Examples with GenericRule org.knime.base.node.rules.engine.Rule.GenericRule used on opensource projects

Example 1 with GenericRule

use of org.knime.base.node.rules.engine.Rule.GenericRule in project knime-core by knime.

the class SimpleRuleParser method parse.

/**
 * Parses a whole {@link Rule}.
 *
 * @param rule A line representing a rule (possibly comment).
 * @param booleanOutcome Should the rule include only a boolean outcome ({@code true}), or it cannot ({@code false}
 *            ), or it can be either boolean or non-boolean ({@code null})?
 * @return The parsed {@link Rule}.
 * @throws ParseException Problem during parsing.
 */
public Rule parse(final String rule, final Boolean booleanOutcome) throws ParseException {
    if (RuleSupport.isComment(rule)) {
        return new GenericRule(rule, new Condition.Comment(rule), NoOutcome.getInstance());
    }
    final ParseState state = new ParseState(rule);
    final Condition condition = parseCondition(state);
    if (!state.isEnd()) {
        final Outcome outcome = parseOutcome(state, booleanOutcome);
        return new GenericRule(rule, condition, outcome);
    }
    throw new ParseException("No outcome specified.", state.getPosition());
}

Example 2 with GenericRule

use of org.knime.base.node.rules.engine.Rule.GenericRule in project knime-core by knime.

the class StreamingUtil method checkExpressions.

private static boolean checkExpressions(final Rule rule, final Predicate<Expression> check) {
    if (!rule.getCondition().isEnabled()) {
        // comment
        return true;
    }
    if (rule instanceof GenericRule) {
        final GenericRule gr = (GenericRule) rule;
        final Condition condition = gr.getCondition();
        if (condition instanceof GenericCondition) {
            final GenericCondition gc = (GenericCondition) condition;
            final Expression ce = gc.getExpression();
            final Outcome outcome = gr.getOutcome();
            if (outcome instanceof GenericOutcome) {
                final GenericOutcome go = (GenericOutcome) outcome;
                final Expression oe = go.getExpression();
                return check.test(oe) && check.test(ce);
            } else {
                return false;
            }
        } else {
            return false;
        }
    } else {
        return false;
    }
}