org.apache.jackrabbit.core.query.lucene.constraint

Interface Constraint

All Known Implementing Classes:

AndConstraint, ChildNodeConstraint, ComparisonConstraint, DescendantNodeConstraint, FullTextConstraint, HierarchyConstraint, LikeConstraint, NotConstraint, OrConstraint, PropertyExistenceConstraint, QueryConstraint, SameNodeConstraint, SelectorBasedConstraint

public interface Constraint

Constraint defines an interface for a QOM constraint.

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(ScoreNode[] row, Name[] selectorNames, EvaluationContext context) Evaluates this constraint for the given row.

Method Detail

evaluate

boolean evaluate(ScoreNode[] row,
                 Name[] selectorNames,
                 EvaluationContext context)
          throws IOException

Evaluates this constraint for the given row.

Parameters:

row - the current row of score nodes.

selectorNames - the selector names associated with row.

context - the evaluation context.

Returns:

true if the row satisfies the constraint, false otherwise.

Throws:

IOException - if an error occurs while evaluating the constraint.