?? oralob.cpp
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#define __OCICPP_INTERNAL_USE_#include "OraLob.h"/*! \class OCICPP::OraLob \brief Client-side representation of an Oracle Large Object cell */OCICPP::OraLob::OraLob(OCIEnv *envhp,OCIError *errhp,OCIParam *param,OCISvcCtx *svc,ub2 lob_type,int rows): OraType(envhp,errhp,param,lob_type,rows),lob(0),svchp(svc),type(lob_type){ ReqType=lob_type; size=0; lob=(OCILobLocator **)calloc(nRows,sizeof(OCILobLocator *)); for(int i=0;i<nRows;i++) { if(lob_type==SQLT_FILE) { if(OCIDescriptorAlloc((void *)envhp,(void **)&lob[i],OCI_DTYPE_FILE,0,0)!=OCI_SUCCESS) { throw OraError("OCICPPLIB: Cannot make new LOB: Handle Allocation failed",OCICPPERROR); } } else { if(OCIDescriptorAlloc((void *)envhp,(void **)&lob[i],OCI_DTYPE_LOB,0,0)!=OCI_SUCCESS) { throw OraError("OCICPPLIB: Cannot make new LOB: Handle Allocation failed",OCICPPERROR); } } }}OCICPP::OraLob::~OraLob() { for(int i=0;i<nRows;i++) { OCIDescriptorFree(lob[i],OCI_DTYPE_LOB); } free(lob); OCIHandleFree(definehp,OCI_HTYPE_DEFINE);}void OCICPP::OraLob::define(OCIStmt *stmt,int col) { CHECKERR(err, OCIDefineByPos(stmt,&definehp, err, col+1, lob, -1,ReqType, (dvoid *) null, 0, (ub2 *)0, OCI_DEFAULT)); }void OCICPP::OraLob::getCLOB(Lob &ulob,int row) { ulob.init(svchp,lob[row],err,CLOB,CACHE_OFF);}void OCICPP::OraLob::getBLOB(Lob &ulob,int row) { ulob.init(svchp,lob[row],err,BLOB,CACHE_OFF);}void OCICPP::OraLob::getStr(std::string &str,int row) { Lob ulob; ulob.init(svchp,lob[row],err,BLOB,CACHE_OFF); char buf[512]; unsigned actread; str=""; while(actread=ulob.read(buf,255)) { buf[actread]='\0'; str+=buf; }}?? 快捷鍵說明
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