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Previous Chapter

Chapter 18. Testing

List of Figures

Index

[SYMBOL][A][B][C][D][E][F][G][H][I][J][L][M][N][O][P][Q][R][S][T][U][V][W][X]

SYMBOL

?. operator @Autowired annotation, 2^nd @Component annotation @ContextConfiguration annotation @Gateway annotation @Header annotation, 2^nd @ManagedAttribute annotation @ManagedOperation annotation @ManagedResource annotation @MessageEndpoint annotation @Publisher annotation @Repository annotation @RunWith annotation @Service annotation, 2^nd @Test annotation @XmlJavaTypeAdapter annotation @XmlRootElement annotation <chain> element, 2^nd <channel> element, 2^nd <context:mbean-export> element, 2^nd <context:property-place-holder> element <control-bus> element <file:file-to-bytes-transformer> element <file:file-to-string-transformer> element <file:inbound-channel-adapter> element attributes FileReadingMessageSource class <file:outbound-channel-adapter> element, 2^nd <file:outbound-gateway> element <filter> element <gateway> element, 2^nd <http:outbound-gateway> element <inbound-channel-adapter> element, 2^nd <int-ws:inbound-gateway> element <int-xmpp:chat-to> element <jms:inbound-channel-adapter> element <listener> element <listener-container> element <logging-channel-adapter> element, 3^rd versus service-activator <mail:inbound-channel-adapter> element java-mail-properties attribute should-delete-messages attribute store-uri attribute <mail:mail-to-string-transformer> element <mail:outbound-channel-adapter> element <message-history> element, 2^nd <outbound-channel-adapter> element <payload-type-router> element <poller> element <queue> element <service-activator> element versus logging-channel-adapter

A

AbstractConsumerEndpoint-Parser class AbstractEndpoint class AbstractFileListFilter class AbstractMailMessage-Transformer class AbstractMessageRouter class AbstractPollingEndpoint class accept() method AcceptOnceFileListFilter class ACID acknowledge property acknowledge() method ActiveMQ embedded brokers versus JMS Aggregator pattern AggregatorParser class aggregators, 2^nd, 4^th and CorrelatingMessage-Handler and splitters dinner party example grouping based on timing release strategy similarity to resequencers timeouts when to split annotations @Autowired, 2^nd @Component @ContextConfiguration @Header, 2^nd @ManagedAttribute @ManagedOperation @ManagedResource @MessageEndpoint @Publisher @Repository @RunWith @Service, 2^nd @Test @XmlJavaTypeAdapter @XmlRoolElement annotating domain classes for JAXB, 2^nd for management meta-annotations stereotypes AOP. See annotations, @Publisher. ApplicationContext interface, 2^nd BundleContext applications Hello World example modularizing with OSGi architecture, 2^nd aspect-oriented programming. See annotations, @Publisher. assertThat() method asynchronous handoff, 2^nd, 3^rd AsyncItemProcessor class AsyncItemWriter class authentication, OAuth AUTO_ACKNOWLEDGE Automatic Resource Management availability, of messaging

B

banking application example batch jobs, 10^th benefits of example, 2^nd externalizing process execution, 2^nd extract, transform, and load processes failure FieldSetMapper interface file channel adapter in chunks input files ItemProcessor interface ItemReader interface ItemWriter interface JobExecution interface JobLauncher interface launching via messages, 2^nd sending informational messages streaming input data tasklets versus online transaction processing with Spring Batch, 2^nd batch payment-processing example, 2^nd, 3^rd BeanDefinitionParser interface BeanPostProcessor interface bidirectional endpoints, versus unidirectional blocking operations booking service example, 2^nd BroadcastingDispatcher buffered channels. See queue channels. BundleContext interface bundles and point-to-point messaging BundleContext messaging between bundles, 2^nd publish-subscribe publishing between bundles business logic, 7^th content enricher domain-driven, 2^nd header enricher publishing messages based on in-service events BytesMessage interface

C

chaining endpoints Channel Adapter pattern channel adapters, 2^nd and batch jobs and JMS and XMPP, 2^nd configuring for email, 2^nd converting service activator to dm-inbound-channel-adapter dm-outbound-channel-adapter event-driven inbound channel adapters file:inbound-channel-adapter file:outbound-channel-adapter, 2^nd for Twitter for Twitter direct messages inbound inbound channel adapter for email inbound-channel-adapter inbound-only messages injecting latches into, 2^nd logging-channel-adapter, 2^nd, 3^rd managing transactions, 2^nd mentions-inbound-channel-adapter message-driven outbound, 2^nd, 3^rd outbound channel adapters for email outbound-channel-adapter, 2^nd polling presence-inbound-channel-adapter search-inbound-channel-adapter, 2^nd. See also unidirectional end-points. channel attribute, 2^nd channel interceptors MessageSelectingInterceptor WireTap. See also ChannelInterceptor interface. ChannelInterceptor interface, 2^nd and monitoring, 2^nd ChannelInterceptorAdapter class ChannelResolver interface channels, 2^nd, 17^th and queues and routers, 2^nd blocking operations boundaries buffering of messages channel interceptors ChannelResolver collaborators, 2^nd consumers consumption model defining task executor executor channels for rejected messages in Spring WS input-channel, 2^nd MessageChannel interface output-channel, 2^nd PollableChannel interface PriorityChannel class producers publish-subscribe, 2^nd, 3^rd queue channels sharing context SubscribableChannel interface synchronous testing on output channel toJMS which to use, 2^nd. See also destinations. ChunkListener ChunkMessageChannelItem-Writer class classpath, changing at runtime CLIENT_ACKNOWLEDGE client-side storage collaboration collaborators, 5^th ChannelInterceptor, 2^nd MessageDispatcher, 2^nd commit() method communication, 5^th and Spring Integration, 2^nd synchronous versus asynchronous, 2^nd comparator comparator attribute compensating transactions Competing Consumers pattern concurrency, 2^nd, 7^th and task executors and threading, 2^nd multithreading thread safety Connection class connection-factory attribute ConsumerEndpointFactoryBean class consumers MessageHandler Content-Based Router pattern content-based routers, 5^th default header value routers payload-type context namespace, <con-text:mbean-export> element Control Bus pattern element and Groovy and Spring Expression Language control messages starting and stopping endpoints control messages and Groovy convertAndSend() method convert-exceptions attribute CorrelatingMessageHandler class, 6^th and aggregators and MessageGroup interface and resequencers extension points correlation, 7^th Correlation ID correlation key correlation strategy design patterns, 2^nd dinner party example, 2^nd messages mise en place release strategy Correlation ID correlation keys, 2^nd and CorrelatingMessage-Handler correlation strategy CorrelationStrategy interface credit card processing example Cron expressions CronTrigger class cross-cutting concerns, monitoring, 2^nd customized infrastructure

D

data, simplest possible representation of, 2^nd databases, shared-database integration DataSourceTransactionMan-ager class Datatype Channel pattern debugging, reducing with testing and logging DefaultMessageListener-Container default-reply-destination attribute default-reply-queue-name attribute default-reply-topic-name attribute DefaultResponseErrorHandler class DELETE, HTTP requests delete-files attribute delete-source-files attribute dependencies, avoiding with gateways and service activators dependency injection, 2^nd, 3^rd, 4^th design patterns, for correlation, 2^nd. See also enterprise integration patterns. destination attribute destination-name attribute DestinationResolver and inbound gateway destinationresolver attribute destinations, destination-name attribute determineTargetChannels() method dinner party example, 2^nd aggregating based on timing and aggregators and resequencers and splitters scatter-gather DirectChannel class directory attribute DispatcherServlet class distributed transactions dm-inbound-channel-adapter dm-outbound-channel-adapter doAnswer() method domain classes, annotating for JAXB, 2^nd domain model, 6^th content enricher header enricher messaging gateways, 2^nd simplifying data representation, 2^nd domain-specific languages

E

EasyMock. See mocks. Eclipse Gemini Blueprint project and messaging and point-to-point messaging and publish-subscribe messaging with gateways and service activators. See also Open Services Gateway initiative framework. EDA. See event-driven architecture. email, 16^th and notifications configuring, 2^nd IMAP Idle inbound channel adapter message headers outbound channel adapter polling for receiving, 2^nd receiving event-driven emails sending, 2^nd transforming inbound messages transforming outbound messages EndpointMapping interface Enterprise JavaBeans error-code attribute errors-key attribute event-driven architecture staged Event-Driven Consumer pattern event-driven consumers, 2^nd, 3^rd, 4^th event-driven endpoints outbound event-driven inbound endpoints event-driven outbound endpoints event-driven programming EventDrivenConsumer class, 2^nd eventual consistency idempotent receivers exceptions IOException MessageDeliveryException throwing when messages are rejected UnsupportedOperation-Exception executor channels Executor interface expression attribute expressions, 2^nd routing by Extensible Messaging and Presence Protocol (XMPP), 9^th adapters and channel adapters, 2^nd and gateway proxies presence receiving messages sending messages Extensible Stylesheet Language Transformation (XSLT) extension points, CorrelatingMessageHandler class extract, transform, and load processes extractPayload extract-payload attribute extract-reply-payload attribute extract-request-payload attribute

F

Factory pattern FactoryBean interface failure, in batch jobs FieldSetMapper interface File class immutability File payload file transformers file, namespace file-based integration advantages and disadvantages of compared to other approaches potential problems reading files, 2^nd writing to files, 2^nd FileListFilter interface FileNameGenerator filename-generator attribute filename-pattern attribute FileReadingMessageSource class, 2^nd, 3^rd FileToByteArrayTransformer class file-to-bytes-transformer file-to-string-transformer FileToStringTransformer class filter attribute filtering, 6^th element expressions message filter API rejected messages selective processing fixed-delay attribute fixed-rate attribute fixed-rate polling when to use flight booking example, 2^nd flight info example and proxies content enricher, 2^nd delay notifications header enricher marshalling and unmarshalling testing wiring, 2^nd flow separating flows with Wire Tap pattern, 2^nd splitting into subflows to improve testing transactional fromMessage() method Future Object pattern

G

Gateway adapter gateway element gateway proxies gateways and OSGi inbound, 2^nd managing transactions, 2^nd outbound outbound HTTP requests processing inbound requests Spring WS-based Gatherer pattern GET, HTTP requests getObject() method getPhase() method global transaction management groovy namespace Groovy, for control messages

H

Hamcrest handoff asynchronous, 2^nd happens-before relationships, testing hasPayload() method header enricher header value routers HeaderAttributeCorrelation-Strategy class header-mapper attribute headers for email header enricher history MailHeaders.ATTACHMENT_FILENAME MailHeaders.BCC MailHeaders.CC MailHeaders.CONTENT_TYPE MailHeaders.FROM MailHeaders.MULTIPART_MODE MailHeaders.SUBJECT MailHeaders.TO MessageHeaders class REPLY_TO replyChannel splitting based on testing, 2^nd testing with assertions Twitter XmppHeaders.TO Hello World example history header Hollywood principle HttpRequestHandlerServlet class HttpRequestHandling-Controller class HttpRequestHandlingMessaging-Gateway class

I

id attribute, 2^nd, 3^rd idempotent receivers IMAP. See Internet Message Access Protocol. inbound channel adapters email event-driven for Twitter direct messages inbound-only messages polling presence-inbound-channel-adapter inbound endpoints event-driven polling inbound gateways, 3^rd and DestinationResolver and Spring WS attributes processing requests inbound-channel-adapter incomplete groups incremental updates infrastructure, customized input directory, leaving files in input-channel, 2^nd input-channel attribute, 2^nd instantiating, endpoints, 2^nd integration, file-based, 2^nd IntegrationMBeanExporter class interceptors Internet Message Access Protocol (IMAP) Internet Relay Chat (IRC), future support for Inversion of Control (IoC), 7^th and Eclipse Gemini Blueprint dependency injection, 2^nd Factory pattern Hollywood principle method invocation, 2^nd IoC. See Inversion of Control. IOException is matcher isAutoStartup() method isComplete() method isRunning() method ItemProcessor interface, 2^nd ItemReader interface ItemWriter interface

J

Jabber. See Extensible Message and Presence Protocol. JAR files lack of encapsulation. See also bundles. Java Architecture for XML Binding (JAXB), annotating domain classes for, 2^nd Java Mail API Java Management Extensions (JMX), 7^th and notifications attributes JMX adapters managing channels and endpoints, 2^nd operations overhead Java Message Service (JMS), 3^rd, 5^th Java Message Service (JMS) and transactions availability benefits of channel adapter destinations distributed transactions jms namespace load balancing mapping to Spring Integration messages message-driven POJOs, 2^nd MessageListener messages messaging between runtimes, 2^nd messaging gateway payload mapping persistence Queues receiving JMS messages relationship to Spring Integration, 2^nd scalability sending JMS messages sending Spring Integration messages as body of JMS messages, 2^nd Session interface support for, 2^nd Topics transaction basics transactions, 2^nd type conversions when to use Java virtual machines (JVMs) java.nio libraries java.util.Timer class java-mail-properties attribute javaMailProperties property JavaMailSender interface JavaScript Object Notation, marshalling and unmarshalling JAXB. See Java Architecture for XML Binding. JdbcMessageStore class JMock. See mocks. jms namespace JMS. See Java Message Service. JMSRedelivered property JMSReplyTo property, 2^nd JmsSendingMessageHandler class JmsTemplate class JmsTransactionManager class JMX. See Java Management Extensions. JndiObjectFactoryBean JobExecution class, 2^nd JobExecutionListener JobLauncher interface run() method JobLaunchingMessageHandler class JobLaunchRequest payload JobParameters class JobRespository interface JVMs. See Java virtual machines.

L

latches and mocks injecting into endpoints, 2^nd libraries, java.nio Lifecycle interface, 2^nd listFiles() method live collaboration applying incoming changes using increments load balancing, with JMS LoadBalancingStrategy local transaction management logging-channel-adapter loose coupling, 10^th dependency injection, 2^nd event-driven architecture identifying highly coupled systems importance of, 2^nd negative consequences service-oriented architecture system-level coupling, 2^nd type-level coupling

M

MailHeaders class ATTACHMENT_FILENAME header BCC header CC header CONTENT_TYPE header FROM header MULTIPART_MODE header REPLY_TO header SUBJECT header TO header managing, with annotations mapping, between JMS and Spring Integration messages Map-Reduce, compared to scatter-gather, 2^nd Marshaller interface, 4^th marshalling endpoint, 2^nd MarshallingMessageConverter MarshallingMessageConverter class marshalling-transformer element max-messages-per-poll attribute maxMessagesPerPoll property mentions-inbound-channel-adapter message body. See payload. Message Channel pattern. See also message channels. Message Endpoint pattern message endpoints, 2^nd @MessageEndpoint annotation message filter API message filters, 6^th element expressions for selective processing rejected messages message groups, 2^nd and CorrelatingMessage-Handler based on timing incomplete groups processors releasing. See also MessageGroup interface. message headers message history, 2^nd Message interface, 3^rd lack of setters message passing Message pattern. See also messages. message payload message properties. See headers. message router API message routers, 14^th ChannelResolver configuring, 2^nd content-based, 2^nd default header value routers message router API multiple destinations, 2^nd multiple return values payload-type recipient list routers using SpEL message transformers Message Translator pattern. See transformers. message-based integration compared to other approaches MessageBuilder MessageBuilder class MessageChannel interface and monitoring attributes. See also Message Channel pattern. MessageChannelMetrics interface MessageConverter interface, 2^nd message-converters attribute MessageDeliveryException MessageDispatcher interface, 4^th BroadcastingDispatcher UnicastingDispatcher MessageDispatcherServlet class message-driven applications message history, 2^nd trade-offs message-driven channel adapters message-driven POJOs, 2^nd MessageFilter MessageFilter class MessageGroup interface and CorrelatingMessage-Handler. See also message groups. MessageGroupProcessor interface MessageGroupStore interface MessageHandler MessageHandler interface, 2^nd, 3^rd attributes monitoring MessageHeaders class MessageListener interface, 2^nd, 3^rd, 4^th MessageListenerAdapter class MessageProducer interface messages, 11^th, 17^th and channels, 2^nd and XPath and XSLT asynchronous, 2^nd, 3^rd availability based on in-service events buffering channel adapters control messages correlating creating SOAP messages design patterns for correlation, 2^nd discarding email, 2^nd endpoints, 2^nd event-driven emails explained expressing intent in file-based, 2^nd filtering, 2^nd from Twitter search, 2^nd from Twitter timeline Groovy control messages grouping based on timing grouping in endpoints headers, 2^nd immutability inbound-only informational messages about batch jobs JMS lack of setters launching batch jobs, 2^nd mapping from JMS marshalling and unmarshal-ling matching for testing, 2^nd message endpoints, 2^nd message groups message history, 2^nd Message interface, 2^nd message passing message-based integration MessageChannel interface message-driven POJOs message-driven services, 2^nd messaging gateways, 2^nd, 3^rd multiple return values payload persistence problems with reordering processing inbound HTTP requests publishing on schedule receiving email messages, 2^nd receiving JMS messages receiving XMPP messages rejected resequencers, 2^nd Return Address pattern return type matching routing, 2^nd routing based on XML pay-load routing to multiple destinations, 2^nd scalability sending between OSGi bundles, 2^nd sending email messages, 2^nd sending JMS messages sending XMPP messages splitters testing headers, 2^nd testing on output tracking transforming inbound email messages transforming outbound email messages Twitter, 2^nd Twitter direct messages Twitter retweets, replies, and mentions, 2^nd unwrapping payloads, 2^nd validating XML messages with Java Message Service, 2^nd with XML payloads, 2^nd XMPP, 2^nd MessageSelectingInterceptor MessageSelector class MessageSelector, PayloadTypeSelector MessageSource interface Messaging Gateway pattern messaging gateways, 2^nd, 3^rd meta-annotations method attribute method invocation, 2^nd MethodInvokingMessage-GroupProcessor class microblogging MimeMessage class mise en place resequencers Mockito, 2^nd mocks, 2^nd, 4^th and latching Mockito Model-View-Controller, and REST modularity, OSGi, 2^nd monitoring, 10^th channels and endpoints using JMX, 2^nd message channels message handlers message history, 2^nd pollable channels queue channels multithreading, and concurrency

N

name attribute nextExecutionTime() method NioFileLocker class Notifiable interface NotificationFilter interface

O

OAuth authentication Object class ObjectMessage interface objects converting to XML that represent XML transforming files into online status. See presence. online transaction processing, versus batch Open Services Gateway initiative, 9^th bundles development time complexity module system, 2^nd Service Registry, 2^nd why to use with messaging. See also Eclipse Gemini Blueprint project. operations, and JMX ordering, of files org.springframework.integration.test package osgi namespace OSGi. See Open Services Gateway initiative. outbound endpoints event-driven polling outbound gateways calling web services extract-request-payload attribute outbound HTTP requests outbound-channel-adapter, 2^nd, 3^rd output channel, testing output-channel, 2^nd output-channel attribute OXM. See object-to-XML mapping.

P

parsers and XML payloads streaming parsing endpoints patterns. See enterprise integration patterns; design patterns. PayloadMatcher class payload-type routers PayloadTypeSelector PeriodicTrigger class persistence, of messaging Phased interface Pipes-and-Filters pattern Plain Old XML (POX) exposing endpoints Spring WS, 2^nd PlatformTransactionManager interface point-to-point channels. See also queues. point-to-point messaging, and OSGi bundles PollableChannel interface, 2^nd, 3^rd, 4^th and monitoring attributes pollers. See polling. polling, 2^nd, 6^th advanced configuration, 2^nd and task executors and transactions at precise times configuring pollers, 2^nd controlling frequency of, 2^nd fixed-delay versus fixed-rate fixed-rate max-messages-per-poll attribute outbound endpoints polling configuration polling inbound endpoints timeouts whether to poll polling configuration polling endpoints polling outbound endpoints PollingConsumer class, 2^nd POP3. See Post Office Protocol. POST and SOAP HTTP requests Post Office Protocol, 2^nd postReceive() method postSend() method POX. See Plain Old XML. preReceive() method presence presence-inbound-channel-adapter preSend() method PriorityBlockingQueue class PriorityChannel class producers programming in XML, why not to property-placeholder element proxies and messaging gateways publishing, scheduling Publish-Subscribe Channel publish-subscribe channels, 2^nd, 3^rd, 4^th, 5^th, 7^th and scatter-gather defining task executor publish-subscribe messaging, between bundles pub-sub-domain attribute

Q

Quartz queue channels QueueChannel class, 2^nd, 3^rd and monitoring attributes monitoring testing QueueChannelMetrics class queues

R

race conditions, 2^nd reading files, 2^nd unfinished files receive() method, 2^nd, 3^rd, 4^th receiveAndConvert() method receiveTimeout property receiving email messages, 2^nd event-driven emails XMPP messages recipient list routers RecursiveLeafOnlyDirectory-Scanner regex-pattern attribute RELAX NG release strategy, 2^nd for aggregators releasePartialSequences flag Remote Procedure Calls (RPC) compared to other approaches REPLY_CHANNEL header reply-channel attribute replyChannel header reply-destination-name attribute reply-key attribute reply-timeout attribute Representational State Transfer (REST) HTTP endpoints, 2^nd HTTP requests request-channel attribute, 2^nd request-destination-name attribute request-payload-type attribute request-pub-sub-domain attribute request-reply messaging, 2^nd requests HTTP DELETE HTTP GET outbound processing inbound requests REST ResequencerParser class resequencers, 7^th and CorrelatingMessage-Handler dinner party example mise en place race conditions similarity to aggregators traveling salesman problem when to avoid reservation cancelling example Resource interface ResponseErrorHandler interface REST. See Representational State Transfer. RestTemplate class Result interface, 2^nd ResultTransformer interface Return Address pattern return type matching RMI. See Remote Method Invocation. RMock. See mocks. rollback() method rollbacks RoundRobinLoadBalancing Router pattern routing messages, 13^th based on XML payload ChannelResolver configuring, 2^nd content-based routers, 2^nd header value routers message router API multiple return values payload-type routers recipient list routers to multiple destinations, 2^nd using SpEL RPC. See Remote Procedure Calls. run() method Runnable interface

S

scanEachPoll flag scanner attribute scatter-gather, 5^th compared to Map-Reduce, 2^nd dinner party example scattering after splitting Scatter-Gather pattern ScheduledFuture interface scheduling, 10^th configuring pollers, 2^nd Cron expressions polling at precise times polling frequency, 2^nd publishing tasks TaskScheduler API timed events, 2^nd search-inbound-channel-adapter, 2^nd SEDA. See staged event-driven architecture. selective processing send() method, 2^nd sendAndReceive() method sending, email messages, 2^nd separation of concerns, 6^th separating flows with wire tap simplifying domain representation, 2^nd wiring, 2^nd. See also loose coupling. SequenceSizeReleaseStrategy class Serializable interface serialization serialization strategy Service Activator pattern service activators and mocks and OSGi and routers, 2^nd chaining converting to channel adapter versus logging-channel-adapter Service Registry, accessing through Eclipse Gemini Blueprint, 2^nd services message-driven, 2^nd replacing without downtime testing using mocks, 2^nd Session interface transactional setAutoCommit() method setService() method shared-database integration compared to other approaches sharing, problems with Short Message Peer-to-Peer Protocol (SMPP), future support for should-delete-messages attribute Simple Mail Transfer Protocol (SMTP) SimpleMessageConverter class SimplePatternFileListFilter class SmartLifecycle interface SMTP. See Simple Mail Transfer Protocol. SOA. See service-oriented architecture. SOAP creating SOAP messages exposing endpoints Spring WS, 2^nd use of HTTP POST Source interface SpEL. See Spring Expression Language. Splitter pattern Spring AOP Spring Batch, 9^th and Spring Integration, 2^nd basics, 2^nd ChunkListener interface FieldSetMapper interface ItemProcessor interface, 2^nd ItemReader interface ItemWriter interface JobExecution class JobExecutionListener interface JobLauncher interface Spring Batch Admin StepListener interface Spring Batch Admin Spring Dynamic Modules (Spring DM). See Eclipse Gemini Blueprint project. Spring Expression Language (SpEL) and Control Bus pattern routing by Spring Framework, support for JMS, 2^nd Spring Social Spring Web Services. See Spring WS. Spring WS, 2^nd, 7^th and channels and inbound gateways and outbound gateways exposing endpoints marshalling support staged event-driven architecture stateful endpoints StepListener stereotypes store-uri attribute streaming, and messaging String payload SubscribableChannel interface, 2^nd, 3^rd, 4^th, 5^th subscribe() method supported-methods attribute synchronous channels system-level coupling, 2^nd

T

TaskExecutor API TaskExecutor interface tasklets TaskScheduler API Template pattern Templates interface test-driven development, 2^nd testing testing and message headers, 2^nd assertions asynchronous systems, 2^nd configuration matching messages, 2^nd messages on output mocks, 2^nd, 3^rd notifications QueueChannel splitting main flow into sub-flows testing logic in XML thread safety to reduce debugging needs unwrapping message pay-loads, 2^nd TextMessage interface thread allocation concerns thread safety ThreadLocal class throttling timed events, 2^nd timeouts, 3^rd explained toJMS channel toMessage() method transaction management, 3^rd problems with sharing transaction management strategies transformations domain-driven, 2^nd inbound email outbound email semantic versus syntactic Transformer interface travel planning example, 2^nd traveling salesman problem Trigger interface TriggerContext interface trip diary editor example incremental writing reading incremental updates Tweet class Twitter, 13^th as publish-subscribe channel adapters channel adapters for direct messages direct messages OAuth configuration receiving messages from timeline receiving retweets, replies, and mentions, 2^nd search, 2^nd updating status TwitterTemplate class, 2^nd, 3^rd type conversion type-level coupling dependency injection unambiguous TypeSafeMatcher class

U

unambiguous type coupling dependency injection undo history UnicastingDispatcher LoadBalancingStrategy unidirectional endpoints, versus bidirectional. See also channel adapters. UNIX, pipes and filters Unmarshaller interface, 2^nd, 3^rd unmarshalling, 2^nd. See also marshalling and unmarshalling. unsubscribe() method UnsupportedOperation-Exception

V

validation, validating XML messages view-name attribute

W

web services, 8^th and inbound gateways and outbound gateways marshalling support SOAP Spring WS, 2^nd Wire Tap pattern, 2^nd, 6^th and message flow transactional flow versus publish-subscribe channel versus recipient list router WorkManager interface

X

XML schemas, 2^nd XmlAdapter class xmpp namespace XMPP. See Extensible Messaging and Presence Protocol. xmpp-connection attribute XmppHeaders.TO XPath namespaces router splitters XSLT

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