EdmiError edmiCreateInstanceContainer(SdaiModel     modelId,
                                       SdaiOptions   options,
                                       SdaiString    name,
                                       SdaiString    description,
                                       SdaiContainer *containerId);

Creates an instance container within an edmModel. Instance containers are used to group a selection of entity instances within the scope of an edmModel. In some connections, the instances contained within an instance container may be treated as one unit of data. Access control may be handled for all instances within the container by setting protection on the container it self. Containers may also be used for checking in and out all their contained instances by checking out the entire instance container. In general terms, an instance container is a data structure for organizing and administrating sets of entity instances of any number and types. There are four types of instance containers.

Plain instance container
Plain instance model container
Lockable instance container
Lockable instance model container.

None of the four instance container types may hold same instance more than once. An instance may not be held by more than one lockable container at the same time. An instance may be simultaneously held by any number of plain instance containers. The plain/lockable instance model containers are extended versions of the plain/lockable instance containers. The extension consists of the attribute POPULATED_FOLDERS. This attribute provides a higher level of internal organization of the entity instances within the instance container. The instances are arranged in entity extents in exactly the same way as the are for models. This provides a built in instance type sorting feature that will eliminate the need for writing type checking software code. Instance containers are represented by a numeric containerId or by a container name. A containerId is unique within the scope of an EDMdatabase. Container names are optional, but when set, they must be unique within the scope of an edmModel.

Arguments

Type	Name	Comment
SdaiModel	modelId	The id of the model in which the instance container shall be created.
SdaiOptions	options	Specifies the type of instance container to create. The options are mutually exclusive. See description of each option below. This parameter is mandatory
SdaiString	name	An optional name of the instance container. A container name must start with a letter. The rest of the name can be any sequence of alphanumeric characters and underscore. Container names are case sensitive.
SdaiString	description	An optional textual description of the purpose of the instance container.
SdaiContainer	containerId	Variable that will receive the containerId that uniquely identifies the created container within the EDMdatabase.

Return Value

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Options

Option	Comment
CONTAINER	Creates a plain instance container.
LOCK_CONTAINER	Creates a lockable instance container.
MODEL_CONTAINER	Creates a plain instance container with an extended representation of its contained instances.
MODEL_LOCK_CONTAINER	Creates a lockable container with an extended representation of its contained instances.

Example

 EdmiError rstat;
 SdaiModel modelId;
 SdaiContainer contId;
 . . .
 if (rstat = edmiCreateInstanceContainer( modelId, LOCK_CONTAINER,
 "FLOOR01", "Check out \ 
 of first floor",  
 &contId)) { 
 printf("\nError %d in edmiCreateInstanceContainer: %s", rstat, 
 edmiGetErrorText(rstat)); 
 goto err; 
 }
 . . .

Arguments

Return Value

Options

Example

See also

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