CN103399731B - The application process of FED file based on HLA distributed interactive system - Google Patents

Abstract

The present invention relates to transmission and IP distributed interactive system communication technical field, be specifically related to the application process of a kind of FED file based on HLA distributed interactive system.The abstract of concrete data structure is processed by the program, multinomial for the object class in FED file specific object is changed into an abstract attribute, multinomial for interactive class design parameter is changed into an abstract parameter.Relative to traditional scheme, FED file versatility is good, stability is high, coupling is low for this.In the case of without re-creating, edit and revising, be i.e. applicable to other based on HLA distributed interactive system；This general FED file can meet all kinds and any number of data structure；FED file is independent of the concrete data structure of a certain distributed interactive system, and the parsing of concrete data structure is placed in process coding, decreases establishment FED paper work amount, enhances the flexibility of system.

Description

The application process of FED file based on HLA distributed interactive system

Technical field

The present invention relates to transmission and IP distributed interactive system communication technical field, be specifically related to one Plant the application process of FED file based on HLA distributed interactive system.

Background technology

Key issue in distributed interactive systems development process is: multiple DBMS member are each other Between Interoperability and its core system member communication issue to each other.HLA is as building Mould and the High Level Architecture of emulation, its core concept is interoperability and resource recycling, its Distinguishing feature is by run time infrastructure RTI, it is provided that general, relatively independent support clothes Business program, separates system application with the back-up environment of bottom, and systemic-function that will be concrete is real Existing, system operational management separates with bottom communication transmission three, hidden respective realizes details, So that each several part can be developed relatively independently, and the elder generation in respective field can be made full use of Enter technology.

FED file is communication standard based on HLA distributed interactive system, be RTI member it Between communication interface, it describes the version number of HLA standard and becomes with distributed interactive system RTI The data structure interfaces communicated between Yuan.

For current HLA distributed interactive system, in the design process of FED file, existing Technical scheme be: first determine between distributed interactive system process the object class information of communication Concrete data structure and the concrete data structure of Interactive class information, then utilize such as OMDT it The tool software of class carries out creating, edit and revising, and process is loaded down with trivial details, dependence is strong, belongs to A certain specifically based on HLA distributed interactive system federal data execution file.As it is shown in figure 1, It uses object class to possess multiple specific object, and interactive class possesses multiple design parameter, defines non- The most careful, use process is excessively limited to so that autgmentability is poor.Thus, based on such technology The FED file that scheme is formulated has a disadvantage in that

(1) it is completely dependent on a certain specific HLA distributed interactive system due to its concrete data structure System so that its specificity is too high, and coupling is the most too strong, can only be applied to this with limiting to specific HLA distributed interactive system, does not the most possess versatility, and user is distributed at the HLA that exploitation is new During formula interactive system, it is necessary to come according to the data structure of new HLA distributed interactive system completely Reformulate the FED file of correspondence so that development efficiency is low, and repeated work is numerous and diverse, resource Waste is serious.

(2) based on the feature that above-mentioned specificity is too strong, the FED file institute that prior art is formulated Special HLA distributed interactive system is facing new demand and its own system upgrading to be carried out Time, in the face of newly-increased demand characteristic, adaptive change do not supported by original FED file formulated, Meeting after extension is upgraded if the demand of HLA distributed interactive system, it is right to reformulate The FED file answered, equally exists development efficiency low, and repeated work is numerous and diverse, and the wasting of resources is tight The problem of weight.

Summary of the invention

(1) to solve the technical problem that

The technical problem to be solved in the present invention is: how to provide based on HLA distributed interactive system The application process of the FED file of system, ensure that good the leading to of FED file by the program By property, and it is made to possess autgmentability freely.

(2) technical scheme

For solving above-mentioned technical problem, the present invention provides a kind of based on HLA distributed interactive system The application process of the FED file of system, described method comprises the steps:

Step S1: formulate general FED file according to HLA agreement, this general FED literary composition In part, in the object data structure that will be originally formulated based on specific HLA system multiple specifically Attribute unification is an abstract attribute, and by multiple design parameters unification in interaction data structure is One abstract parameter；

Specifically, this general FED file includes object class data and interactive class data, its In, define an abstract attribute and carry the specifying information of object class data interaction, define one Abstract parameter carries the specifying information of interactive class data interaction；Described abstract attribute and abstract ginseng Number is specifying information initial address in internal memory；

Step S2: when described general FED file sends in HLA distributed interactive system, Described object class data and interactive class data are encoded respectively；Specifically, in object class Respectively plus header in data and interactive class data, described header includes: object class data Or the type of the specifying information of interactive class data and length；

Step S3: when described general FED file receives in HLA distributed interactive system, Described object class data and interactive class data are decoded respectively；Specifically, to being received To object class data and interactive class data attached by header be decoded, read it concrete The type of data structure and length, and according to described type and length information, obtain abstract genus The specifying information that property or abstract parameter are positioned.

(3) beneficial effect

Compared with prior art, its key point is to concrete data structure to technical solution of the present invention Abstract process, multinomial for the object class in FED file specific object is changed into one and takes out As attribute, multinomial for the interactive class in FED file design parameter is changed into an abstract parameter. Relative to traditional scheme, FED file versatility is good, stability is high, coupling is low for this.Its In, versatility refers to well in the case of without re-creating, edit and revising, and gets final product horse On be applicable to other based on HLA distributed interactive system；Stability height refers to base, and this leads to All kinds and any number of data structure can be met with FED file；The low finger of coupling It is this FED file concrete data structure of not relying on a certain distributed interactive system, specifically The parsing of data structure is placed in process coding, decreases establishment FED paper work amount, Enhance the flexibility of system.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of FED file data form in prior art.

Fig. 2 is the flow chart of technical solution of the present invention.

Detailed description of the invention

For making the purpose of the present invention, content and advantage clearer, below in conjunction with the accompanying drawings and real Execute example, the detailed description of the invention of the present invention is described in further detail.

Embodiment

The present embodiment provides the application of a kind of FED file based on HLA distributed interactive system Method, as in figure 2 it is shown, described method comprises the steps:

Step S1: formulate general FED file according to HLA agreement, this general FED literary composition Part is compared with existing FED file content, the most only to object class and the use of interactive class Mode is innovated, the object data knot that will be originally formulated based on specific HLA system In structure, the unification of multiple specific objects is an abstract attribute, and by tools multiple in interaction data structure The unification of body parameter is an abstract parameter；

Specifically, this general FED file includes object class data and interactive class data, its In, define an abstract attribute and carry the specifying information of object class data interaction, define one Abstract parameter carries the specifying information of interactive class data interaction；Described abstract attribute and abstract ginseng Number is specifying information initial address in internal memory；

Step S2: when described general FED file sends in HLA distributed interactive system, Described object class data and interactive class data are encoded respectively；Specifically, in object class Respectively plus header in data and interactive class data, described header includes: object class data Or the type of the specifying information of interactive class data and length；

Step S3: when described general FED file receives in HLA distributed interactive system, right Described object class data and interactive class data are decoded respectively；Specifically, to received Object class data and interactive class data attached by header be decoded, read it and specifically count According to type and the length of structure, and according to described type and length information, obtain abstract attribute Or the specifying information that abstract parameter is positioned.

The above is only the preferred embodiment of the present invention, it is noted that lead for this technology For the those of ordinary skill in territory, on the premise of without departing from the technology of the present invention principle, it is also possible to Making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.

Claims (1)

1. an application process for FED file based on HLA distributed interactive system, its Being characterised by, described method comprises the steps:

Step S1: formulate general FED file according to HLA agreement, this general FED literary composition In part, in the object data structure that will be originally formulated based on specific HLA system multiple specifically Attribute unification is an abstract attribute, and by multiple design parameters unification in interaction data structure is One abstract parameter；

Specifically, this general FED file includes object class data and interactive class data, its In, define an abstract attribute and carry the specifying information of object class data interaction, will FED The multinomial specific object of object class in file changes into an abstract attribute, defines an abstract ginseng Number carries the specifying informations of interactive class data interaction, will interactive class in FED file many Item design parameter changes into an abstract parameter；Described abstract attribute and abstract parameter are concrete letter Breath initial address in internal memory；

Step S2: when described general FED file sends in HLA distributed interactive system, Described object class data and interactive class data are encoded respectively；Specifically, in object class Respectively plus header in data and interactive class data, described header includes: object class data Or the type of the specifying information of interactive class data and length；

Step S3: when described general FED file receives in HLA distributed interactive system, Described object class data and interactive class data are decoded respectively；Specifically, to being received To object class data and interactive class data attached by header be decoded, read it concrete The type of data structure and length, and according to described type and length information, obtain abstract genus The specifying information that property or abstract parameter are positioned.