| <?xml version="1.0" encoding="UTF-8"?> |
| <org.eclipse.epf.uma:TaskDescription xmi:version="2.0" |
| xmlns:xmi="http://www.omg.org/XMI" xmlns:org.eclipse.epf.uma="http://www.eclipse.org/epf/uma/1.0.5/uma.ecore" |
| xmlns:epf="http://www.eclipse.org/epf" epf:version="1.5.0" xmi:id="_qDRSULBKEdm7Eph_l9Cn9w" |
| name="analyze_architecture,_0f-1oMlgEdmt3adZL5Dmdw" guid="_qDRSULBKEdm7Eph_l9Cn9w" |
| changeDate="2007-05-11T05:30:38.765-0700" version="1.0.0"> |
| <mainDescription><p>
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| 
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| This task focuses on identifying the architectural goals for an iteration that will guide development and testing. It
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| relies on gathering experience gained in similar systems or problem domains to constrain and focus the architecture so
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| 
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| that effort is not wasted in re-inventing architecture.
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| 
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| 
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| </p></mainDescription> |
| <sections xmi:id="_3nMQQA3rEduibvKwrGxWxA" name="Identify architectural goals" guid="_3nMQQA3rEduibvKwrGxWxA"> |
| <sectionDescription><p>
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| Work with the team, especially the <a class="elementLink" href="./../../openup/roles/stakeholder_9FFD4106.html" guid="_dTa6gMAYEdqX-s4mWhkyqQ">Stakeholder</a> and <a class="elementLink" href="./../../openup/roles/analyst_39D7C49B.html" guid="_0VxJsMlgEdmt3adZL5Dmdw">Analyst</a>, to describe the remaining
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| goals for the architecture and identify which ones are appropriate to address for this iteration. Examine the product
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| <a class="elementLink" href="./../../openup/guidances/checklists/vision_E1FE2A1F.html" guid="_0WoFUMlgEdmt3adZL5Dmdw">Vision</a>&nbsp;and requirements. These goals will prioritize and guide&nbsp;the
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| approach to important&nbsp;technical decisions.
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| </p>
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| <p>
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| It will be important to regularly review the status of these goals throughout the project to&nbsp;make sure&nbsp;that
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| they are still valid and that the system is on track to deliver them.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_b-ueYNvOEduv2KOT-Teh6w" name="Identify architecturally significant requirements" |
| guid="_b-ueYNvOEduv2KOT-Teh6w"> |
| <sectionDescription><p>
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| Identify which of the current requirements are architecturally significant.&nbsp;Explore and refine those&nbsp;that
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| must be implemented in order to realize the architectural goals for the current iteration. See <a class="elementLinkWithType" href="./../../openup/guidances/concepts/architecturally_significant_requirements_1EE5D757.html" guid="_HrZGIA4MEduibvKwrGxWxA">Concept: Architecturally Significant Requirements</a>&nbsp;and&nbsp;<a class="elementLinkWithType" href="./../../openup/guidances/guidelines/determine_architecturally_significant_requirements_817DFD9B.html" guid="_D3JXMNvKEduv2KOT-Teh6w">Guideline: Determine Architecturally Significant Requirements</a>&nbsp;for more
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| information.
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| </p>
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| <p>
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| Reference the architecturally significant requirements in the <a class="elementLink" href="./../../openup/workproducts/architecture_notebook_9BB92433.html" guid="_0XAf0MlgEdmt3adZL5Dmdw">Architecture Notebook</a>&nbsp;after they are identified. It will be important to review this list regularly in line with changes to
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| requirements to make sure that they are still valid.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_9o6Z4CSCEdqDjNgZyGMf5w" name="Identify constraints on the architecture" |
| guid="_9o6Z4CSCEdqDjNgZyGMf5w"> |
| <sectionDescription><p>
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| List any constraints on the architecture and any trade-offs between competing requirements and resources. Decide how
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| the architecture will meet these issues. Justify each of the decisions made and capture this information. Regularly
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| review the list of constraints to make sure that they are still valid and that no new ones have appeared.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_B899cMP2EdmWKcx6ixEiwg" name="Survey, assess and select available assets" |
| guid="_B899cMP2EdmWKcx6ixEiwg"> |
| <sectionDescription><p>
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| Identify assets from other areas that may be reused in the current architecture. These could include:
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| </p>
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| <ul>
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| <li>
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| Architectural frameworks
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| </li>
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| <li>
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| Architectural mechanisms
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| </li>
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| <li>
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| Architectural decisions
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| </li>
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| <li>
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| Constraints
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| </li>
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| <li>
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| Applications
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| </li>
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| <li>
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| Components
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| </li>
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| <li>
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| COTS software&nbsp;
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| </li>
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| </ul></sectionDescription> |
| </sections> |
| <sections xmi:id="_FVrlsMP2EdmWKcx6ixEiwg" name="Define approach for structuring the system" |
| guid="_FVrlsMP2EdmWKcx6ixEiwg"> |
| <sectionDescription><p>
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| Decide how to structure&nbsp;the software, both in logical and physical terms. As a minimum, decide on:
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| </p>
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| <ul>
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| <li>
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| How to partition the software when managing development (the use of layering as a partitioning strategy, for
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| example).
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| </li>
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| <li>
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| How the software will be composed at run time.
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| </li>
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| </ul>
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| <p>
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| For each software partition, briefly describe
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| </p>
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| <ul>
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| <li>
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| Their name and purpose.
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| </li>
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| <li>
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| Their relationships to other partitions.
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| </li>
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| </ul>
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| <p>
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| These decisions will form the basis for structuring the <a class="elementLink" href="./../../openup/workproducts/design_D677D182.html" guid="_0WuL8slgEdmt3adZL5Dmdw">Design</a>&nbsp;and the <a class="elementLink" href="./../../openup/workproducts/build_95D7D8FD.html" guid="_0YuXEMlgEdmt3adZL5Dmdw">Build</a>.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_tmvWwE5cEducxZ_XZXh-vw" name="Define approach for deploying the system" |
| guid="_tmvWwE5cEducxZ_XZXh-vw"> |
| <sectionDescription><p>
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| Outline how the software will deploy over the nodes on the network. Work with stakeholders such as network support and
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| deployment teams to ensure that the proposed approach is a good fit for the wider technical environment.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_KBAsYMP2EdmWKcx6ixEiwg" name="Identify architectural mechanisms" |
| guid="_KBAsYMP2EdmWKcx6ixEiwg"> |
| <sectionDescription><p>
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| Make a list of the&nbsp;technical services that the system needs to provide and capture some basic information about
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| each item on the list. It's generally a good idea to make an initial&nbsp;list of all the mechanisms required for the
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| project and then prioritize the development of those that need to be&nbsp;delivered to achieve the goals of the current
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| iteration. See <a class="elementLinkWithType" href="./../../openup/guidances/concepts/arch_mech_2932DFB6.html" guid="_mzxI0A4LEduibvKwrGxWxA">Concept: Architectural Mechanism</a>&nbsp;to&nbsp;understand what architecture
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| mechanisms are and how to describe them. See <a class="elementLinkWithType" href="./../../openup/guidances/guidelines/architectural_mechanisms_62CFB6B7.html" guid="_J6BKgNvIEduv2KOT-Teh6w">Guideline: Architectural Mechanisms</a> to understand how to develop them. See <a class="elementLinkWithType" href="./../../openup/guidances/guidelines/outline_the_architecture_35F1530A.html" guid="_42UD4A3tEduibvKwrGxWxA">Guideline: Outline the Architecture</a> for perspectives and issues to consider when
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| defining the architecture.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_I32E4MP2EdmWKcx6ixEiwg" name="Identify key abstractions" guid="_I32E4MP2EdmWKcx6ixEiwg"> |
| <sectionDescription><p>
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| Identify the key abstractions that the system needs to handle. These can usually be found&nbsp;by looking for nouns
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| that the requirements emphasize or repeat, because they help identify what is important to the business. The <a class="elementLink" href="./../../openup/workproducts/glossary_5D300778.html" guid="_Wn7HcNcEEdqz_d2XWoVt6Q">Glossary</a>
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| is also a useful source for key abstractions as it is itself a list of business nouns. Not all nouns will be key
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| abstractions in the system though, so work with the <a class="elementLink" href="./../../openup/roles/analyst_39D7C49B.html" guid="_0VxJsMlgEdmt3adZL5Dmdw">Analyst</a> and <a class="elementLink" href="./../../openup/roles/stakeholder_9FFD4106.html" guid="_dTa6gMAYEdqX-s4mWhkyqQ">Stakeholder</a>&nbsp;as they will
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| have knowledge and materials that are relevant to this step.
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| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_dzP6kNvPEduv2KOT-Teh6w" name="Verify architectural consistency" |
| guid="_dzP6kNvPEduv2KOT-Teh6w"> |
| <sectionDescription>The Architect works with the <a class="elementLink" href="./../../openup/roles/developer_C633AB7.html" guid="_0YDosMlgEdmt3adZL5Dmdw">Developer</a> and <a class="elementLink" href="./../../openup/roles/project_manager_E657F936.html" guid="_0a0o0MlgEdmt3adZL5Dmdw">Project Manager</a> to verify that
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| the architecture is consistent with the requirements; and that the descriptions of the architecture are complete,
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| meaningful, and clear.</sectionDescription> |
| </sections> |
| <sections xmi:id="_xTdYACGAEdqk6N_Ot_YEvA" name="Capture architectural decisions" |
| guid="_xTdYACGAEdqk6N_Ot_YEvA"> |
| <sectionDescription><p>
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| Capture&nbsp;important decisions about the architecture for future reference. Consider using the templates provided for
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| the <a class="elementLink" href="./../../openup/workproducts/architecture_notebook_9BB92433.html" guid="_0XAf0MlgEdmt3adZL5Dmdw">Architecture Notebook</a>. <a class="elementLink" href="./../../openup/roles/developer_C633AB7.html" guid="_0YDosMlgEdmt3adZL5Dmdw">Developer</a>s in particular should
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| clearly understand the current state of the architecture each iteration before developing the architecture.
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| </p></sectionDescription> |
| </sections> |
| <keyConsiderations><p>
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| This task&nbsp;is most beneficial when developing new and unprecedented systems. In systems where there is already a
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| well-defined architecture, this task might be omitted, or performed quickly as a&nbsp;review of the existing
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| architecture.
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| 
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| </p>
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| <p>
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| It is critical that this task is performed collaboratively with active involvement of other team members and project
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| 
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| stakeholders so that consensus and common understanding is reached. It is particularly vital for the architect to
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| 
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| 
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| involve the developer(s) throughout this task. The architecture effort&nbsp;is about providing leadership and
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| 
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| coordination of the technical work rather than putting in a solo performance.
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| </p></keyConsiderations> |
| <purpose>To provide sufficient guidance and direction for the team to begin or continue evolving the architecture.</purpose> |
| </org.eclipse.epf.uma:TaskDescription> |