| DESIGN PATTERNS
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Background
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Design Patterns
systematically name, motivate, and explain a general
solution that addresses a recurring problem. They capture
the full implementation of advanced features and
behaviors of objects in the application. Developers
attach design patterns to objects declaratively. They can
be attached to any repository object, including:
- business objects
- properties
- middle-tier objects
- windows
- buttons, etc.
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| Benefits
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There are numerous benefits
to using design patterns some of which are the reuse
of component and the declarative
approach to building applications. Developers
attach design patterns to objects then everything is
taken care of, i.e. changes to the physical model, to
related objects, to the middle-tier, to transaction
processing, to the presentation layer, and so on, to
fully and correctly implement the feature.
Design patterns can be added or removed at any stage.
This lets the developer try out different functional or
visual presentations--all without writing a line of code.
Design patterns are technology-independent which means
that you can re-engineer the application to new
architectures and technologies without losing any of your
components.
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| Collection
of Design Patterns
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OmniSphere has an extensive
collection of design patterns which are used to capture
business requirements, design decisions, implementation
specifics and application behaviour. |
| Example of
Hierarchy Design Pattern
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If you wanted to present
your data in a graphical format within a tree structure,
i.e., you want to show the reporting structure within an
organization).
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| All aspects of processing is
managed |
After attaching the hierarchy
design pattern to the business object (i.e.
Organization), all aspects of hierarchical processing and
display will be managed automatically, including:
- managing of the parent-child relationship, the
level numbering and ordering
- ability to move branches within the tree
- creation of siblings and children
- adding services to the windows to manage the
creation of new records
- display of the data in a tree control with
expansion/collapse of nodes
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| Developing Design Patterns |
Design patterns are modeled as regular
objects and can have properties, services, events,
methods and behaviours. They can also be custom
programmed by the developer in any object-oriented
language. Our design patterns is completely accessible
to the developer to understand, copy and modify as
needed. Developers can also use published design
patterns.
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