001/*
002 *    Copyright 2024-2025, Warm-Flow (290631660@qq.com).
003 *
004 *    Licensed under the Apache License, Version 2.0 (the "License");
005 *    you may not use this file except in compliance with the License.
006 *    You may obtain a copy of the License at
007 *
008 *       https://www.apache.org/licenses/LICENSE-2.0
009 *
010 *    Unless required by applicable law or agreed to in writing, software
011 *    distributed under the License is distributed on an "AS IS" BASIS,
012 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *    See the License for the specific language governing permissions and
014 *    limitations under the License.
015 */
016package org.dromara.warm.flow.core.expression;
017
018import org.dromara.warm.flow.core.constant.ExceptionCons;
019import org.dromara.warm.flow.core.constant.FlowCons;
020import org.dromara.warm.flow.core.utils.AssertUtil;
021
022import java.util.Map;
023
024/**
025 * 条件表达式抽象类，复用部分代码
026 *
027 * @author warm
028 */
029public abstract class ExpressionStrategyAbstract implements ExpressionStrategy {
030
031    @Override
032    public boolean eval(String expression, Map<String, Object> variable) {
033        String[] split = expression.split(FlowCons.splitAt);
034        preEval(split, variable);
035        String variableValue = String.valueOf(variable.get(split[0].trim()));
036        return afterEval(split, variableValue);
037    }
038
039    public void preEval(String[] split, Map<String, Object> variable) {
040        AssertUtil.isEmpty(variable, ExceptionCons.NULL_CONDITIONVALUE);
041        Object o = variable.get(split[0].trim());
042        AssertUtil.isNull(o, ExceptionCons.NULL_CONDITIONVALUE);
043    }
044
045    public abstract boolean afterEval(String[] split, String value);
046
047}