org.openanzo.glitter.expression
Interface FunctionOnTerms

All Superinterfaces:

Function

All Known Implementing Classes:

Bound

public interface FunctionOnTerms
extends Function

Interface for Functions that return false for Function.operatesOnValues(). These functions are supplied with a list of Expressions and the current environment in which those expressions should be considered.

Author:

lee

Method Summary

RDFTerm

call(java.util.List<Expression> arguments, PatternSolution environment) Invokes the function and determines a return value.

Methods inherited from interface org.openanzo.glitter.expression.Function

getIdentifier, operatesOnTypeErrors, operatesOnValues

Method Detail

call

RDFTerm call(java.util.List<Expression> arguments,
             PatternSolution environment)
             throws ExpressionEvaluationException

Invokes the function and determines a return value.

Parameters:

arguments - The (unevaluated) expressions that are passed to the function in the query.

environment - The current solution being evaluated against

Returns:

The result of evaluating this function against the arguments in the given environment

Throws:

ExpressionEvaluationException - For invalid types, or other expression evalutaion problems