README

predicatr interprets text as a boolean expression, supporting basic operators (&,|, !).

Predicatr.parse("true & false"); // false
Predicatr.parse("true & !false"); // true

Map<String, Object> variables = new HashMap<String, Object>();
variables.put("yes", true);
variables.put("no", false);
Predicatr.parse("yes | no", variables); // true

You can also check for the existence of a key or for a specific value

Map<String, Object> variables = new HashMap<String, Object>();
variables.put("com.platzhaltr", "property");
Predicatr.parse("com.acme?", variables); // false
Predicatr.parse("com.platzhaltr#property?", variables); // true

Development

git clone git://github.com/platzhaltr/predicatr.git
cd predicatr
mvn clean install