基于UML的软件体系结构设计(课件)

Architectural Mechanisms can be treated as patterns (i.e., stereotyped parameterized collaboration)
Template Parameters
Pattern Name
Structural Aspect
Behavioral Aspect
(from java.sql)
(from java.sql)
Connection
(from java.sql)
getString() : string
executeQuery(sql : String) : ResultSet executeUpdate(sql : String) : int
createStatement() : Statement
System integrators Performance Scalability Throughput
Deployment View
System engineering System topology Delivery, installation communication
The Logical View is an “architecturally significant” slice of the Design Model
Glossary
Supplementary Specifications Design Guidelines
Software Architecture Document
Design Guidelines
Analysis Classes
Architectural Design
Design Model Design Model
The criteria used to access data for the persistent class
returns a Statement
1.2. executeQuery(string)
The SQL statement built by the DBClass using the given criteria is passed to executeQuery() Create a list to hold all retrieved data 1.4. new()
: PersistencyClient : DBClass : PersistentClass : Connection : Statement
1. create( )
1.1. New() 1.2. getData( )
1.3. createStatement( )
1.4. executeUpdate(String)
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Example: Persistency: RDBMS: JDBC: Initialize
: DBClass : DriverManager
1. getConnection(url, user, pass)
14
Example: Persistency: RDBMS: JDBC: Create
4
Architectural Design Topics
Key Concepts Design and Implementation Mechanisms Design Classes and Subsystems Reuse Opportunities Design Model Organization Checkpoints
Architectural Design
基于UML的软件体系结构设计 孙知信
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Objectives: Architectural Design
Understand the purpose of Architectural Design and where in the lifecycle it is performed Explain what Design and Implementation Mechanisms are and how they map from Analysis Mechanisms Understand what subsystems and interfaces are and what role they play in the architecture Describe the process for identifying interfaces and subsystems Understand the rationale and considerations that support the architectural decisions
(from SamplePersistentClass)
getData() setData() command() new()
DriverManager
(from java.sql)
1
getConnection(url, user, pass) : Connection
Statement ResultSet
1.5. getString( ) 1.6. setData( ) 1.7. add(PersistentClass)
called for each attribute in the class
Add the retrieved course offering to the list to be returned
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Example: Persistency: RDBMS: JDBC: Update
: PersistencyClient : DBClass : PersistentClass : Connection : Statement
1. update(PersistentClass) 1.1. getData( ) 1.2. createStatement( ) execute SQL statement 1.3. executeUpdate(string)
Key Concepts Design and Implementation Mechanisms Design Classes and Subsystems Reuse Opportunities Design Model Organization Checkpoints
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Class Name
What is a package?
A general purpose mechanism for organizing elements into groups A model element which can contain other model elements
Package Name
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Global Packages
Certain packages are used by all other packages These packages are marked global
Foundation
Classes
global
9
Architectural Design Topics
2
Architectural Design in Context
Architectural Analysis Review the Architecture Architecture Reviewer
Architect
Describe Architectural Concurrency Design
Design and Implementation Mechanisms
Analysis Design ImplConceptual)
Mechanism
(Concrete)
Legacy Data
Mechanism
(Actual)
Persistency
RDBMS
<<role>> DBClass
<<role>> PersistentClassList
(from SamplePersistentClass)
new() add(c: PersistentClass) 1
0..* create() : PersistentClass read(searchCriteria : string) : PersistentClassList update(c : PersistentClass) delete(c : PersistentClass) 1 <<role>> PersistentClass
Documented in Design Guidelines
12
Example: Persistency: RDBMS: JDBC
<<role>> PersistencyClient
(from SamplePersistency Client)
Roles to be filled by the designer applying the mechanism
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Example: Persistency: RDBMS: JDBC: Delete
: PersistencyClient : DBClass : Connection : Statement
New Data
JDBC
Persistency
OODBMS
ObjectStore
Distribution Analysis
Remote Method Invocation (RMI) Design
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Java 1.2 from Sun Implementation