

Specified by:

getSearchPredicate in class ASTSearchOptimizerBase