| <?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/1.0.3/uma.ecore" epf:version="1.0.0" xmi:id="_rUis8LBKEdm7Eph_l9Cn9w" name="refine_architecture,_0gRJgMlgEdmt3adZL5Dmdw" guid="_rUis8LBKEdm7Eph_l9Cn9w" changeDate="2007-03-03T21:40:43.468+0000" version="1.0.0"> |
| <mainDescription><p> |
| This task&nbsp;builds on&nbsp;the work&nbsp;performed during <a class="elementLink" |
| href="./../../openup_basic/tasks/analyze_arch_reqs,_0f-1oMlgEdmt3adZL5Dmdw.html" guid="_0f-1oMlgEdmt3adZL5Dmdw">Analyze |
| the Architectural Requirements</a>&nbsp;to produce a concrete approach for the main development work to follow. |
| </p> |
| <p> |
| The objective is to resolve the overarching issues which affect the design and development activity for the current |
| iteration. These are: |
| </p> |
| <ul> |
| <li> |
| To specify&nbsp;common mechanisms or patterns to be used. |
| </li> |
| <li> |
| To&nbsp;specify what use will be made of existing software assets and how they will integrate with the overall |
| solution. |
| </li> |
| <li> |
| To&nbsp;specify what new software needs to be developed. |
| </li> |
| <li> |
| To ensure that the appropriate hardware and software resources are&nbsp;specified to support the development and |
| testing of the solution. |
| </li> |
| <li> |
| To ensure that the architecture is useful to and used by the project team. |
| </li> |
| </ul> |
| <p> |
| The technical decisions&nbsp;taken as part of this task&nbsp;are concrete and unambiguous. Capture architectural |
| decisions in the <a class="elementLink" |
| href="./../../openup_basic/workproducts/architecture_notebook,_0XAf0MlgEdmt3adZL5Dmdw.html" |
| guid="_0XAf0MlgEdmt3adZL5Dmdw">Architecture Notebook</a>. Make sure that this is communicated across the team. |
| </p> |
| <p> |
| This task is applied iteratively; iterations after the first will need to take account of the <a class="elementLink" |
| href="./../../openup_basic/workproducts/design,_0WuL8slgEdmt3adZL5Dmdw.html" |
| guid="_0WuL8slgEdmt3adZL5Dmdw">Design</a>&nbsp;and <a class="elementLink" |
| href="./../../openup_basic/workproducts/build,_0YuXEMlgEdmt3adZL5Dmdw.html" |
| guid="_0YuXEMlgEdmt3adZL5Dmdw">Build</a>&nbsp;products that have been developed so far. |
| </p></mainDescription> |
| <keyConsiderations><p> |
| The architect should perform this task&nbsp;through collaboration with the whole&nbsp;team to promote consensus and a |
| common understanding of the overall solution. The architect should be working to coordinate and guide the technical |
| activities of the team, rather than seeking to do all the work alone.&nbsp;The architect should place emphasis&nbsp;on |
| involving&nbsp;the developer(s) throughout this task. |
| </p></keyConsiderations> |
| <sections xmi:id="_P28vkMP3EdmWKcx6ixEiwg" name="Identify architectural priorities" guid="_P28vkMP3EdmWKcx6ixEiwg"> |
| <sectionDescription><p> |
| Determine&nbsp;the&nbsp;priorities for this iteration of&nbsp;architecture work.&nbsp;Balance the objectives for the |
| current iteration against the overall project objectives, ensuring that the architecture can support current and future |
| needs. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_0qoQ8CikEduQBKSg5n118w" name="Refine architectural mechanisms" guid="_0qoQ8CikEduQBKSg5n118w"> |
| <sectionDescription><p> |
| Refine&nbsp;each architectural mechanism into a <a class="elementLink" |
| href="./../../openup_basic/guidances/concepts/design_mechanism,_w2ACwA4LEduibvKwrGxWxA.html" |
| guid="_w2ACwA4LEduibvKwrGxWxA">Design Mechanism</a> by looking at the requirements in the context of the current |
| iteration. Include each architecturally significant&nbsp;scenario in scope. Look for commonality across scenarios and |
| propose common components and patterns for their solution. Work with the developers and analysts&nbsp;to gain consensus |
| on&nbsp;the architecture mechanisms. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_QtKuoCilEduQBKSg5n118w" name="Identify business patterns" guid="_QtKuoCilEduQBKSg5n118w"> |
| <sectionDescription><p dir="ltr" style="MARGIN-RIGHT: 0px"> |
| The architecture of the system can often be best&nbsp;communicated by showing how it handles important areas business |
| behaviour. |
| </p> |
| <p dir="ltr" style="MARGIN-RIGHT: 0px"> |
| See <a class="elementLink" href="./../../openup_basic/guidances/concepts/business_pattern,_Z53x0BapEduSTJywppIxVQ.html" |
| guid="_Z53x0BapEduSTJywppIxVQ">Business Pattern</a>. Work with the stakeholders to assure the business patterns are |
| based on&nbsp;sound knowledge. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_Vdln8MP3EdmWKcx6ixEiwg" name="Identify reuse opportunities" guid="_Vdln8MP3EdmWKcx6ixEiwg"> |
| <sectionDescription><p dir="ltr" style="MARGIN-RIGHT: 0px"> |
| Leverage reuse of existing components by evaluating their interfaces and the behavior that they provide. Reuse |
| components when their interfaces are similar or match the interfaces of components you would need to develop from |
| scratch. If not similar, modify the newly identified interfaces so you improve the fit with existing components |
| interfaces. |
| </p> |
| <p dir="ltr" style="MARGIN-RIGHT: 0px"> |
| Work with developers to gain consensus on the suitability of using existing components. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_G_k1kBaqEduSTJywppIxVQ" name="Identify architecturally significant design elements" guid="_G_k1kBaqEduSTJywppIxVQ"> |
| <sectionDescription><p align="left"> |
| Refine the key abstractions to decide on the important design elements (such as classes and&nbsp;subsystems)&nbsp;that |
| make up the architecture, and provide at least a name and brief description for each. Add them to the <a |
| class="elementLink" href="./../../openup_basic/workproducts/design,_0WuL8slgEdmt3adZL5Dmdw.html" |
| guid="_0WuL8slgEdmt3adZL5Dmdw">Design</a>. Gain consensus with the developers on architecturally significant design |
| choices. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_xIIVkMUbEdu5GrwIlTJV7g" name="Map the software to the hardware" guid="_xIIVkMUbEdu5GrwIlTJV7g"> |
| <sectionDescription>Map the architecturally significant design elements to the target deployment environment. Work with hardware and network |
| specialists to ensure that the hardware is sufficient to meet the needs of the system; and that any new hardware is |
| available in time.</sectionDescription> |
| </sections> |
| <sections xmi:id="_LsyLkBaqEduSTJywppIxVQ" name="Define development architecture and test architecture" guid="_LsyLkBaqEduSTJywppIxVQ"> |
| <sectionDescription><p> |
| Ensure that the development and test architectures are defined.&nbsp;Note any architecturally significant differences |
| between these environments and work with the team to devise strategies to mitigate any risks these may introduce. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_Zlw-QMP3EdmWKcx6ixEiwg" name="Validate the architecture" guid="_Zlw-QMP3EdmWKcx6ixEiwg"> |
| <sectionDescription><p> |
| Verify that the architecture decisions are appropriate for their purpose.&nbsp; |
| </p> |
| <p> |
| Development work should be performed to&nbsp;produce a&nbsp;<a class="elementLink" |
| href="./../../openup_basic/workproducts/build,_0YuXEMlgEdmt3adZL5Dmdw.html" guid="_0YuXEMlgEdmt3adZL5Dmdw">Build</a> |
| that shows that the software architecture is viable. This should provide the definitive basis for validating the |
| suitability&nbsp;of the architecture.&nbsp;As the software&nbsp;should be developed iteratively, more than one |
| increment of the build may be required to prove the architecture.&nbsp;During the early stages of the project (up to |
| the end of <a class="elementLinkWithUserText" |
| href="./../../openup_basic/deliveryprocesses/elaboration_phase_iteration,_0Spa4BOKEduCNqgZdt_OaA.html" |
| guid="_0Spa4BOKEduCNqgZdt_OaA">Elaboration</a>), it may be&nbsp;acceptable for the software to have a incomplete or |
| prototypical feel, as it&nbsp;will be&nbsp;primarily concerned with baselining the architecture to provide a stable |
| foundation for the&nbsp;<a class="elementLinkWithUserText" |
| href="./../../openup_basic/deliveryprocesses/construction_phase_iteration,_3CqrAROKEduCNqgZdt_OaA.html" |
| guid="_3CqrAROKEduCNqgZdt_OaA">Construction</a> phase. |
| </p></sectionDescription> |
| </sections> |
| <sections xmi:id="_aRCI0MP3EdmWKcx6ixEiwg" name="Communicate decisions" guid="_aRCI0MP3EdmWKcx6ixEiwg"> |
| <sectionDescription><p> |
| Ensure that those who need to act upon the architectural work&nbsp;understand&nbsp;it and are able to work with |
| it.&nbsp;Make sure that the description of the architecture clearly conveys not only the solution but also the |
| motivation and objectives related to the&nbsp;decisions that have been made in shaping the architecture. This will make |
| it easier for others to understand the architecture and to adapt it over time. |
| </p></sectionDescription> |
| </sections> |
| <purpose><p> |
| Provide a skeletal design to enable more&nbsp;comprehensive design activities to be performed coherently by the team. |
| </p></purpose> |
| </org.eclipse.epf.uma:TaskDescription> |