Examples with Operation com.tvd12.dahlia.math.Operation used on opensource projects

Example 1 with Operation

use of com.tvd12.dahlia.math.Operation in project dahlia by youngmonkeys.

the class QueryToPredicate method toDefaultPredicate.

protected Predicate<EzyObject> toDefaultPredicate(EzyObject query) {
    for (Entry kv : query.entrySet()) {
        String field = null;
        Object value = kv.getValue();
        String fieldOrOperation = (String) kv.getKey();
        Operation operation = Operation.valueOfKeyword(fieldOrOperation);
        if (operation != null) {
            EzyObject oValue = (EzyObject) value;
            for (Entry e : oValue.entrySet()) {
                field = (String) e.getKey();
                value = e.getValue();
                break;
            }
        } else if (value instanceof EzyObject) {
            EzyObject oValue = (EzyObject) value;
            for (Entry e : oValue.entrySet()) {
                String keyword = (String) e.getKey();
                operation = Operation.valueOfKeyword(keyword);
                value = e.getValue();
                break;
            }
        } else {
            field = fieldOrOperation;
            operation = Operation.EQ;
        }
        String qField = field;
        Object qValue = value;
        Operation qOperation = operation;
        return record -> {
            Object rValue = record.get(qField);
            int compareResult = compareValue(rValue, qValue);
            if (qOperation == Operation.GT)
                return compareResult > 0;
            if (qOperation == Operation.GTE)
                return compareResult >= 0;
            if (qOperation == Operation.LT)
                return compareResult < 0;
            if (qOperation == Operation.LTE)
                return compareResult <= 0;
            if (qOperation == Operation.NEQ)
                return compareResult != 0;
            return compareResult == 0;
        };
    }
    return record -> false;
}