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Figure 3-3 DAIS type IDL in UML//File DAISType.idl#ifndef _DAIS_TYPE_IDL#define _DAIS_TYPE_IDL#pragma prefix "omg.org"#include "DAISCommon.idl"module DAIS {module Type {struct Description {ResourceIDResourceIDstringstringResourceIDs};typedef sequence<Description>interface Iterator{boolean next_n (in unsigned longout Descriptions); |
|||||
| id; | |||||
| schema; | |||||
| label; | |||||
| descrip; | |||||
| aggregated_types; | |||||
| Descriptions; | |||||
| n, | |||||
| types | |||||
void reset();Iterator clone();void destroy();
};
interface IHome { exception UnknownResourceID {string reason;};
Description find (in ResourceID type) raises (UnknownResourceID);
Iterator find_by_schema ( in ResourceID schema
) raises (UnknownResourceID); };};}; #endif // _DAIS_TYPE_IDL
Description
A struct describing a type.
| Member | Description | ||||
| id | The identification of this type. | ||||
| schema | The identification of the schema where the type is defined. | ||||
| label | The label of the type. | ||||
| descrip | A description of the type. | ||||
| aggregated_types | A sequence of type identifications that a node of this type may contain. This information is intended as a guide when the type filter is specified for the find_by_type() methods. |
IHome
An object used to browse the types. There is no corresponding interface in OPC.
UnknownResourceID
An exception telling that the ResourceID is unknown. The likely reason behind this exception is some misunderstanding between
the server and client code due to a programming error.
find()
For a given type, return information about that type.
Parameter |
Description |
||||
| type | A type identification. | ||||
| return | The type description. |
find_by_schema()
For a given schema, find all types defined by that schema.
Parameter |
Description |
||||
| schema | The identification of the schema. | ||||
| return | A sequence of type descriptions. |