org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator Maven / Gradle / Ivy
package org.codehaus.plexus.component.configurator.expression;
/*
* Copyright 2001-2006 Codehaus Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.File;
/**
* Evaluate an expression.
*
* @author Brett Porter
*/
public interface ExpressionEvaluator
{
String ROLE = ExpressionEvaluator.class.getName();
/**
* Evaluate an expression.
*
* @param expression the expression
* @return the value of the expression
* @throws ExpressionEvaluationException in case of an error.
*/
Object evaluate( String expression )
throws ExpressionEvaluationException;
/**
* Align a given path to the base directory that can be evaluated by this expression evaluator, if known.
*
* @param file the file
* @return the aligned file
*/
File alignToBaseDirectory( File file );
}