org.apache.drill.metastore.expressions

Interface FilterExpression.Visitor<T>

Type Parameters:

T - type into which FilterExpression will be transformed

All Known Implementing Classes:

FilterExpressionVisitor, FilterExpressionVisitor, RdbmsFilterExpressionVisitor

Enclosing interface:

FilterExpression

public static interface FilterExpression.Visitor<T>

Transforms FilterExpression implementations into suitable for Metastore implementation representation. Is handy when needed to traverse through complex filter expressions.

Method Summary

Modifier and Type	Method and Description
T	visit(DoubleExpressionPredicate.And expression)
T	visit(DoubleExpressionPredicate.Or expression)
default T	visit(FilterExpression expression)
T	visit(IsPredicate.IsNotNull expression)
T	visit(IsPredicate.IsNull expression)
T	visit(ListPredicate.In<?> expression)
T	visit(ListPredicate.NotIn<?> expression)
T	visit(SimplePredicate.Equal<?> expression)
T	visit(SimplePredicate.GreaterThan<?> expression)
T	visit(SimplePredicate.GreaterThanOrEqual<?> expression)
T	visit(SimplePredicate.LessThan<?> expression)
T	visit(SimplePredicate.LessThanOrEqual<?> expression)
T	visit(SimplePredicate.NotEqual<?> expression)
T	visit(SingleExpressionPredicate.Not expression)

Method Detail

visit

T visit(SimplePredicate.Equal<?> expression)

visit

T visit(SimplePredicate.NotEqual<?> expression)

visit

T visit(SimplePredicate.LessThan<?> expression)

visit

T visit(SimplePredicate.LessThanOrEqual<?> expression)

visit

T visit(SimplePredicate.GreaterThan<?> expression)

visit

T visit(SimplePredicate.GreaterThanOrEqual<?> expression)

visit

T visit(ListPredicate.In<?> expression)

visit

T visit(ListPredicate.NotIn<?> expression)

visit

T visit(IsPredicate.IsNull expression)

visit

T visit(IsPredicate.IsNotNull expression)

visit

T visit(SingleExpressionPredicate.Not expression)

visit

T visit(DoubleExpressionPredicate.And expression)

visit

T visit(DoubleExpressionPredicate.Or expression)

visit

default T visit(FilterExpression expression)