Examples with Predicate org.apache.camel.Predicate used on opensource projects

Example 91 with Predicate

use of org.apache.camel.Predicate in project camel by apache.

the class SimplePredicateParser method createPredicates.

/**
     * Creates the {@link Predicate}s from the AST nodes.
     *
     * @return the created {@link Predicate}s, is never <tt>null</tt>.
     */
private List<Predicate> createPredicates() {
    List<Predicate> answer = new ArrayList<Predicate>();
    for (SimpleNode node : nodes) {
        Expression exp = node.createExpression(expression);
        if (exp != null) {
            Predicate predicate = ExpressionToPredicateAdapter.toPredicate(exp);
            answer.add(predicate);
        }
    }
    return answer;
}

Example 92 with Predicate

use of org.apache.camel.Predicate in project camel by apache.

the class BinaryExpression method createRangeExpression.

private Expression createRangeExpression(final String expression, final Expression leftExp, final Expression rightExp) {
    return new Expression() {

        @Override
        public <T> T evaluate(Exchange exchange, Class<T> type) {
            Predicate predicate;
            String range = rightExp.evaluate(exchange, String.class);
            Matcher matcher = RANGE_PATTERN.matcher(range);
            if (matcher.matches()) {
                // wrap as constant expression for the from and to values
                Expression from = ExpressionBuilder.constantExpression(matcher.group(1));
                Expression to = ExpressionBuilder.constantExpression(matcher.group(3));
                // build a compound predicate for the range
                predicate = PredicateBuilder.isGreaterThanOrEqualTo(leftExp, from);
                predicate = PredicateBuilder.and(predicate, PredicateBuilder.isLessThanOrEqualTo(leftExp, to));
            } else {
                throw new SimpleIllegalSyntaxException(expression, right.getToken().getIndex(), operator + " operator is not valid. Valid syntax:'from..to' (where from and to are numbers).");
            }
            if (operator == BinaryOperatorType.NOT_RANGE) {
                predicate = PredicateBuilder.not(predicate);
            }
            boolean answer = predicate.matches(exchange);
            return exchange.getContext().getTypeConverter().convertTo(type, answer);
        }

        @Override
        public String toString() {
            return left + " " + token.getText() + " " + right;
        }
    };
}

Example 93 with Predicate

use of org.apache.camel.Predicate in project camel by apache.

the class BinaryExpression method createIsExpression.

private Expression createIsExpression(final String expression, final Expression leftExp, final Expression rightExp) {
    return new Expression() {

        @Override
        public <T> T evaluate(Exchange exchange, Class<T> type) {
            Predicate predicate;
            String name = rightExp.evaluate(exchange, String.class);
            if (name == null || "null".equals(name)) {
                throw new SimpleIllegalSyntaxException(expression, right.getToken().getIndex(), operator + " operator cannot accept null. A class type must be provided.");
            }
            Class<?> rightType = exchange.getContext().getClassResolver().resolveClass(name);
            if (rightType == null) {
                throw new SimpleIllegalSyntaxException(expression, right.getToken().getIndex(), operator + " operator cannot find class with name: " + name);
            }
            predicate = PredicateBuilder.isInstanceOf(leftExp, rightType);
            if (operator == BinaryOperatorType.NOT_IS) {
                predicate = PredicateBuilder.not(predicate);
            }
            boolean answer = predicate.matches(exchange);
            return exchange.getContext().getTypeConverter().convertTo(type, answer);
        }

        @Override
        public String toString() {
            return left + " " + token.getText() + " " + right;
        }
    };
}

Example 94 with Predicate

use of org.apache.camel.Predicate in project camel by apache.

the class SimpleLanguage method createPredicate.

public Predicate createPredicate(String expression) {
    ObjectHelper.notNull(expression, "expression");
    expression = loadResource(expression);
    // support old simple language syntax
    @SuppressWarnings("deprecation") Predicate answer = SimpleBackwardsCompatibleParser.parsePredicate(expression, allowEscape);
    if (answer == null) {
        // use the new parser
        SimplePredicateParser parser = new SimplePredicateParser(expression, allowEscape);
        answer = parser.parsePredicate();
    }
    return answer;
}

Example 95 with Predicate

use of org.apache.camel.Predicate in project camel by apache.

the class FilterBeforeSplitTest method createRouteBuilder.

@Override
protected RouteBuilder createRouteBuilder() throws Exception {
    return new RouteBuilder() {

        @Override
        public void configure() throws Exception {
            Predicate goodWord = body().contains("World");
            from("direct:start").to("mock:before").filter(goodWord).to("mock:good").end().split(body().tokenize(" "), new MyAggregationStrategy()).to("mock:split").end().to("mock:result");
        }
    };
}