/*************************************************************************** * Licensed Materials - Property of IBM and/or HCL * * IBM Informix Client-SDK * * Copyright IBM Corporation 1997, 2013 All rights reserved. * (c) Copyright HCL Technologies Ltd. 2017. All Rights Reserved. * * * * * * Title: loinfoW.c (Unicode counterpart of loinfo.c) * * Description: To obtain information about a smart large object stored * in the database. * The folowing information will be obtained - * 1. Size of the smart large object * 2. Name of the sbspace where it is stored * *************************************************************************** */ #include #include #include #ifndef NO_WIN32 #include #include #include #endif /*NO_WIN32*/ #include "infxcli.h" #define BUFFER_LEN 25 #define BUFFER_LENW 120 #define ERRMSG_LEN 200 SQLWCHAR defDsnW[] = L"odbc_demo"; SQLCHAR defDsn[] = "odbc_demo"; SQLINTEGER checkError (SQLRETURN rc, SQLSMALLINT handleType, SQLHANDLE handle, SQLCHAR* errmsg) { SQLRETURN retcode = SQL_SUCCESS; SQLSMALLINT errNum = 1; SQLWCHAR sqlStateW[6]; SQLCHAR *sqlState; SQLINTEGER nativeError; SQLWCHAR errMsgW[ERRMSG_LEN]; SQLCHAR *errMsg; SQLSMALLINT textLengthPtr; if ((rc != SQL_SUCCESS) && (rc != SQL_SUCCESS_WITH_INFO)) { while (retcode != SQL_NO_DATA) { retcode = SQLGetDiagRecW (handleType, handle, errNum, sqlStateW, &nativeError, errMsgW, ERRMSG_LEN, &textLengthPtr); if (retcode == SQL_INVALID_HANDLE) { fprintf (stderr, "checkError function was called with an invalid handle!!\n"); return 1; } if ((retcode == SQL_SUCCESS) || (retcode == SQL_SUCCESS_WITH_INFO)) { sqlState = (SQLCHAR *) malloc (wcslen(sqlStateW) + sizeof(char)) ; wcstombs( (char *) sqlState, sqlStateW, wcslen(sqlStateW) + sizeof(char)); errMsg = (SQLCHAR *) malloc (wcslen(errMsgW) + sizeof(char)); wcstombs( (char *) errMsg, errMsgW, wcslen(errMsgW) + sizeof(char)); fprintf (stderr, "ERROR: %d: %s : %s \n", nativeError, sqlState , errMsg); } errNum++; } fprintf (stderr, "%s\n", errmsg); return 1; /* all errors on this handle have been reported */ } else return 0; /* no errors to report */ } int main (long argc, char* argv[]) { /* Declare variables */ /* Handles */ SQLHDBC hdbc; SQLHENV henv; SQLHSTMT hstmt; /* Smart large object file descriptor */ SQLINTEGER lofd; SQLLEN lofd_valsize = 0; /* Smart large object specification structure */ SQLWCHAR* lospec_bufferW; SQLSMALLINT lospec_size; SQLLEN lospec_valsize = 0; /* Smart large object status structure */ SQLWCHAR* lostat_bufferW; SQLSMALLINT lostat_size; SQLLEN lostat_valsize = 0; /* Smart large object pointer structure */ SQLWCHAR* loptr_bufferW; SQLSMALLINT loptr_size; SQLLEN loptr_valsize = 0; /* Miscellaneous variables */ SQLWCHAR *dsnW; /*name of the DSN used for connecting to the database*/ SQLRETURN rc = 0; SQLINTEGER in; SQLWCHAR verInfoBufferW[BUFFER_LENW]; SQLSMALLINT verInfoLen; SQLWCHAR* selectStmtW = (SQLWCHAR *) L"SELECT advert FROM item WHERE item_num = 1004"; SQLINTEGER lo_size; SQLINTEGER mode = LO_RDONLY; SQLCHAR sbspace_name[BUFFER_LEN]; SQLWCHAR sbspace_nameW[BUFFER_LENW]; SQLINTEGER sbspace_name_size = SQL_NTS; SQLLEN cbMode = 0, cbLoSize = 0; int lenArgv1; /* STEP 1. Get data source name from command line (or use default) ** Allocate the environment handle and set ODBC version ** Allocate the connection handle ** Establish the database connection ** Get version information from the database server ** -- if version < 9.x (not UDO enabled), exit with error message ** Allocate the statement handle */ if (argc != 2) { /* Use default dsnW - odbc_demo */ fprintf (stdout, "\nUsing default DSN : %s\n", defDsn); dsnW = (SQLWCHAR *) malloc( wcslen(defDsnW) * sizeof(SQLWCHAR) + sizeof(SQLWCHAR) ); wcscpy ((SQLWCHAR *)dsnW, (SQLWCHAR *)defDsnW); } else { /* Use specified dsnW */ lenArgv1 = strlen((char *)argv[1]); dsnW = (SQLWCHAR *) malloc (lenArgv1 * sizeof(SQLWCHAR) + sizeof(SQLWCHAR)); mbstowcs (dsnW, (char *)argv[1], lenArgv1 + sizeof(char)); fprintf (stdout, "\nUsing specified DSN : %s\n", argv[1]); } /* Allocate the Environment handle */ rc = SQLAllocHandle (SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv); if (rc != SQL_SUCCESS) { fprintf (stdout, "Environment Handle Allocation failed\nExiting!!\n"); return (1); } /* Set the ODBC version to 3.0 */ rc = SQLSetEnvAttr (henv, SQL_ATTR_ODBC_VERSION, (SQLPOINTER) SQL_OV_ODBC3, 0); if (checkError (rc, SQL_HANDLE_ENV, henv, (SQLCHAR *) "Error in Step 1 -- SQLSetEnvAttr failed\nExiting!!\n")) return (1); /* Allocate the connection handle */ rc = SQLAllocHandle (SQL_HANDLE_DBC, henv, &hdbc); if (checkError (rc, SQL_HANDLE_ENV, henv, (SQLCHAR *) "Error in Step 1 -- Connection Handle Allocation failed\nExiting!!\n")) return (1); /* Establish the database connection */ rc = SQLConnectW (hdbc, dsnW, SQL_NTS, (SQLWCHAR *) L"", SQL_NTS, (SQLWCHAR *) L"", SQL_NTS); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 1 -- SQLConnect failed\nExiting!!\n")) return (1); /* Get version information from the database server If version < 9.x (not UDO enabled), exit with error message */ rc = SQLGetInfoW (hdbc, SQL_DBMS_VER, verInfoBufferW, BUFFER_LENW, &verInfoLen); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 1 -- SQLGetInfo failed\n")) return 1; if ((wcsncmp ((SQLWCHAR *) verInfoBufferW, L"09", 2)) < 0) { fprintf (stdout, "\n** This test can only be run against UDO-enabled database server -- version 9 or higher **\n"); return 1; } /* Allocate the statement handle */ rc = SQLAllocHandle (SQL_HANDLE_STMT, hdbc, &hstmt ); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 1 -- Statement Handle Allocation failed\nExiting!!")) return (1); fprintf (stdout, "STEP 1 done...connected to database\n"); /* STEP 2. Select a smart-large object from the database ** -- the select statement executed is - ** "SELECT advert FROM item WHERE item_num = 1004" */ /* Execute the select statement */ rc = SQLExecDirectW (hstmt, selectStmtW, SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 2 -- SQLExecDirect failed\n")) goto Exit; fprintf (stdout, "STEP 2 done...select statement executed...smart large object retrieved from the databse\n"); /* STEP 3. Get the size of the smart large object pointer structure ** Allocate a buffer to hold the structure. ** Get the smart large object pointer structure from the database ** Close the result set cursor */ /* Get the size of the smart large object pointer structure */ rc = SQLGetInfo (hdbc, SQL_INFX_LO_PTR_LENGTH, &loptr_size, sizeof(loptr_size), NULL); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 3 -- SQLGetInfo failed\n")) goto Exit; /* Allocate a buffer to hold the smart large object pointer structure */ loptr_bufferW = malloc (loptr_size); /* Bind the smart large object pointer structure buffer allocated to the column in the result set & fetch it from the database */ rc = SQLBindCol (hstmt, 1, SQL_C_BINARY, loptr_bufferW, loptr_size, &loptr_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLBindCol failed\n")) goto Exit; rc = SQLFetch (hstmt); if (rc == SQL_NO_DATA_FOUND) { fprintf (stdout, "No Data Found\nExiting!!\n"); goto Exit; } if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLFetch failed\n")) goto Exit; /* Close the result set cursor */ rc = SQLCloseCursor (hstmt); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 3 -- SQLCloseCursor failed\n")) goto Exit; fprintf (stdout, "STEP 3 done...smart large object pointer structure fetched from the database\n"); /* STEP 4. Use the smart large object's pointer structure to open it and obtain the smart large ** object file descriptor. ** Reset the statement parameters */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_OUTPUT, SQL_C_LONG, SQL_INTEGER, (UDWORD)0, 0, &lofd, sizeof(lofd), &lofd_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_UDT_FIXED, (UDWORD)loptr_size, 0, loptr_bufferW, loptr_size, &loptr_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 2)\n")) goto Exit; rc = SQLBindParameter (hstmt, 3, SQL_PARAM_INPUT, SQL_C_LONG, SQL_INTEGER, (UDWORD)0, 0, &mode, sizeof(mode), &cbMode); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLBindParameter failed (param 3)\n")) goto Exit; rc = SQLExecDirectW (hstmt, (SQLWCHAR *) L"{? = call ifx_lo_open(?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLExecDirect failed\n")) goto Exit; /* Reset the statement parameters */ rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 4 -- SQLFreeStmt failed\n")) goto Exit; fprintf (stdout, "STEP 4 done...smart large object opened... file descriptor obtained\n"); /* STEP 5. Get the size of the smart large object status structure ** Allocate a buffer to hold the structure. ** Get the smart large object status structure from the database ** Reset the statement parameters */ /* Get the size of the smart large object status structure */ rc = SQLGetInfoW (hdbc, SQL_INFX_LO_STAT_LENGTH, &lostat_size, sizeof(lostat_size), NULL); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 5 -- SQLGetInfo failed\n")) goto Exit; /* Allocate a buffer to hold the smart large object status structure. */ lostat_bufferW = malloc(lostat_size); /* Get the smart large object status structure from the database. */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_LONG, SQL_INTEGER, (UDWORD)0, 0, &lofd, sizeof(lofd), &lofd_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_INPUT_OUTPUT, SQL_C_BINARY, SQL_INFX_UDT_FIXED, (UDWORD)lostat_size, 0, lostat_bufferW, lostat_size, &lostat_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLBindParameter failed (param 2)\n")) goto Exit; rc = SQLExecDirectW (hstmt, (SQLWCHAR *) L"{call ifx_lo_stat(?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLExecDirect failed\n")) goto Exit; /* Reset the statement parameters */ rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 5 -- SQLFreeStmt failed\n")) goto Exit; fprintf (stdout, "STEP 5 done...smart large object status structure fetched from the database\n"); /* STEP 6. Use the smart large object's status structure to get the size ** of the smart large object ** Reset the statement parameters ** ** You can use additional ifx_lo_stat_*() functions to get more ** status information about the samrt large object. ** ** You can also use it to retrieve the smart large object specification ** structure and get further information about the smart large object ** using it's specification structure. */ /* Use the smart large object status structure to get the size of the smart large object. */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_UDT_FIXED, (UDWORD)lostat_size, 0, lostat_bufferW, lostat_size, &lostat_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_OUTPUT, SQL_C_LONG, SQL_BIGINT, (UDWORD)0, 0, &lo_size, sizeof(lo_size), &cbLoSize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLExecDirectW (hstmt, (SQLWCHAR *) L"{call ifx_lo_stat_size(?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLExecDirect failed\n")) goto Exit; /* Reset the statement parameters */ rc = SQLFreeStmt (hstmt, SQL_RESET_PARAMS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 6 -- SQLFreeStmt failed\n")) goto Exit; fprintf (stdout, "LARGE OBJECT SIZE = %ld\n", lo_size); fprintf (stdout, "STEP 6 done...smart large object size retrieved\n"); /* STEP 7. Get the size of the smart large object specification structure ** Allocate a buffer to hold the structure. ** Get the smart large object specification structure from the database ** Reset the statement parameters */ /* Get the size of the smart large object specification structure */ rc = SQLGetInfoW(hdbc, SQL_INFX_LO_SPEC_LENGTH, &lospec_size, sizeof(lospec_size), NULL); if (checkError (rc, SQL_HANDLE_DBC, hdbc, (SQLCHAR *) "Error in Step 7 -- SQLGetInfo failed\n")) goto Exit; /* Allocate a buffer to hold the smart large object specification structure. */ lospec_bufferW = malloc (lospec_size); /* Get the smart large object specification structure from the database */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_UDT_FIXED, (UDWORD)lostat_size, 0, lostat_bufferW, lostat_size, &lostat_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 7 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_OUTPUT, SQL_C_BINARY, SQL_INFX_UDT_FIXED, (UDWORD)lospec_size, 0, lospec_bufferW, lospec_size, &lospec_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 7 -- SQLBindParameter failed (param 2)\n")) goto Exit; rc = SQLExecDirectW (hstmt, (SQLWCHAR *) L"{call ifx_lo_stat_cspec(?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 7 -- SQLExecDirect failed\n")) goto Exit; fprintf (stdout, "STEP 7 done...smart large object status structure fetched from the database\n"); /* STEP 8. Use the smart large object's specification structure to get the sbspace ** name where the smart large object is stored ** Reset the statement parameters */ /* Use the smart large object's specification structure to get the sbspace name of the smart large object. */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_BINARY, SQL_INFX_UDT_FIXED, (UDWORD)lospec_size, 0, lospec_bufferW, lospec_size, &lospec_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 8 -- SQLBindParameter failed (param 1)\n")) goto Exit; rc = SQLBindParameter (hstmt, 2, SQL_PARAM_OUTPUT, SQL_C_CHAR, SQL_CHAR, BUFFER_LEN, 0, sbspace_name, BUFFER_LEN, &sbspace_name_size); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 8 -- SQLBindParameter failed (param 2)\n")) goto Exit; rc = SQLExecDirectW (hstmt, (SQLWCHAR *) L"{call ifx_lo_specget_sbspace(?, ?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 8 -- SQLExecDirect failed\n")) goto Exit; /* sbspace_name = (SQLCHAR *) malloc (wcslen(sbspace_nameW) + sizeof(char)); wcstombs( (char *) sbspace_name, sbspace_nameW, wcslen(sbspace_nameW) + sizeof(char)); */ fprintf (stdout, "LARGE OBJECT SBSPACE NAME = %s\n", sbspace_name); fprintf (stdout, "STEP 8 done...large object sbspace name retrieved\n"); /* STEP 9. Close the smart large object. */ rc = SQLBindParameter (hstmt, 1, SQL_PARAM_INPUT, SQL_C_LONG, SQL_INTEGER, (UDWORD)0, 0, &lofd, sizeof(lofd), &lofd_valsize); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 9 -- SQLBindParameter failed\n")) goto Exit; rc = SQLExecDirectW (hstmt, (SQLWCHAR *) L"{call ifx_lo_close(?)}", SQL_NTS); if (checkError (rc, SQL_HANDLE_STMT, hstmt, (SQLCHAR *) "Error in Step 9 -- SQLExecDirect failed\n")) goto Exit; fprintf (stdout, "STEP 9 done...smart large object closed\n"); /* STEP 10. Free the allocated buffers */ free (loptr_bufferW); free (lostat_bufferW); free (lospec_bufferW); fprintf (stdout, "STEP 10 done...smart large object buffers freed\n"); Exit: /* CLEANUP: Close the statement handle ** Free the statement handle ** Disconnect from the datasource ** Free the connection and environment handles ** Exit */ /* Close the statement handle */ SQLFreeStmt (hstmt, SQL_CLOSE); /* Free the statement handle */ SQLFreeHandle (SQL_HANDLE_STMT, hstmt); /* Disconnect from the data source */ SQLDisconnect (hdbc); /* Free the environment handle and the database connection handle */ SQLFreeHandle (SQL_HANDLE_DBC, hdbc); SQLFreeHandle (SQL_HANDLE_ENV, henv); fprintf (stdout,"\n\nHit to terminate the program...\n\n"); in = getchar (); return (rc); }