Examples with Iterator java.util.Iterator used on opensource projects

Example 6 with Iterator

use of java.util.Iterator in project camel by apache.

the class SimpleTest method testCollateEven.

public void testCollateEven() throws Exception {
    List<Object> data = new ArrayList<Object>();
    data.add("A");
    data.add("B");
    data.add("C");
    data.add("D");
    data.add("E");
    data.add("F");
    exchange.getIn().setBody(data);
    Iterator it = (Iterator) evaluateExpression("${collate(3)}", null);
    List chunk = (List) it.next();
    List chunk2 = (List) it.next();
    assertFalse(it.hasNext());
    assertEquals(3, chunk.size());
    assertEquals(3, chunk2.size());
    assertEquals("A", chunk.get(0));
    assertEquals("B", chunk.get(1));
    assertEquals("C", chunk.get(2));
    assertEquals("D", chunk2.get(0));
    assertEquals("E", chunk2.get(1));
    assertEquals("F", chunk2.get(2));
}

Example 7 with Iterator

use of java.util.Iterator in project camel by apache.

the class DefaultManagementObjectStrategy method getManagedObjectForProcessor.

@SuppressWarnings({ "deprecation", "unchecked" })
public Object getManagedObjectForProcessor(CamelContext context, Processor processor, ProcessorDefinition<?> definition, Route route) {
    ManagedProcessor answer = null;
    if (definition instanceof RecipientListDefinition) {
        // special for RecipientListDefinition, as the processor is wrapped in a pipeline as last
        Pipeline pipeline = (Pipeline) processor;
        Iterator<Processor> it = pipeline.getProcessors().iterator();
        while (it.hasNext()) {
            processor = it.next();
        }
    } else if (definition instanceof ThreadsDefinition) {
        // special for ThreadsDefinition, as the processor is wrapped in a pipeline as first
        Pipeline pipeline = (Pipeline) processor;
        Iterator<Processor> it = pipeline.getProcessors().iterator();
        processor = it.next();
    }
    // unwrap delegates as we want the real target processor
    Processor target = processor;
    while (target != null) {
        // skip error handlers
        if (target instanceof ErrorHandler) {
            return false;
        }
        if (target instanceof ConvertBodyProcessor) {
            answer = new ManagedConvertBody(context, (ConvertBodyProcessor) target, definition);
        } else if (target instanceof ChoiceProcessor) {
            answer = new ManagedChoice(context, (ChoiceProcessor) target, definition);
        } else if (target instanceof Delayer) {
            answer = new ManagedDelayer(context, (Delayer) target, definition);
        } else if (target instanceof Throttler) {
            answer = new ManagedThrottler(context, (Throttler) target, definition);
        } else if (target instanceof DynamicRouter) {
            answer = new ManagedDynamicRouter(context, (DynamicRouter) target, (org.apache.camel.model.DynamicRouterDefinition) definition);
        } else if (target instanceof RoutingSlip) {
            answer = new ManagedRoutingSlip(context, (RoutingSlip) target, (org.apache.camel.model.RoutingSlipDefinition) definition);
        } else if (target instanceof FilterProcessor) {
            answer = new ManagedFilter(context, (FilterProcessor) target, (ExpressionNode) definition);
        } else if (target instanceof LogProcessor) {
            answer = new ManagedLog(context, (LogProcessor) target, definition);
        } else if (target instanceof LoopProcessor) {
            answer = new ManagedLoop(context, (LoopProcessor) target, (org.apache.camel.model.LoopDefinition) definition);
        } else if (target instanceof MarshalProcessor) {
            answer = new ManagedMarshal(context, (MarshalProcessor) target, (org.apache.camel.model.MarshalDefinition) definition);
        } else if (target instanceof UnmarshalProcessor) {
            answer = new ManagedUnmarshal(context, (UnmarshalProcessor) target, (org.apache.camel.model.UnmarshalDefinition) definition);
        } else if (target instanceof CircuitBreakerLoadBalancer) {
            answer = new ManagedCircuitBreakerLoadBalancer(context, (CircuitBreakerLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof FailOverLoadBalancer) {
            answer = new ManagedFailoverLoadBalancer(context, (FailOverLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof RandomLoadBalancer) {
            answer = new ManagedRandomLoadBalancer(context, (RandomLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof RoundRobinLoadBalancer) {
            answer = new ManagedRoundRobinLoadBalancer(context, (RoundRobinLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof StickyLoadBalancer) {
            answer = new ManagedStickyLoadBalancer(context, (StickyLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof TopicLoadBalancer) {
            answer = new ManagedTopicLoadBalancer(context, (TopicLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof WeightedLoadBalancer) {
            answer = new ManagedWeightedLoadBalancer(context, (WeightedLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof RecipientList) {
            answer = new ManagedRecipientList(context, (RecipientList) target, (RecipientListDefinition) definition);
        } else if (target instanceof Splitter) {
            answer = new ManagedSplitter(context, (Splitter) target, (org.apache.camel.model.SplitDefinition) definition);
        } else if (target instanceof MulticastProcessor) {
            answer = new ManagedMulticast(context, (MulticastProcessor) target, definition);
        } else if (target instanceof SamplingThrottler) {
            answer = new ManagedSamplingThrottler(context, (SamplingThrottler) target, definition);
        } else if (target instanceof Resequencer) {
            answer = new ManagedResequencer(context, (Resequencer) target, definition);
        } else if (target instanceof RollbackProcessor) {
            answer = new ManagedRollback(context, (RollbackProcessor) target, definition);
        } else if (target instanceof StreamResequencer) {
            answer = new ManagedResequencer(context, (StreamResequencer) target, definition);
        } else if (target instanceof SetBodyProcessor) {
            answer = new ManagedSetBody(context, (SetBodyProcessor) target, (org.apache.camel.model.SetBodyDefinition) definition);
        } else if (target instanceof RemoveHeaderProcessor) {
            answer = new ManagedRemoveHeader(context, (RemoveHeaderProcessor) target, definition);
        } else if (target instanceof RemoveHeadersProcessor) {
            answer = new ManagedRemoveHeaders(context, (RemoveHeadersProcessor) target, definition);
        } else if (target instanceof SetHeaderProcessor) {
            answer = new ManagedSetHeader(context, (SetHeaderProcessor) target, (org.apache.camel.model.SetHeaderDefinition) definition);
        } else if (target instanceof RemovePropertyProcessor) {
            answer = new ManagedRemoveProperty(context, (RemovePropertyProcessor) target, definition);
        } else if (target instanceof RemovePropertiesProcessor) {
            answer = new ManagedRemoveProperties(context, (RemovePropertiesProcessor) target, definition);
        } else if (target instanceof SetPropertyProcessor) {
            answer = new ManagedSetProperty(context, (SetPropertyProcessor) target, (org.apache.camel.model.SetPropertyDefinition) definition);
        } else if (target instanceof ExchangePatternProcessor) {
            answer = new ManagedSetExchangePattern(context, (ExchangePatternProcessor) target, definition);
        } else if (target instanceof ScriptProcessor) {
            answer = new ManagedScript(context, (ScriptProcessor) target, (org.apache.camel.model.ScriptDefinition) definition);
        } else if (target instanceof StopProcessor) {
            answer = new ManagedStop(context, (StopProcessor) target, definition);
        } else if (target instanceof ThreadsProcessor) {
            answer = new ManagedThreads(context, (ThreadsProcessor) target, definition);
        } else if (target instanceof ThrowExceptionProcessor) {
            answer = new ManagedThrowException(context, (ThrowExceptionProcessor) target, definition);
        } else if (target instanceof TransformProcessor) {
            answer = new ManagedTransformer(context, (TransformProcessor) target, (org.apache.camel.model.TransformDefinition) definition);
        } else if (target instanceof PredicateValidatingProcessor) {
            answer = new ManagedValidate(context, (PredicateValidatingProcessor) target, (org.apache.camel.model.ValidateDefinition) definition);
        } else if (target instanceof WireTapProcessor) {
            answer = new ManagedWireTapProcessor(context, (WireTapProcessor) target, definition);
        } else if (target instanceof SendDynamicProcessor) {
            answer = new ManagedSendDynamicProcessor(context, (SendDynamicProcessor) target, definition);
        } else if (target instanceof SendProcessor) {
            SendProcessor sp = (SendProcessor) target;
            // special for sending to throughput logger
            if (sp.getDestination() instanceof LogEndpoint) {
                LogEndpoint le = (LogEndpoint) sp.getDestination();
                if (le.getLogger() instanceof ThroughputLogger) {
                    ThroughputLogger tl = (ThroughputLogger) le.getLogger();
                    answer = new ManagedThroughputLogger(context, tl, definition);
                }
            }
            // regular send processor
            if (answer == null) {
                answer = new ManagedSendProcessor(context, (SendProcessor) target, definition);
            }
        } else if (target instanceof BeanProcessor) {
            answer = new ManagedBeanProcessor(context, (BeanProcessor) target, definition);
        } else if (target instanceof IdempotentConsumer) {
            answer = new ManagedIdempotentConsumer(context, (IdempotentConsumer) target, (org.apache.camel.model.IdempotentConsumerDefinition) definition);
        } else if (target instanceof AggregateProcessor) {
            answer = new ManagedAggregateProcessor(context, (AggregateProcessor) target, (org.apache.camel.model.AggregateDefinition) definition);
        } else if (target instanceof Enricher) {
            answer = new ManagedEnricher(context, (Enricher) target, (org.apache.camel.model.EnrichDefinition) definition);
        } else if (target instanceof PollEnricher) {
            answer = new ManagedPollEnricher(context, (PollEnricher) target, (org.apache.camel.model.PollEnrichDefinition) definition);
        } else if (target instanceof org.apache.camel.spi.ManagementAware) {
            return ((org.apache.camel.spi.ManagementAware<Processor>) target).getManagedObject(processor);
        }
        // special for custom load balancer
        if (definition instanceof LoadBalanceDefinition) {
            LoadBalanceDefinition lb = (LoadBalanceDefinition) definition;
            if (lb.getLoadBalancerType() instanceof CustomLoadBalancerDefinition) {
                answer = new ManagedCustomLoadBalancer(context, (LoadBalancer) target, (LoadBalanceDefinition) definition);
            }
        }
        if (answer != null) {
            // break out as we found an answer
            break;
        }
        // no answer yet, so unwrap any delegates and try again
        if (target instanceof DelegateProcessor) {
            target = ((DelegateProcessor) target).getProcessor();
        } else {
            // no delegate so we dont have any target to try next
            break;
        }
    }
    if (answer == null && definition instanceof ProcessDefinition) {
        answer = new ManagedProcess(context, target, (ProcessDefinition) definition);
    } else if (answer == null) {
        // fallback to a generic processor
        answer = new ManagedProcessor(context, target, definition);
    }
    answer.setRoute(route);
    answer.init(context.getManagementStrategy());
    return answer;
}

Example 8 with Iterator

use of java.util.Iterator in project camel by apache.

the class DefaultJdbcPrepareStatementStrategy method createPopulateIterator.

@Override
public Iterator<?> createPopulateIterator(final String query, final String preparedQuery, final int expectedParams, final Exchange exchange, final Object value) throws SQLException {
    Map<?, ?> map = null;
    if (exchange.getIn().hasHeaders()) {
        if (exchange.getIn().getHeader(JdbcConstants.JDBC_PARAMETERS) != null) {
            // header JDBC_PARAMETERS takes precedence over regular headers
            map = exchange.getIn().getHeader(JdbcConstants.JDBC_PARAMETERS, Map.class);
        } else {
            map = exchange.getIn().getHeaders();
        }
    }
    final Map<?, ?> headerMap = map;
    if (hasNamedParameters(query)) {
        // create an iterator that returns the value in the named order
        try {
            return new Iterator<Object>() {

                private NamedQueryParser parser = new NamedQueryParser(query);

                private Object next;

                private boolean done;

                private boolean preFetched;

                @Override
                public boolean hasNext() {
                    if (!done && !preFetched) {
                        next();
                        preFetched = true;
                    }
                    return !done;
                }

                @Override
                public Object next() {
                    if (!preFetched) {
                        String key = parser.next();
                        if (key == null) {
                            done = true;
                            return null;
                        }
                        // the key is expected to exist, if not report so end user can see this
                        boolean contains = headerMap != null && headerMap.containsKey(key);
                        if (!contains) {
                            throw new RuntimeExchangeException("Cannot find key [" + key + "] in message body or headers to use when setting named parameter in query [" + query + "]", exchange);
                        }
                        next = headerMap.get(key);
                    }
                    preFetched = false;
                    return next;
                }

                @Override
                public void remove() {
                // noop
                }
            };
        } catch (Exception e) {
            throw new SQLException("Error iterating parameters for the query: " + query, e);
        }
    } else {
        // just use a regular iterator
        return exchange.getContext().getTypeConverter().convertTo(Iterator.class, headerMap != null ? headerMap.values() : null);
    }
}

Example 9 with Iterator

use of java.util.Iterator in project camel by apache.

the class KafkaProducer method createRecorder.

@SuppressWarnings("unchecked")
protected Iterator<ProducerRecord> createRecorder(Exchange exchange) throws CamelException {
    String topic = endpoint.getConfiguration().getTopic();
    if (!endpoint.isBridgeEndpoint()) {
        topic = exchange.getIn().getHeader(KafkaConstants.TOPIC, topic, String.class);
    }
    if (topic == null) {
        throw new CamelExchangeException("No topic key set", exchange);
    }
    // endpoint take precedence over header configuration
    final Integer partitionKey = endpoint.getConfiguration().getPartitionKey() != null ? endpoint.getConfiguration().getPartitionKey() : exchange.getIn().getHeader(KafkaConstants.PARTITION_KEY, Integer.class);
    final boolean hasPartitionKey = partitionKey != null;
    // endpoint take precedence over header configuration
    Object key = endpoint.getConfiguration().getKey() != null ? endpoint.getConfiguration().getKey() : exchange.getIn().getHeader(KafkaConstants.KEY);
    final Object messageKey = key != null ? tryConvertToSerializedType(exchange, key, endpoint.getConfiguration().getKeySerializerClass()) : null;
    final boolean hasMessageKey = messageKey != null;
    Object msg = exchange.getIn().getBody();
    // is the message body a list or something that contains multiple values
    Iterator<Object> iterator = null;
    if (msg instanceof Iterable) {
        iterator = ((Iterable<Object>) msg).iterator();
    } else if (msg instanceof Iterator) {
        iterator = (Iterator<Object>) msg;
    }
    if (iterator != null) {
        final Iterator<Object> msgList = iterator;
        final String msgTopic = topic;
        return new Iterator<ProducerRecord>() {

            @Override
            public boolean hasNext() {
                return msgList.hasNext();
            }

            @Override
            public ProducerRecord next() {
                // must convert each entry of the iterator into the value according to the serializer
                Object next = msgList.next();
                Object value = tryConvertToSerializedType(exchange, next, endpoint.getConfiguration().getSerializerClass());
                if (hasPartitionKey && hasMessageKey) {
                    return new ProducerRecord(msgTopic, partitionKey, key, value);
                } else if (hasMessageKey) {
                    return new ProducerRecord(msgTopic, key, value);
                } else {
                    return new ProducerRecord(msgTopic, value);
                }
            }

            @Override
            public void remove() {
                msgList.remove();
            }
        };
    }
    // must convert each entry of the iterator into the value according to the serializer
    Object value = tryConvertToSerializedType(exchange, msg, endpoint.getConfiguration().getSerializerClass());
    ProducerRecord record;
    if (hasPartitionKey && hasMessageKey) {
        record = new ProducerRecord(topic, partitionKey, key, value);
    } else if (hasMessageKey) {
        record = new ProducerRecord(topic, key, value);
    } else {
        record = new ProducerRecord(topic, value);
    }
    return Collections.singletonList(record).iterator();
}

Example 10 with Iterator

use of java.util.Iterator in project groovy by apache.

the class FlatNodeListTraversal method process.

public AST process(AST t) {
    GroovySourceAST node = (GroovySourceAST) t;
    // fetch all the nodes in this AST into a List
    NodeCollector collector = new NodeCollector();
    AntlrASTProcessor internalTraversal = new PreOrderTraversal(collector);
    internalTraversal.process(t);
    List listOfAllNodesInThisAST = collector.getNodes();
    // process each node in turn
    setUp(node);
    Iterator itr = listOfAllNodesInThisAST.iterator();
    while (itr.hasNext()) {
        GroovySourceAST currentNode = (GroovySourceAST) itr.next();
        accept(currentNode);
    }
    tearDown(node);
    return null;
}