Passing Structures and Tables

This programming example shows how to pass structures and tables from the ABAP function module STFC_STRUCTURE to an external RFC Client program:

RFC_RC STFC_STRUCTURE(RFC_CONNECTION_HANDLE rfcHandle,

RFC_FUNCTION_DESC_HANDLE funcDesc)

{

RFC_ERROR_INFO error;

RFC_RC rc = RFC_OK;

RFC_FLOAT test_float = 12345.6789, veri_float;

RFC_INT test_int = 12345, veri_int;

RFC_BYTE test_rfchex3[3] = {0x41, 0x42, 0x43}; // "ABC"

RFC_BYTE veri_rfchex3[3] = {0, 0, 0};

const SAP_UC* test_data1 = cU("Hello World");

SAP_UC veri_data1[50 + 1] = iU("");

/*Create a function handle*/

RFC_FUNCTION_HANDLE funcHandle = NULL;

funcHandle = RfcCreateFunction(funcDesc, &error);

/*Create a structure handle: do not create using RfcCreateStructure, but just call*/

RFC_STRUCTURE_HANDLE structHandle = NULL;

rc = RfcGetStructure(funcHandle,cU("IMPORTSTRUCT"), &structHandle, &error);

RfcSetFloat(structHandle, cU("RFCFLOAT"), test_float, 0);

RfcGetFloat(structHandle, cU("RFCFLOAT"), &veri_float, 0);

RfcSetInt(structHandle, cU("RFCINT4"), 12345, 0);

RfcGetInt(structHandle, cU("RFCINT4"), &veri_int, 0);

RfcSetBytes(structHandle, cU("RFCHEX3"), test_rfchex3,

sizeofR(test_rfchex3), 0);

RfcGetBytes(structHandle, cU("RFCHEX3"), veri_rfchex3,

sizeofR(veri_rfchex3), 0);

RfcSetChars(structHandle, cU("RFCDATA1"), test_data1,

strlenU(test_data1), 0);

RfcGetChars(structHandle, cU("RFCDATA1"), veri_data1,

sizeofU(veri_data1), 0);

/*Create a structure handle: do not create using RfcCreateTable, but just call*/

RFC_TABLE_HANDLE tableHandle = NULL;

rc = RfcGetTable(funcHandle,cU("RFCTABLE"), &tableHandle, 0);

for(unsigned i = 0; i < count; i++)

{

RfcAppendRow(tableHandle, structHandle, 0);

}

SAP_UC buffer[256] = iU("");

printfU( cU("RFC test with STFC_STRUCTURE\n"));

RfcInvoke(rfcHandle, funcHandle, &error);

RfcGetChars(funcHandle, cU("RESPTEXT"), buffer, 255, 0);

EndTrim(buffer, cU(' '), 255);

printfU( cU("RESPTEXT : %s\n"), buffer);

RfcGetChars(funcHandle, cU("RESPTEXT"), buffer, 255, 0);

structHandle = NULL;

RfcGetStructure(funcHandle, cU("ECHOSTRUCT"), &structHandle, 0);

RfcGetFloat(structHandle, cU("RFCFLOAT"), &veri_float, 0);

RFC_INT rfcint4 = 0;

RfcGetInt(structHandle, cU("RFCINT4"), &veri_int, 0);

RfcGetBytes(structHandle, cU("RFCHEX3"), veri_rfchex3,

sizeofR(veri_rfchex3), 0);

RfcGetChars(structHandle, cU("RFCDATA1"), veri_data1,

sizeofU(veri_data1)-1, 0);

EndTrim(veri_data1, cU(' '), sizeofU(veri_data1));

printfU( cU("ECHOSTRUCT.RFCFLOAT : %f\n") ,veri_float);;

printfU( cU("ECHOSTRUCT.RFCINT4 : %d\n") , veri_int );

printfU( cU("ECHOSTRUCT.RFCHEX3 : %p\n") ,veri_rfchex3 );

printfU( cU("ECHOSTRUCT.RFCDATA1 : %s\n") , veri_data1);

tableHandle = NULL;

RfcGetTable(funcHandle, cU("RFCTABLE"), &tableHandle, 0);

RfcGetRowCount(tableHandle, &count, 0); //<-- moving table

cursor

RfcMoveToFirstRow(tableHandle, 0);

for(unsigned i = 0; i < count; i++)

{

RFC_STRUCTURE_HANDLE row = NULL;

row = RfcGetCurrentRow(tableHandle, 0);

RfcGetChars(row, cU("RFCDATA1"), veri_data1,

sizeofU(veri_data1), 0);

EndTrim(veri_data1, cU(' '), sizeofU(veri_data1));

printfU( cU("RFCTABLE[%d].RFCDATA1 : %s\n"),i,

veri_data1 );

RfcMoveToNextRow(tableHandle, 0); //<-- moving table

cursor

}

/*Clean up*/

RfcDestroyFunction(funcHandle, 0);

return rc;

}