用于解析的Java库&建立逻辑表达式 [英] Java library for parsing & building logical expressions

问题描述

我正在寻找一个Java开源库，用于解析和构建类似sql的表达式。

I am looking for an open source library in Java for parsing and building sql like expressions.

例如评估表达式的有效性，如：

for example to evaluate validity of expressions like:

 "(a = x or y ) and (b != z)"

此外我想要一个用于构建或扩展表达式的API。
类似于：

in addition I want to have an API for building or extending expressions. something like:

Expression exp = new Expression();
exp.addCondition("a",{"x","y"},Operator.OR);

实现这样的库并不是很复杂，但我们不是用Java开发来享受协作开发？

It's not very complicated to implement such library, but aren't we develop in Java to enjoy collaborative development?

谢谢

推荐答案

我很确定你能拥有< a href =http://www.antlr.org/ =nofollow noreferrer> ANTLR 为您完成此任务。

I'm pretty sure you can have ANTLR do this for you.

语法外观很简单（从这里）：P

The grammatic looks very simple ( from here ) :P

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