Remoting patterns

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Lifecycle Handling and Identification • Axis supports the following lifecycle patterns using a scope option chosen in the deployment descriptor • Per-Request Instance: Default, “request” scope • Static instance: “application” scope • Client-dependent instance: “session” scope, • Sessions are supported either by HTTP cookies or by - communication protocol independent - SOAP headers • Each session object has a timeout (which can be set to a certain amount of milliseconds). After the timeout expires, the session is invalidated. A method touch can be invoked on the session object, which re-news the lease. 132 Uwe Zdun, Markus Voelter, Michael Kircher - Remoting Patterns.
Client-Side Asynchrony • Axis does not support client-side asynchrony patterns without using a messaging protocol • Simple Asynchronous Invocation Framework for Web Services (SAIWS) • Asynchrony layer on top of synchronous invocation layer provided by Axis • http://saiws.sourceforge.net 133 Uwe Zdun, Markus Voelter, Michael Kircher - Remoting Patterns.
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Remoting Patterns Uwe Zdun, Markus
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Patterns and Pattern Languages 3 Uw
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Elements of a Pattern • Name •
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From Patterns to Pattern Languages
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Distributed Systems: Application Ar
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Distributed Systems: Challenges •
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Remoting Styles • There are syste
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Remoting Patterns • Numerous proj
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Pattern: Broker (2) Process A Proce
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Server Application • Remote objec
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Basic Remoting Patterns INTERFACE D
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Pattern: Requestor (2) Process A Pr
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Pattern: Client Proxy (2) Process A
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Pattern: Invoker (2) Process A2 Cli
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Pattern: Server Request Handler (2)
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Pattern: Client Request Handler (2)
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Pattern: Marshaller (2) Client Proc
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Pattern: Interface Description (2)
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Pattern: Remoting Error (2) Process
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Interactions: Client-Side Invocatio
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Interactions: Remoting Error Propag
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Identification Patterns Client look
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Pattern: Object ID (2) Process A1 C
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Pattern: Absolute Object Reference
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Pattern: Lookup (2) Process C Proce
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Interactions: Marshalling of Absolu
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Lifecycle Management Patterns SERVE
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Pattern: Static Instance (2) Proces
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Pattern: Per-Request Instance (2) P
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Pattern: Client-Dependent Instance
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Pattern: Lazy Acquisition (2) Proce
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Pattern: Pooling (2) Process A Clie
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Pattern: Leasing (2) Process A Clie
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Pattern: Passivation (2) Process A
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Interactions: Per-Request Instance
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Interactions: Leased Creation Clien
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Interactions: Passivation Invoker i
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Extension Patterns Client CLIENT PR
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Pattern: Invocation Interceptor (2)
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Pattern: Invocation Context (2) Pro
Page 81 and 82: Pattern: Protocol Plug-In (2) Proce
Page 83 and 84: Interactions: Server-Side Security
Page 85 and 86: optimizes resource consumption upda
Page 87 and 88: Pattern: Lifecycle Manager (2) 2a)
Page 89 and 90: Pattern: Configuration Group (2) Se
Page 91 and 92: Pattern: Local Object (2) Server Pr
Page 93 and 94: Pattern: QoS Observer (2) 1) Serve
Page 95 and 96: Pattern: Location Forwarder (2) Pro
Page 97 and 98: Invocation Asynchrony Patterns 97 U
Page 99 and 100: Pattern: Fire and Forget • Contex
Page 101 and 102: Pattern: Sync with Server • Conte
Page 103 and 104: Pattern: Poll Object • Context: 1
Page 105 and 106: Pattern: Result Callback • Contex
Page 107 and 108: Pattern: Message Queue • Context:
Page 109 and 110: Relations among the Patterns Acknow
Page 111 and 112: Interactions: Sync with Server Clie
Page 113 and 114: Interactions: Result Callback Clien
Page 115 and 116: Technology Projections 115 Uwe Zdun
Page 117 and 118: CORBA Technology Projection Name Se
Page 119 and 120: Web Services • Definition: • A
Page 121 and 122: Dynamic Invocation on Server Side O
Page 123 and 124: Constructing an Invocation with a R
Page 125 and 126: Marshalling • Conversion to SOAP
Page 127 and 128: Message Processing (2) Client Clien
Page 129 and 130: Example: Log Handler public class L
Page 131: Protocol Integration • Heterogene
Page 135 and 136: SAIWS - Invocation Handlers AsyncRe
Page 137 and 138: SAIWS - Example: Result Callback In
Page 139 and 140: Other Web Service Frameworks Discus
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