THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The WSDL 2.0 Extensions spec defines a Message Exchange Pattern (MEP) as: "the sequence and cardinality of abstract messages listed in an operation." JBI uses this concept to define interactions between two nodes: the consumer node, and the provider node. The pattern is defined in terms of message type (normal or fault), and message direction. MEPs always reflect the provider's point of view. For example, in a request-response interaction, the MEP is in-out, which reflects the flow of messages as seen by the provider. From the consumer's perspective, the direction of message flow is reversed, but the MEP used by the NMR in its interactions with the consumer will always reflect the provider's perspective. This is a conventional practice when dealing with WSDL MEPs.
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If you want to see how a component is used in the examples shipping with ServiceMix, try such a Google Codesearch to find out wich sample uses the component. It's a lot faster than looking on the local hard drive unless you use a specialised desktop search engine. |
Below is a matrix of ServiceMix components and the JBI MEPs supported by each.
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Reflection | LW SE | The Reflection API represents, or reflects, the classes, interfaces, and objects in the current Java Virtual Machine. This API is handy if you are writing developement tools such as debuggers, class browsers, and GUI builders. | Consumer | In-Only | o.a.s.components.reflection.proxyIntOnlyBinding |
Reflection cont'd | LW SE |
| Consumer | In-Out | o.a.s.components.reflection.proxyIntOutBinding |
RSS | LW BC | Support via Rome library for accessing and processing RSS Feeds. | Consumer | In-Only |
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RSS cont'd | LW BC | feedwriter prov in-only | Provider | In-Only |
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SAAJ | LW BC | SAAJ is for Soap With Attachments and Apache Axis support | Provider | In-Out |
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Scripting | LW SE | A component to allow any JSR 223 compliant scripting engine to be used to easily create a component , perform a transformation, or be an expression language. | Provider | In-Only or In-Out depending on the Groovy Script sent to the Groovy SE. |
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servicemix-bpe | JBI SE | WSDL 2.0 Adjuncts defines pre-defined extensions for WSDL 2.0, including MEPS, operation styles, and binding extensions. | Consumer / Provider | All MEPs supported. |
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servicemix-eip | JBI SE | A routing container where different routing patterns can be deployed as services unit. Based on the EIP Patterns book. | Consumer / Provider | n.a. |
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JBI BC | HTTP binding | Consumer / Provider | In-Only / In-Out |
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JBI BC | JMS binding | Consumer / Provider | In-Only / In-Out |
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JBI SE | Hosts annotated POJOs | Provider | In-Only / In-Out |
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JBI SE | Hosts lighweight components | n.a. | n.a. |
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JBI SE | Container for SCA modules | Consumer / Provider |
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JBI SE | WS-Notification | Consumer / Provider | n.a. |
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JBI SE | EIP patterns | Consumer / Provider | n.a. |
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JBI BC | Mail binding | Consumer / Provider | In-Only / In-Out |
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JBI SE | OSWorkflow | Consumer | n.a. |
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JBI SE | Spring dynamic languages engine | Consumer | n.a. |
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JBI SE | JSR-223 scripting engine | Consumer | n.a. |
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JBI BC | SNMP binding | Consumer | In-Only |
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JBI SE | xml validation engine | Consumer | n.a. |
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JBI BC | VFS binding | Consumer / Provider | In-Only |
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StreamWriterComponent | LW SE | Similar to TraceComponent, writes content of input message to the stream requested. | Provider | In-Only |
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TraceComponent | LW SE | Logs output to console | Provider | In-Only |
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Validation | LW SE | For schema validation of documents using Java API for XML Processing (JAXP 1.3) and XMLSchema (http://www.w3.org/XML/Schema) or RelaxNG - a schema language for XML (http://relaxng.org/). If the inputted XML is validated as okay, the same XML is sent back. If there is an error a fault is returned to the sender. | Mixed | As the Provider, the MEP is In-Only, as the consumer it is also In-Only. This component can also have an In-Out exchange pattern, which is the main pattern for this component. |
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VFS | LW BC | VFS via the Jakarta Commons Net library which provides access to file systems, jars/zips/bzip2, temporary files, WebDAV, Samba (CIFS), HTTP, HTTPS, FTP, and SFTP among others. |
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VFS cont'd | LW BC | FilePoller | Consumer | In-Only |
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VFS cont'd | LW BC | FileWriter | Provider | In-Only |
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WSIF | LW BC | WSIF for integration with the Apache Web Service Invocation Framework (WSIF) | Provider | In-Only |
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XFire | LW |
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XPath Routing | LW SE | Used to perform content based routing in an ESB. This means you route messages around your service bus based on the message properties of the content of the message. When integrating systems accross language boundries its common to use XML as a universal message format; so XPath is an ideal tool to perform content based routing and transformation. | Mixed | Recieves an In-Only exhange and sends an In-Only message to another component. |
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XSLT | LW SE | The XsltComponent will preform an XSLT transformation of an inbound Normalized Message and generate an output message as a Normalized Message. | Mixed | MEP is In-Only, as the consumer it is also In-Only. This Component can also have an In-Out exchange pattern, which is the main pattern for this component. |
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XSQL | LW BC |
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