001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *  http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.geronimo.system.configuration.condition;
021    
022    /**
023     * Provides a simple facility to evaluate condition expressions.
024     *
025     * @version $Rev: 454011 $ $Date: 2006-10-07 13:28:45 -0700 (Sat, 07 Oct 2006) $
026     */
027    public interface ConditionParser
028    {
029        /**
030         * Evaluate a condition expression.
031         *
032         * @param expression    The condition expression to evaluate; must not be null
033         * @return              True if the condition is satisfied
034         *
035         * @throws ConditionParserException     Failed to evaluate condition expression
036         */
037        boolean evaluate(String expression) throws ConditionParserException;
038    }