[英]Java library for parsing & building logical expressions
I am looking for an open source library in Java for parsing and building SQL-like expressions.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。
for example to evaluate validity of expressions like:例如评估表达式的有效性,如:
"(a = x or y ) and (b != z)"
in addition I want to have an API for building or extending expressions.此外,我想要一个用于构建或扩展表达式的 API。 something like:就像是:
Expression exp = new Expression();
exp.addCondition("a",{"x","y"},Operator.OR);
It's not very complicated to implement such a library, but aren't we develop in Java to enjoy collaborative development?实现这样一个库并不是很复杂,但是我们用Java开发不是为了享受协同开发吗?
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