FileIO Examples
This appendix describes two examples of using FileIO. One example reads data from a database and saves it to a file, and the other example reads data from a file and saves it to a database.
1. Database File Types
Example of Using FileIO of the Database File Type
The following is source code for Example of Using FileIO of the Database File Type.
static long innerModule1(test2Context *context)
{
long rc = RC_NRM;
/* File Descriptor */
FILE *fd1=NULL;
// User Variables Declaration
{
/**************************************
① * KIND : DBIO Call
* NODE ID : 2
* NAME : pfm_emp_p_s999
* DESCRIPTION :
*************************************/
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:DBIO_DYNAMIC_PARAMETER NODEID2------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:DBIO_DYNAMIC_PARAMETER NODEID2------------------//
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:BEFORE_CODE NODEID2------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:BEFORE_CODE NODEID2------------------//
/**************************************
* KIND : DBIO Callee Info
* NAME : pfm_emp_p_s999
* EXEC : SELECT
* INPUT : pfm_emp_p_s999In
* OUTPUT : pfm_emp_p_s999Out
* ARRAY INPUT : NONE
* ARRAY OUTPUT : pfm_emp_p_s999BundleOut
* DYNAMIC STRUCTURE : NONE
*************************************/
PFM_TRY(pfmDbioSelectArray("pfm_emp_p_s999", 3, &context->inCtxpfm_emp_p_s999, context->outCtxpfm_emp_p_s999Ary, NULL, PFMDBIO_NOLOCK));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:DBIO_EXCEPTION NODEID2------------------//
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:DBIO_EXCEPTION NODEID2------------------//
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:AFTER_CODE NODEID2------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:AFTER_CODE NODEID2------------------//
}
{
/**************************************
* KIND : FILEIO Call
* NODE ID : 1
* NAME : fio TEST01
* DESCRIPTION :
*************************************/
② PFM_TRYNJ(pfmFileIOOpen(&fd1, "/tmp/FileIOData.txt", NULL, FILE_WRITE));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:FILEIO_OPEN_EXCEPTION NODEID1------------------//
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:FILEIO_OPEN_EXCEPTION NODEID1------------------//
fioTEST01Data temporaryInput1[3];
/* File IO Struct Define */
PfmFileIOStruct pfmFileIOStruct1 = {"fioTEST01Data", 3, "F", 0, NULL, 0, NULL };
bzero(temporaryInput1, sizeof(temporaryInput1));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:BEFORE_CODE NODEID1------------------//
/*******************************************
③ * File IO Input Value Setting *
*******************************************/
pfmFileIOStruct1[0].empno = context->outCtxpfm_emp_p_s999Ary[0]->empno ;
PFM_STRCPY( pfmFileIOStruct1[0].ename, context->outCtxpfm_emp_p_s999Ary[0]->ename );
PFM_STRCPY( pfmFileIOStruct1[0].job, context->outCtxpfm_emp_p_s999Ary[0]->job );
PFM_STRCPY( pfmFileIOStruct1[0].sal, context->outCtxpfm_emp_p_s999Ary[0]->sal );
pfmFileIOStruct1[1].empno = context->outCtxpfm_emp_p_s999Ary[1]->empno ;
PFM_STRCPY( pfmFileIOStruct1[1].ename, context->outCtxpfm_emp_p_s999Ary[1]->ename );
PFM_STRCPY( pfmFileIOStruct1[1].job, context->outCtxpfm_emp_p_s999Ary[1]->job );
PFM_STRCPY( pfmFileIOStruct1[1].sal, context->outCtxpfm_emp_p_s999Ary[1]->sal );
pfmFileIOStruct1[2].empno = context->outCtxpfm_emp_p_s999Ary[2]->empno ;
PFM_STRCPY( pfmFileIOStruct1[2].ename, context->outCtxpfm_emp_p_s999Ary[2]->ename );
PFM_STRCPY( pfmFileIOStruct1[2].job, context->outCtxpfm_emp_p_s999Ary[2]->job );
PFM_STRCPY( pfmFileIOStruct1[2].sal, context->outCtxpfm_emp_p_s999Ary[2]->sal );
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:BEFORE_CODE NODEID1------------------//
/* Read Buffer Struct */
pfmFileIOStruct1.structData = &temporaryInput1[0];
pfmFileIOStruct1.structSize = sizeof(fioTEST01Data);
④ PFM_TRYNJ(pfmFileIOWrite(&fd1, &pfmFileIOStruct1));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:FILEIO_EXCEPTION NODEID1------------------//
if( rc != RC_NRM ) {
PFM_DBG("NULL File Write Error!");
PFM_TRY( pfmFileIOClose( &fd1 ) );
return RC_ERR;
}
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:FILEIO_EXCEPTION NODEID1------------------//
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:AFTER_CODE NODEID1------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:AFTER_CODE NODEID1------------------//
PFM_TRYNJ(pfmFileIOClose(&fd1));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:FILEIO_CLOSE_EXCEPTION NODEID1------------------//
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:FILEIO_CLOSE_EXCEPTION NODEID1------------------//
}
return RC_NRM;
PFM_CATCH:
return rc;
}
The following describes the previous source code.
① Uses the DBIO module to access the database and read data.
② Opens the FileIO module to get the file descriptor.
③ Sets the input structure of FileIO as an output structure that includes the result value of the DBIO module.
④ Saves the FileIO structure data to the file.
2. File Database Types
Example of Using FileIO of the File Database Type
The following is source code for Example of Using FileIO of the File Database Type.
static long innerModule1(test2Context *context)
{
long rc = RC_NRM;
/* File Descriptor */
FILE *fd1=NULL;
// User Variables Declaration
{
/**************************************
* KIND : FILEIO Call
* NODE ID : 1
* NAME : fio TEST01
* DESCRIPTION :
*************************************/
① PFM_TRYNJ(pfmFileIOOpen(&fd1, "/tmp/FileIOData.txt", NULL, FILE_READ));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:FILEIO_OPEN_EXCEPTION NODEID1------------------//
if(rc!=RC_NRM) {
PFM_DBG("[%s] File open Error!!", /tmp/FileIOData.txt);
return RC_ERR;
}
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:FILEIO_OPEN_EXCEPTION NODEID1------------------//
fioTEST01Data temporaryOutput1[3];
/* File IO Struct Define */
PfmFileIOStruct pfmFileIOStruct1 = {"fioTEST01Data", 3, "F", 0, NULL, 0, NULL };
bzero(temporaryOutput1, sizeof(temporaryOutput1));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:BEFORE_CODE NODEID1------------------//
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:BEFORE_CODE NODEID1------------------//
/* Read Buffer Struct */
pfmFileIOStruct1.structData = &temporaryOutput1[0];
pfmFileIOStruct1.structSize = sizeof(fioTEST01Data);
PFM_STRYNJ(pfmFileIORead(&fd1, &pfmFileIOStruct1));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:FILEIO_EXCEPTION NODEID1------------------//
if( rc != RC_NRM ) {
PFM_DBG("NULL File Write Error!");
PFM_TRY( pfmFileIOClose( &fd1 ) );
return RC_ERR;
}
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:FILEIO_EXCEPTION NODEID1------------------//
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:AFTER_CODE NODEID1------------------//
/*******************************************
* File IO Input Value Setting *
*******************************************/
context->inCtxpfm_emp_p_i999Ary[0].empno = pfmFileIOStruct1[0]->empno ;
PFM_STRCPY( context->inCtxpfm_emp_p_i999Ary[0].ename, pfmFileIOStruct1[0]->ename );
PFM_STRCPY( context->inCtxpfm_emp_p_i999Ary[0].sal, pfmFileIOStruct1[0]->sal );
context->inCtxpfm_emp_p_i999Ary[1].empno = pfmFileIOStruct1[1]->empno ;
PFM_STRCPY( context->inCtxpfm_emp_p_i999Ary[1].ename, pfmFileIOStruct1[1]->ename );
PFM_STRCPY( context->inCtxpfm_emp_p_i999Ary[1].sal, pfmFileIOStruct1[1]->sal );
context->inCtxpfm_emp_p_i999Ary[2].empno = pfmFileIOStruct1[2]->empno ;
PFM_STRCPY( context->inCtxpfm_emp_p_i999Ary[2].ename, pfmFileIOStruct1[2]->ename );
PFM_STRCPY( context->inCtxpfm_emp_p_i999Ary[2].sal, pfmFileIOStruct1[2]->sal );
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:AFTER_CODE NODEID1------------------//
PFM_TRYNJ(pfmFileIOClose(&fd1));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:FILEIO_CLOSE_EXCEPTION NODEID1------------------//
if(rc!=RC_NRM) {
PFM_DBG("[%s] File close Error!!", /tmp/FileIOData.txt);
return RC_ERR;
}
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:FILEIO_CLOSE_EXCEPTION NODEID1------------------//
}
{
/**************************************
② * KIND : DBIO Call
* NODE ID : 2
* NAME : pfm_emp_p_i999
* DESCRIPTION :
*************************************/
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:DBIO_DYNAMIC_PARAMETER NODEID2------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:DBIO_DYNAMIC_PARAMETER NODEID2------------------//
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:BEFORE_CODE NODEID2------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:BEFORE_CODE NODEID2------------------//
/**************************************
* KIND : DBIO Callee Info
* NAME : pfm_emp_p_i999
* EXEC : INSERT
* INPUT : pfm_emp_p_i999In
* OUTPUT : pfm_emp_p_i999Out
* ARRAY INPUT : pfm_emp_p_i999BundleIn
* ARRAY OUTPUT : NONE
* DYNAMIC STRUCTURE : NONE
*************************************/
PFM_TRY(pfmDbioDmlArray("pfm_emp_p_i999", 3, context->inCtxpfm_emp_p_i999Ary, NULL, PFMDBIO_NOLOCK));
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:DBIO_EXCEPTION NODEID2------------------//
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:DBIO_EXCEPTION NODEID2------------------//
//DO_NOT_MODIFY_THIS_LINE-----------START_OF_CODE:AFTER_CODE NODEID2------------------//
// TODO Auto-generated method stub
//DO_NOT_MODIFY_THIS_LINE-----------END_OF_CODE:AFTER_CODE NODEID2------------------//
}
return RC_NRM;
PFM_CATCH:
return rc;
}
The following describes the previous source code.
① Opens the FileIO module to get the file descriptor.
② Call the DBIO module.
