org.codehaus.plexus.component.configurator.expression

Interface ExpressionEvaluator

All Known Subinterfaces:

TypeAwareExpressionEvaluator

All Known Implementing Classes:

DefaultExpressionEvaluator

public interface ExpressionEvaluator

Evaluate an expression.

Version:

$Id: ExpressionEvaluator.java 4779 2006-11-23 04:09:31Z jvanzyl $

Author:

Brett Porter

Field Summary

Fields

Modifier and Type	Field and Description
static String	ROLE

Method Summary

Methods

Modifier and Type	Method and Description
File	alignToBaseDirectory(File file) Align a given path to the base directory that can be evaluated by this expression evaluator, if known.
Object	evaluate(String expression) Evaluate an expression.

Field Detail

ROLE

static final String ROLE

Method Detail

evaluate

Object evaluate(String expression)
                throws ExpressionEvaluationException

Evaluate an expression.

Parameters:

expression - the expression

Returns:

the value of the expression

Throws:

ExpressionEvaluationException

alignToBaseDirectory

File alignToBaseDirectory(File file)

Align a given path to the base directory that can be evaluated by this expression evaluator, if known.

Parameters:

file - the file

Returns:

the aligned file