internal static OracleString GetPersistedRowid(OracleConnection connection, OciRowidDescriptor rowidHandle) { OracleString @null = OracleString.Null; if (rowidHandle != null) { OciErrorHandle errorHandle = connection.ErrorHandle; NativeBuffer scratchBuffer = connection.GetScratchBuffer(0xf82); bool success = false; bool flag = false; RuntimeHelpers.PrepareConstrainedRegions(); try { int num; scratchBuffer.DangerousAddRef(ref success); if (OCI.ClientVersionAtLeastOracle9i) { int length = scratchBuffer.Length; num = TracedNativeMethods.OCIRowidToChar(rowidHandle, scratchBuffer, ref length, errorHandle); if (num != 0) { connection.CheckError(errorHandle, num); } return(new OracleString(scratchBuffer.PtrToStringAnsi(0, length))); } rowidHandle.DangerousAddRef(ref flag); OciServiceContextHandle serviceContextHandle = connection.ServiceContextHandle; OciStatementHandle stmtp = new OciStatementHandle(serviceContextHandle); string stmt = "begin :rowid := :rdesc; end;"; int offset = 0; int num6 = 4; int num5 = 8; int num3 = 12; int num2 = 0x10; int num4 = 20; try { IntPtr ptr; IntPtr ptr2; num = TracedNativeMethods.OCIStmtPrepare(stmtp, errorHandle, stmt, OCI.SYNTAX.OCI_NTV_SYNTAX, OCI.MODE.OCI_DEFAULT, connection); if (num != 0) { connection.CheckError(errorHandle, num); } scratchBuffer.WriteIntPtr(num5, rowidHandle.DangerousGetHandle()); scratchBuffer.WriteInt32(offset, 0); scratchBuffer.WriteInt32(num6, 4); scratchBuffer.WriteInt32(num3, 0); scratchBuffer.WriteInt32(num2, 0xf6e); num = TracedNativeMethods.OCIBindByName(stmtp, out ptr2, errorHandle, "rowid", 5, scratchBuffer.DangerousGetDataPtr(num4), 0xf6e, OCI.DATATYPE.VARCHAR2, scratchBuffer.DangerousGetDataPtr(num3), scratchBuffer.DangerousGetDataPtr(num2), OCI.MODE.OCI_DEFAULT); if (num != 0) { connection.CheckError(errorHandle, num); } num = TracedNativeMethods.OCIBindByName(stmtp, out ptr, errorHandle, "rdesc", 5, scratchBuffer.DangerousGetDataPtr(num5), 4, OCI.DATATYPE.ROWID_DESC, scratchBuffer.DangerousGetDataPtr(offset), scratchBuffer.DangerousGetDataPtr(num6), OCI.MODE.OCI_DEFAULT); if (num != 0) { connection.CheckError(errorHandle, num); } num = TracedNativeMethods.OCIStmtExecute(serviceContextHandle, stmtp, errorHandle, 1, OCI.MODE.OCI_DEFAULT); if (num != 0) { connection.CheckError(errorHandle, num); } if (scratchBuffer.ReadInt16(num3) == -1) { return(@null); } @null = new OracleString(scratchBuffer, num4, num2, MetaType.GetMetaTypeForType(OracleType.RowId), connection, false, true); GC.KeepAlive(rowidHandle); } finally { OciHandle.SafeDispose(ref stmtp); } } finally { if (flag) { rowidHandle.DangerousRelease(); } if (success) { scratchBuffer.DangerousRelease(); } } } return(@null); }
//////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////// // // Methods // //////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////// internal void Bind( OciHandle statementHandle, NativeBuffer parameterBuffer, OracleConnection connection ) { IntPtr h; // Don't bother with parameters where the user asks for the default value. if (!IsDirection(Parameter, ParameterDirection.Output) && null == Parameter.Value) { return; } string parameterName = Parameter.ParameterName; OciHandle errorHandle = connection.ErrorHandle; OciHandle environmentHandle = connection.EnvironmentHandle; int valueLength = 0; OCI.INDICATOR indicatorValue = OCI.INDICATOR.OK; int bufferLength; OCI.DATATYPE ociType = _bindingMetaType.OciType; HandleRef indicatorLocation = parameterBuffer.PtrOffset(_indicatorOffset); HandleRef lengthLocation = parameterBuffer.PtrOffset(_lengthOffset); HandleRef valueLocation = parameterBuffer.PtrOffset(_valueOffset); if (IsDirection(Parameter, ParameterDirection.Input)) { if (ADP.IsNull(_coercedValue)) { indicatorValue = OCI.INDICATOR.ISNULL; } else { valueLength = PutOracleValue( _coercedValue, valueLocation, _bindingMetaType, connection); } } else { Debug.Assert(IsDirection(Parameter, ParameterDirection.Output), "non-output output parameter?"); if (_bindingMetaType.IsVariableLength) { valueLength = 0; // Output-only values never have an input length... } else { valueLength = _bufferLengthInBytes; // ...except when they're fixed length, to avoid ORA-01459 errors } OciLobLocator.SafeDispose(ref _locator); OciHandle.SafeDispose(ref _descriptor); switch (ociType) { case OCI.DATATYPE.BFILE: case OCI.DATATYPE.BLOB: case OCI.DATATYPE.CLOB: _locator = new OciLobLocator(connection, _bindingMetaType.OracleType); break; case OCI.DATATYPE.RSET: _descriptor = new OciStatementHandle(environmentHandle); break; } if (null != _locator) { Marshal.WriteIntPtr((IntPtr)valueLocation, (IntPtr)_locator.Handle); } else if (null != _descriptor) { Marshal.WriteIntPtr((IntPtr)valueLocation, (IntPtr)_descriptor.Handle); } } Marshal.WriteInt16((IntPtr)indicatorLocation, (Int16)indicatorValue); // Don't bind a length value for LONGVARCHAR or LONGVARRAW data, or you'll end // up with ORA-01098: program Interface error during Long Insert\nORA-01458: invalid length inside variable character string // errors. if (OCI.DATATYPE.LONGVARCHAR == ociType || OCI.DATATYPE.LONGVARRAW == ociType) { lengthLocation = ADP.NullHandleRef; } else { // When we're binding this parameter as UCS2, the length we specify // must be in characters, not in bytes. if (_bindAsUCS2) { Marshal.WriteInt32((IntPtr)lengthLocation, (Int32)(valueLength / ADP.CharSize)); } else { Marshal.WriteInt32((IntPtr)lengthLocation, (Int32)valueLength); } } if (IsDirection(Parameter, ParameterDirection.Output)) { bufferLength = _bufferLengthInBytes; } else { bufferLength = valueLength; } // Finally, tell Oracle about our parameter. int rc = TracedNativeMethods.OCIBindByName( statementHandle, out h, errorHandle, parameterName, parameterName.Length, valueLocation, bufferLength, ociType, indicatorLocation, lengthLocation, ADP.NullHandleRef, 0, ADP.NullHandleRef, OCI.MODE.OCI_DEFAULT ); if (rc != 0) { _command.Connection.CheckError(errorHandle, rc); } _bindHandle = new OciBindHandle(statementHandle, h); #if TRACEPARAMETERVALUES if (null != _coercedValue) { SafeNativeMethods.OutputDebugStringW("Value = '" + _coercedValue.ToString() + "'\n"); } #endif //TRACEPARAMETERVALUES // OK, character bindings have a few extra things we need to do to // deal with character sizes and alternate character sets. if (_bindingMetaType.IsCharacterType) { // To avoid problems when our buffer is larger than the maximum number // of characters, we use OCI_ATTR_MAXCHAR_SIZE to limit the number of // characters that will be used. (Except on Oracle8i clients where it // isn't available) if (OCI.ClientVersionAtLeastOracle9i && IsDirection(Parameter, ParameterDirection.Output)) { _bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_MAXCHAR_SIZE, (int)_bufferLength, errorHandle); } if ((bufferLength > _bindingMetaType.MaxBindSize / ADP.CharSize) || (!OCI.ClientVersionAtLeastOracle9i && _bindingMetaType.UsesNationalCharacterSet)) // need to specify MAXDATA_SIZE for OCI8 UCS2 bindings to work { _bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_MAXDATA_SIZE, (int)_bindingMetaType.MaxBindSize, errorHandle); } // NOTE: the order is important here; setting charsetForm will // reset charsetId (I found this out the hard way...) if (_bindingMetaType.UsesNationalCharacterSet) { _bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_CHARSET_FORM, (int)OCI.CHARSETFORM.SQLCS_NCHAR, errorHandle); } // NOTE: the order is important here; setting charsetForm will // reset charsetId (I found this out the hard way...) if (_bindAsUCS2) { _bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_CHARSET_ID, OCI.OCI_UCS2ID, errorHandle); } } }
internal void Bind(OciStatementHandle statementHandle, NativeBuffer parameterBuffer, OracleConnection connection, ref bool mustRelease, ref SafeHandle handleToBind) { if (IsDirection(this.Parameter, ParameterDirection.Output) || (this.Parameter.Value != null)) { int num2; IntPtr ptr2; string parameterName = this.Parameter.ParameterName; OciErrorHandle errorHandle = connection.ErrorHandle; OciServiceContextHandle serviceContextHandle = connection.ServiceContextHandle; int num = 0; OCI.INDICATOR oK = OCI.INDICATOR.OK; OCI.DATATYPE ociType = this._bindingMetaType.OciType; IntPtr dataPtr = parameterBuffer.DangerousGetDataPtr(this._indicatorOffset); IntPtr alenp = parameterBuffer.DangerousGetDataPtr(this._lengthOffset); IntPtr valuep = parameterBuffer.DangerousGetDataPtr(this._valueOffset); OciHandle.SafeDispose(ref this._dateTimeDescriptor); if (IsDirection(this.Parameter, ParameterDirection.Input)) { if (System.Data.Common.ADP.IsNull(this._coercedValue)) { oK = OCI.INDICATOR.ISNULL; switch (ociType) { case OCI.DATATYPE.INT_TIMESTAMP: case OCI.DATATYPE.INT_TIMESTAMP_TZ: case OCI.DATATYPE.INT_TIMESTAMP_LTZ: this._dateTimeDescriptor = OracleDateTime.CreateEmptyDescriptor(ociType, connection); handleToBind = this._dateTimeDescriptor; break; } } else { num = this.PutOracleValue(this._coercedValue, parameterBuffer, this._valueOffset, this._bindingMetaType, connection, ref handleToBind); } } else { if (this._bindingMetaType.IsVariableLength) { num = 0; } else { num = this._bufferLength; } OciLobLocator.SafeDispose(ref this._locator); OciHandle.SafeDispose(ref this._descriptor); switch (ociType) { case OCI.DATATYPE.CLOB: case OCI.DATATYPE.BLOB: case OCI.DATATYPE.BFILE: this._locator = new OciLobLocator(connection, this._bindingMetaType.OracleType); handleToBind = this._locator.Descriptor; break; case OCI.DATATYPE.RSET: this._descriptor = new OciStatementHandle(serviceContextHandle); handleToBind = this._descriptor; break; case OCI.DATATYPE.INT_TIMESTAMP: case OCI.DATATYPE.INT_TIMESTAMP_TZ: case OCI.DATATYPE.INT_TIMESTAMP_LTZ: this._dateTimeDescriptor = OracleDateTime.CreateEmptyDescriptor(ociType, connection); handleToBind = this._dateTimeDescriptor; break; } } if (handleToBind != null) { handleToBind.DangerousAddRef(ref mustRelease); parameterBuffer.WriteIntPtr(this._valueOffset, handleToBind.DangerousGetHandle()); } parameterBuffer.WriteInt16(this._indicatorOffset, (short)oK); if ((OCI.DATATYPE.LONGVARCHAR == ociType) || (OCI.DATATYPE.LONGVARRAW == ociType)) { alenp = IntPtr.Zero; } else if (this._bindAsUCS2) { parameterBuffer.WriteInt32(this._lengthOffset, num / System.Data.Common.ADP.CharSize); } else { parameterBuffer.WriteInt32(this._lengthOffset, num); } if (IsDirection(this.Parameter, ParameterDirection.Output)) { num2 = this._bufferLength; } else { num2 = num; } OCI.DATATYPE dty = ociType; switch (ociType) { case OCI.DATATYPE.INT_TIMESTAMP: dty = OCI.DATATYPE.TIMESTAMP; break; case OCI.DATATYPE.INT_TIMESTAMP_TZ: dty = OCI.DATATYPE.TIMESTAMP_TZ; break; case OCI.DATATYPE.INT_TIMESTAMP_LTZ: dty = OCI.DATATYPE.TIMESTAMP_LTZ; break; } int rc = TracedNativeMethods.OCIBindByName(statementHandle, out ptr2, errorHandle, parameterName, parameterName.Length, valuep, num2, dty, dataPtr, alenp, OCI.MODE.OCI_DEFAULT); if (rc != 0) { this._command.Connection.CheckError(errorHandle, rc); } this._bindHandle = new OciBindHandle(statementHandle, ptr2); if (this._bindingMetaType.IsCharacterType) { if (OCI.ClientVersionAtLeastOracle9i && IsDirection(this.Parameter, ParameterDirection.Output)) { this._bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_MAXCHAR_SIZE, this._bindSize, errorHandle); } if ((num2 > (this._bindingMetaType.MaxBindSize / System.Data.Common.ADP.CharSize)) || (!OCI.ClientVersionAtLeastOracle9i && this._bindingMetaType.UsesNationalCharacterSet)) { this._bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_MAXDATA_SIZE, this._bindingMetaType.MaxBindSize, errorHandle); } if (this._bindingMetaType.UsesNationalCharacterSet) { this._bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_CHARSET_FORM, 2, errorHandle); } if (this._bindAsUCS2) { this._bindHandle.SetAttribute(OCI.ATTR.OCI_ATTR_CHARSET_ID, 0x3e8, errorHandle); } } GC.KeepAlive(parameterBuffer); } }