com.whaleal.icefrog.extra.expression.engine.jexl.JexlEngine Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of icefrog-extra Show documentation

icefrog 扩展工具类（提供其它类库的封装）

There is a newer version: 1.1.71

package com.whaleal.icefrog.extra.expression.engine.jexl;

import com.whaleal.icefrog.extra.expression.ExpressionEngine;
import org.apache.commons.jexl3.JexlBuilder;
import org.apache.commons.jexl3.MapContext;

import java.util.Map;

/**
 * Jexl3引擎封装

 * 见：https://github.com/apache/commons-jexl
 *
 * @author looly
 */
public class JexlEngine implements ExpressionEngine {

    private final org.apache.commons.jexl3.JexlEngine engine;

    public JexlEngine() {
        engine = (new JexlBuilder()).cache(512).strict(true).silent(false).create();
    }

    @Override
    public Object eval( String expression, Map context ) {
        final MapContext mapContext = new MapContext(context);

        try {
            return engine.createExpression(expression).evaluate(mapContext);
        } catch (Exception ignore) {
            // https://gitee.com/dromara/hutool/issues/I4B70D
            // 支持脚本
            return engine.createScript(expression).execute(mapContext);
        }
    }

    /**
     * 获取{@link org.apache.commons.jexl3.JexlEngine}
     *
     * @return {@link org.apache.commons.jexl3.JexlEngine}
     */
    public org.apache.commons.jexl3.JexlEngine getEngine() {
        return this.engine;
    }
}