com.metamatrix.query.sql.visitor
Class NeedsEvaluationVisitor

java.lang.Object
  com.metamatrix.query.sql.LanguageVisitor
      com.metamatrix.query.sql.visitor.NeedsEvaluationVisitor

public class NeedsEvaluationVisitor
extends LanguageVisitor

Checks the language object for expressions or criteria that need to be evaluated at execution time

Constructor Summary

NeedsEvaluationVisitor()

Method Summary

static boolean	needsEvaluation(LanguageObject obj)
void	setNeedsEvaluation()
void	visit(DependentSetCriteria obj)
void	visit(Function obj)
void	visit(Reference obj)

Methods inherited from class com.metamatrix.query.sql.LanguageVisitor

setAbort, shouldAbort, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

NeedsEvaluationVisitor

public NeedsEvaluationVisitor()

Method Detail

visit

public void visit(Reference obj)

Overrides:

visit in class LanguageVisitor

See Also:

LanguageVisitor.visit(com.metamatrix.query.sql.symbol.Reference)

visit

public void visit(DependentSetCriteria obj)

Overrides:

visit in class LanguageVisitor

See Also:

LanguageVisitor.visit(com.metamatrix.query.sql.lang.DependentSetCriteria)

visit

public void visit(Function obj)

Overrides:

visit in class LanguageVisitor

See Also:

LanguageVisitor.visit(com.metamatrix.query.sql.symbol.Function)

setNeedsEvaluation

public void setNeedsEvaluation()

needsEvaluation

public static boolean needsEvaluation(LanguageObject obj)