Examples of org.apache.camel.Predicate

org.apache.camel.Predicate
emq.apache.org/camel/predicate.html">predicate on the message exchange to support things like scripting languages, XQuery or SQL as well as any arbitrary Java expression. @version $Revision: 563607 $


    public void testSimpleEq() throws Exception {
        exchange.getIn().setBody("foo");


        SimplePredicateParser parser = new SimplePredicateParser("${body} == 'foo'", true);
        Predicate pre = parser.parsePredicate();


        assertTrue(pre.matches(exchange));
    }

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     * Returns some descriptive text to describe this node
     */
    public String getLabel() {
        String language = getExpression();
        if (ObjectHelper.isNullOrBlank(language)) {
            Predicate predicate = getPredicate();
            if (predicate != null) {
                return predicate.toString();
            }
            Expression expressionValue = getExpressionValue();
            if (expressionValue != null) {
                return expressionValue.toString();
            }

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            // create the aggregator using a default collection
            AggregationStrategy strategy = createAggregationStrategy(routeContext);


            Expression aggregateExpression = getExpression().createExpression(routeContext);


            Predicate predicate = null;
            if (getCompletedPredicate() != null) {
                predicate = getCompletedPredicate().createPredicate(routeContext);
            }
            if (predicate != null) {
                aggregator = new Aggregator(processor, aggregateExpression, strategy, predicate);

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        // must validate configuration before creating processor
        validateConfiguration();


        Processor childProcessor = this.createChildProcessor(routeContext, false);


        Predicate when = null;
        if (onWhen != null) {
            when = onWhen.getExpression().createPredicate(routeContext);
        }


        Predicate handle = null;
        if (handled != null) {
            handle = handled.createPredicate(routeContext);
        }


        return new CatchProcessor(getExceptionClasses(), childProcessor, when, handle);

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        }


        // set other options
        answer.setParallelProcessing(isParallelProcessing());
        if (getCompletionPredicate() != null) {
            Predicate predicate = getCompletionPredicate().createPredicate(routeContext);
            answer.setCompletionPredicate(predicate);
        }
        if (getCompletionTimeoutExpression() != null) {
            Expression expression = getCompletionTimeoutExpression().createExpression(routeContext);
            answer.setCompletionTimeoutExpression(expression);

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        childProcessor = new UnitOfWorkProcessor(routeContext, childProcessor);


        String id = routeContext.getRoute().getId();
        onCompletions.put(id, childProcessor);


        Predicate when = null;
        if (onWhen != null) {
            when = onWhen.getExpression().createPredicate(routeContext);
        }


        // executor service is mandatory for on completion

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     * Returns some descriptive text to describe this node
     */
    public String getLabel() {
        String language = getExpression();
        if (ObjectHelper.isEmpty(language)) {
            Predicate predicate = getPredicate();
            if (predicate != null) {
                return predicate.toString();
            }
            Expression expressionValue = getExpressionValue();
            if (expressionValue != null) {
                return expressionValue.toString();
            }

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        }


        // do catch does not mandate a child processor
        Processor childProcessor = this.createChildProcessor(routeContext, false);


        Predicate when = null;
        if (onWhen != null) {
            when = onWhen.getExpression().createPredicate(routeContext);
        }


        Predicate handle = handledPolicy;
        if (handled != null) {
            handle = handled.createPredicate(routeContext);
        }


        return new CatchProcessor(exceptionClasses, childProcessor, when, handle);

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     * Sets an expectation that the given predicates matches the received messages by this endpoint
     */
    public void expectedMessagesMatches(Predicate... predicates) {
        for (int i = 0; i < predicates.length; i++) {
            final int messageIndex = i;
            final Predicate predicate = predicates[i];
            final AssertionClause clause = new AssertionClause(this) {
                public void run() {
                    addPredicate(predicate);
                    applyAssertionOn(MockEndpoint.this, messageIndex, assertExchangeReceived(messageIndex));
                }

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    /**
     * Adds an expectation that messages received should have the given exchange pattern
     */
    public void expectedExchangePattern(final ExchangePattern exchangePattern) {
        expectedMessagesMatches(new Predicate() {
            public boolean matches(Exchange exchange) {
                return exchange.getPattern().equals(exchangePattern);
            }
        });
    }

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