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Collection is the main collection Class used by all elements within the Automation Interface. It contains methods to iterate through the collection, refresh the collection and delete an item from the collection.It is important to realize that when the 'AddNew' function is called, the item is not automatically added to the current collection. The typical steps are:
- Call AddNew to add a new item
- Modify the item as required
- Call Update on the item to save it to the database
- Call Refresh on the collection to include it in the current set
Delete is the same; until Refresh is called, the collection still contains a reference to the deleted item, which should not be called.
Each method can be used to iterate through the collection for languages that support this type of construct.
Collection Attributes
Attribute |
Remarks |
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Count |
Short Notes: Read only The number of objects referenced by this list. |
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ObjectType |
ObjectType Notes: Read only Distinguishes objects referenced through a Dispatch interface. |
ObjectType |
Collection Methods
Method |
Remarks |
See also |
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AddNew(string Name, string Type) |
Object Notes: Adds a new item to the current collection. The interface is the same for all collections; you must provide a Name and Type argument. What these arguments are used for depends on the actual collection being accessed. For example, when adding a new element to the Elements collection, the Type string can be either a basic UML element type or a fully qualified element type (stereotype) defined by a profile, such as SysML::Requirement, differentiating it from a standard requirement. Also note that you must call Update() on the returned object to complete the AddNew function. If Update() is not called the object is left in an indeterminate state. When an error occurs an exception will be thrown, including when the user does not have Security permission to modify the specify type. Parameters:
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The AddNew Function |
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Delete(short index) |
Void Notes: Deletes the item at the selected reference. Parameters:
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DeleteAt(short index, boolean Refresh) |
Void Notes: Deletes the item at the selected index. The second parameter is currently unused. Parameters:
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GetAt(short index) |
Object Notes: Retrieves the array object using a numerical index. If the index is out of bounds, an error occurs. Parameters:
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GetByName(string Name) |
Object Notes: Gets an item in the current collection by name. Supported for Model, Package, Element, Diagram and element TaggedValue collections. If the collection does not contain any items (or, for the Tagged Value collection, if the collection contains items but the method cannot locate an object with the specified name) the method returns a null value. For other collections, if the method is unable to find an object with the specified name, it raises an exception. Parameters:
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Package Class Element Class Diagram Class TaggedValue Class |
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GetLastError() |
String Notes: Returns a string value describing the most recent error that occurred in relation to this object. |
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Refresh() |
Void Notes: Refreshes the collection by re-querying the model and reloading the collection. Should be called after adding a new item or after deleting an item. |
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Update() |
Boolean Notes: Updates the current Collection object after modification or appending a new item. If False is returned, check the 'GetLastError()' function for more information. |