Package net.ontopia.topicmaps.query.impl.rdbms

Class RulePredicate

java.lang.Object

net.ontopia.topicmaps.query.impl.basic.AbstractQueryProcessor

net.ontopia.topicmaps.query.impl.basic.RulePredicate

net.ontopia.topicmaps.query.impl.rdbms.RulePredicate

All Implemented Interfaces:

BasicPredicateIF, JDOPredicateIF, PredicateIF

public class RulePredicate
extends RulePredicate
implements JDOPredicateIF

INTERNAL: Implements rule predicates.

Field Summary

Fields inherited from class net.ontopia.topicmaps.query.impl.basic.RulePredicate

rule, signature

Constructor Summary

Constructors

Constructor	Description
RulePredicate(ParsedRule rule)

Method Summary

Modifier and Type	Method	Description
boolean	buildQuery(QueryBuilder builder, List expressions, List arguments)	INTERNAL: Registers JDOExpressionsIF for this predicate with the query builder.
boolean	isRecursive()	INTERNAL:
protected boolean	isRecursive(List clauses, RulePredicate relative_to)
boolean	isSelfRecursive()
void	prescan(QueryBuilder builder, List arguments)	INTERNAL: This method will be called before building the query.

Methods inherited from class net.ontopia.topicmaps.query.impl.basic.RulePredicate

equals, getClauses, getCost, getName, getParameters, getSignature, replaceable, satisfy, translate

Methods inherited from class net.ontopia.topicmaps.query.impl.basic.AbstractQueryProcessor

findClauseItems, findClauseVariables, satisfy

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.ontopia.topicmaps.query.impl.basic.BasicPredicateIF

satisfy

Methods inherited from interface net.ontopia.topicmaps.query.parser.PredicateIF

getCost, getName, getSignature

Constructor Details

RulePredicate

public RulePredicate(ParsedRule rule)

Method Details

isRecursive

public boolean isRecursive()

Description copied from interface: JDOPredicateIF

INTERNAL:

Specified by:

isRecursive in interface JDOPredicateIF

prescan

public void prescan(QueryBuilder builder,
 List arguments)

Description copied from interface: JDOPredicateIF

INTERNAL: This method will be called before building the query. It is used mainly for analyzing the predicate.

Specified by:

prescan in interface JDOPredicateIF

buildQuery

public boolean buildQuery(QueryBuilder builder,
 List expressions,
 List arguments)
                   throws InvalidQueryException

Description copied from interface: JDOPredicateIF

INTERNAL: Registers JDOExpressionsIF for this predicate with the query builder.

Specified by:

buildQuery in interface JDOPredicateIF

Returns:

true if predicate was mapped to JDO expression; false if the predicate could not be mapped to an JDO expression.

Throws:

InvalidQueryException

isSelfRecursive

public boolean isSelfRecursive()

isRecursive

protected boolean isRecursive(List clauses,
 RulePredicate relative_to)