org.datanucleus.query.evaluator
Class JPQLEvaluator

java.lang.Object
  org.datanucleus.query.evaluator.JavaQueryEvaluator
      org.datanucleus.query.evaluator.JPQLEvaluator

public class JPQLEvaluator
extends JavaQueryEvaluator

Class to evaluate a JPQL query in whole or part.

Field Summary

Fields inherited from class org.datanucleus.query.evaluator.JavaQueryEvaluator

candidateAlias, candidates, clr, compilation, evaluator, language, LOCALISER, parameterValues, query, RESULTS_SET, state

Constructor Summary

JPQLEvaluator(Query query, java.util.Collection candidates, QueryCompilation compilation, java.util.Map parameterValues, ClassLoaderResolver clr)
Constructor.

Method Summary

protected java.util.Collection

evaluateSubquery(Query query, java.util.Collection candidates, QueryCompilation compilation) Method to evaluate a subquery of the query being evaluated.

Methods inherited from class org.datanucleus.query.evaluator.JavaQueryEvaluator

execute

Methods inherited from class java.lang.Object

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

Constructor Detail

JPQLEvaluator

public JPQLEvaluator(Query query,
                     java.util.Collection candidates,
                     QueryCompilation compilation,
                     java.util.Map parameterValues,
                     ClassLoaderResolver clr)

Constructor.

Parameters:

query - The underlying JPQL query

candidates - List of objects as input to the evaluation process

compilation - Compiled query

parameterValues - Input parameter values

clr - ClassLoader resolver

Method Detail

evaluateSubquery

protected java.util.Collection evaluateSubquery(Query query,
                                                java.util.Collection candidates,
                                                QueryCompilation compilation)

Method to evaluate a subquery of the query being evaluated.

Specified by:

evaluateSubquery in class JavaQueryEvaluator

Parameters:

query - The subquery

candidates - The candidates for the subquery

compilation - The subquery compilation

Returns:

The result