511 lines
14 KiB
C#
511 lines
14 KiB
C#
//
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// System.Data.Odbc.libodbc
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//
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// Authors:
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// Brian Ritchie (brianlritchie@hotmail.com)
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// Sureshkumar T (tsureshkumar@novell.com)
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//
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// Copyright (C) Brian Ritchie, 2002
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Data;
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using System.Data.Common;
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using System.Runtime.InteropServices;
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namespace System.Data.Odbc
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{
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internal enum OdbcHandleType : short
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{
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Env = 1,
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Dbc = 2,
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Stmt = 3,
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Desc = 4
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}
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internal enum OdbcReturn : short
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{
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Error = -1,
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InvalidHandle = -2,
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StillExecuting = 2,
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NeedData = 99,
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Success = 0,
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SuccessWithInfo = 1,
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NoData = 100
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}
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internal enum OdbcEnv : ushort
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{
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OdbcVersion = 200,
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ConnectionPooling = 201,
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CPMatch = 202
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}
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internal enum OdbcConnectionAttribute : int
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{
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AutoCommit = 102,
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TransactionIsolation = 108,
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CurrentCatalog = 109,
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#if NET_2_0
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CoptTransactionIsolation = 1227 /* SQL_COPT_SS_TXN_ISOLATION */
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#endif
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}
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internal enum OdbcInfo : ushort
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{
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DataSourceName = 2,
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DriverName = 6,
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DriverVersion = 7,
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DatabaseName = 16,
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DbmsVersion = 18,
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IdentifierQuoteChar = 29
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}
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internal enum OdbcInputOutputDirection : short
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{
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Input = 1,
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InputOutput = 2,
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ResultCol = 3,
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Output = 4,
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ReturnValue = 5
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}
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internal enum OdbcIsolationLevel
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{
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ReadUncommitted = 1,
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ReadCommitted = 2,
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RepeatableRead = 4,
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Serializable = 8,
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Snapshot = 32 /* SQL_TXN_SS_SNAPSHOT */
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}
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internal enum OdbcLengthIndicator : short
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{
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NoTotal = -4,
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NullData = -1
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}
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// Keep this sorted.
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internal enum FieldIdentifier : short
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{
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AutoUniqueValue = 11, /* SQL_DESC_AUTO_UNIQUE_VALUE */
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BaseColumnName = 22, /* SQL_DESC_BASE_COLUMN_NAME */
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BaseTableName = 23, /* SQL_DESC_BASE_TABLE_NAME */
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CaseSensitive = 12, /* SQL_DESC_CASE_SENSITIVE */
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CatelogName = 17, /* SQL_DESC_CATALOG_NAME */
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ConsiseType = 2, /* SQL_DESC_CONCISE_TYPE */
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Count = 1001, /* SQL_DESC_COUNT */
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DisplaySize = 6, /* SQL_DESC_DISPLAY_SIZE */
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FixedPrecScale = 9, /* SQL_DESC_FIXED_PREC_SCALE */
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Label = 18, /* SQL_DESC_LABEL */
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Length = 1003, /* SQL_DESC_LENGTH */
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LiteralPrefix = 27, /* SQL_DESC_LITERAL_PREFIX */
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LiteralSuffix = 28, /* SQL_DESC_LITERAL_SUFFIX */
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LocalTypeName = 29, /* SQL_DESC_LOCAL_TYPE_NAME */
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Name = 1011, /* SQL_DESC_NAME */
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Nullable = 1008, /* SQL_DESC_NULLABLE */
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NumPrecRadix = 32, /* SQL_DESC_NUM_PREC_RADIX */
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OctetLength = 1013, /* SQL_DESC_OCTET_LENGTH */
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Precision = 1005, /* SQL_DESC_PRECISION */
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Scale = 1006, /* SQL_DESC_SCALE */
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SchemaName = 16, /* SQL_DESC_SCHEMA_NAME */
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Searchable = 13, /* SQL_DESC_SEARCHABLE */
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TableName = 15, /* SQL_DESC_TABLE_NAME */
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Type = 1002, /* SQL_DESC_TYPE */
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TypeName = 14, /* SQL_DESC_TYPE_NAME */
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Unnamed = 1012, /* SQL_DESC_UNNAMED */
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Unsigned = 8, /* SQL_DESC_UNSIGNED */
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Updatable = 10 /* SQL_DESC_UPDATABLE */
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct OdbcTimestamp
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{
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internal short year;
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internal ushort month;
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internal ushort day;
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internal ushort hour;
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internal ushort minute;
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internal ushort second;
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internal ulong fraction;
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}
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internal class libodbc
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{
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#region global constants
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internal const int SQL_OV_ODBC2 = 2;
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internal const int SQL_OV_ODBC3 = 3;
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internal const string SQLSTATE_RIGHT_TRUNC = "01004";
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internal const char C_NULL = '\0';
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internal const int SQL_NTS = -3;
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internal const short SQL_TRUE = 1;
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internal const short SQL_FALSE = 0;
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// SQLStatistics
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internal const short SQL_INDEX_UNIQUE = 0;
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internal const short SQL_INDEX_ALL = 1;
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internal const short SQL_QUICK = 0;
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internal const short SQL_ENSURE = 1;
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// SQLColumnAttribute
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internal const short SQL_NO_NULLS = 0;
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internal const short SQL_NULLABLE = 1;
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internal const short SQL_NULLABLE_UNKNOWN = 2;
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internal const short SQL_ATTR_READONLY = 0;
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internal const short SQL_ATTR_WRITE = 1;
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internal const short SQL_ATTR_READWRITE_UNKNOWN = 2;
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#endregion
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internal static OdbcInputOutputDirection ConvertParameterDirection(
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ParameterDirection dir)
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{
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switch (dir) {
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case ParameterDirection.Input:
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return OdbcInputOutputDirection.Input;
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case ParameterDirection.InputOutput:
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return OdbcInputOutputDirection.InputOutput;
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case ParameterDirection.Output:
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return OdbcInputOutputDirection.Output;
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case ParameterDirection.ReturnValue:
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return OdbcInputOutputDirection.ReturnValue;
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default:
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return OdbcInputOutputDirection.Input;
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}
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}
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLAllocHandle (
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OdbcHandleType HandleType,
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IntPtr InputHandle,
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ref IntPtr OutputHandlePtr);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLSetEnvAttr (
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IntPtr EnvHandle,
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OdbcEnv Attribute,
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IntPtr Value,
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int StringLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLConnect (
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IntPtr ConnectionHandle,
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string ServerName,
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short NameLength1,
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string UserName,
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short NameLength2,
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string Authentication,
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short NameLength3);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLDriverConnect (
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IntPtr ConnectionHandle,
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IntPtr WindowHandle,
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string InConnectionString,
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short StringLength1,
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string OutConnectionString,
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short BufferLength,
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ref short StringLength2Ptr,
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ushort DriverCompletion);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLExecDirect (
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IntPtr StatementHandle,
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string StatementText,
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int TextLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLRowCount (
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IntPtr StatementHandle,
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ref int RowCount);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLNumResultCols (
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IntPtr StatementHandle,
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ref short ColumnCount);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLFetch (
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IntPtr StatementHandle);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref bool TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref double TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref long TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref short TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref float TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref OdbcTimestamp TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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ref int TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetData (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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SQL_C_TYPE TargetType,
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byte[] TargetPtr,
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int BufferLen,
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ref int Len);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLDescribeCol (
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IntPtr StatementHandle,
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ushort ColumnNumber,
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byte[] ColumnName,
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short BufferLength,
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ref short NameLength,
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ref short DataType,
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ref uint ColumnSize,
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ref short DecimalDigits,
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ref short Nullable);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLFreeHandle (
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ushort HandleType,
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IntPtr SqlHandle);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLDisconnect (
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IntPtr ConnectionHandle);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLPrepare (
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IntPtr StatementHandle,
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string Statement,
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int TextLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLExecute (
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IntPtr StatementHandle);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetConnectAttr (
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IntPtr ConnectionHandle,
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OdbcConnectionAttribute Attribute,
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out int value,
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int BufferLength,
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out int StringLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLSetConnectAttr (
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IntPtr ConnectionHandle,
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OdbcConnectionAttribute Attribute,
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IntPtr Value,
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int Length);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLEndTran (
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int HandleType,
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IntPtr Handle,
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short CompletionType);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLBindParameter (
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IntPtr StatementHandle,
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ushort ParamNum,
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short InputOutputType,
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SQL_C_TYPE ValueType,
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SQL_TYPE ParamType,
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uint ColSize,
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short DecimalDigits,
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IntPtr ParamValue,
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int BufLen,
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IntPtr StrLen);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLCancel (
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IntPtr StatementHandle);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLCloseCursor (
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IntPtr StatementHandle);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLError (
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IntPtr EnvironmentHandle,
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IntPtr ConnectionHandle,
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IntPtr StatementHandle,
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byte[] Sqlstate,
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ref int NativeError,
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byte[] MessageText,
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short BufferLength,
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ref short TextLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetStmtAttr (
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IntPtr StatementHandle,
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int Attribute,
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ref IntPtr Value,
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int BufLen,
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int StrLen);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLSetDescField (
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IntPtr DescriptorHandle,
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short RecNumber,
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short FieldIdentifier,
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byte[] Value,
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int BufLen);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetDiagRec (
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OdbcHandleType HandleType,
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IntPtr Handle,
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ushort RecordNumber,
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byte [] Sqlstate,
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ref int NativeError,
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byte [] MessageText,
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short BufferLength,
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ref short TextLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLMoreResults (
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IntPtr Handle);
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internal enum SQLFreeStmtOptions : short
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{
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Close = 0,
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Drop,
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Unbind,
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ResetParams
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}
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLFreeStmt (
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IntPtr Handle,
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SQLFreeStmtOptions option);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLGetInfo (
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IntPtr connHandle,
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OdbcInfo info,
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byte [] buffer,
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short buffLength,
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ref short remainingStrLen);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLColAttribute (
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IntPtr StmtHandle,
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short column,
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FieldIdentifier fieldId,
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byte [] charAttributePtr,
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short bufferLength,
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ref short strLengthPtr,
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ref int numericAttributePtr);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLPrimaryKeys (
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IntPtr StmtHandle,
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string catalog,
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short catalogLength,
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string schema,
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short schemaLength,
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string tableName,
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short tableLength);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLStatistics (
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IntPtr StmtHandle,
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string catalog,
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short catalogLength,
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string schema,
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short schemaLength,
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string tableName,
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short tableLength,
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short unique,
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short Reserved);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLBindCol (
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IntPtr StmtHandle,
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short column,
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SQL_C_TYPE targetType,
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byte [] buffer,
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int bufferLength,
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ref int indicator);
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[DllImport ("odbc32.dll", CharSet = CharSet.Unicode)]
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internal static extern OdbcReturn SQLBindCol (
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IntPtr StmtHandle,
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short column,
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SQL_C_TYPE targetType,
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ref short value,
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int bufferLength,
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ref int indicator);
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}
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}
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