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Beginnings of BLOB support - Do not use BLOBs yet though, as they do not work, but these changes will not affect behavor of anything unless you try to create a BLOB column 0 which will fail right now.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9362 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
George Tasker
2001-02-13 11:41:02 +00:00
parent 8d1e5dbf99
commit bf5423ea7d
2 changed files with 86 additions and 14 deletions
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62
src/common/db.cpp
View File

@@ -150,8 +150,6 @@ wxDbConnectInf::wxDbConnectInf(HENV henv, const wxString &dsn, const wxString &u
const wxString &password, const wxString &defaultDir,
const wxString &fileType, const wxString &description)
{
wxASSERT(dsn.Length());
Henv = 0;
freeHenvOnDestroy = FALSE;
@@ -322,6 +320,8 @@ int wxDbColFor::Format(int Nation, int dbDataType, SWORD sqlDataType,
i_dbDataType = DB_DATA_TYPE_VARCHAR;
if (i_sqlDataType == SQL_REAL)
i_dbDataType = DB_DATA_TYPE_FLOAT;
if (i_sqlDataType == SQL_C_BINARY)
i_dbDataType = DB_DATA_TYPE_BLOB;
}
if ((i_dbDataType == DB_DATA_TYPE_INTEGER) && (i_sqlDataType == SQL_C_DOUBLE))
@@ -366,6 +366,9 @@ int wxDbColFor::Format(int Nation, int dbDataType, SWORD sqlDataType,
s_Field = wxT("%02d/%02d/%04d %02d:%02d:%02d.%03d");
}
break;
case DB_DATA_TYPE_BLOB:
s_Field.Printf(wxT("Unable to format(%d)-SQL(%d)"),dbDataType,sqlDataType); //
break;
default:
s_Field.Printf(wxT("Unknown Format(%d)-SQL(%d)"),dbDataType,sqlDataType); //
break;
@@ -529,6 +532,12 @@ void wxDb::initialize()
typeInfDate.CaseSensitive = 0;
typeInfDate.MaximumScale = 0;
typeInfBlob.TypeName.Empty();
typeInfBlob.FsqlType = 0;
typeInfBlob.Precision = 0;
typeInfBlob.CaseSensitive = 0;
typeInfBlob.MaximumScale = 0;
// Error reporting is turned OFF by default
silent = TRUE;
@@ -643,7 +652,7 @@ bool wxDb::Open(const wxString &Dsn, const wxString &Uid, const wxString &AuthSt
// Query the data source regarding data type information
//
// The way I determined which SQL data types to use was by calling SQLGetInfo
// The way it was determined which SQL data types to use was by calling SQLGetInfo
// for all of the possible SQL data types to see which ones were supported. If
// a type is not supported, the SQLFetch() that's called from getDataTypeInfo()
// fails with SQL_NO_DATA_FOUND. This is ugly because I'm sure the three SQL data
@@ -692,7 +701,6 @@ bool wxDb::Open(const wxString &Dsn, const wxString &Uid, const wxString &AuthSt
// Float
if (!getDataTypeInfo(SQL_DOUBLE,typeInfFloat))
if (!getDataTypeInfo(SQL_REAL,typeInfFloat))
if (!getDataTypeInfo(SQL_FLOAT,typeInfFloat))
if (!getDataTypeInfo(SQL_DECIMAL,typeInfFloat))
@@ -738,11 +746,24 @@ bool wxDb::Open(const wxString &Dsn, const wxString &Uid, const wxString &AuthSt
typeInfDate.FsqlType = SQL_DATE;
}
if (!getDataTypeInfo(SQL_LONGVARBINARY, typeInfBlob))
{
if (!getDataTypeInfo(SQL_VARBINARY,typeInfBlob))
return(FALSE);
else
typeInfInteger.FsqlType = SQL_VARBINARY;
}
else
typeInfInteger.FsqlType = SQL_LONGVARBINARY;
//typeInfBlob.TypeName = "BLOB";
#ifdef DBDEBUG_CONSOLE
cout << wxT("VARCHAR DATA TYPE: ") << typeInfVarchar.TypeName << endl;
cout << wxT("INTEGER DATA TYPE: ") << typeInfInteger.TypeName << endl;
cout << wxT("FLOAT DATA TYPE: ") << typeInfFloat.TypeName << endl;
cout << wxT("DATE DATA TYPE: ") << typeInfDate.TypeName << endl;
cout << wxT("BLOB DATA TYPE: ") << typeInfBlob.TypeName << endl;
cout << endl;
#endif
@@ -870,11 +891,19 @@ bool wxDb::Open(wxDb *copyDb)
typeInfDate.CaseSensitive = copyDb->typeInfDate.CaseSensitive;
typeInfDate.MaximumScale = copyDb->typeInfDate.MaximumScale;
// Blob
typeInfBlob.FsqlType = copyDb->typeInfBlob.FsqlType;
typeInfBlob.TypeName = copyDb->typeInfBlob.TypeName;
typeInfBlob.Precision = copyDb->typeInfBlob.Precision;
typeInfBlob.CaseSensitive = copyDb->typeInfBlob.CaseSensitive;
typeInfBlob.MaximumScale = copyDb->typeInfBlob.MaximumScale;
#ifdef DBDEBUG_CONSOLE
cout << wxT("VARCHAR DATA TYPE: ") << typeInfVarchar.TypeName << endl;
cout << wxT("INTEGER DATA TYPE: ") << typeInfInteger.TypeName << endl;
cout << wxT("FLOAT DATA TYPE: ") << typeInfFloat.TypeName << endl;
cout << wxT("DATE DATA TYPE: ") << typeInfDate.TypeName << endl;
cout << wxT("BLOB DATA TYPE: ") << typeInfBlob.TypeName << endl;
cout << endl;
#endif
@@ -2186,13 +2215,14 @@ wxDbColInf *wxDb::GetColumns(wxChar *tableName[], const wxChar *userID)
#endif
colInf[colNo].dbDataType = DB_DATA_TYPE_VARCHAR;
}
else if (!wxStricmp(typeInfInteger.TypeName,colInf[colNo].typeName))
else if (!wxStricmp(typeInfInteger.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_INTEGER;
else if (!wxStricmp(typeInfFloat.TypeName,colInf[colNo].typeName))
else if (!wxStricmp(typeInfFloat.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_FLOAT;
else if (!wxStricmp(typeInfDate.TypeName,colInf[colNo].typeName))
else if (!wxStricmp(typeInfDate.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_DATE;
else if (!wxStricmp(typeInfBlob.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_BLOB;
colNo++;
}
}
@@ -2343,7 +2373,7 @@ wxDbColInf *wxDb::GetColumns(const wxString &tableName, int *numCols, const wxCh
// Determine the wxDb data type that is used to represent the native data type of this data source
colInf[colNo].dbDataType = 0;
if (!wxStricmp(typeInfVarchar.TypeName,colInf[colNo].typeName))
if (!wxStricmp(typeInfVarchar.TypeName, colInf[colNo].typeName))
{
#ifdef _IODBC_
// IODBC does not return a correct columnSize, so we set
@@ -2357,12 +2387,14 @@ wxDbColInf *wxDb::GetColumns(const wxString &tableName, int *numCols, const wxCh
colInf[colNo].dbDataType = DB_DATA_TYPE_VARCHAR;
}
else if (!wxStricmp(typeInfInteger.TypeName,colInf[colNo].typeName))
else if (!wxStricmp(typeInfInteger.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_INTEGER;
else if (!wxStricmp(typeInfFloat.TypeName,colInf[colNo].typeName))
else if (!wxStricmp(typeInfFloat.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_FLOAT;
else if (!wxStricmp(typeInfDate.TypeName,colInf[colNo].typeName))
else if (!wxStricmp(typeInfDate.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_DATE;
else if (!wxStricmp(typeInfBlob.TypeName, colInf[colNo].typeName))
colInf[colNo].dbDataType = DB_DATA_TYPE_BLOB;
colNo++;
}
@@ -2620,6 +2652,9 @@ wxDbColInf *wxDb::GetColumns(const wxString &tableName, int *numCols, const wxCh
case SQL_DATE:
colInf[colNo].dbDataType = DB_DATA_TYPE_DATE;
break;
case SQL_BINARY:
colInf[colNo].dbDataType = DB_DATA_TYPE_BLOB;
break;
#ifdef __WXDEBUG__
default:
wxString errMsg;
@@ -3435,6 +3470,9 @@ bool wxDb::ModifyColumn(const wxString &tableName, const wxString &columnName,
case DB_DATA_TYPE_DATE :
dataTypeName = typeInfDate.TypeName;
break;
case DB_DATA_TYPE_BLOB :
dataTypeName = typeInfBlob.TypeName;
break;
default:
return FALSE;
}

38
src/common/dbtable.cpp
View File

@@ -487,6 +487,15 @@ bool wxDbTable::bindParams(bool forUpdate)
else
colDefs[i].CbValue = 0;
break;
case DB_DATA_TYPE_BLOB:
fSqlType = pDb->GetTypeInfBlob().FsqlType;
precision = 50000;
scale = 0;
if (colDefs[i].Null)
colDefs[i].CbValue = SQL_NULL_DATA;
else
colDefs[i].CbValue = SQL_LEN_DATA_AT_EXEC(colDefs[i].SzDataObj);
break;
}
if (forUpdate)
{
@@ -1315,6 +1324,9 @@ bool wxDbTable::CreateTable(bool attemptDrop)
case DB_DATA_TYPE_DATE:
cout << pDb->typeInfDate.TypeName;
break;
case DB_DATA_TYPE_BLOB:
cout << pDb->typeInfBlob.TypeName;
break;
}
cout << endl;
}
@@ -1350,9 +1362,13 @@ bool wxDbTable::CreateTable(bool attemptDrop)
case DB_DATA_TYPE_DATE:
sqlStmt += pDb->GetTypeInfDate().TypeName;
break;
case DB_DATA_TYPE_BLOB:
sqlStmt += pDb->GetTypeInfBlob().TypeName;
break;
}
// For varchars, append the size of the string
if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)
if (colDefs[i].DbDataType == DB_DATA_TYPE_VARCHAR)// ||
// colDefs[i].DbDataType == DB_DATA_TYPE_BLOB)
{
wxString s;
s.Printf(wxT("(%d)"), colDefs[i].SzDataObj);
@@ -2119,8 +2135,26 @@ wxDbColDataPtr* wxDbTable::SetColDefs(wxDbColInf *pColInfs, ULONG numCols)
pColDataPtrs[index].SzDataObj = sizeof(TIMESTAMP_STRUCT);
pColDataPtrs[index].SqlCtype = SQL_C_TIMESTAMP;
break;
case DB_DATA_TYPE_BLOB:
int notSupportedYet = 0;
wxASSERT_MSG(notSupportedYet, wxT("This form of ::SetColDefs() cannot be used with BLOB columns"));
pColDataPtrs[index].PtrDataObj = /*BLOB ADDITION NEEDED*/NULL;
pColDataPtrs[index].SzDataObj = /*BLOB ADDITION NEEDED*/sizeof(void *);
pColDataPtrs[index].SqlCtype = SQL_VARBINARY;
break;
}
if (pColDataPtrs[index].PtrDataObj != NULL)
SetColDefs (index,pColInfs[index].colName,pColInfs[index].dbDataType, pColDataPtrs[index].PtrDataObj, pColDataPtrs[index].SqlCtype, pColDataPtrs[index].SzDataObj);
else
{
// Unable to build all the column definitions, as either one of
// the calls to "new" failed above, or there was a BLOB field
// to have a column definition for. If BLOBs are to be used,
// the other form of ::SetColDefs() must be used, as it is impossible
// to know the maximum size to create the PtrDataObj to be.
delete [] pColDataPtrs;
return NULL;
}
SetColDefs (index,pColInfs[index].colName,pColInfs[index].dbDataType, pColDataPtrs[index].PtrDataObj, pColDataPtrs[index].SqlCtype, pColDataPtrs[index].SzDataObj);
}
}