Module org.apache.jena.arq
Class ReorderFixed
java.lang.Object
org.apache.jena.sparql.engine.optimizer.reorder.ReorderTransformationSubstitution
org.apache.jena.sparql.engine.optimizer.reorder.ReorderFixed
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ReorderTransformation
Fixed scheme for choosing based on the triple patterns, without
looking at the data. It gives a weight to a triple, with more grounded terms
being considered better. It weights against rdf:type because that can be
very unselective (e.g. ?x rdf:type rdf:Resource)
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
The number of triples used for the base scaleFields inherited from class org.apache.jena.sparql.engine.optimizer.reorder.ReorderTransformationSubstitution
log
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Constructor Summary
Constructors -
Method Summary
Methods inherited from class org.apache.jena.sparql.engine.optimizer.reorder.ReorderTransformationSubstitution
reorder, reorderIndexes
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Field Details
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MultiTermSampleSize
public static final int MultiTermSampleSizeThe number of triples used for the base scale- See Also:
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Constructor Details
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ReorderFixed
public ReorderFixed()
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Method Details
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weight
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