net.ontopia.topicmaps.query.impl.utils
Class QueryOptimizer.Reorderer

java.lang.Object
  net.ontopia.topicmaps.query.impl.utils.QueryOptimizer.AbstractQueryOptimizer
      net.ontopia.topicmaps.query.impl.utils.QueryOptimizer.Reorderer

All Implemented Interfaces:

QueryOptimizerIF

Enclosing class:

QueryOptimizer

public static class QueryOptimizer.Reorderer
extends QueryOptimizer.AbstractQueryOptimizer

INTERNAL: Optimizes the query by reordering the clauses into the optimal order for evaluation. See http://www.ontopia.net/topicmaps/materials/tolog.html, under 'Optimizing queries'.

Constructor Summary

QueryOptimizer.Reorderer(boolean predicate_based)

Method Summary

java.util.List

optimize(java.util.List qclauses, QueryContext qcontext)

Methods inherited from class net.ontopia.topicmaps.query.impl.utils.QueryOptimizer.AbstractQueryOptimizer

optimize, optimize

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryOptimizer.Reorderer

public QueryOptimizer.Reorderer(boolean predicate_based)

Method Detail

optimize

public java.util.List optimize(java.util.List qclauses,
                               QueryContext qcontext)

Specified by:

optimize in interface QueryOptimizerIF

Overrides:

optimize in class QueryOptimizer.AbstractQueryOptimizer