| Interstage Application Server アプリケーション作成ガイド （CORBAサービス編） |
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| 第7章 アプリケーションの開発(OOCOBOL) | > 7.8 データ型に対するマッピング |
IDL言語で構造体structを指定した場合、以下のデータ型で宣言します。
構造体(固定長): 集団項目 構造体(可変長): クラス(構造体クラス)
以降では、以下のIDL定義例をもとに説明します。
［ファイル名: simple.idl］
module ODsample{
struct samplefix { // 構造体(固定長)
long para1;
long para2;
};
struct samplevar { // 構造体(可変長)
long para1;
string para2;
};
interface structtest{
samplefix op2(
in samplefix str1,
out samplefix str2,
inout samplefix str3
);
samplevar op1(
in samplevar str1,
out samplevar str2,
inout samplevar str3
);
};
};
［ファイル名: simple--copy.cbl］
* 集団項目(構造体(固定長))
01 ODSAMPLE-SAMPLEFIX TYPEDEF.
02 PARA1 TYPE CORBA-LONG.
02 PARA2 TYPE CORBA-LONG.
［ファイル名: ODSAMPLE-SAMPLEVAR.COB］
* 構造体クラス(構造体(可変長))
CLASS-ID. ODSAMPLE-SAMPLEVAR AS "ODSAMPLE-SAMPLEVAR"
INHERITS STRUCTBASE.
*
OBJECT.
DATA DIVISION.
WORKING-STORAGE SECTION.
COPY CORBA--COPY.
*
* PROPERTY
01 PARA1 TYPE CORBA-LONG PROPERTY.
01 PARA2 OBJECT REFERENCE CORBA-STRING PROPERTY.
*
PROCEDURE DIVISION.
*
* CLONE METHOD
METHOD-ID. CLONE AS "CLONE".
DATA DIVISION.
LINKAGE SECTION.
01 0--CLONE-OBJ OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
PROCEDURE DIVISION RETURNING 0--CLONE-OBJ.
END METHOD CLONE.
END OBJECT.
END CLASS ODSAMPLE-SAMPLEVAR.
構造体クラスで定義されているメソッド／プロパティを以下に示します。
|
メソッド／プロパティ |
機能 |
|
CLONEメソッド |
(オブジェクトメソッド)構造体クラスを複製します。 |
|
メンバプロパティ |
メンバの値の取得／設定を行います。 |
メソッド／プロパティの使用例を以下に示します。
* CLONEメソッド * 構造体クラスをSTV-CLONとして複製 01 STV USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR. 01 STV-CLON USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR. INVOKE STV "CLONE" RETURNING STV-CLON.
* メンバプロパティ(クラス以外のデータ型) * メンバPARA1の値をSTV-MEMTに取得 01 STV USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR. 01 STV-MEMT TYPE CORBA-LONG. MOVE PARA1 OF STV TO STV-MEMT. * メンバPARA1にSTV-MEMTを設定 01 STV USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR. 01 STV-MEMT TYPE CORBA-LONG. MOVE STV-MEMT TO PARA1 OF STV.
* メンバプロパティ(クラス) * メンバPARA2の値をSTV-MEMCに取得 01 STV USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR. 01 STV-MEMC USAGE OBJECT REFERENCE CORBA-STRING. SET STV-MEMC TO PARA2 OF STV. * メンバPARA2にSTV-MEMCを設定 01 STV USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR. 01 STV-MEMC USAGE OBJECT REFERENCE CORBA-STRING. SET PARA2 OF STV TO STV-MEMC.
クライアントアプリケーション例を以下に示します。
IDENTIFICATION DIVISION.
PROGRAM-ID. "CLIENT-MAIN".
*
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
REPOSITORY.
COPY CORBA--REP.
COPY COSNAMING--REP.
COPY SIMPLE--REP.
.
SPECIAL-NAMES.
SYMBOLIC CONSTANT
COPY CORBA--CONST.
COPY COSNAMING--CONST.
COPY SIMPLE--CONST.
.
*
DATA DIVISION.
WORKING-STORAGE SECTION.
COPY CORBA--COPY.
COPY COSNAMING--COPY.
COPY SIMPLE--COPY.
*
01 ORB USAGE OBJECT REFERENCE CORBA-ORB.
01 OBJ USAGE OBJECT REFERENCE CORBA-OBJECT.
01 NAMING-CONTEXT USAGE OBJECT REFERENCE COSNAMING-NAMINGCONTEXT.
01 NAME TYPE COSNAMING-NAME.
01 NAME-COMPONENT USAGE OBJECT REFERENCE COSNAMING-NAMECOMPONENT.
01 NAME-ID USAGE OBJECT REFERENCE CORBA-STRING.
01 NAME-KIND USAGE OBJECT REFERENCE CORBA-STRING.
*
01 EXCEPTION-ID USAGE OBJECT REFERENCE CORBA-STRING.
01 EXCEPTION-ID-VALUE PIC X(50).
01 API-NAME PIC X(50).
*
01 TARGET-OBJ USAGE OBJECT REFERENCE ODSAMPLE-STRUCTTEST.
01 FIX0 TYPE ODSAMPLE-SAMPLEFIX.
01 FIX1 TYPE ODSAMPLE-SAMPLEFIX.
01 FIX2 TYPE ODSAMPLE-SAMPLEFIX.
01 FIX3 TYPE ODSAMPLE-SAMPLEFIX.
01 VAR0 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 VAR1 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 VAR2 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 VAR3 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 STR-WORK USAGE OBJECT REFERENCE CORBA-STRING.
*
PROCEDURE DIVISION.
*
DECLARATIVES.
*
OTHER-ERROR SECTION.
USE EXCEPTION CORBA-EXCEPTION.
DISPLAY "CORBA::Exception: " API-NAME.
SET EXCEPTION-ID TO IDL-ID OF EXCEPTION-OBJECT AS CORBA-EXCEPTION.
INVOKE EXCEPTION-ID "GET-VALUE" RETURNING EXCEPTION-ID-VALUE.
DISPLAY " Exception-id: " EXCEPTION-ID-VALUE.
EXIT PROGRAM.
END-OTHER-ERR.
*
END DECLARATIVES.
*
MAIN SECTION.
*
MOVE "CORBA::ORB_init" TO API-NAME.
INVOKE CORBA "ORB_INIT"
USING "simple_c"
FJ-OM_ORBID
RETURNING ORB.
*
MOVE "CORBA::ORB::resolve_initial_references" TO API-NAME.
INVOKE ORB "RESOLVE_INITIAL_REFERENCES"
USING CORBA-ORB-OBJECTID_NAMESERVICE
RETURNING OBJ.
*
INVOKE COSNAMING-NAMINGCONTEXT "NARROW"
USING OBJ
RETURNING NAMING-CONTEXT.
*
INVOKE CORBA-STRING "NEW-WITH-VALUE"
USING "ODsample::structtest"
RETURNING NAME-ID.
*
INVOKE CORBA-STRING "NEW-WITH-VALUE"
USING " "
RETURNING NAME-KIND.
*
INVOKE COSNAMING-NAMECOMPONENT "NEW"
RETURNING NAME-COMPONENT.
*
SET IDL-ID OF NAME-COMPONENT TO NAME-ID.
SET KIND OF NAME-COMPONENT TO NAME-KIND.
*
INVOKE SEQUENCE-NAMECOMPONENT-001 "NEW-WITH-LENGTH"
USING 1
RETURNING NAME.
*
INVOKE NAME "SET-VALUE"
USING 1
NAME-COMPONENT.
*
MOVE "CosNaming::NamingContext::resolve" TO API-NAME.
INVOKE NAMING-CONTEXT "RESOLVE"
USING NAME
RETURNING OBJ.
*
INVOKE ODSAMPLE-STRUCTTEST "NARROW"
USING OBJ
RETURNING TARGET-OBJ.
*
* ODsample::samplefix
*
* SET IN PARAMETER
MOVE 10 TO PARA1 OF FIX1.
MOVE 11 TO PARA2 OF FIX1.
*
* SET INOUT PARAMETER
MOVE 20 TO PARA1 OF FIX3.
MOVE 21 TO PARA1 OF FIX3.
*
MOVE "ODdemo::structtest::op2" TO API-NAME.
INVOKE TARGET-OBJ "OP2"
USING FIX1
FIX2
FIX3
RETURNING FIX0.
*
* ODsample::samplevar
*
* SET IN PARAMETER
INVOKE ODSAMPLE-SAMPLEVAR "NEW" RETURNING VAR1.
MOVE 5 TO PARA1 OF VAR1.
INVOKE CORBA-STRING "NEW" RETURNING STR-WORK.
INVOKE STR-WORK "SET-VALUE" USING "test".
SET PARA2 OF VAR1 TO STR-WORK.
*
* SET INOUT PARAMETER
INVOKE ODSAMPLE-SAMPLEVAR "NEW" RETURNING VAR3.
MOVE 4 TO PARA1 OF VAR1.
INVOKE CORBA-STRING "NEW" RETURNING STR-WORK.
INVOKE STR-WORK "SET-VALUE" USING "pro".
SET PARA2 OF VAR3 TO STR-WORK.
*
MOVE "ODdemo::structtest::op1" TO API-NAME.
INVOKE TARGET-OBJ "OP1"
USING VAR1
VAR2
VAR3
RETURNING VAR0.
*
STOP RUN.
*
END-MAIN.
*
END PROGRAM "CLIENT-MAIN".
サーバアプリケーション例を以下に示します。
CLASS-ID. ODSAMPLE-STRUCTTEST-IMPL
INHERITS ODSAMPLE-STRUCTTEST.
*
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
REPOSITORY.
COPY CORBA--REP.
COPY SIMPLE--REP.
.
SPECIAL-NAMES.
SYMBOLIC CONSTANT
COPY CORBA--CONST.
COPY SIMPLE--CONST.
.
*
OBJECT.
DATA DIVISION.
WORKING-STORAGE SECTION.
COPY CORBA--COPY.
COPY SIMPLE--COPY.
*
PROCEDURE DIVISION.
*
METHOD-ID. OP1 OVERRIDE.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 STR-WORK USAGE OBJECT REFERENCE CORBA-STRING.
LINKAGE SECTION.
01 STR1 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 STR2 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 STR3 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
01 STR0 USAGE OBJECT REFERENCE ODSAMPLE-SAMPLEVAR.
*
PROCEDURE DIVISION
USING STR1
STR2
STR3
RETURNING STR0
RAISING CORBA-SYSTEMEXCEPTION.
*
* SET OUT PARAMETER
INVOKE ODSAMPLE-SAMPLEVAR "NEW" RETURNING STR2.
MOVE 12 TO PARA1 OF STR2.
INVOKE CORBA-STRING "NEW" RETURNING STR-WORK.
INVOKE STR-WORK "SET-VALUE" USING "(*str2)->para2".
SET PARA2 OF STR2 TO STR-WORK.
*
* SET INOUT PARAMETER
INVOKE ODSAMPLE-SAMPLEVAR "NEW" RETURNING STR3.
MOVE 16 TO PARA1 OF STR3.
INVOKE CORBA-STRING "NEW" RETURNING STR-WORK.
INVOKE STR-WORK "SET-VALUE" USING "(*str3)->para2".
SET PARA2 OF STR3 TO STR-WORK.
*
* SET RESULT
INVOKE ODSAMPLE-SAMPLEVAR "NEW" RETURNING STR0.
MOVE 11 TO PARA1 OF STR0.
INVOKE CORBA-STRING "NEW" RETURNING STR-WORK.
INVOKE STR-WORK "SET-VALUE" USING "(*str0)->para2".
SET PARA2 OF STR0 TO STR-WORK.
*
END METHOD OP1.
*
*
METHOD-ID. OP2 OVERRIDE.
DATA DIVISION.
LINKAGE SECTION.
01 STR1 TYPE ODSAMPLE-SAMPLEFIX.
01 STR2 TYPE ODSAMPLE-SAMPLEFIX.
01 STR3 TYPE ODSAMPLE-SAMPLEFIX.
01 STR0 TYPE ODSAMPLE-SAMPLEFIX.
*
PROCEDURE DIVISION
USING STR1
STR2
STR3
RETURNING STR0
RAISING CORBA-SYSTEMEXCEPTION.
*
* SET OUT PARAMETER
*
MOVE 0 TO PARA1 OF STR3.
MOVE 1 TO PARA2 OF STR3.
* SET INOUT PARAMETER
MOVE 2 TO PARA1 OF STR2.
MOVE 3 TO PARA2 OF STR2.
*
* SET RESULT
MOVE 4 TO PARA1 OF STR0.
MOVE 5 TO PARA2 OF STR0.
*
END METHOD OP2.
*
END OBJECT.
*
END CLASS ODSAMPLE-STRUCTTEST-IMPL.
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